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Open Access Article
1 - Modeling of copper removal from electroplating industry wastewaters using zinc oxide nano adsorbent supported on graphene oxide
Mahin Moradi Soroor Sadeghi Sara SharifiA new nano adsorbent was prepared using zinc oxide nanoparticles supported on graphene oxide to separate copper from electroplating industry wastewater. Graphene oxide was synthesized via Hummer's modified method, and its surface morphology was characterized through FTI MoreA new nano adsorbent was prepared using zinc oxide nanoparticles supported on graphene oxide to separate copper from electroplating industry wastewater. Graphene oxide was synthesized via Hummer's modified method, and its surface morphology was characterized through FTIR spectroscopy and scanning electron microscopy (SEM). A systematic study of the adsorption process was conducted, varying pH, initial copper concentration, contact time, adsorbent dosage, and temperature. The experimental results revealed that the maximum adsorption capacity, with 89.77% efficiency, was achieved at a pH of 7 when 0.5 g of adsorbent was in contact with a 200 mg/L copper solution at 20°C for 30 minutes. The nano adsorbent exhibited a high adsorption capacity in both simulated and real industrial wastewater samples, effectively removing up to 99% of copper from industrial samples. Adsorption isotherm, kinetic, and thermodynamic studies were performed to elucidate the adsorption mechanism. The adsorption process followed pseudo-second-order models and the Freundlich isotherm. Thermodynamic studies indicated that the adsorption of copper ions on ZnO/GO was a spontaneous and exothermic reaction with an enthalpy of -6361.21 J/mol. This study demonstrates that nano ZnO/GO can be utilized as an effective, low-cost, and environmentally friendly nano adsorbent for electroplating wastewater treatment. Manuscript profile -
Open Access Article
2 - Effect of polyethylene glycol and propyltrimethoxysilane on structural and optical properties of zinc oxide nanoparticles synthesized by sol–gel process
Djahnit Leila López-González Mar Belhadj Fatima Naitbouda Abddelyamine Benosmane Ali Haddaoui Nacereddine -
Open Access Article
3 - Capacitive properties of zinc oxide thin films by radiofrequency magnetron sputtering
Roger Ondo-Ndong Hans Essone-Obame Zita Hermance Moussambi Nathaniel Koumba -
Open Access Article
4 - Effect of dietary zinc oxide nanoparticle on leukocyte properties of rainbow trout (Oncorhynchum mykiss)
Houman Rajabi IslamiThe effect of zinc oxide nanoparticle as a mineral supplement in the diet on the white blood cells of rainbow trout was investigated in this research. Eight hundred specimens of rainbow trout fry (17.22±5.41 g) were randomly distributed in 18 experimental tank (s MoreThe effect of zinc oxide nanoparticle as a mineral supplement in the diet on the white blood cells of rainbow trout was investigated in this research. Eight hundred specimens of rainbow trout fry (17.22±5.41 g) were randomly distributed in 18 experimental tank (six treatments each with three replications). The basal diet was prepared without zinc supplementation and used for the negative control treatment. Other experimental diets were prepared by adding 10, 30, 50 and 70 mg/kg of zinc nanoparticles and 70 mg of zinc sulfate (positive control) to each kg of the basic diet. Blood samples were taken from the fish at the end of the experiment to check the number of white blood cells and their differential count. After two weeks of adaptation, the fish were fed for 8 weeks with the diets corresponding to each experimental treatment. Blood samples were taken from the fish at the end of the experiment to check the number of white blood cells and their differential count. The results showed that nano zinc oxide has a significant effect on the leukocyte count with the highest number of 178,000±22,000 No. mm-3 in fish fed diet supplemented with 50 mg kg-1 Nano ZnO, which was significantly more than their number in fish fed with basic diet (p<0.05). Furthermore, fish fed diet supplemented with 50 mg kg-1 Nano ZnO diet had the highest lymphocytes percentage of 72.21±0.13%, while the lowest percentage of neutrophils was also found in fish fed diet supplemented with 50 mg kg-1 Nano ZnO. However, the actual number of neutrophils in the blood of fish in this treatment was 4.5 folds more than those in the negative control treatment. Findings of the present study showed that zinc oxide nanoparticles have a significant effect on the leukocyte properties of rainbow trout. Manuscript profile -
Open Access Article
5 - Photocatalytic Degradation of Triton X-100 by Zinc oxide Nanoparticles
Masoud Giahi Faegheh Ghanbari -
Open Access Article
6 - photocatalytic degradation of Triton X-100 in aqueous phase with Zinc oxide as a nanoparticle under UV light irradiation
M. Giahi F. Ghanbari -
Open Access Article
7 - Removal of betamethasone sodium phosphate from wastewater using zinc oxide nanoparticles
M. Giahi H. Taghavi S. Habibi Habibi R. Sariri -
Open Access Article
8 - Effect of dietary supplementation vitamin C in liver tissue destruction rainbow trout (Oncorhynchus mykiss) in the face of nano-zinc oxide
Darabitabar, F., Hedayati, A., salati, A., Hosseinifar, H. .Unsuitable water quality and pollutants in the water causing stress response and eventually occurs on physiological parameters of fish health and reduced immune function of fish, hence the use of vitamins seems like a very necessary safety supplier for improve immunity. MoreUnsuitable water quality and pollutants in the water causing stress response and eventually occurs on physiological parameters of fish health and reduced immune function of fish, hence the use of vitamins seems like a very necessary safety supplier for improve immunity. 170 pieces of fish with an average weight of 170 grams was taken at 70 L tanks. Then fish were placed in 40 and 80 mg per liter concentrations of nanoparticles on two levels of vitamin C (400 and 800 mg per kilogram of food). Compatibility during was performed twice feeding during this period fish with commercial food were fed at a rate of 2% body weight per day. The water used in the workshop physicochemical factors including temperature C ° 20 ± 2, pH 7/2 ± 0/4 and dissolved oxygen 6/74 ± 0/2 and water hardness 185 ± 16 ppm was measured on a daily basis and fixed in all treatments were considered. The combination of 800 mg/kg of vitamin C and 40 mg/l of Nano simultaneously taking the cause of the protective effect of vitamin C by Nano zinc on liver damage so that damages were lower compared with other treatments. This study shows that the use of a suitable material such as vitamin C at high concentration, 800 mg per kg in the diet of rainbow trout, seems to be necessary and useful for increasing the antioxidant defense. Manuscript profile -
Open Access Article
9 - The Effect of ZnO Nanoparticles on the Growth of Bacillus subtilis and Escherichia coli O157:H7
hakimeh esmaielzadeh parvaneh sangpour ramin khaksar farzaneh shahrazIntroduction: Recently antimicrobial nanoparticles such as ZnO have attracted the attentions of scientists. Regarding the antimicrobial effect and low cost of ZnO nanoparticles, these might be emplyed in food industry to reduce the growth of food microorganisms. The obj MoreIntroduction: Recently antimicrobial nanoparticles such as ZnO have attracted the attentions of scientists. Regarding the antimicrobial effect and low cost of ZnO nanoparticles, these might be emplyed in food industry to reduce the growth of food microorganisms. The object of this study is to evaluate the antibacterial effect of ZnO nanoparticles on Bacillus Subtilis and E.Coli O157:H7, two important spoiling and pathogenic bacteria of food.Materials and Methods: ZnO nanoparticles have been synthesized by molten salt method and have been characterized by X-ray diffraction, and scanning electron microscopy. Bacillus Subtilis and E.Coli O157:H7 have been inoculated in 2% and 4% w/w ZnO containing tryptic soy broth followed by the plot of their growth curve.Results: Treatments with both 2% and 4% concentrations of ZnO nanoparticles significantly reduced the number of E.Coli O157:H7 (p=0.001 and p Conclusion: Regarding the results of the present study, ZnO nanoparticles can significantly reduce the number of both bacteria however it seems that the effect for gram negative bacteria might be more dramatic. Manuscript profile -
Open Access Article
10 - Determination of the Antioxidant Activity of Calendula officinalis Extract and its Role in Synthesis of ZnO Nanoparticles
F. Nematollahi F. Taheri Konjini F. Zamani HergalaniIntroduction: The synthesis of zinc oxide nanoparticles is valuable due to its applications in the packaging and food industries as permitted additives to increase the shelf life.Materials and Methods: In this research, the synthesis of green nanoparticles of zinc MoreIntroduction: The synthesis of zinc oxide nanoparticles is valuable due to its applications in the packaging and food industries as permitted additives to increase the shelf life.Materials and Methods: In this research, the synthesis of green nanoparticles of zinc oxide were performed by zinc acetate dihydrate. Calendula officinalis extract was used as reducing and stabilizing agent. The prepared ZnO NPs were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Energy dispersive X- ray (EDX) and X-ray diffraction (XRD) analysis.Results: The size of nanoparticles prepared by Calendula officinalis extract was obtained at 8 to 22nm In addition, the antioxidant properties of prepared nanoparticles were analyzed in the terms of total phenolic and flavonoid content. The antioxidant activity of zinc oxide nanoparticles was evaluated using 2,2- diphenyl picryl hydrazyl (DPPH) method. Gallic acid was used as standard to draw the calibration curve. The amount of total phenolic compounds in aqueous extract of the plant was 303 mg of gallic acid per gram.Conclusion: Calendula officinalis extract showed high antioxidant activity and great potential for green synthesis of nanoparticles. The average diameter of nanoparticles synthesized without plant extract as a stabilizer, was larger than the green synthesized one (more than 18 nm). There was also less agglomeration in nanoparticles synthesized by Calendula officinalis extract. Manuscript profile -
Open Access Article
11 - Green Synthesis of zinc oxide Nanoparticles Using Apple Fruit and investigation its Antimicrobial Effects
Fateme Sadat Hoseini زهرا آقاجانیIn this research, zinc oxide nanoparticles (ZnO) were synthesized using apple extract, and then the physical and chemical properties of ZnO nanoparticles were evaluated using SEM, XRD, EDS, UV-Vis and FT-IR. The average size of ZnO nanoparticles using Debye-Scherrer equ MoreIn this research, zinc oxide nanoparticles (ZnO) were synthesized using apple extract, and then the physical and chemical properties of ZnO nanoparticles were evaluated using SEM, XRD, EDS, UV-Vis and FT-IR. The average size of ZnO nanoparticles using Debye-Scherrer equation was estimated at 10 nm. The nanoparticles synthesized by this method (using apple extract) exhibited antimicrobial properties against Candida albicans, which showed the diameter of the halo created by the specimen in this fungus was 26 mm. The XRD spectrum represents the formation of zinc oxide nanoparticles and is consistent with earlier reports. According to the SEM spectrum, zinc oxide is composed of uniform particles. According to the results of the EDS test, the presence of Zn in the synthesized nanoparticles has been confirmed using apple extract. In this research, zinc oxide nanoparticles (ZnO) were synthesized using apple extract, the physical and chemical properties of ZnO nanoparticles were evaluated using SEM, XRD, EDS, UV-Vis and FT-IR evaluation methods. The average size of nanoparticles ZnO was estimated using a 10-nm DSS equation. The synthesized particles with this method (using apple extract) showed antimicrobial properties against Candida albicans, which showed that the diameter of the halo created by the sample The mushroom was spotted at 26 mm. Manuscript profile -
Open Access Article
12 - Evaluation of antibacterial properties of linen fibers coated with Zinc Oxide nanocomposite on resistant bacterials caused by Urinary Tract Infections.
