Hydrogen Peroxide

Open Access Article

1 - A Study on the Antibacterial Activity of Lactic Acid Bacteria Isolated from Traditional Iranian Milk Samples
P. Taheri N. Samadi M. R. Khoshayand M. R. Fazeli H. Jamalifar M.R. Ehsani

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2 - Experimental and theoretical studies on green and efficient deoximation using H202 catalyzed by Montmorillonite-K10 supported MnC12
M. Mahmoodi Hashemi A. Ezabadi Gh.R. Najafi F. Mollaamin M. Khaleghian R. Zhiani

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3 - Experimental and theoretical studies on efficient regeneration of carbonyl compounds from oximes under green, mild and completely heterogeneous nanocatalysis
Gh.R. Najafi M. Saffari M. Masteri-Farahani F. Mollaamin

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4 - Simultaneous Effect of Temperature and Hydrogen Peroxid on Degradation of Anthocyanins in Three Berberis Species Juices
M. Farhadi Chitgar M. Varidi F. Shahidi A. Torabi

Introduction: Antocyanins provide a pleasant and attractive appearance in fruits and vegetables particularly fruit juices. Therefore it is necessary to study the effect of hydrogen peroxide (H2O2) as a widespread material in packaging sterilant in aseptic processing sys More

Introduction: Antocyanins provide a pleasant and attractive appearance in fruits and vegetables particularly fruit juices. Therefore it is necessary to study the effect of hydrogen peroxide (H2O2) as a widespread material in packaging sterilant in aseptic processing systems on anthocyanins from various juices. Materials and Methods: In this study, the simultaneous effect of hydrogen peroxide in five different concentrations and three different temperatures (10, 15, 20, 25 and 30 mmol/L) and (10, 20 and 30 ̊C) on degradation of anthocyanins in Berberis vulgaris, Berberis cratagina and Beberis integerrima juices have been investigated. Results: The degradation of anthocyanins in all treatments were fitted both zero and first order kinetics models. The results showed the degradation of anthocyanins in these three Berberis juices followed the first-order reaction kinetics. In most cases, the reaction rate constant (k) and half-life (t1/2) differed significantly among the three Berberis in various concentrations and temperatures (p<0.05). The difference between Berberis vulgaris juice and Berberis cratagina juice was lower. The reaction rate constant (k) increased and half-life (t1/2) decreased with increasing concentration of hydrogen peroxide in all juices. The temperature dependence of anthocyanins degradation was determined by calculating the activation energy (Ea) and temperature quotient (Q10). At the concentration of 10-20 mmol/L, Berberis vulgaris juice showed the lowest temperature dependence, whereas at higher concentrations (25 and 30 mmol/L) Beberis integerrima juice had the lowest temperature dependence. Conclusion: Anthocyanins from berberis species juices were found to be very susceptible to H2O2. Therefore, aseptic systems should be frequently controlled to ensure the effective removal of residual H2O2 from the food contact surfaces. Since the rate of anthocyanin degradation by H2O2 is highly dependent on temperature, cold storage of these juices is strongly recommended. Manuscript profile

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5 - Optimization of Effective Parameters in Removal of Acid Blue 25 by Fenton Process with the Aim of Reducing Iron Consumption
Sobhan Hooshmand Bita Ayati

10.30495/jest.2021.37319.4362

Background & Objective: Advanced oxidation processes (AOPs) are recognized as the most effective and capable available methods to remove and degrade different kind of dyes. Among various advanced oxidation processes, Fenton process is one of the most effective techn More

Background & Objective: Advanced oxidation processes (AOPs) are recognized as the most effective and capable available methods to remove and degrade different kind of dyes. Among various advanced oxidation processes, Fenton process is one of the most effective techniques that are used successfully to remove dyes without producing additional toxic by-products.Method: In the present study, all experiments were performed in a 500 mL rectangular plexiglass cubic reactor. The effect of different system parameters including pH, [Fe2+] to [H2O2] ratio, initial dye concentration, H2O2 concentration, stirrer velocity and temperature were examined and optimized using one- factor- at- a- time (OFAT) method.Findings: The results obtained from this study showed that Fenton process can remove 96 percent of Acid Blue 25 from aqueous solution. The optimal condition using Fenton process included initial concentration of 150 mg/l, pH= 3, molar ratio of [Fe2+]/[H2O2] = 0.3, stir. vel.= 100 rpm, temperature 43°C and 10 min contact time.Discussion and Conclusions: Fenton process is suggested as a suitable method for the removal of Acid Blue 25. Manuscript profile

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6 - The effect of "Hydrogen peroxide- Silver ion Complex" on fecal coliform content in aerated lagoon Effluent
Mohammad Khazaei Ramin Nabizadeh Kazem Naddafi Hasan Izanlou Zeinab Yavari Mehdi Asadi

An appropriate disinfectant in water and wastewater applications must have acceptable effect on different kind of micro-organisms especially in minor concentrations which should contain ignorable toxicity on human and animals and its environmental side effects must be v More

