List of Articles brown algae

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  1 - Optimization of Ultrasound-Assisted Extraction Conditions for Pigment Compounds of the Brown Algae Sargassum angustifolium Using Response Surface Methodology
  Niloofar Aghajanpoor Sourkohi Aria Babakhani
  10.30495/fh.2024.74788.1148
  In this study, the extraction of S. angustifolium brown alga pigments was investigated by ultrasound to identify process variables and optimize the extraction conditions. Experimental design using central composite design (CCD) with four independent variables including More

  In this study, the extraction of S. angustifolium brown alga pigments was investigated by ultrasound to identify process variables and optimize the extraction conditions. Experimental design using central composite design (CCD) with four independent variables including the percentage of ethanol concentration (at three levels of 50, 75 and 100%), extraction time (at three levels of 10, 20 and 30 minutes), solid-liquid ratio (at three levels 1: 5, 1:10 and 1:15) and the power of ultrasound (at three levels 80, 240 and 400 watts) was performed for the responses of chlorophyll a, total chlorophyll, total carotenoids and fucoxanthin. The results showed that the highest amount of total fucoxanthin and carotenoids was obtained in 75% ethanol, duration 20 minutes, solid-liquid ratio 1:5 and ultrasonic power of 240 watts. In the mentioned optimal conditions, fucoxanthin and total carotenoids were 0.42 and 1.11 mg/g, respectively. The values obtained in the experiment have a logical relationship with the values predicted by the software, which indicates the appropriateness of the models used. Manuscript profile
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  2 - Experimental study of ethanolic extract of brown algae Nizimuddinia zanardinii on liver histopathological injury induced by bile duct ligation inrats
  مدارا Nasiri , M Ale-Ebrahim , R Hajikhani , P Mortazavi
  liver fibrosis has been recognized as a cause of morbidity and mortality in humans. The oxidative stress in cholestatic­liver disease serves as a link between hepatic injury and liver­fibrosis. Therefore, any agent that has the capacity of normalizing the oxidat More

  liver fibrosis has been recognized as a cause of morbidity and mortality in humans. The oxidative stress in cholestatic­liver disease serves as a link between hepatic injury and liver­fibrosis. Therefore, any agent that has the capacity of normalizing the oxidative damage, would be able to decrease fibrosis in a cholestatic liver. The brown Algae Nizimuddiniazanardiniiis one of the natural resources in the marine ecosystem which contains biologically active­compoundsand it's anti-inflammatory, anti-cancer, anti-fungal and antioxidant effects are known.The aim of the present study was the evaluation of the effect of ethanolic­extract of brown­algaeNizimuddiniazanardinii on liver­fibrosis induced by bile­duct­ligation (BDL) in male­rats. 54 male rats were randomly classified in nine groups (n=6): control group (intact rats), sham group (laparatomy without BDL),Nizimuddinia extract control groups (50,­100 or 200­mg/kg). BDL group, experimental treatment groups (BDL rats+­50,­100 or 200­mg/kg Nizimuddinia). BDL increased the serum­levels of aspartate­aminotransferase, alanine­aminotransferase, alkaline­phosphatase, total­bilirubin, cholesterol and triglyceride, whereas it reduced the levels of antioxidant­enzymes, superoxide­dismutase and catalase in the liver and also reduced the serumic levels of albumin and total protein. Treatment of BDL rats with Nizimuddiniazanardiniiextract attenuated these changes. As determined by Masson’s trichrome staining, BDL markedly induced the liver­fibrosis. These alterations were also significantly attenuated by Nizimuddiniazanardiniiadministration.  The results of this study indicate the hepatoprotective and antifibrotic effect of Nizimuddinia­zanardiniiin the cholestatic liver. The antifibrotic effect of this brown algea likely due to the antioxidative and free­radical scavenging effects of it. Manuscript profile
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  3 - Cesium biosorption from aqueous solutions using Sargasum modified algae, equilibrium and kinetics
  H. Taherzadeh M. آ. Khani
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  4 - Changes of chemical composition of brown algae Padina boergesenii collected from Qeshm coastal zone
  Sh. Safaeian M.H. Givianrad Sh. Farzadmanesh
  In this study chemical composition (ash, protein, fiber, fat and carbohydrates) and mineral contents (Na, Ca, K, Fe, Mn, Mg, Zn, Cu, Co, Se and P) of Padina boergesenii collected from the Persian Gulf in the winter of 1389 and spring of 1390 have studied. Results indica More