mahdiye sadat tayebi monir doudi nasrin talebianIntroduction: Urinary tract infection as one of the most common bacterial infections is known as a second cause of infection. However, sensitivity to a various health hygiene pads in children and Easy Life in elderly as well as poor sanitation can make people susceptibl MoreIntroduction: Urinary tract infection as one of the most common bacterial infections is known as a second cause of infection. However, sensitivity to a various health hygiene pads in children and Easy Life in elderly as well as poor sanitation can make people susceptible to infections of the urinary tract. For this reason, antibacterial textiles used in the preparation of health and medical textiles can deal with infections especially urinary tract infections effectively. Material and methods: First, the 550 clinical isolates were collected from several hospitals and laboratories in Shahreza city, among which, 100 bacterial isolates were positive and resistant to several antibiotics. Then the synthesized zinc oxide nanoparticles were established by using sol-gel method and under ultrasonic irradiation on linen bandages. Antibacterial activity of nano-fibers bacteria samples, based on zinc oxide by disk diffusion method in agar were assessed. Results and Conclusion: According to the results of nanofibers of zinc oxide have more antibacterial properties against gram-positive bacteria, causing urinary tract infections compared with negatives ones. It is hoped that the fibers introduced in this study in the future after the tests (in-situ) will be able to provide clothes for patients and personnel, gloves and surgical masks, and most importantly suture yarns, bandages, wound dressing and sanitary napkins should be used. Manuscript profile -
Open Access Article
13 - Study Kalamin D and Benzocaien on Tirosinas enzyme activity by Lineviverberg
Ali reza farrokh reyhane sariri Nikoo NasoohiTyrosinase, the enzyme responsible for biosynthesis of melani pigments has a special place. It is a metaloenzyme containing copper ions that catalyses two distinct reactions in the pathway of melanin biosynthesis. The monophenolase activity leads to hydroxylation of phe MoreTyrosinase, the enzyme responsible for biosynthesis of melani pigments has a special place. It is a metaloenzyme containing copper ions that catalyses two distinct reactions in the pathway of melanin biosynthesis. The monophenolase activity leads to hydroxylation of phenylalanin and the oxidation of 3, 4 dihydroxy phenylalanin to O-dopaquinon is through its diphenolase activity. Inhibitors and activators of the enzyme has a wide variety of effects on human health as well as in industrial applications. Considering the importance of pigments in human skin and hair and the role of tyrosinase in the production of melanin pigments, in the present research three important skin medications were selected for their effect on tyrosinase activity. In practical section, the enzyme was first extracted from banana skin followed by its characterization. The kinetic parameters were then investigated in the presence and absence of benzocaein, zinc oxide and kojic acid and the Michaelis Menton as well as Linweaver Burk plots were obtained. The results indicated that tyrosinase extracted from banana skin is similar to mushroom tyrosinase and its optimum temperature is higher than known tyrosinases. Therefore, by bearing in mind its low priced source, it can be recommended as an alternative to the commercial enzyme from mushroom. The results also showed that all three medicines were un-competitive inhibitors of tyrosinase. They reduced the maximum rate, Vmax of enzymatic reaction with no effect on Km. The highest inhibitory activity was obtained for zinc oxide Keywords: Tyrosinase, banana wastes, benzocaein, kojic acid, zinc oxide Manuscript profile -
Open Access Article
14 - Synthesis of zinc oxide nanoparticles with antimicrobial and antibiofilm activity against Klebsiella pneumonia
razieh ahmadinasab soheil Aghaei Mohammad Ali GasemzadehKlebsiella peneumoniae bacterium is part of the natural microfrola of the human body and are found in water, sewage, soil and part of the mouth, pharynx and intestines. Klebsiella can also cause infections in the urinary tract, lower biliary tract, and surgical wound si MoreKlebsiella peneumoniae bacterium is part of the natural microfrola of the human body and are found in water, sewage, soil and part of the mouth, pharynx and intestines. Klebsiella can also cause infections in the urinary tract, lower biliary tract, and surgical wound sites. It is also an opportunistic pathogen for patients with chronic pulmonary disease, enteric pathogenicity, nasal mucosa atrophy, and rhinoscleroma. This organism can causes food poisoning and gastritis. Biofilm formation by this bacterium on many surfaces, is one of the most important problems in the food industry. Metal nanoparticles are effective antimicrobial compounds for controlling and removing of bacterial biofilms from non-biomaterial surfaces. The main purpose of this investigation was synthesis of zinc oxide nanoparticles in-vitro condition and evaluation of their antimicrobial properties for inhibiting of biofilm formation and biofilm eradication of Klebsiella peneumoniae (ATCC700603). Method: In this study nano-particles of zinc oxide were synthesized mechanochemically and were confirmed using UV-vis, FTIR, EDX and Scanning Electron Microscopic procedures. Antimicrobial and antibiofilm properties of synthesized nanoparticles were determined using agar well diffusion and 96 well microplate dilution methods respectively. Results: Synthesized zinc oxide nanoparticles had circular structure with 30 nm size. Biofilm formation of kiebsiella pneumonia was performed using micrtiter plate assay. Antibiofilm activity and biofilm eradication of zinc oxide nanoparticles were obtained at 50 and 500 µg/ml respectively. Conclusions: Our study showed that zinc oxide nanoparticles can be used as the effective antimicrobial agents for inhibiting of biofilm formation of Klebsiella peneumoniae in the food industry. Manuscript profile -
Open Access Article
15 - Synthesis, Characterization and Application of Zinc Oxide with Micro Polyhedral and Nano Plate Morphologies for Simultaneous Decolorization of Two- dye Mixture in Wastewater
Maryam Movahedi -
Open Access Article
16 - Optimizing the Factors of Color Concentration, pH and the Amount of Nanoparticles in Removal of R198 Reactive Dye under UV Rays by Zinc Oxide Nanoparticles Extracted from Leaching Residue of Zinc Melting Factory
S. S. Gojrati M. Hajisafari M. M. Khosravirad -
Open Access Article
17 - Field Performance of Inlet Liner for Centrifugal Slurry Pump Manufactured by NR/PBR Nanocomposite
Puya Afsharjahanshahi Seyed Yousef Ahmadi-Brooghani Mehdi Raghebi Mohammad Ali Karimi -
Open Access Article
18 - Two efficient approaches for improving field emission properties of ZnO NRs
Marziyeh Advand Bahram Azizollah Ganji Mohammad Reza Kolahdouz -
Open Access Article
19 - Green synthesis of cellulose acetate/zinc oxide nanocomposite filter with plant extract and its application in water source pollution removal
Sohrab Hajmohammadi Dadkhoda Ghazanfari Enayatollah Sheikhhosseini Nahid Rastakhiz Hamideh AsadollahzadehWater resources are among the natural capitals of every country, therefore, the preservation of these natural resources is one of the important challenges of all countries. Excessive use of chemical and industrial materials has created many problems for these sources. T MoreWater resources are among the natural capitals of every country, therefore, the preservation of these natural resources is one of the important challenges of all countries. Excessive use of chemical and industrial materials has created many problems for these sources. Therefore, providing new methods to remove water pollutants is very important. The method of green synthesis of nanoparticles has attracted a lot of attention due to its features such as greater safety, compatibility with the environment, simplicity, and low cost. In this research work, the green synthesis of zinc oxide nanoparticles was carried out using the Daphne macronata plant and it was used in the preparation of a cellulose acetate/zinc oxide filter. The electron microscope image of the nano filter shows that the average diameter of nanofibers is about 40 nanometers and the average size of nanoparticles is about 47 nanometers. Also, the effect of this filter in removing methyl orange dye from water sources was investigated in different conditions of dye concentration, amount of adsorbent, and pH. The results showed that the cellulose acetate/zinc oxide nanocomposite filter is able to remove about 90% of methyl orange color in optimal conditions. Also, the results of investigating the antimicrobial effect of this structure on 4 samples of pathogenic bacteria, including Bacillus cereus and Staphylococcus epidermis, Salmonella, and Acinetobacter were carried out. The results showed that the largest diameter of the halo of non-growth is related to the pathogenic bacteria Bacillus cereus and Staphylococcus epidermis and is about 22 mm Manuscript profile -
Open Access Article
20 - Catalytic effect of green zinc oxide nanoparticles on multi –component reactions
Zohreh Dehghanizadeh Foad Buazar -
Open Access Article
21 - Self-assembly of ZnO nanoparticles on Low-Density Polyethylene Film with sol- gel and its Application for Milk Active Packaging
Mohammad Ali Shayegh sayedehmona Alavinassab Somayeh Shahedi Saeid JafariThis study reports the antibacterial capability of low-density polyethylene (LDPE) modified with ZnO nanoparticles using a Sol-Gel technique. Antibacterial activity of prepared films against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) was examined. MoreThis study reports the antibacterial capability of low-density polyethylene (LDPE) modified with ZnO nanoparticles using a Sol-Gel technique. Antibacterial activity of prepared films against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) was examined. The operational conditions such as pH, time, amount of ZnO nanoparticles, and silanol concentration were optimized using the response surface methodology (RSM). The proposed film under optimum conditions was applied for the packaging of the milk sample. The highest antibacterial activity of ZnO/LPDE were pH (6.0), time (103 min), amount of ZnO nanoparticles (0.68 % w/v) and silanol agent concentration (4.81 % v/v). The antibacterial properties of ZnO/LDPE films were assessed based on the diameter of the inhibition zone in a disk diffusion test against E. coli and S. aureus. These films have significantly reduced the growth of mentioned bacteria. Overall, antimicrobial packaging shows promise as an effective method to inhibit the growth of certain bacteria like E. coli and S. aureus in milk. The resulting ZnO/LDPE package films containing milk samples exhibit superior and prolonged antibacterial activity against E. coli and S. aureus in 7 and 14 days. Manuscript profile -