An appropriate disinfectant in water and wastewater applications must have acceptable effect on different kind of micro-organisms especially in minor concentrations which should contain ignorable toxicity on human and animals and its environmental side effects must be very low. Studies related to finding non-chlorinated disinfectants which have same effects of chlorine and not contain its adverse by-products are continued in recent years. Hydrogen peroxide solution with stabilized formulation and oligo-dynamic amounts of silver ion (trade mark: Nanosil) recently become a popular disinfectant for fruits، vegetables، surfaces، medical instruments and disinfections.  This study was based on determining removal efficiency of fecal coliforms from samples taken from Qom wastewater treatment plant effluents after exposing with hydrogen peroxide-silver ion complex. Disinfectant efficiency was studied in six concentrations. Contact time for all concentrations was one hour. Sample size was 12 and sampling was daily.  Results reveal that in concentration; 80mg/l، disinfectant achieves 2.1 logarithmic removals of fecal coliforms. In concentration; 480mg/l، fecal coliforms logarithmic removal was 5.3. In CT value 5800(mg/l). Min and more، the fecal coliforms effluent standard for surface water discharge and agriculture irrigation was achieved (Iranian environmental protection agency act). Use of hydrogen peroxide-silver ion complex as a water and wastewater disinfectant، has various benefits such as; don't remain hazardous by products، measurable residual amount an but because of its oxidation nature when contact the organic materials in wastewater and microbial harboring in suspended solids content of effluent، its application in wastewater effluent is more costly than other usual disinfectants. Manuscript profile

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7 - Investigation of Fenton Reagent Efficiency in Removal of Cetyl Trimethyl Ammonium Bromide from Synthetic Solution
Mohammad Reza Samarghandi Mansor Zarrbi

Industrial and municipal wastewaters are the main sources which contaminate  the surface water and groundwater. Application of detergent in industrial and domestic uses increases this substance in wastewater. Detergents are large organic molecules that are slightly More

Industrial and municipal wastewaters are the main sources which contaminate  the surface water and groundwater. Application of detergent in industrial and domestic uses increases this substance in wastewater. Detergents are large organic molecules that are slightly soluble in water, highly toxic, responsible for foaming in wastewater treatment plants and making interference with wastewater treatment operations. A numorous methods yet have been applied for the removal of detergent. These methods include coagulation and flocculation, reverse osmosis, oxidation by ozone and advanced oxidation processes. This study investigates the removal of cetyl trimethyl ammonium bromide from synthetic solution by Fenton reagent as an easy and effective method. Experiments were conducted in several stages with 100 cc of synthetic sample and pH=4, 5, 10, 15 and 20 mg/L of ferrous ions, 20, 30, 40 and 50 ml/L of hydrogen perocide in a batch reactor with contact time of 20, 40 and 60 min. Results showe that, in a batch system with acidic pH (pH=4), the removal of detergent increases with the increases of contact time, ferrous ions concentration and hydrogen peroxide. Therefore, in pH= 4, contact times of 60 min, and 20 mg/L of ferrous ions, Lthe  removal efficiency increased from 54/5% to 89/5% by increase of hydrogen peroxide conventration from 20 ml/L to 50 ml/L. Finally, considering the simplicity and effectiveness of this method, it is be suggested to be used for the removal of detergent from municipal and industrial wastewaters. Manuscript profile

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8 - Epoxidation of Alkenes and Oxidation of Alcohols with Hydrogen Peroxide Catalyzed by a Fe (Br8TPPS) Supported on Amberlite IRA-400
Shahla Masoudian Parvaneh Pakravan

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9 - Spectrophotometric quantification of hydrogen peroxide utilizing silver nanozyme
Saeed Reza Hormozi Jangi Zahra Dehghani

In this contribution, an analytical method was developed utilizing silver nanozymes as inexpensive and high throughput nanomaterials with high peroxidase-like activity for the selective quantification of hydrogen peroxide in food samples. 3,3’,5,5’-tetrameth More

In this contribution, an analytical method was developed utilizing silver nanozymes as inexpensive and high throughput nanomaterials with high peroxidase-like activity for the selective quantification of hydrogen peroxide in food samples. 3,3’,5,5’-tetramethylbenzidine (TMB) was utilized as peroxidase substrate to produce the blue-colored analytical probe. The method was constructed based on the spectrophotometric probing the oxidation product of TMB by hydrogen peroxide in the presence of silver nanozyme as catalyst and the absorbance of the blue-colored oxidation product at 658 nm was used as analytical signal. The effective parameters on the method sensitivity including nanozyme amount, incubation time, buffer type and concentration, pH, and substrate concentration were optimized. In optimal experimental conditions, a linear dynamic range of 1-80 μM and detection limit as low as 0.12 μM were obtained. Besides, the selectivity studies revealed that the absorbance at 658 nm was increased in the presence of hydrogen peroxide while other co-existing species cannot proceed the oxidation process. Finally, the designed method was applied to quantify hydrogen peroxide of milk samples, revealing highly accurate results. The results of this research can be potentially utilized for food safety verification in food industries. Manuscript profile

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10 - Evaluation Effect of Copper Sulphate and Manganese on Yield and Chemical Markers of Maize under Water Deficit Condition
Mohamad Reza Dadnia Reza Mori Sharyani

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11 - Morpho- Physiological Changes of Hempseed (Cannabis sativa L.) Traits as Affected by Seed Priming with Folic Acid and Hydrogen Peroxide
Shirin Karbalaye Golizadeh Touraj Mir Mahmoodi Nabi Khalili Aqdam