  In this study chemical composition (ash, protein, fiber, fat and carbohydrates) and mineral contents (Na, Ca, K, Fe, Mn, Mg, Zn, Cu, Co, Se and P) of Padina boergesenii collected from the Persian Gulf in the winter of 1389 and spring of 1390 have studied. Results indicate that the nutritional value of brown algae Padina boergesenii was 114.37 kilo calories in the spring and 154.208 kilo calories in the winter. Chemical analysis of the brown alga Padina boergesenii indicated these amounts of Protein, ash, carbohydrates, fat and fiber: (%12.26 ± 0.015), (%13.28 ± 0.01), (%25.97 ± 5.634), (%0.14 ± 0.036) and (%4.67 ± 0.709) DW in the spring and (%12.63 ± 0.042), (11.14 ± 0.01), (%15.24 ± 0.649), (%0.32 ± 0.032) and (%3.8 ± 0.112) DW in the winter, respectively. Difference between the means of protein, fat, ash and carbohydrates in spring and winter is meaningful (P ≤ 0.05); difference between the means of fiber in mentioned seasons is (P ≥ 0.05). Analysis of mineral contents of brown algae Padina boergesenii indicates these amounts for Fe, Ca, Na, K, Mg, Se were (1160.333 ± 19.85), (7554 ± 29.799), (10874.74 ± 1646.958), (10594.6 ± 692.67), (5569.33 ± 11.015) and (572 ± 9) ppm in the spring respectively also these values ​​in the winter are (2265.667 ± 224.5982), (7820.93 ± 60.9008), (8728 ± 1032.42), (4612.97 ± 609.99), (6805.33 ± 154.212) and (526 ± 14.047) ppm respectively, therefore, it can be said that Potassium, Sodium and Selenium have higher amounts in the spring and difference between the means of potassium, iron, calcium, magnesium, selenium is meaningful in the brown algae Padina boergesenii (P ≤ 0.05); difference between the means of sodium is meaningless (P ≥ 0.05). Reference made to the results of this study regarding chemical and mineral composition specially Protein percentage and amounts of Selenium, Calcium, Potassium, Padina boergesenii is a recommended candidate as food supplement. Manuscript profile
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  5 - Identification and biomass of macroalgae in intertidal zone of Bushehr Province
  P. Nejatkhah Manavi F. Rafiee S. Shariat zadeh Sh. Seifi
  In this research, identification and biomass of macroalgae in Jofreh, Naftkesh, Daneshjo, Lian sights in Bushehr Province in winter 1388 (2010) at low, mid and high intertidal zone have been studied. Sampling was done randomly with 0.5 m2 quadrate. Totally 9 genera of g More

  In this research, identification and biomass of macroalgae in Jofreh, Naftkesh, Daneshjo, Lian sights in Bushehr Province in winter 1388 (2010) at low, mid and high intertidal zone have been studied. Sampling was done randomly with 0.5 m2 quadrate. Totally 9 genera of green, red and brown macro algae were recognized. Maximum and minimum biomass of algae belonged to brown and green algae with 2166/7and 687g/m2, respectively. The green algae  Codium, sp., Chaetomorpha, sp. , Chatomotpha gracilis and the red algae   Hypnea sp., Gracillaria, sp., Laurencia,sp. , Gracillara corticata, Laurencia papillosa and Laurencia obtuse , also 6 brown algae including Sargassum sp., Padina sp., Colpomenia sp. , Cystoseria sp. ,Colpomenia sinuosa and Cystoseria fimbriata, were recognized. Key words:  Manuscript profile
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  6 - The effects of organic fertilizers and cover beds on yield and some physiological traits of Calendula officinalis L. treated with brown algae extract foliar application
  lamia Vojodi Mehrabani Mohammadbagher Hasanpour Aghdam Asghar Ebrahimzadeh rana valizadeh
  This study was conducted to assay the effects of diverse levels of foliar application of brown marine algae extract (0, 150 and 300 ml) in combined with integrative treatment of organic fertilizers (control, poaltry manure, cow manure and vermicompost) and soil cover (w More

  This study was conducted to assay the effects of diverse levels of foliar application of brown marine algae extract (0, 150 and 300 ml) in combined with integrative treatment of organic fertilizers (control, poaltry manure, cow manure and vermicompost) and soil cover (white and black) on some physiological characteristics (chlorophyll content, total phenolic, flavonoids and anthocyanin contents) and growth potential of Calendula officinalis as factorial based on RCBD with three replications. The results revealed the significant interaction effects of integrative treatments (soil cover and organic fertilizer) and algal extracts foliar application on chlorophyll a content. The highest chlorophyll a content was recorded in vermicompost + 300 ml algae extract. The highest data for root (15gm-2) and stem dry weight (74/8g m-2) and for flower diameter (5/98cm) were recorded in plants treated with vermicompost + white mulch. The greatest phenolic content, flower dry weight, as well as the highest essential oil content were acquired in organic fertilizer + black mulch. The lowest data for phenolic and essential oil content was belonged to control (without algae extract) treatment. Algal extract foliar application significantly influenced the anthocyanin content at 300 ml. Finally, all treatments used in this study had positive effects on the physiological and morphological characteristics of Marigold and can be recommended to farmers. Manuscript profile
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  7 - Effects of seaweed extract Sargassumboveanum on physiological characteristics of Menthapiperita
  hanieh Hedayatifard mansoureh Khalatbari
  This research was accomplished in 2016 at greenhouse for study of different concentration effects of seaweed (Sargassum) extract on qualitative and quantitative characteristics of Menthapiperita. Present research was done in a factorial design with a completely randomiz More

  This research was accomplished in 2016 at greenhouse for study of different concentration effects of seaweed (Sargassum) extract on qualitative and quantitative characteristics of Menthapiperita. Present research was done in a factorial design with a completely randomized four replications. The main factor was different concentrations of seaweed extract with 0, 10, 20, 30 and 40 percent, while the subplot was different spray time in two period types of every 5 and 10 days. The results showed that the concentration of chlorophyll a in peppermint increased with decreasing the time of foliar application and was not significant at different concentrations of algal extract in 30 and 40% treatments on the studied traits. The effect of different concentrations of sargassum algae extract on plant minerals including nitrogen was positive at a concentration of 20% in 10 days of treatment. Therefore, in order to increase the protein and essential oil of peppermint, the concentrations of sargassum extract in this study can be used. In general, it can be concluded that the use of algae extract in the production of peppermint was not considered appropriate due to reduced growth rate and no positive effect on plant essential oil, and from concentrations of 20% or more as a herbicide can be Used.   Manuscript profile