Open Access Article
22 - Anti-Inflammatory/Bacteria Potential of Gelatin/ZnO Nano Fiber Scaffold
Hamed Zare Shahnaz Nayebzadeh Abolfazl Davodiroknabdi Seyedhasan HataminasabBased on healthy properties of gelatin, strengthening it for using as multi functional material is essential. In this paper nano scaffold of gelatin was doped with nano zinc oxide (ZnO) (with different percent) and electrospun. The morphology of obtained nano scaffold w MoreBased on healthy properties of gelatin, strengthening it for using as multi functional material is essential. In this paper nano scaffold of gelatin was doped with nano zinc oxide (ZnO) (with different percent) and electrospun. The morphology of obtained nano scaffold was study by Field Emission Scanning Electron Microscope (F E S E M) and elemental mapping proved the present and distribution of nano zinc oxide (ZnO) in scaffold. Also, X ray Fluorescence (XRF) test was done to confirm the amount of used nano material. The anti bacterial property of the obtained scaffold was investigated against both gram negative and gram positive bacteria (Shigella and Staphylococcus Aureus respectively) and the results show that the nano scaffold has more than 96% anti bacterial property. On the other hands, the anti inflammatory effect of nano scaffold was investigated on rats and the results illustrated that nano scaffold is effective for edema decrease Manuscript profile -
Open Access Article
23 - Study of the properties of zinc oxide thin films prepared by sol-gel method
Hassan Absalanفیلم های نازک اکسیدروی با بکار گیری روش سل-ژل، با استفاده از زینک استات دی هیدرات،2- پروپانول و دی اتانول امین،بر روی زیرلایه های شیشه ای تهیه شده اند. خواص اپتیکی و ساختاری فیلم های تهیه شده، با استفاده از پراش سنج اشعه ایکس، روش بیناب نمائی نوری فرابنفش- مرئی و بررسی Moreفیلم های نازک اکسیدروی با بکار گیری روش سل-ژل، با استفاده از زینک استات دی هیدرات،2- پروپانول و دی اتانول امین،بر روی زیرلایه های شیشه ای تهیه شده اند. خواص اپتیکی و ساختاری فیلم های تهیه شده، با استفاده از پراش سنج اشعه ایکس، روش بیناب نمائی نوری فرابنفش- مرئی و بررسی های میکروسکوپی الکترونی مورد مطالعه قرار گرفته است. فیلم های تهیه شده تحت این شرایط، در محدوده مرئی بالای 400 نانومتر شفاف بوده و یک طول موج قطع فرابنفش تیزی در حوالی 380 نانومتر دیده می شود. ضخامت فیلم های تهیه شده در محدوده250 تا390 نانومتر می باشد. ثابت های اپتیکی فیلم های نازک مورد مطالعه، مانند ضریب شکست فیلم ها، با افزایش طول موج کاهش می یابند. فیلم های نازک اکسیدروی با بکار گیری روش سل-ژل، با استفاده از زینک استات دی هیدرات،2- پروپانول و دی اتانول امین،بر روی زیرلایه های شیشه ای تهیه شده اند. خواص اپتیکی و ساختاری فیلم های تهیه شده، با استفاده از پراش سنج اشعه ایکس، روش بیناب نمائی نوری فرابنفش- مرئی و بررسی های میکروسکوپی الکترونی مورد مطالعه قرار گرفته است. فیلم های تهیه شده تحت این شرایط، در محدوده مرئی بالای 400 نانومتر شفاف بوده و یک طول موج قطع فرابنفش تیزی در حوالی 380 نانومتر دیده می شود. ضخامت فیلم های تهیه شده در محدوده250 تا390 نانومتر می باشد. ثابت های اپتیکی فیلم های نازک مورد مطالعه، مانند ضریب شکست فیلم ها، با افزایش طول موج کاهش می یابند. Manuscript profile -
Open Access Article
24 - The Effect of Water Deficit Stress and Foliar Application of Zinc Oxide Nano Particles on Morphophysiological Characteristics of Landraces Withania coagulans L.
Mehdi Seyedi Seyed Amir Abbas Mousavi Mirkalaei Hossein ZahediIn order to evaluate the effect of water deficit stress and foliar application of zinc oxide nano particles on morphophysiological characteristics in Withania coagulans L. landraces, a factorial experiment in a completely randomized design with 3 replications was setup. MoreIn order to evaluate the effect of water deficit stress and foliar application of zinc oxide nano particles on morphophysiological characteristics in Withania coagulans L. landraces, a factorial experiment in a completely randomized design with 3 replications was setup. The experiment included various irrigation regimes (control), (medium stress), (severe stress), four landraces (Fanuj, Khash, Saravan and Sarbaz), with and without foliar application of zinc oxide nano particles. The experiment was conducted in green house of the faculty of Agriculture, Tarbiat Modares University, during 2018-2019. The highest leaf area (538.92 cm2) was related to Sarbaz in control irrigation and the lowest leaf area (245.88 cm2) was related to Khash in severe water deficit stress. Based on the comparison results, the mean of maximum plant dry weight (1.76 g) was related to Sarbaz and control irrigation and the lowest plant dry weight (0.63 g) was related to Fanuj and severe water deficit stress. Also, the highest amount of chlorophyll a (2.55 μmol.g-1) was related to Khash, control irrigation and foliar application of zinc oxide nano particles. The highest amount of chlorophyll b (1.26 μmol.g-1) was related to Fanuj, control irrigation and foliar application of zinc oxide nano particles, which was not significantly different from other landraces. Also, the lowest amount of chlorophyll b (0.62 μmol.g-1) was related to Khash, severe water deficit stress and without foliar application of zinc oxide nano particles. Sarbaz had the highest amount of anthocyanin (0.3 μmol.g-1) in the treatment of severe water deficit stress and lack of foliar application of zinc oxide nano particles, which was not significantly different from Saravan. Also, the lowest amount of anthocyanin (0.146 μmol.g-1) was related to Fanuj in the treatment of severe water deficit stress with foliar application of zinc oxide nano particles. Severe water deficit stress reduced the amount of traits tested. Also, the Sarbaz showed good tolerance to water deficit stress conditions compared to other landraces. The foliar application of zinc oxide nano particles also improved plant growth and increased some of the tested traits under stress conditions. Manuscript profile -
Open Access Article
25 - The effect of biocomposite coating based on Opopanax mucilage and gelatin containing zinc oxide nanoparticles enriched by peppermint (Mentha piperita L) essential oil on the microbial and sensory properties characteristics of rainbow trout (Oncorhynchus mykiss)
Mohammad Javad Rashidi leila Roozbeh nasiraie Shahin Zomorodi Sara JafarianConsidering the possible adverse effects on the sensory properties of food due to the use of essential oils in effective concentrations for antimicrobial and antioxidant activity, the use of combined methods can be effective. In this study, the effect of coating combina MoreConsidering the possible adverse effects on the sensory properties of food due to the use of essential oils in effective concentrations for antimicrobial and antioxidant activity, the use of combined methods can be effective. In this study, the effect of coating combination of gelatin and Opopanax mucilage containing 0.5% zinc oxide nanoparticles, enriched by concentrations of 0, 1.2, 1.6, and 2.0 % of peppermint essential oil and modified atmospheric packaging (MAP) on preventing the growth of microbial population rainbow trout fillets were evaluated during 20 days of storage in the refrigerator. The results showed that in all treatments the number of aerobic mesophilic bacteria, psychrotrophs, lactic acid bacteria, and coliforms as well as pH increased during the storage period but decreased by increasing peppermint essential oil (p<0.05). Also, the microbial load in treatments with a coating containing nanoparticles and MAP was significantly lower than in the control sample (p<0.05). The results of sensory evaluation also showed that the odor and color scores of the samples decreased during storage, which was the highest in the control and the lowest in the NPEO3 treatment (p<0.05). The results of the sensory evaluation were consistent with the results of microbial analysis. According to the results obtained in this study, using the mixture of 0.5 % zinc oxide nanoparticles and 50% peppermint essential oil in edible coating composed of Opopanax mucilage and gelatin for increasing the shelf life of rainbow trout fillet up to the 15th day is recommended. Manuscript profile -
Open Access Article
26 - Histopathological study of gill in common carp (Cyprinus carpio) and goldfish (Carassius auratus) during exposure to lethal concentrations of nano-zinc oxide, nano copper oxide and nano titanium dioxide
Aliakbar Hedayati Fatemeh Darabitabar hassan rezaeiApart from skin, gills are the first place of direct exposure of fish to toxins or pollutants therefore study of changes in gill structure is a suitable indicator of toxins or pollutants under stressful conditions. The aim of this study was to investigate pathological a MoreApart from skin, gills are the first place of direct exposure of fish to toxins or pollutants therefore study of changes in gill structure is a suitable indicator of toxins or pollutants under stressful conditions. The aim of this study was to investigate pathological alterations of gill tissue in common carp during exposure to different nanoparticles. For this study, 210 fry common carp with a total length of 7.36±0.30 cm and goldfish with a total length of 6.50±0.43 cm in 6 treatments with 3 replicates in each treatment were placed in 60 liter aquariums in groups of 11 individuals. Gill tissue samples of common carp and goldfish were taken 7 days after exposure to 50% lethal concentration of nano-zinc oxide, nano copper oxide and titanium dioxide nanoparticles. Histological changes were evident in samples exposed to nano-zinc oxide, nano copper oxide and titanium dioxide nanoparticles while no detectable changes were observed in control gill. The symptoms observed in both fish consisted of gill hyperplasia, adhesion of secondary lamellae, increased levels of mucus and hyperemia. The most common complication observed was gill hyperplasia and an increase in the amount of mucus. The results of this study indicate that 50% lethal concentration of nanoparticles of titanium, copper and zinc can cause tissue damage and destruction. Also, sub-lethal toxicity of nano-zinc oxide is higher than nano copper oxide and nano titanium dioxide and causes much wider effects on gill tissue of common carp and goldfish. Manuscript profile -