To evaluate the effects of seed priming of hempseed with folic acid and hydrogen peroxide on some morphological and physiological traits a factorial greenhouse experiment based on randomized complete design with four replications was conducted at Islamic Azad University More

To evaluate the effects of seed priming of hempseed with folic acid and hydrogen peroxide on some morphological and physiological traits a factorial greenhouse experiment based on randomized complete design with four replications was conducted at Islamic Azad University, Mahabad Branch. Treatments consisted of hydrogen peroxide at five levels (0, 7.5, 15, 22.5, 30 mm/liter) as the first factor and the four leveld of folic acid (5, 10, 20, 27 mm/liter) as the second factor.Seeds, to be primed, were immersed into solution of folic acid for 24 hours and hydrogen peroxide for 6 hours. The characteristics like chlorophyll a, chlorophyll b, total chlorophyll content, relative water content, plant height, root length, allometric coefficient, plant fresh and dry weights, were measured. Result of analysis of variance showed that the effects of folic acid and hydrogen peroxide on all characters were significant, but the interaction between the two treatments were only significant on relative water content and allometric coefficient. In this study, seed priming with 15 mm/liter of hydrogen peroxide and 5mm folic acid resulted in highest chlorophyll a, chlorophyll b, total chlorophyll contents, plant height, root length, fresh and dry weights. Increasing hydrogen peroxide level above 15mm/liter affected traits negatively. Combinated treatments of 15 mm/liter of hydrogen peroxide and 5 and 10 mm of folic acid resulted in highest relative water content and allometric coefficient, respectively. Based on the results obtained it can be concluded that priming seeds with 15 mm/liter of hydrogen peroxide and 5mm folic acid is recommended to produce proper morphological and physiological traits. Manuscript profile

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12 - Changes of antioxidative systems in various color leaves of Japanese spindle (Euonymus japonicus Thunb.)
Nader Chaparzadeh Samane Safikhani Laila Zarandi-Miandoab

Some physiological parameters and antioxidant responses were investigated in different color leaves of the evergreen shrub Japanese spindle (Euonymus japonica Thunb.). The shrub has leaves with three colors including dark green, light green, and yellow. Oxidative stress More

Some physiological parameters and antioxidant responses were investigated in different color leaves of the evergreen shrub Japanese spindle (Euonymus japonica Thunb.). The shrub has leaves with three colors including dark green, light green, and yellow. Oxidative stress markers (hydrogen peroxide concentration, cell membrane stability, and lipids peroxidation), activity of peroxidase and some antioxidant molecules (phenolic compounds, proline, and free amino acids) were studied. Significant differences were found in hydrogen peroxide content, cell membrane stability, and membrane lipids peroxidation among leaves. In yellow leaves, the total content of proline and free amino acids were higher than those of the dark green and light green leaves. The highest and lowest free phenolic compounds contents were found in the dark green and yellow leaves, respectively. The POD activity increased significantly with changing leaf color from dark green to light green and to yellow. As a result, despite the activity of the antioxidant systems, the color change from dark green to yellow caused a gradual increase in the oxidative damage. Manuscript profile

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13 - Effect of nano-TiO2 and salicylic acid foliar application on some physiological traits of Echinaceae purpurea L. under water deficit stress
Asiyeh Omid-Haghi Ebrahim Khalilvand Behrouzyar Farhad Farahvash Mehrdad Yarnia Abdollah Hasanzadeh

In order to investigate the effect of drought stress and nano-TiO2 and salicylic acid foliar application on some physiological traits of Echinaceae purpurea under water, an experiment was conducted in split plot factorial based on RCBD in three replications at the Resea More

In order to investigate the effect of drought stress and nano-TiO2 and salicylic acid foliar application on some physiological traits of Echinaceae purpurea under water, an experiment was conducted in split plot factorial based on RCBD in three replications at the Research Station of the Islamic Azad University, Tabriz Branch, during growing seasons of 2017-2018. The main factors were water deficit stress at three levels of 50, 75, and 100% filed capacity, thefactorial combination of nano-TiO2 (n-TiO2) foliar application at two levels (0.02 and 0.04%) and salicylic acid foliar application at two levels (0.02 and 0.04%), and also distilled water foliar application as control treatment. Findingsshowed a significant effect of water deficit stress on relative water content (RWC) and proline (p≤0.01). Also, interaction of the effects of water deficit stress and nano-TiO2 and salicylic acid foliar application on Chl. b, total Chl., and hydrogen peroxide contents was significant (p≤0.01). Application of water deficit stress treatment up to 50% FC increased proline content by 40% and reduced RWC by 10% compared to complete irrigation (100% FC). Furthermore, 0.04% n-TiO2 and 0.04% SA foliar application increased hydrogen peroxide content by 50% compared to complete irrigation group and the control. The maximum total Chl. Contents of leaves was obtained under 100% FC irrigation and and 0.04% n-TiO2 and 0.02% SA foliar application showing 79.52% increase compared to 100% FC irrigation and no foliar application. Manuscript profile

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14 - Yield of different wheat (Triticum aestivum L.) cultivars under application of different fertilizer sources in dryland farming
Rahim Naseri Amir Mirzaei Abas Soleymanifard

In order to investigate the effect of growth-promoting bacteria on physiologic traitsof new dryland wheat cultivars, a factorial field experiment was carried out in a randomized complete block design with three replications on the farms of Sarablah Agricultural Research More