Open Access Article
27 - Synthesis of the Nano structured Zinc Oxide Using the Soft template of Cylea barbata miers Extract and its Promising Property for Dye Adsorbent
Oman Zuas Anis Kristiani Agus Haryono -
Open Access Article
28 - An illustration of photocatalytic properties of ZnO nanorods array films
A Nekoubin H Ghayour Najafabadi M Nasr Esfahani -
Open Access Article
29 - Investigation of phytochemical and morphological response of a local Cyamopsis tetragonoloba L. mass to foliar application of zinc oxide nanoparticles
Safoora Bazzi Ali Movafeghi Jafar Valizadeh Moharam ValizadehSince supplementation of plants with zinc is a solution to improve plant growth and compensate for zinc deficiency in soil, in this study to investigate the nutritional effect of 40 nm zinc oxide nanoparticles (ZnO-NPs) on morphological characteristics, seed gum and phy MoreSince supplementation of plants with zinc is a solution to improve plant growth and compensate for zinc deficiency in soil, in this study to investigate the nutritional effect of 40 nm zinc oxide nanoparticles (ZnO-NPs) on morphological characteristics, seed gum and phytochemical products of leaves of a native mass of Cyamopsis tetragonoloba L (Gguar plant) from Iranshahr a completely randomized experiment with three replicates was conducted at the University of Sistan and Baluchestan, Zahedan, Iran in mid-May 2018. Guar gum content, total phenol content and total flavonoid content were determined by the phenol-sulfuric acid, the Folin–Ciocalteu reagent, and colorimetric aluminum chloride methods, respectively. Seed cultivation was carried out in the greenhouse of Sistan and Baluchestan University in early June 2018. The treatments consisted of six different concentrations of ZnO-NPs including 0 (control), 25, 50, 100, 200, and 500 mg L-1 by foliar application of guar plants in two stages (20 and 27 days after sowing seeds). Based on the results, with increasing the concentration of nanoparticles, the number of seeds in pod gradually decreased, but no significant difference was observed in pod length and root length. However, stem length, stem dry weight, root dry weight, leaf area, stomata density, leaf dry weight, 500-seed weight, pod dry weight gradually increased, with the maximum increase observed in the 500 mg L-1 treatment compared to the control. In this treatment, seed gum, total phenol and total flavonoids increased by 2.55, 2.10 and 1.34 times compared to the control treatment, respectively. According to the results, ZnO-NPs nanoparticles with the properties used in this study can be used to improve the growth characteristics and increase the amount of seed gum, phenol and flavonoids of guava leaves and obtain the benefits of their medicinal applications. Manuscript profile -
Open Access Article
30 - Evaluation of Antibacterial Effect of Zinc Oxide Nanoparticles Synthesized by Wet-chemically Method on Multidrug-resistant Uropathogenic Bacteria
Maryam Bagheri Mohammad Gholipour Monir Doudi Ali Mohammad Ahadi Gholam Reza AmiriZinc oxide (ZnO) nanoparticles have been attracted for their antibacterial effects along with their safety, suitable physicochemical properties, and cost effectivity. The aim of this study was to synthesize ZnO nanoparticles and investigate their antibacterial effects o MoreZinc oxide (ZnO) nanoparticles have been attracted for their antibacterial effects along with their safety, suitable physicochemical properties, and cost effectivity. The aim of this study was to synthesize ZnO nanoparticles and investigate their antibacterial effects on multidrug resistant (MDR) uropathogenic bacteria. ZnO nanoparticles were constructed by wet chemical method with inhibitor. Structural and optical evaluation of zinc oxide nanoparticles was performed by Ultraviolet absorption spectroscopy, X-ray diffraction (XRD), and Tunneling microscopy. Uropathogenic bacteria were isolated from the patient’s pediatric urine and identified through biochemical testing. Antibiotic resistance pattern of the isolates was determined by disk diffusion method and the antibacterial activity of ZnO nanoparticles was detected by pour plate method at the concentrations of 0.0125, 0.025, 0.05, 0.1, 0.2, 0.4, and 0.8 g/l. The produced ZnO nanoparticles had a hexagonal shape with the crystal size of 15 nm and an optical size of 3 nm. The minimum effective concentration of these nanoparticles that inhibited the bacterial growth was 0.05 g/l. E.coli was generally found to be the most frequent cause of UTI in children in Isfahan, in the center of iran, with the mean prevalence of 64%. Most cases of resistance were related to Ampicillin, Amoxicillin, Tetracycline and the highest sensitivity was related to Chloramphenicol, Gentamicin, Trimethoprim/Sulfamethoxazol. The results of the present study, in accordance to the previously approved safe characteristics of ZnO nanoparticles, concentration of 0.05 g/l is proposed to be evaluated for in vivo usage for treatment of urinary tract infections. Manuscript profile -
Open Access Article
31 - Histopathological effects of zinc oxide (ZnO) nanoparticles on skin and muscle tissues of rats
Sepideh Arbabi-Bidgoli Parisa Saberi-Hasanabadi -
Open Access Article
32 - The application of ZnO nanoparticles as a photocatalyst for wastewater treatment: A review
Mahdi Sanavi Fard Aref ShokriEver-increasing environmental pollutions and water scarcity are highly challenging issues that pose formidable obstacles to human beings on all fronts. Hetero-photocatalytic methods which utilized semiconductors as photocatalysts are highly promising and green technolog MoreEver-increasing environmental pollutions and water scarcity are highly challenging issues that pose formidable obstacles to human beings on all fronts. Hetero-photocatalytic methods which utilized semiconductors as photocatalysts are highly promising and green technologies for the degradation of recalcitrant organic pollutants which cannot be completely removed by conventional treatment processes. In the view of the current scenario, zinc oxide nanostructures have been demonstrated to be predominant photocatalyst candidates for photodegradation because of their cost-effectiveness, non-toxicity, strong oxidation capability, flexibility in synthesizing, earth-abundance nature, easy crystallization, and high performance in the absorption over an extensive fraction of solar spectrum in comparison with titanium dioxide. Nevertheless, bare zinc oxide possesses several intrinsic limitations, like high recombination rate of the photogenerated charge carriers, limited solar light application, photo corrosion, broad bandgap and limited visible light absorption. Moreover, photocatalysts separation from remediated solutions restricts their large-scale applications. In this review paper, the authors briefly discussed basic principles of the zinc oxide photocatalytic process besides various modifications such as coupling with low bandgap semiconductors like metal and non-metal doping, synthesizing with graphene oxide, or reduced graphene oxide and their integration in magnetic materials to successfully addressing aforesaid disconcerting challenges. Moreover, hybridized photocatalytic and membrane systems are explored. Finally, challenges and future research directions are proposed for giving profound and well-defined insights toward reaching fully exploited zinc oxide-based nanoparticles in the field of water and wastewater treatments. Manuscript profile -
Open Access Article
33 - Exfoliated graphite/Selenium-Zinc Oxide Nanocomposites for Photodegradation of Organic Dye in Water and Its Antibacterial Activity Against Aater Borne Pathogens
Olubori Idowu Sonde Moses Gbenga Peleyeju Fatai Oladipupo Oladoyinbo Adejare Rasaq Oloyede Tajudeen Adeniyi Afolabi Hameed Adekola Adesokan Omotayo Ademola Arotiba Enoch Olugbenga Dare -
Open Access Article
34 - Histopathological effects of zinc oxide nanoparticles (ZnO) on skin and muscle tissues of rats
Parisa Saberi-Hasanabadi Sepideh Arbabi-Bidgoli -
Open Access Article
35 - Characterization of the mechanical properties of the sago polymer films incorporated with the Abelmoschus esculentus extract nano Zinc-oxide and nanozincoxide-cadmium
Majedeh Mansourian, Masoumeh Hosseinzadeh* Ali Mirabi -
Open Access Article
36 - Characterization of the mechanical properties of sago polymer films incorporated with the Flax seed extract, nano Zinc-oxide and nanozinc oxide-cadmium
Mohammad Mohammadi Masoumeh Hosseinzadeh Sadegh Salmanpour -
Open Access Article
37 - Evaluate the inhibitory activity of ZnO nanoparticles against standard strains and isolates of Staphylococcus aureus and Escherichia coli isolated from food samples
alireaz masiha maryam baradaran khosro isazadehThe antibacterial effect of different concentrations of zinc oxide nanoparticles on standard and isolated S. aureus and E. coli from food were studied. In this experimental study, suspension has been prepared from commercial ZnO nanoparticles in broth medium. After prep MoreThe antibacterial effect of different concentrations of zinc oxide nanoparticles on standard and isolated S. aureus and E. coli from food were studied. In this experimental study, suspension has been prepared from commercial ZnO nanoparticles in broth medium. After preparing standard strain and the strain were isolated from food samples, the effect of 1 and 2 times of Minimum Inhibitory Concentration (MIC) and also MBC test for ZnO nanoparticles on bacteria in different time were analyzed. According to the results obtained in this study, the maximum diameter of growth inhibition related to the concentration in5000 μg/ml zinc oxide nanoparticles for standard and isolated strain of E. coli. The average diameter of growth inhibition of standard strain of E. coli PTCC1399 and S. aureus PTCC11189 respectively were17.4 and 20.5 mm. The average diameter of the growth of E. coli and S. aureus isolated from foods respectively were 18.4 and 15.4 mm. A comparison of average MIC and MBC ZnO nanoparticles on the bacteria strains by Duncan test (p˂0.005) showed that the MBC is higher than the MIC in whole position bacteria. A ZnO nanoparticle among bacteria has most inhibition onS.aureu and for E. coli ST showed least impact. Results showed that mean comparison testis significantly different. Among times, zero time has the highest OD and the lowest OD was obtained in 240 second. This study showed that zinc oxide nanoparticles can be used to inhibit mentioned bacteria and can be a potential for alternative preservatives to prevent food spoilage possess. Manuscript profile -
Open Access Article
38 - The antimicrobial effect of basil seed mucilage-ZnO nanocomposite coating on the quality of cheddar cheese during ripening
Sahar Kheirkhah Foghara sara jafarian Shahin Zomorodi Leila Roozbeh Asghar Khosrowshahi aslCheddar cheese is a hard type of cheese. It is coated traditionally by a special wax. Commercial coating materials which are used for coating are non-edible as a result they are undesirable due to environmental pollution and allergies caused in some consumers. Today, bi MoreCheddar cheese is a hard type of cheese. It is coated traditionally by a special wax. Commercial coating materials which are used for coating are non-edible as a result they are undesirable due to environmental pollution and allergies caused in some consumers. Today, biodegradable films are receiving more attention. In this study, the effect of edible coating of basil seed mucilage containing zinc oxide nanoparticles (ZnO-NP) in three levels of zero, 0.25 and 0.5% on the quality properties of cheddar cheese was investigated during ripening for 90 days. The results of experiments showed that at the end of ripening, the highest amount of salt and fat and the lowest amount of moisture were related to the sample with mucilage coating containing 0.5% of ZnO-NP. Also, during ripening, in all samples the number of non-starter lactic acid bacteria increased, but the number of starter bacteria increased first and then decreased (p < 0.01). Also, in all treatments, the total number of mesophilic aerobic bacteria, Pseudomonas, mold and yeast increased significantly during storage, which was the lowest in samples with coating containing ZnO-NP (p < 0.01). In addition, ZnO-NP coatings prevented mold growth on the surface of cheddar cheese samples. According to the results obtained of this study, basil seed mucilage containing 0.5% ZnO-NP can be used as a coating in cheddar cheese without any adverse effect on the flavor of cheese. Manuscript profile -
Open Access Article
39 - Highly efficient synthesis of carboacyclic nucleosides catalyzed by zinc oxide in 1-butyl-3-methylimidazolium bromide (ZnO/[bmim]Br)
Tarlan Salehi-Hamzehkhani Marzieh Hatami Abdolkarim Zare Ahmad Reza Moosavi-Zare Abolfath Parhami Zahra Khedri Hamideh Kabgani Mohammad Beikagha Raheleh Salamipoor -
Open Access Article
40 - Introducing Pt/ZnO as a new non carbon substrate electro catalyst for oxygen reduction reaction at low temperature acidic fuel cells
Rasol Abdullah Mirzaie Fatemeh Hamedi -
Open Access Article
41 - Eco-friendly synthesis of zinc oxide nanoparticles using Bacillus Subtilis, characterization and antibacterial potential against Staphylococcus aureus associated with cardiac catheterization
Suaad Fazaa -
Open Access Article
42 - تأثیر مکملسازی نانو ذرات اکسید روی بر عملکرد رشد و تلفات ناشی از آسیت در جوجههای گوشتی
م. فتحیتعداد 600 قطعه جوجه گوشتی نر (راس 308) به چهار گروه آزمایشی ( 5 تکرار و 30 پرنده در هر تکرار) شامل 0، 10، 20 و 40 میلیگرم نانوذرات اکسید روی در کیلوگرم جیره پایه تقسیم شدند. برای القاء آسیت، همه پرندگان تحت برنامه دمایی سرد (15 تا 18 درجه سانتی­گراد) قرار گرفتند. نم Moreتعداد 600 قطعه جوجه گوشتی نر (راس 308) به چهار گروه آزمایشی ( 5 تکرار و 30 پرنده در هر تکرار) شامل 0، 10، 20 و 40 میلیگرم نانوذرات اکسید روی در کیلوگرم جیره پایه تقسیم شدند. برای القاء آسیت، همه پرندگان تحت برنامه دمایی سرد (15 تا 18 درجه سانتی­گراد) قرار گرفتند. نمونه خونی شامل؛ فعالیت آنزیم آسپارتات آمینوترانسفراز، آلانین آمینوترانسفراز، لاکتات دهیدروژناز، پروتئین، هموگلوبین، هماتوکریت، گلبول قرمز، گلبول سفید و سطح مالون دی­آلدئید اندازه­گیری شدند. تلفات نیز جهت تعیین دلیل مرگ آسیتی، بررسی شد. روز آخر آزمایش (روز 42) از هر تکرار 2 قطعه پرنده به طور تصادفی انتخاب شده و بعد از کشتار، شاخص آسیتی محاسبه گردید. میانگین افزایش وزن بدن، میانگین خوراک مصرفی و ضریب تبدیل خوراک نیز ب طور هفتگی محاسبه گردید. نتایج نشان داد، سطح 40 میلیگرم نانو ذرات اکسید روی به طور معنی­داری سبب کاهش سطح مالون­دی­­آلدئید در پلاسما و کبد پرندگان شد. علاوه بر این، سطوح 20 و 40 میلیگرم سبب کاهش معنی­دار شاخصی آسیتی و تلفات ناشی از آسیت شدند. همچنین، در حالیکه نانو ذرات اکسید روی در همه سطوح سبب افزایش وزن حاصله شد، سطح 40 میلیگرم سبب کاهش معنی­دار ضریب تبدیل خوراک شد. نتیجه این تحقیق نشان داد که استفاده از نانو ذرات اکسید روی سبب بهبود عملکرد و کاهش تلفات آسیتی در جوجه­های گوشتی شد و مناسب­ترین سطح آن در این 40 میلیگرم بود. Manuscript profile -
Open Access Article
43 - Effects of in ovo Injection of Nano Zinc Oxide on the Hatchability, Immunity and Antioxidant Responses, and Relative Gene Expressions of Interleukin 2 and 12 in Broiler Chickens
J. Palouj M. Kazemi-Fard M. Rezaei Z. Ansari-Piresaraei -
Open Access Article
44 - Zinc oxide nano particles alleviate drought stress effects on soybean antioxidant system during germination
Mohammad Sedghi Parisa Sheikhnavaz Jahed Sahar Gholi-Tolouie -
Open Access Article
45 - Aniline removal from polluted water with photocatalytic oxidation process by zinc oxide loaded with carbon
parvaneh nakhostin panahi afsaneh nikooAbstract: Aniline has high toxicity and is immediately absorbed through the skin. If aniline is swallowed or its vapor is inhaled, it will lead to death. Considering aniline risks on the environment and human health, it is necessary to prevent its spread into the enviro MoreAbstract: Aniline has high toxicity and is immediately absorbed through the skin. If aniline is swallowed or its vapor is inhaled, it will lead to death. Considering aniline risks on the environment and human health, it is necessary to prevent its spread into the environment. This study’s purpose is to remove aniline using a photocatalytic process under visible light irradiation. For this purpose, the zinc oxide was loaded with different values of reduced graphene oxide and graphene. The photocatalytic activity of modified zinc oxides (rGO/ZnO and G/ZnO) was investigated for aniline contaminant removal under visible light radiation. The physicochemical properties of zinc oxide and modified zinc oxides were analyzed by XRD, SEM, IR, PL, TEM and UV–vis (DRS mode) spectroscopy. The results showed that rGO/ZnO and G/ZnO composites had higher photocatalytic activity than ZnO, and the G(10%wt)/ZnO photocatalyst showed the highest photocatalytic activity and efficiency in removing aniline contaminant (75%). Manuscript profile -
Open Access Article
46 - Preparation and evaluation of polyvinyl alcohol nanocomposite containing zinc oxide nanoparticles and montmorillonite
Negar Motakef Kazemi elaheh mollaakbari Raheleh HalabianThe purpose of this research is to investigate the mechanical, antibacterial, and cytotoxic properties of biocompatible polyvinyl alcohol (PVOH) nanocomposite modified with zinc oxide (ZnO) nanoparticles and montmorillonite (MMT) to prepare a film for use in food packag MoreThe purpose of this research is to investigate the mechanical, antibacterial, and cytotoxic properties of biocompatible polyvinyl alcohol (PVOH) nanocomposite modified with zinc oxide (ZnO) nanoparticles and montmorillonite (MMT) to prepare a film for use in food packaging. Zinc oxide nanoparticles were synthesized by hydrothermal method via chemical reduction process. This method was performed using zinc acetate salt as a metal precursor, soda as reductant and water as a solvent for 1 hour at a temperature of 80°C. The samples were characterized by X-ray diffraction (XRD) to evaluate the crystal structure, and field emission scanning electron microscope (FESEM) to check the size of the particles and morphology of the samples. The mechanical properties of the samples were investigated. The obtained results showed that the moisture content in the optimal film was reduced to 1.01 x 10-8 g/m3 and the tensile strength and Young's modulus were increased to 0.492 MPa and 24.1 Pa, respectively. The antibacterial activity against Escherichia coli was evaluated by the agar well method and the final nanocomposite showed the highest antibacterial property with the non-growth halo of 0.64 mm. Cytotoxicity of the samples was recorded using the MTT assay method on the HEK293 cell line after 1, 3, and 5 days. The highest percentage of normal cell viability was observed at the concentration of 0.25 mg/ml of the sample and the final nanocomposite showed the highest cell viability. Based on the obtained results, nanocomposite containing zinc oxide nanoparticles and montmorillonite can have a good potential for use in food packaging industries. Manuscript profile -
Open Access Article
47 - *Corresponding author Email:Journal of Applied Research in Chemistry143JARCStudy of biological activity of sulfonamide-schiff bases compounds coating with zinc (II) and copper(II) micro oxides
محمد یوسفی مژگان تحریری معصومه طباطبایی خیراله مهرانی محمود دهقانی اشکذریIn this study, two sulfonamide – Schiff base compounds "N'-(2-hydroxy-3-methoxybenzylidene)-4-methylbenzenesulfonohydrazide and 1,2-bis(2-hydrxy-3-methoxy-benzylidenehydrazine) (1) and N'-(2-hydroxy-3-methoxybenzylidene)-4-nitrobenzenesulfonohydrazide and 1,2-bis( MoreIn this study, two sulfonamide – Schiff base compounds "N'-(2-hydroxy-3-methoxybenzylidene)-4-methylbenzenesulfonohydrazide and 1,2-bis(2-hydrxy-3-methoxy-benzylidenehydrazine) (1) and N'-(2-hydroxy-3-methoxybenzylidene)-4-nitrobenzenesulfonohydrazide and 1,2-bis(2-hydrxy-3-methoxy-benzylidenehydrazine) (2)" were synthesized by sulfonyl chloride and Schiff base compounds. Copper and zinc oxides were coated by synthesized compounds and were tested for antibacterial activity. All compounds were identified by NMR and FTIR spectra, X-ray diffraction (XRD), and elemental analysis. Scanning Electron Microscope SEM was used for the morphology of micro metal oxides before and after coating with Sulfonamide-Schiff bases compounds. Accordingly, antibacterial activity of compounds against Gram-positive bacteria (Staphylococcus epidermidis and Staphylococcus saprophyticus) and Gram-negative bacteria (Proteus mirabilis) were tested. It should be noted that both have high antimicrobial activities. The result of the study shows that the antibacterial activities of the synthesized sulfonamide-schiff bases against gram positive and gram negative bacteria decrease after coating on micro metal oxides. It is also worth mentioning that Ampicilin and Penicilin have been utilized as two standard medicines for investigating the antibacterial activities. Manuscript profile -