In order to investigate the effect of growth-promoting bacteria on physiologic traitsof new dryland wheat cultivars, a factorial field experiment was carried out in a randomized complete block design with three replications on the farms of Sarablah Agricultural Research Center in the cropping season during 2019-2020. Experimental treatments included different wheat cultivars (Sardari, Karim, Koohdasht, and Rijaw) and different fertilizer sources including control (without fertilizer source), 50% N fertilizer, Azospirillum+50% N fertilizer, Azetobacter + 50% N fertilizer, Azospirillum + Azetobacter+50% N fertilizer, and 100% N fertilizer. The results of this experiment showed that the interaction effect of cultivar × fertilizer sources had a significant effect on the activity of some antioxidant enzymes and physiological properties. Rijaw cultivar × Azospirillum + Azetobacter+ 50% N fertilizer increased the activities of ascorbate peroxidase (80.9%), glutathione peroxidase (80%), catalase (71.7%), peroxidase (74.1%), superoxide dismutase (74%), carotenoids (72.1%), chlorophyll a (86.1%), chlorophyll b (88.2%), and relative water content (45.4%) while reduced the amount of Malondialdehyde (65.9%) and hydrogen peroxide (91.8%). Moreover, Sardari cultivar × control treatment (without fertilizer sources) had the lowest activities of ascorbate peroxidase, peroxidase, superoxide dismutase, and photosynthetic pigments. Therefore, according to the results of the study, wheat cultivar Rijaw × Azospirillum + Azetobacter+ 50% N fertilizer may be recommended for cultivation in dryland conditions considering the improved physiological characteristics and ultimately increased plant growth. Manuscript profile

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15 - Effects of cycocel and micronutrients on yield, physiological traits, and antioxidant activity of maize (Zea mayz L.) in low irrigation conditions at the end of the season
Seyed Nouradin Ghaffari Alireza Shokuhfar Mani Mojaddam Shahram Lack Aziz Afarinesh

10.30495/iper.2022.1944250.1746

In order to investigate the effect of cycocel and micronutrient consumption on yield, physiological traits, and antioxidant content of maize under low irrigation conditions at the end of the season, a split factorial experiment was carried out based on a randomized comp More

In order to investigate the effect of cycocel and micronutrient consumption on yield, physiological traits, and antioxidant content of maize under low irrigation conditions at the end of the season, a split factorial experiment was carried out based on a randomized complete block design with four replications in Safiabad Agriculture Research Center in Dezful during two cropping years 2017-18 and 2018-19. The main treatment included water stress with three levels control (without water stress), water stress in female flower formation stage and water stress in grain swelling stage. Also, foliar application of cycocel at three levels of control (no use of cycocel), 442.5 ppm, and 885 ppm and three levels of micronutrient fertilizers, namely control (no fertilizer application), foliar application of 1000 g. ha-1, and foliar application of 1500 g. ha-1 were considered as the sub-factors. Results of the combined ANOVA showed that the interaction of the effects of year, stress, micronutrient, and cycocel on relative water content, proline and grain yield and also the interaction of the effects of stress, micronutrient, and cycocel on hydrogen peroxide, glutathione peroxidase, and soluble proteins were statistically significant (p≤0.01). The results also showed that the highest activity of superoxide dismutase enzyme was obtained under stress conditions at the grain swelling stage, which showed an increase by about 37% compared to the irrigation treatment under optimal conditions. Foliar application of 1500 g. ha-1 micronutrient and 885 ppm cycocel in non-stress conditions increased the average grain yield (11500 kg. ha-1) in the second year by about 85% compared to stressed condition at grain swelling stage and no application of micronutrient and cycocel. In general, to increase grain yield under optimal irrigation conditions and reduce the drop in stress conditions, growth regulators such as cycocel with a concentration of 885 ppm and micronutrient foliar application at 1500 g. ha-1 are recommended. Manuscript profile

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16 - Response of genotypes of Foeniculum vulgare Mill. to salicylic acid priming under salinity stress
Sanaz Adalatzadeh-Aghdam Mahmoud Toorchi Mahmoud Zarei

10.30495/iper.2022.690255

The current study agreenhouse research was designed to evaluate the reaction of fennel (Foeniculum vulgare Mill.) genotypes to salt stress (NaCl salinity) and Salicylic acid, to study of the proteome profile of leaves for identifying molecular pathway involved in salt s More

The current study agreenhouse research was designed to evaluate the reaction of fennel (Foeniculum vulgare Mill.) genotypes to salt stress (NaCl salinity) and Salicylic acid, to study of the proteome profile of leaves for identifying molecular pathway involved in salt stress tolerance. The study was designed as factorial experiment using a randomized complete block design in three replications. Treatments are included NaCl solutions at three levels (0, 100, 200 mM) as salinity stress, Salicylic acid at two levels (0, 0/5 mM) and five genotypes. Agronomic and physiochemical traits were included: fresh and dry weight of ariel plant and roots, plant height, root length, fresh and dry weight of total plant, chlorophyll a, b and carotenoids, total chlorophyll, Na+ and K+ content, K+/Na+ ratio, malondialdehyde (MDA), Hydrogen peroxide (H2O2) and Total soluble carbohydrate (TSC) of leaves. The analysis of variance revealed significant differences for main and interaction effects in examined traits. German and Moghan genotypes were expressed as the most tolerant and sensitive genotypes based on Arunachalam method, respectively. Manuscript profile