Open Access Article
48 - Removal of cadmium ion from zinc oxide in rubber industries by chemically bonded chlorosulfonylcalix[4]arene to silica
ashkan bagheri chenari manochehr mamaghani mandana saber tehrani mohammad nikpasandZinc oxide is an important industrial material using in different industries, in particular rubber industries. This compound like the other industrial materials has amounts of impurities and then removal of those because of their undesirable influences on rubber compoun MoreZinc oxide is an important industrial material using in different industries, in particular rubber industries. This compound like the other industrial materials has amounts of impurities and then removal of those because of their undesirable influences on rubber compounds curing and environment, is taken into consideration. In this study, chemically bonded chlorosulfonylcalix[4]arene to silica gel was synthesized by using the methods in literature reports, afterwards it was used as an absorbent to remove cadmium ions from zinc oxide solution. The adsorption of metal ions from aqueous solution was investigated by atomic absorption spectroscopy. Sorption percentage and adsorption capacity were calculated by using the ions concentration in each level. The results showed that cadmium ions were removed from zinc oxide solution effectively by tetrachlorosulfonylcalix[4]arene-silica whilst silica gel without any reactive agent, could not remove the ions from the solution. Manuscript profile -
Open Access Article
49 - Preparation, identification and application of ZnO/Bentonite nanocomposite in nitrate removal from contaminated watere
رباب شاهی معصومه خاتمیان بهارک دیوبندBentonite is a clay which has high surface area and makes it a good option for the placement of metal oxide nanoparticles, such as zinc oxide, thereby forming a nanocomposite. In the recent years, various applications of this kind of nanocomposites have been investigate MoreBentonite is a clay which has high surface area and makes it a good option for the placement of metal oxide nanoparticles, such as zinc oxide, thereby forming a nanocomposite. In the recent years, various applications of this kind of nanocomposites have been investigated by researchers in water and wastewater treatment. Accordingly, in this research, the bentonite was powdered by ball mills and then, ZnO/Bentonite nanocomposite was prepared by ultrasound irradiation and gel degradation method with starch. The nanocomposite was identified by XRD, FTIR, SEM and EDX techniques, and the efficiency of the sample was studied for removing of nitrate ions from water. The results showed that environmental factors such as pH, contact time, adsorbent amount, and nitrate concentration were effective in removal percentage. Optimal removing percentage of the nitrate solution with 30 mg/l was achieved by 0.6 g of nanocomposite which could remove 70% of the nitrate from solution. Manuscript profile -
Open Access Article
50 - Effect of nano-zinc oxide (ZnO NPs) on hematological indices of Koi fish (Cyprinus carpio)
M. Bakhshi M. KazemiyanThe increased industrial applications of nanoparticles increase the possibility their deposition into aquatic ecosystems and thereby threatening the aquatic life. Therefore, this study aimed to provide the toxicological effects of ZnO NPs (0, 1,2,4,8 mg.L-1) on certain MoreThe increased industrial applications of nanoparticles increase the possibility their deposition into aquatic ecosystems and thereby threatening the aquatic life. Therefore, this study aimed to provide the toxicological effects of ZnO NPs (0, 1,2,4,8 mg.L-1) on certain hematological indices of Koi fish for a period of 2 and 10 days, under static bioassay. A significant decrease in hemoglobin (Hb) content 7.3±0.19, red blood cell (RBC) count 1.41±0.03, hematocrit (Hct) value 22±0.66, mean cellular volume (MCV) 155.35±5.29 and mean cellular hemoglobin (MCH) 51.2±2.07 (except on 4 mg.L-1dose) was noticed throughout the study period of 10 days when compared to control groups. In contrast, mean cellular hemoglobin concentration (MCHC) levels 4±0.23 were found to increase during the study period.Our results demonstrate that high ZnO NPs concentrations in the aquatic environment may have adverse effects and cause acute changes on hematological parameters of Koi fish. Manuscript profile -
Open Access Article
51 - Biosynthesis of ZnO nanoparticles using green tea extract and determination of its antibiofilm effect on Pseudomonas aeruginosa strains isolated from wound infection
Behrooz Shojaee Sadi Shima Chehreii Mahla EsmaeiliBackground & Objectives: Owing to the antimicrobial activity of ZnO nanoparticles without causing resistance, such substances could be considered as an appropriate alternative to prevent bacterial biofilm formation. The aim of this study was to the biosynthesis of Z MoreBackground & Objectives: Owing to the antimicrobial activity of ZnO nanoparticles without causing resistance, such substances could be considered as an appropriate alternative to prevent bacterial biofilm formation. The aim of this study was to the biosynthesis of ZnO nanoparticles using green tea extract and determination of its effect on biofilm formation in Pseudomonas aeruginosa isolates separated from wound infection. Materials & Methods: In this cross-sectional study, biosynthetic nanoparticles were evaluated by X-ray diffraction, energy dispersive X-ray analysis, scanning electron microscopy and transmission electron microscopy. Determination of antimicrobial activity and minimum inhibitory concentration of nanoparticles were done by micro broth dilution method. The antibiofilm activity was investigated using biofilm formation by O'Toole 2011 method. Results: The biosynthesis of nanoparticles was confirmed by analysis. The size of the nanoparticles was determined in the range of 10 to 90 with an average of less than 40 nm. The nanoparticles had anti-microbial activities in concentrations of 250, 500 and 1000 ug/mL and minimum inhibitory concentration of 500 ug/mL was reported. The antimicrobial and antibiofilm effects of the nanoparticles rose with increasing the concentrations. Conclusion: The biosynthesis of nanoparticles with the extract has a variety of benefits such as simplicity, good stability, without energy consumption, less time-consuming, non-toxic wastes, economical efficiency, and large scale synthesis capability. According to the antimicrobial and antibiofilm properties, the use of these nanoparticles as coatings in medical equipment and food industries is recommended. Manuscript profile -
Open Access Article
52 - Analysis of zinc resistance gene in zinc and zinc oxide nanoparticles resistant Pseudomonas stutzeri SEE-1 isolated from soil
Shahla Soltani Nezhad Mohammad Rabbani Khorasgani Giti EmtiaziBackground & Objectives: Environmental pollution to toxic heavy metals is one of global environmental problems. Microorganisms perform several mechanisms to reduce the intracellular concentration of toxic pollutants. The objective of this study was to identify zinc MoreBackground & Objectives: Environmental pollution to toxic heavy metals is one of global environmental problems. Microorganisms perform several mechanisms to reduce the intracellular concentration of toxic pollutants. The objective of this study was to identify zinc resistance determinant (czcC gene) in zinc resistant Pseudomonas stutzeri SEE-1 isolated from soil. Materials & Methods: The strain was performed on a P. stutzeri strain isolated previously from soil by culture on MTBE (Methyl Tertiary Butyl Ether). The maximum tolerable concentrations of zinc ions and zinc oxide nanoparticles were determined. PCR amplification was used to investigate the czcC gene. The nucleotide sequence was translated into protein sequence and its sequence was compared with other similar sequences in other zinc resistant bacteria. Results: The highest tolerable concentrations of zinc ion and zinc nanooxide was measured at 4mM and 600 µg ml-1, respectively. The primers used for the amplification of the Zn-resistance gene (czcC) yielded a approximately 250 bp band. The comparison of czcC with other sequences in the gene bank database demonstrated 100% similarities with czcC gene in P. stutzeri 1501. Conclusion: The results of this study showed that soils contaminated with heavy metals are potential sources for the isolation of resistant strains to heavy metals and metal oxide nanoparticles. Understanding the genetic basis of bacterial resistance to heavy metals can improve application of these natural mechanisms to provide a safer environment for all living things. Manuscript profile -
Open Access Article
53 - Preparation and Characterization of Novel Bionanocomposite Based on Tapioca Starch/Gelatin/Nanorod-rich ZnO: Towards Finding Antimicrobial Coating for Nuts
M. M. Marvizadeh A. Mohammadi Nafchi M. Jokar -
Open Access Article
54 - Improved Physicochemical Properties of Tapioca Starch / Bovine Gelatin Biodegradable Films with Zinc Oxide Nanorod
Mohammad Mehdi Marvizadeh Abdorreza Mohammadi Nafchi Maryam Jokar -
Open Access Article
55 - Supplemental Effect of Zinc Oxide Nanoparticles and Prangos ferulacea Butanol Extract on Blood Glucose of Diabetic Wistar Rats
Hamid Dadar Reza Bzorgyan Freshteh Rahdan Elahe Piraei Yadollah Edalatpanah -
Open Access Article
56 - Zinc Oxide Nanoparticles Absorption Rate in the Heart Tissue of Female Mice
Ramona Kasra Kermanshahi Vida Hojati Abdolhossein Shiravi -
Open Access Article
57 - High-Barrier and Light–protective Bionanocomposite Film Based on Rye Starch/nanorod-ZnO for Food Packaging Applications
Neda Fallah Mohammad Mehdi Marvizadeh Reihaneh Jahangiri Azam Zeinalzadeh Abdorreza Mohammadi Nafchi -
Open Access Article
58 - Adsorption and Removal of Pollutants (dyes) from Wastewater Using Different Types of Low-cost Adsorbents: A review
Ahmed B. Mahdi Aseel M. Aljeboree Ayad F. Alkaim -
Open Access Article
59 - Preparation of ZnO/CeO2 Nanocomposite Arrays within Monolithic Cordierite Honeycomb
ایمان صفائیIn this study, ordered ZnO/CeO2 nanocomposite arrays were synthesized within the monolithic cordierite honeycomb using a simple, green and cost effective hydrothermal method. Primary ZnO seeds with (0 0 2) texture were grown within honeycomb’s channels by dipping MoreIn this study, ordered ZnO/CeO2 nanocomposite arrays were synthesized within the monolithic cordierite honeycomb using a simple, green and cost effective hydrothermal method. Primary ZnO seeds with (0 0 2) texture were grown within honeycomb’s channels by dipping technique and subsequent heating of the substrates at 350˚C. The average diameter of ZnO seed particles was estimated to be 60 nm from SEM micrographs by the use of Digimizer software. Highly aligned, compact and homogenous ZnO nanorod arrays with the diameter of 200 nm were formed in monolithic cordierite honeycomb by a novel two-step hydrothermal method at 80 oC. ZnO nanorod arrays were used as a core for the preparation of ceria coating. A ceria coating was deposited on ZnO nanorods in the second step of hydrothermal synthesis. Formation of ZnO and ceria phases was also confirmed by X-ray diffraction results. Manuscript profile -
Open Access Article
60 - Fabrication of Nanofibers Core - Shell Oxide by One Step Electrospinning Method
حجت رفیعی پور محمد رضا واعظی اصغر کاظم زادهIn this paper, core - shell nanofibers were synthesized by single stage electrospinning. To achieve on this aim, a coaxial needle was used, and oxides precursor were solved in polyvinyl alcohol (PVA) solution, and injected by separate syringes which connected to one pum MoreIn this paper, core - shell nanofibers were synthesized by single stage electrospinning. To achieve on this aim, a coaxial needle was used, and oxides precursor were solved in polyvinyl alcohol (PVA) solution, and injected by separate syringes which connected to one pump. Calcination was done on synthsised core – shell nanofibers. The morphology and microstructure of nanofibers were examined by field emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The final structure is ZnO as shell and SnO2 as core. The core diameter and the shell thickness nanofiber from TEM image are approximately 45 nm and 25 nm, respectively. The average diameters of as-electrospun and calcined core - shell nanofibers are about 175 and 79 nm, respectively. Manuscript profile -
Open Access Article
61 - Biochemical and Histopathological Study of the Toxicity of Zinc Oxide Nanoparticles on Liver in Rat
S.M Hosseini A.H Moshrefi رضا Amani S.V Razavimehr M.H AghajanikhahZinc oxide (ZnO) is one of the most widely used materials in diverse industrial fields, for this reason most widely produced and Have many technological applications. The human body may be intentionally or unintentionally exposed to these nanoparticles. In this study, a MoreZinc oxide (ZnO) is one of the most widely used materials in diverse industrial fields, for this reason most widely produced and Have many technological applications. The human body may be intentionally or unintentionally exposed to these nanoparticles. In this study, acute toxicity of zinc oxide nanoparticles on the liver enzymes and liver histopathology was evaluated. Fifty female rats with 180-220 grams of weight were divided into five groups, including control, Sham and Three groups with different doses of ZnO nanoparticle (25, 50 and 100 mg/kg twice a week for four weeks). The rats were then sacrificed and cholesterol, triglycerides, totalprotein, albumin and liver enzymes (ALT, AST and ALP) were determined and livers were fixed in formalin processed, sectioned and stained with Hematoxylin- Eosin. After removal of the tissue, samples digestion and zinc concentrations were measured by atomic absorption; Finally Data were analyzed using one way ANOVA. Also the most of the Zno nanoparticles absorption on the dose of 100 mg/kg was observed. Histopathological analysis of liver sections showed tissue damage, such as necrosis, congestion and vacuolar degeneration at a dose of 25 mg/ kg andin addition inflammatorycell infiltrationin doses 50 and 100 mg/kg was observed. In Serological studyalso increased serum ALT, AST and ALP Liver enzymes levels. Results of the present study showed the dose-dependent toxicity of ZnO nanoparticles on the liver; therefore exposure to nanoparticles can make serious risks in humans. Manuscript profile -
Open Access Article
62 - Investigation of Zinc Oxide NanoparticlesDeposition Values in Lung of Female Mice of NMRI Variant
پروانه Khalilian عبدالحسین Shiravi حسین AbbaspourNanotechnology is a term which refers to all advanced technologies of Nano scale. By Nano scale, a dimension of 1-100 nanometers is presumed. Nano zinc oxide is one of the most important nanomaterials which is widely used in business and industry and this has caused som MoreNanotechnology is a term which refers to all advanced technologies of Nano scale. By Nano scale, a dimension of 1-100 nanometers is presumed. Nano zinc oxide is one of the most important nanomaterials which is widely used in business and industry and this has caused some concerts regarding its effect on the environment and human health. There are not many studies of harms of these materials to the body. The present study was done to define the role of zinc oxide nanoparticles and its deposition values in lung. Syrian female mice of NMRI variant were divided into three groups of 10 each: control, 1000 ppm/kg zinc oxide nanoparticles and 2000 ppm/kg zinc oxide nanoparticles treated groups. During a period of 10 days, different doses of zinc oxide nanoparticles (i.e. 1000 and 2000 ppm/kg) were given to treated groups by inhalation, the control group received distilled water by inhalation. Then the mice were dissected and lung was prepared for investigation of zinc oxide nanoparticles deposition by Atomic Absorption Spectrometer. Statistical analysis showed that zinc oxide nanoparticles had significant difference in tissue of the lung which had received doses 1000 and 2000 ppm/kg compared with control group. Consumption of zinc oxide nanoparticles in doses of 1000 and 2000 ppm/kg, deposition of this material significantly increased in lung. Manuscript profile -
Open Access Article
63 - Investigation of Deposition Amount of Zinc Oxide Nanoparticles with Various Doses in Spleen of Female Mice
R. Kasra A. Shiravi V. HojatiDue to the increasing production of ZnO nanoparticles and their useful applications in biological systems, fewer studies have been performed about the side effects of these substances on the organism's body. To this end, in this study, we have investigated the depositio MoreDue to the increasing production of ZnO nanoparticles and their useful applications in biological systems, fewer studies have been performed about the side effects of these substances on the organism's body. To this end, in this study, we have investigated the deposition amount of zinc oxide nanoparticles on spleen of Syrian female NMRI mice. In this experimental study, 20 heads of female NMRI mice have been studied in the experimental and control groups. ZnO nanoparticles at concentrations of 100 and 300 mg per kg fed in the drinking water for 28 days, and after 28 days the mice were sacrificed, spleen tissue was removed and solved in the acid, and then the amount of deposited zinc oxide in the tissues was measured by atomic absorption spectrophotometry. According to the obtained results, it is observed that there are significant differences between the consumer groups (of ZnO nanoparticles) and control group. Deposition of Zinc oxide nanoparticles which was studied in the drinking water for 28 days in the mentioned experimental groups has had significant effects on the spleen. Manuscript profile -
Open Access Article
64 - Investigation on the Effect of Zinc Oxide Nanoparticle on LH, FSH and Testosterone Hormones in Adult Male NMRI Mice
زیبا مظفری نسیم حیاتی رودباری کاظم پریور شیوا ایرانیNanoparticles have widespread application in all aspects of modern life because of unique features of them as small size and high surface area Several studies have been done to explore the probable detrimental effects of nano-particles on human reproduction. The objecti MoreNanoparticles have widespread application in all aspects of modern life because of unique features of them as small size and high surface area Several studies have been done to explore the probable detrimental effects of nano-particles on human reproduction. The objective of this study was to investigate the effect of zinc oxide nanoparticles on LH, FSH and testosterone hormones in adult male mice. In the present study, 30 NMRI mice were divided into 5 groups. Single injection with different doses of zinc oxide nano particles were applied intraperitoneally (250, 500 and 700 mg/kg). Then serum level of LH, FSH and testosterone hormones were measured using ELISA method. The results were analyzed by ANOVA and Tukey test. The results showed that zinc oxide nanoparticles in 250 and 700 mg/kg doses caused a significant increase in FSH and testosterone level in blood serum respectively compared with control group. This study showed that effects of nano zinc oxide is dose-dependent and Causes increase in Testosterone and FSH hormones while caused no significant change in LH hormone level. Manuscript profile -
Open Access Article
65 - Biosynthesis of Zinc Oxide Nanoparticles Using Curcumin and Evaluation of its Antioxidant Activity and Cytotoxicity