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17 - Prevalence of hydrogen peroxide contamination in sterilized milk samples distributed in Isfahan market
مریم میرلوحی محمد باقر ملجئی آذین پور خلیلی

Introduction: Hydrogen peroxide is commonly used as disinfectant for sterilization of food contact materials. In dairy industry, contamination of milk with H2O2 residue is likely due to its leakage from the disinfected surfaces resulting in development of oxidative spoi More

Introduction: Hydrogen peroxide is commonly used as disinfectant for sterilization of food contact materials. In dairy industry, contamination of milk with H2O2 residue is likely due to its leakage from the disinfected surfaces resulting in development of oxidative spoilage of milk. Since no report has been documented on the prevalence of such contamination in food stuff in Iran, this study aimed to measure the prevalence of H2O2 in sterilized milk samples, collected from Isfahan market in 2013. Methods: A total of 20 tetra-pack sterilized milk samples from 7 different brand were randomly collected from the market. All the samples were 250ml in volume. In order to measure the H2O2 concentration a colometric method was adapted based on catalase reaction and measurement of light absorption at 400nm. Results: H2O2 residue was detected in all tested samples ranging from 0.14-1.62 ppm. Fifteen samples (75%) contained H2O2 levels greater than its regulated level by international organization (0.5 ppm). Accordingly, the results of one-sample t-test showed that the average amount of detected H2O2 concentration in the tested sample is higher than the standard value. Conclusion: Regarding the H2O2 contamination of the tested milk samples revealed in this study and due to lack of any regulation limit for H2O2 in sterilized milk in Iran, presentation and documentation of standards introducing reliable method for detection and monitoring of H2O2 in the sterilized milk along with its limits is highly recommended. Manuscript profile

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18 - اثرات آنتی بیوتیکی و آنتی اکسیدانی عصاره متانولی برگ گیاه Momordica charantia بر فشار خون ناشی از آلوکسان در موش صحرایی
ساندی افوگ الوفکه فلایی بلسین اگونپلو آدمولا اویابمی تمیدایو اوموبوال مومو یکوبو اولووافمی اوگونتیبجو آدلو آدداپو

Background & Aim:The plant Momordica charantia is highly valuable having a wide range of medicinal uses with tropical and subtropical regions distribution. This study was conducted to appraise the medicative properties of methanol leaf extract of Momo More

Background & Aim:The plant Momordica charantia is highly valuable having a wide range of medicinal uses with tropical and subtropical regions distribution. This study was conducted to appraise the medicative properties of methanol leaf extract of Momordica charantia (MEMC) on alloxan-induced diabetic rats. Experimental: The antidiabetic influence of methanol leaf extract of Momordica charantia (MEMC) was investigated in alloxan-induced diabetes in rats. 50 rats allocated into five groups (A-E) (n =10) were utilized in this study: group A was normal control, groups B to E were induced with alloxan with diabetes established, while group B was not treated, group C received glibenclamide treatment while groups D and E were administered extracts at 200 and 400 mg/kg doses, respectively, in a study that continued for 28 days. Changes in blood glucose levels, body weight, haematology, serum chemistry, antioxidant system and histopathology changes were evaluated. Results: MEMC elicited significant drop in blood glucose level from diabetic to near normal level, restoring the body weight, haematological and serum biochemical parameters to the basal non diabetic level; likewise the MEMC-treated group elicited a decreased level of oxidant markers such as malondialdehyde (MDA) and hydrogen peroxide (H2O2) but increased concentration of protein thiols (PT), non-protein thiols (NPT), glutathione (GSH), glutathione peroxidase (GPx), glutathione-S-transferase (GST) and superoxide dismutase (SOD) indicating its anti-oxidant potential. The pancreas section also revealed repair of distorted pancreatic architecture in MEMC-treated group compared to diabetic group. Recommended applications/industries: The plant exhibited anti-hyperglycaemic, anti-diabetic and anti-oxidant abilities hence could be explored for the treatment of diabetes mellitus. Manuscript profile

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19 - Alkanedisulfamic acid functionalized silica-coated magnetic nanoparticles as a reusable efficient nanocatalyst for synthesis of gem-dihydroperoxides and 1,2,4,5-tetraoxanes
Kaveh Khosravi Ali Reza Karimi Shirin Naserifar

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20 - Oxidative desulfurization of light fuel oil by using hydrogen peroxide in the presence of acetic acid catalyst
Neda Ghaeli Mohammad Hassan Vakili

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21 - Urea-hydrogen peroxide/silica phosphoric acid-catalyzed oxidation- condensation Tandem reaction: One-pot synthesis of 2-substituted benzimidazoles from alcohols
Ahmad Reza Momeni Heshmat Allah Samimi Reyhaneh Jahanian

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22 - Thermodynamic study of an effective catalytic system, hydrogen peroxide and methyltrioxorhenium
Fatemeh Niroomand Hosseini

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23 - Nanoparticles induced antioxidative compounds in Matricaria chamomilla
Delaram Torabzadeh Halimeh Hassanpour Jinous Asgarpanah Maryam Rezayian

10.30495/ijpp.2019.668861

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24 - Sodium nitroprusside and salicylic acid decrease antioxidant enzymes activity in soybean
Leila Aalam Mohammad Sedghi Omid Sofalian

10.30495/ijpp.2019.670792

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25 - The Role of signaling of hydrogen peroxide and 24-epibrassinosteroid on physiological traits of cumin (Cuminum cyminum L.) under drought stress
Nasim Roudbari Hosein Abbaspour Khosrow Kalantari Ahmad Aien

10.30495/ijpp.2020.1893417.1204

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26 - Hydrogen peroxide promotes metabolic changes and alleviates effects of static magnetic field on tobacco cells
Faezeh Ghanati Farzaneh Mohammadi Mohsen Sharifi Mohammad Pormehr Abazar Hajnorouzi Atefeh Payez

10.30495/ijpp.2021.1935207.1342

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27 - تاثیر محلول‌های گلجایی حاوی کبالت، سریم و نانوذرات نقره بر ماندگاری و کیفیت پس از برداشت گل های شاخه بریده پرنده بهشتی (Strelitzia reginae)
جهانگیر آذرهوش داود هاشم آبادی لیلا اسدپور بهزاد کاویانی

به منظور افزایش کیفیت و ماندگاری پس از برداشت گل های شاخه بریده پرنده بهشتی آزمایشی در قالب طرح کاملا تصادفی با 10 تیمار در سه تکرار انجام شد.  تیمارهای آزمایشی شامل کلرید کبالت (250 و 500 می لیگرم در لیتر)، نیترات سریم (100، 300 و 600 میکرومولار)، ن More

به منظور افزایش کیفیت و ماندگاری پس از برداشت گل های شاخه بریده پرنده بهشتی آزمایشی در قالب طرح کاملا تصادفی با 10 تیمار در سه تکرار انجام شد.  تیمارهای آزمایشی شامل کلرید کبالت (250 و 500 می لیگرم در لیتر)، نیترات سریم (100، 300 و 600 میکرومولار)، نانوسیلور (20 و 40 میلی گرم در لیتر) و نانوسیل (2000 و 4000 میکرومولار) بودند که بصورت پالس 24 ساعته استفاده شدند. از آب مقطر به عنوان تیمار شاهد استفاده شد. نتایج نشان داد که بیشترین عمرگلجایی با کاربرد 300 میکرومولار نیترات سریم (11.68 روز)  بدست می آید که از نظر آماری با تیمارهای 100 و 600 میکرومولار نیترات سریم، 500 میلی گرم در لیتر کلریدکبالت و 20 میلی گرم در لیتر نانوسیلور تفاوت معنی داری نداشت. دو تیمار 300 و 600 میلی مولار نیترات سریم در افزایش جذب آب و ماده خشک، حفظ وزن تر، کاهش باکتری انتهای ساقه و محلول گلجایی بهترین تیمار بودند. کمترین تجمع مالون دی آلدهید (0.09 نانومول در هر گرم وزن تر) و بیشترین فعالیت آنزیم های پراکسیداز (0.147 نانومول در هر گرم وزن تر) و کاتالاز  (1.02 نانومول در هر گرم وزن تر) با کاربرد 300 میکرومولار نیترات سریم در محلول گلجایی بدست آمد. بیشترین فلاوونوئید کاسبرگ (0.493 درصد) متعلق به تیمار 2000 میکرومولار نانوسیل بود. بیشترین کاهش وزن تر و کمترین مقادیر سایر صفات ارزیابی شده متعلق به تیمار شاهد بود. با توجه به نتایج حاصل، محلول گلجایی حاوی 300 میکرومولار نیترات سریم و 3 درصد ساکارز جهت حفظ کیفیت و افزایش ماندگاری پس از برداشت گل های شاخه بریده پرنده بهشتی توصیه می شود. Manuscript profile

Open Access Article

28 - تاثیر محلول‌پاشی سیلیکون بر واکنش‌های فیزیولوژیکی داوودی (Dendranthema ×grandiflorum) در دو مرحله رشد مختلف
هادی حاجی زاده زهره جبارزاده

 این پژوهش برای ارزیابی واکنش های فیزیولوژیکی داوودی به محلولپاشی سیلیکون در شرایط بدون تنش انجام شد. این پژوهش به صورت دو آزمایش جداگانه (در مرحله 5-4 برگی و 12-8 برگی) به صورت فاکتوریل در قالب طرح کاملا تصادفی با دو فاکتور نوع سیلیکون (در دو نوع: سیلیکات سدیم و س More