Elaheh Dianati Vida Hojati Jina Khayatzadeh Saeideh ZafarbalanejadBiocompatibility and stability of zinc oxide nanoparticles (ZnO NPs) synthesized using plants due to their wide applications in biomedical, industrial, cell imaging and biosensors is an interesting research field in the arena of nanotechnology. The present study involve MoreBiocompatibility and stability of zinc oxide nanoparticles (ZnO NPs) synthesized using plants due to their wide applications in biomedical, industrial, cell imaging and biosensors is an interesting research field in the arena of nanotechnology. The present study involved the synthesis of green stable zinc oxide nanoparticles using zinc acetate and aqueous extract of turmeric as a reducing agent. In this characterization study, the antioxidant and cytotoxic activities of the synthesized nanoparticles were investigated by different methods. First, nanoparticles were synthesized by green method and the properties of synthesized nanoparticles were investigated using various spectroscopic and microscopic techniques. Assessment of antioxidant activity was performed using DPPH free radical scavenging and cytotoxicity activity in fibroblasts by MTT method. The involvement of the bioactive compounds of curcumin in the stabilization of zinc oxide nanoparticles was confirmed by FTIR. FESEM electron microscopy showed irregular spherical, rod, and plate-like morphology with uneven surface. Antioxidant activities performed using the free radical scavenging method DPPH showed IC50 values higher than 500 μg/ ml. In addition, biosynthesized zinc oxide nanoparticles showed significant toxic effects on fibroblasts in a concentration and time dependent manner. In general, zinc oxide nanoparticles were synthesized through a sustainable, simple, and environmentally friendly green pathway using curcumin. Biosynthesized zinc oxide nanoparticles showed antioxidant activity and cytotoxicity. Manuscript profile -
Open Access Article
66 - The Effect of ZnO Nanoparticles Functionalized with Glutamic Acid and Conjugated with Thiosemicarbazide on the Expression of Bax, caspase-3, and bcl-2 Genes in Adenocarcinoma Gastric (AGS) Cell Line
Sadaf Beigi Ali Salehzadeh Hadi Habibbollahi Seyed Ataollah Sadat Shandiz Fariba SafaConjugation of metal nanoparticles (NPs) to thiosemicarbazide improves their stability and anticancer potential. This work was aimed at preparing ZnO NPs functionalized with glutamic acid conjugated to thiosemicarbazide (Zn@Glu/TSC). Then, the anticancer potential of na MoreConjugation of metal nanoparticles (NPs) to thiosemicarbazide improves their stability and anticancer potential. This work was aimed at preparing ZnO NPs functionalized with glutamic acid conjugated to thiosemicarbazide (Zn@Glu/TSC). Then, the anticancer potential of nanoparticles was studied by evaluating their cytotoxicity and the expression of the genes involved in cell apoptosis in AGS cancer cells. Physicochemical properties of the NPs were characterized using FT-IR, SEM, and TEM imaging, and Zeta potential assays. Cytotoxicity and inhibitory concentration 50% value of the NPs was determined using the MTT assay. Moreover, the expression of the caspase-3, bax, and bcl-2 genes among NPs treated AGS cells was investigated using Real-time PCR assay. According to the results, the NPs were spherical with a size range of 10-90 nm. FT-IR assay confirmed the proper synthesis of the NPs and the zeta potential was determined -11.7 mV. The synthesized NPs showed significant cytotoxicity at concentrations ≥ 15.62 µg/mL and 50% inhibitory concentration was determined 90µg/mL. Besides, the expression of caspase-3 and bax genes in NPs treated cells increased by 1.67 and 1.80 folds, respectively, while the bcl-2 gene was regulated by 0.70 folds, compared to the control cells. Manuscript profile -
Open Access Article
67 - Effect of Subacute Toxicity Nano Zinc Oxide (ZnO NPs) on Oxidative Stress Enzymes of Roach (Rutilus rutilus caspicus)
K. Karimzadeh A. Zahmatkesh E. SharifiToday, the excessive use of zinc oxide nanoparticles (ZnO NPs) has led to concerns about the potential environmental hazards caused by the presence of these particles in aquatic ecosystems. Therefore, the aim of this study was to investigate the toxic effects of zinc ox MoreToday, the excessive use of zinc oxide nanoparticles (ZnO NPs) has led to concerns about the potential environmental hazards caused by the presence of these particles in aquatic ecosystems. Therefore, the aim of this study was to investigate the toxic effects of zinc oxide nanoparticles (0.02, 0.05 and 0.1 mg/L) on the oxidative stress enzymes in brain tissue of roach during a period of 7 days. After homogenization of the brain tissue, the activity of oxidative stress enzymes such as superoxide dismutase (SOD), glutathione-S transferase (GST), catalase (CAT), glutathione (GSH) and malondialdehyde (MDA) was determined using biochemical methods. The SOD, CAT and GST activities were significantly increased by exposure to 0.1 mg/ml zinc nanoparticles compared with other concentrations in brain tissue of roach (P<0.05). However, the amount of glutathione decreased with increasing exposure dose. In amount of malondialdehyde dose-dependent manner was observed, since the maximum concentration was recorded at 0.1 mg/ml of nanoparticles (4.5 ± 5.3 nmol/g wet). The subacute toxicity of nanoparticles leads to the induction of free radical and oxidative stress in brain tissue of roach. The increase in the activity of antioxidant enzymes causes antioxidant defense system activation for scavenger in free radicals. Manuscript profile -
Open Access Article
68 - Introducing Bivalvia (Corbicula fluminea) as a Bio Absorber of Nanoparticle Pollutions of Zinc Oxide in Short Period
fatemeh baharvand fatemeh parvizi mir qadermazi zahra arab aliakbar hedayati mohammadsharif ranjbarIn this study the direct absorbance of Nano zinc oxide by a bivalvia (carbicula fluminea) tested in 48 h as short time period. The bivalvia stock with initial mean length 2.5 + 0.9 cm were gathered from nature resources and transferred into laboratory and distributed in MoreIn this study the direct absorbance of Nano zinc oxide by a bivalvia (carbicula fluminea) tested in 48 h as short time period. The bivalvia stock with initial mean length 2.5 + 0.9 cm were gathered from nature resources and transferred into laboratory and distributed in 10 aquariums. Nano particles were spread in oltrasonic with 400 rpm. The tanks water was emulsioned with nanoparticles by homogenizer in 14000 rpm. The treatments were exposed to 0.25, 2.5 & 25 ppm nanoparticles. The Nano zinc oxide stocks in bivalves tissue and their distribution were measured by ICP & DLS. The results showed that the most nanoparticles were observed in the treatment which exposed to 0.25 ppm pollution ( p <0.05) and the less absorbance was seen in the treatment which exposed to 25 ppm (p<0.05). The DLS test showed that the nanoparticles size was between 10-100 nanometers which confirmed that the nanoparticles were homogenized and didn’t sequestrate. In conclusion, the observance by bivalvia can be a benefit index for measuring the Nano zinc oxide's pollution in water. Manuscript profile -
Open Access Article
69 - Synthesis of ZnO:Ag nanoparticles and Evaluation its antimicrobial activity against common Isolated bacterial pathogens from dairy products
Khosro IssazadehSynthetic nanoparticles have unique physical and chemical properties. The most important characteristic of these nanoparticles is having a higher surface area than their counterparts of larger size. In this research 45 samples of dairy raw products after dilution of sam MoreSynthetic nanoparticles have unique physical and chemical properties. The most important characteristic of these nanoparticles is having a higher surface area than their counterparts of larger size. In this research 45 samples of dairy raw products after dilution of samples, to isolate Staphylococcus aureus and Escherichia coli were transferred to the Baird Parker Agar and Sorbitol Mac Conkey Agar media respectively, and were identified using a series of specific tests. Zinc oxide-doped nanopowder was synthesized by the sol-gel method. The antimicrobial effects of nanoparticles were investigated by the well diffusion method. The minimum inhibitory concentration (MIC) of Zinc oxide-doped nanopowder and minimum bactericidal concentration (MBC) were determined. The mean diameter zone of the inhibitory growth of strains of E. coli PTCC 1399 and E. coli (1) and E. coli (2) were 22.5, 18.5, and 15.4 mm respectively at a concentration of 50 mg/ml and the mean diameter zone of the inhibitory of S. aureus PTCC 1189, S. aureus (1) and S. aureus (2) standard strains were 24.5, 20.4 and 19.5 mm. In this concentration. MIC for E. coli PTCC 1399 was 1.75, and E. coli (isolate 1) and E. coli (isolate 2) were 1.55 and 3.13 mg/ml, respectively. In the case of further experiments, this nanoparticle can be used as a preservative. Manuscript profile -
Open Access Article
70 - Effect of foliar application of salicylic acid and zinc oxide on growth, photosynthetic pigments and antioxidant enzymes in tomato plants
fatemeh pezham Zahra Oraghi Ardebilli علیرضا لادن مقدم الهام دانائیThis study was conducted to investigate the growth and physiological responses of tomato (Solanum lycopersicum) plants to long-term foliar application of zinc oxide (ZnO) and salicylic acid (SA) in low concentration. This experiment was carried out under the pot conditi MoreThis study was conducted to investigate the growth and physiological responses of tomato (Solanum lycopersicum) plants to long-term foliar application of zinc oxide (ZnO) and salicylic acid (SA) in low concentration. This experiment was carried out under the pot conditions in cocopeat and perlite medium and Hoagland's nutrient solution was used to irrigate tomato seedlings. Tomato seedlings were sprayed with two concentrations (0 and 5 mg/l) zinc oxide and/or two dose (0 and 5 mg/l) of salicylic acid with three-day intervals during two months. Single and combined foliar application of salicylic acid and zinc oxide improved plant growth and fruit fresh weight. The applied treatments increased plant height, shoot fresh weight, root fresh weight, and fruit fresh weight. Individual and combined treatments of salicylic acid and zinc oxide also significantly increased the content of photosynthetic pigments, including chlorophyll a (Chla), Chlb, and carotenoids. A significant increase in the activity of catalase enzyme was recorded due to the foliar spray of zinc oxide and salicylic acid, especially the combined treatment. Peroxidase enzyme activity also showed an increasing trend in response to foliar application of zinc oxide and salicylic acid. Overall, this study provided physiological evidence on how the application of ZnO and salicylic acid in appropriate concentration can improve primary metabolism and antioxidant system. It is obvious that performing further researches, especially at molecular levels, can improve our knowledge in the field. Manuscript profile
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