 این پژوهش برای ارزیابی واکنش های فیزیولوژیکی داوودی به محلولپاشی سیلیکون در شرایط بدون تنش انجام شد. این پژوهش به صورت دو آزمایش جداگانه (در مرحله 5-4 برگی و 12-8 برگی) به صورت فاکتوریل در قالب طرح کاملا تصادفی با دو فاکتور نوع سیلیکون (در دو نوع: سیلیکات سدیم و سیلیکات کلسیم) و غلظت سیلیکون (در 5 غلظت صفر، 50، 100، 150 و 200 میلی گرم در لیتر) در محیط کشت کوکوپیت- پرلیت (به نسبت حجمی 1:1) با 4 تکرار و 2 مشاهده انجام شد. ویژگی های فیزیولوژیکی نظیر فعالیت آنزیم های کاتالاز، آسکوربات پراکسیداز، گایاکول پراکسیداز، میزان پرولین، مالون دی آلدئید و پراکسید هیدروژن اندازه گیری شدند. نتایج این پژوهش نشان داد که محلولپاشی با سیلیکات سدیم و کلسیم، میزان مالون دی آلدئید و فعالیت آنزیم های کاتالاز، آسکوربات پراکسیداز و گایاکول پراکسیداز را افزایش داد ولی پرولین و پراکسید هیدوژن کاهش یافتند. در کل، در مرحله 12-8 برگی، غلظت های زیاد سیلیکات سدیم (150 و 200 میلی گرم در لیتر) در افزایش فعالیت آنزیم های آنتی اکسیدانی و کاهش میزان پرولین، مالون دی آلدئید و پراکسید هیدروژن موثرتر بود. در مرحله 5-4 برگی، سیلیکات سدیم با غلظت 100 میلی گرم در لیتر، فعالیت آنزیم‌های آنتی اکسیدانی را افزایش داد و سیلیکات کلسیم با غلظت 150 میلی گرم در لیتر، میزان پرولین، مالون دی آلدئید و پراکسید هیدروژن را کاهش داد.  Manuscript profile

Open Access Article

29 - Effect of seed priming with hydrogen peroxide on reducing the effects of saline water on bread wheat lands (Triticum aestivum L.)
Zahra Albaji Seyed Keyvan Marashi

10.2./jpps.2022.700299

This research was performed as a factorial in a completely randomized design in a pot with four replications. The studied treatments include salinity of irrigation water as irrigation with ordinary water (0.4) (control) and with salinity of 4 and 8 dS/m and seed priming More

This research was performed as a factorial in a completely randomized design in a pot with four replications. The studied treatments include salinity of irrigation water as irrigation with ordinary water (0.4) (control) and with salinity of 4 and 8 dS/m and seed priming including no priming and seed priming in 25 and 50 mM of hydrogen peroxide solutions. In this experiment, the number of spikes per pot, number of spikelets per spike, number of seeds per spikelet, 1000-grain weight, root dry weight, grain yield and grain protein were investigated. In this study, the effect of salinity of irrigation and hydrogen peroxide on all studied traits were significant. The interaction effect of salinity of irrigation and hydrogen peroxide on the studied traits except grain number per spikelet and grain protein were significant. The maximum root dry matter (0.95 g/pot) and grain yield (7.49 g/pot) were observed under irrigation with normal water and application of 50 mM hydrogen peroxide and the minimum root dry matter (0.82 g/pot) and grain yield (3.17 g/pot) was obtained at salinity of 8 dS/m and non-application of hydrogen peroxide. The maximum grain protein (14.25%) was obtained in the application of 50 mM hydrogen peroxide and the minimum protein percentage (11.05%) was obtained under irrigation with normal water. In general, the application of hydrogen peroxide can be effective in increasing the quantitative and qualitative yield of wheat and reducing the effect of salinity of irrigation water and it can be considered and recommended by researchers and farmers. Manuscript profile

Open Access Article

30 - Study of defense mechanism of microalgae Haematococcus pluvialis infected by Paraphysoderma sedebokerensis
Bahareh Nahidian Faezeh Ghanati Maryam Shahbazi neda Soltani Morteza Gholami

In the present study, the first early physiological responses of the green micro algae Haematococcus pluvialis during infection by chytrid Paraphysoderma sedebokerensis was studied. To this end, the palmeloid form of Haematococcus pluvialis was cultivated for two days i More

In the present study, the first early physiological responses of the green micro algae Haematococcus pluvialis during infection by chytrid Paraphysoderma sedebokerensis was studied. To this end, the palmeloid form of Haematococcus pluvialis was cultivated for two days in three media including the medium infected with chytrid (chyt) and the culture of chytrid infected (IBS) and uncontaminated (HBS) cells. Then, the activity of antioxidant enzymes, extracellular peroxide, and free intracellular enzymes were determined by UV/Vis spectrophotometry and HPLC techniques. The activity of superoxide dismutase, catalase, and peroxidase in the chytrid infected cells after 24, 24, and 48 h was 2.3, 6.7, and 2.6 times higher those of control. These values for the cells cultivated with the infected media after 12, 12, and 36 h was found to be 2.1, 2.5, and 2.6 times higher than control. The extracellular peroxide content in the algae cultivated with the contaminated media was nearly constant and about 4 fold of the other specimens; while those of chytrid infected cells was slightly increased from 1.3 to 1.8 μM during 48 h cultivation. Amino acids histidine, alanine, asparagine, aspatic acid, arginine, and methionine were of the highest and the phenylalanine and tryptophan were of the lowest content. These results can be attributed to the cells defense response to chytrid infection thorough enhancement of peroxide content and activation of antioxidative pathways. Manuscript profile

Open Access Article

31 - Optimizing oxidative desulfurization of diesel of Tehran Refinery using acid catalysts in the presence of hydrogen peroxide
mahsa khorshidnia Amir Farshi Manocher Bahmaei

10.30495/jacr.2023.1968690.2062

In this research, desulfurization of diesel from Tehran Refinery was investigated by oxidation method. To investigate this process, the performance of different advanced oxidation systems (acetic acid/hydrogen peroxide, formic acid/hydrogen peroxide) along with acetonit More

In this research, desulfurization of diesel from Tehran Refinery was investigated by oxidation method. To investigate this process, the performance of different advanced oxidation systems (acetic acid/hydrogen peroxide, formic acid/hydrogen peroxide) along with acetonitrile extraction were investigated for desulfurization of diesel fuel with 13370 ppm primary sulfur in a discontinuous reactor. The effect of different operating factors such as molar ratio of acid to sulfur (nacid/ns) (15, 20, and 25), molar ratio of hydrogen peroxide (oxidant) to sulfur (no/ns) (5, 10, and 15), temperature and also reaction time were investigated. Many tests showed that in the optimal conditions for removing sulfur from gas oil with the acetic acid/hydrogen peroxide system, the amount of sulfur reached to 9130 ppm with an efficiency of 31%, and with the formic acid/hydrogen peroxide system, the amount of sulfur reached to 2500 ppm with an efficiency of 81%. Also, the examination of the experiments confirmed this point that it is not possible to completely remove the sulfur from heavy oil fractions such as diesel with normal oxidative desulfurization methods. Manuscript profile

Open Access Article

32 - Effect of hydrogen peroxide based on silver colloid on decapsulation of Urmia Lake Artemia cysts (Artemia urmiana) to achieve the best hatching rate
R. Mosavi Nodoushan S. Farahnak

This study aimed to determine the most appropriate dose of hydrogen peroxide based on silver colloid for the decapsulation of Urmia Lake Artemia cysts (Artemia urmiana), to achieve the best hatching rate.  The cysts were exposed to doses of 0.5, 0.75, 1, 2 and 5% o More

This study aimed to determine the most appropriate dose of hydrogen peroxide based on silver colloid for the decapsulation of Urmia Lake Artemia cysts (Artemia urmiana), to achieve the best hatching rate.  The cysts were exposed to doses of 0.5, 0.75, 1, 2 and 5% of hydrogen peroxide based on colloidal silver for 30 seconds, 45 seconds, 1, 2 and 5 minutes and 5 ml bleach and pure water (as control) were used to compare the process of decapsulation with the test solutions. After decapsulation, 1 gram of cysts per liter were hatchedat 30 ° C for 48 hours under conditions of 35 ppt salinity. After 48 hours of incubation, 99% hatching rate at a dose of 0.5 % solution of hydrogen based on colloid silver, 97% in bleach solution and 94 % in the control cysts was observed. According to the results of the statistical analysis, ANOVA, significant difference was found between the results of test treatments. The results of this study suggest that, best performance of hatching rate in Artemia urmiana cysts can be achieved, by putting the cysts in a solution with a dose of 0.5% of hydrogen peroxide based on silver colloid.  Manuscript profile

Open Access Article

33 - The Effects of IBA and H2O2 on Rooting of 2 Olive Cultivars
E. Asl moshtaghi A.R. Shahsavar

10.22034/jchr.2011.543971

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Open Access Article

34 - Effect of Hydrogen Peroxide Concentration in Remediation of Oil-contaminated Soils with Use of Fenton Reaction
A. S. Yousefi A. Bostani

10.22034/jchr.2018.544013

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Open Access Article

35 - Effect of cold stress on chlorophyll content, chlorophyll fluorescence and activity of oxidative enzymes of barley cultivars (Hordeum vulgare L.)
Ali Bashirzadeh Khanlar Dayyan Abdullayev Zaman Mahmudov

Cold is one of the most important abiotic stresses that limits crop growth and yield worldwide. In order to investigate how 20-day-old barley seedlings adapt to short-term cold stress, the present study was carried out in a factorial experiment with four replications in More

Cold is one of the most important abiotic stresses that limits crop growth and yield worldwide. In order to investigate how 20-day-old barley seedlings adapt to short-term cold stress, the present study was carried out in a factorial experiment with four replications in the seed laboratory of Karaj Seedling and Seed Breeding Research Institute. The experimental factors included barley cultivars (cold-sensitive Karon, semi-cold-tolerant Fasih, and cold-tolerant Makoi) and cold stress with three levels of 4, 8, and 22 oC (control). Temperature treatments were applied to barley seedlings for 48 hours. The results of analysis of variance showed that the interaction of cold and cultivar was significant on most of the measured traits in this study. The mean comparison also showed that the highest value of F0 was observed in Karun and Fasih cultivars at 8 oC and in Makoi cultivar at 4 oC, while in all three cultivars, Fv value and chlorophyll a content decreased with decreasing temperature. The ratio of Fm/Fv in Makoui and Fasih cultivars decreased with decreasing temperature, however no significant change was observed in Karon cultivar. In addition, with decreasing temperature, malondialdehyd (MDA) and H2O2 concentration and peroxidase (POX) activity increased in all three cultivars, especially Karon cultivar, but catalase (CAT) and super oxid dismutase (SOD) activity were not affected by the cultivar, and the highest CAT and SOD activity were obtained at 8 and 4 oC, respectively. The obtained results showed that the cultivars more tolerant than the sensitive cultivar (Karon) at low temperatures by limiting the production of compounds such as H2O2 and MDA, had higher chlorophyll content and photosynthetic efficiency, which probably reflects greater adaptation to cold. Manuscript profile

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