Iranian Journal of Fisheries Sciences最新文献_第7页

Food Safety Standards and its effects on Iran's Fish Exports 食品安全标准及其对伊朗鱼类出口的影响

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-11-01 DOI: 10.22092/IJFS.2020.122935

H. Mohammadi, S. Saghaian, Milad Aminizadeh, H. Aghasafari

{"title":"Food Safety Standards and its effects on Iran's Fish Exports","authors":"H. Mohammadi, S. Saghaian, Milad Aminizadeh, H. Aghasafari","doi":"10.22092/IJFS.2020.122935","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122935","url":null,"abstract":"Food safety standards are one of the major non-tariff barriers of global trade. We investigate their effects on fish international trade patterns, especially for the developing countries. The main objective of this study is to investigate the role of mercury standards on Iran’s fish exports. We utilize the gravity model analysis based on balanced panel data model, covering eight importing countries over the 2006-2015 period. The estimated coefficient of mercury standard supports the hypothesis that fish safety standards are one of the important factors affecting fish exports. Moreover, regulation similarity between countries could increase fish trade. Other explanatory variables of geographical distance between countries, trade agreement between countries and real exchange rates also have a significant effect on fishery product exports. The results indicate that Iran’s fish exports are negatively correlated with mercury standards of importers. As a result, adapting fisheries product standards and producing with the methods to deal with mercury standard imposed by importing countries is crucial for increasing Iran’s fish exports.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"3075-3085"},"PeriodicalIF":0.9,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44889806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis of the genetic structure of the Persian sturgeon (Acipenser persicus) populations: Comparison of control region sequencing and PCR-RFLP analysis of mitochondrial DNA 波斯鲟种群遗传结构分析:对照区测序和线粒体DNA PCR-RFLP分析的比较

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-11-01 DOI: 10.22092/IJFS.2020.122963

S. Nazari, M. Pourkazemi, M. Khoshkholgh

{"title":"Analysis of the genetic structure of the Persian sturgeon (Acipenser persicus) populations: Comparison of control region sequencing and PCR-RFLP analysis of mitochondrial DNA","authors":"S. Nazari, M. Pourkazemi, M. Khoshkholgh","doi":"10.22092/IJFS.2020.122963","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122963","url":null,"abstract":"The genetic variation and population structure of the Persian sturgeon, Acipenser persicus (Borodin, 1897) was investigated by means of polymerase chain reaction (PCR) restriction fragment length polymorphism (RFLP) analysis of the nucleotide dehydrogenase subunit 5 (ND5) of mitochondrial DNA (mtDNA). We compared these data with our previous study based on mtDNA control region sequences. A total of 225 individuals were collected from 23 sample sites in the south and 4 locations in Turkmenistan, Azerbaijan, Russian Federation and Kazakhstan covering the three main geographic regions including south, middle and north part of the Caspian Sea. The PCR products were digested with 25 restriction enzymes and five enzymes revealed polymorphism patterns (Rsa І, Hinf І, HaeIII, Mbo І and Cfr13І). Thirty two composite haplotypes were revealed with the number of haplotypes in each population sample ranging from 6 to 13. Two regional (Sefidroud River and Russia) groups were clearly identified by cluster and molecular variance model (AMOVA) analyses. Each of these groups showed dominant haplotypes that were little in populations from the other geographic areas. The mean haplotype diversity (h) and nucleotide diversity (π) were 0.7610±0.046 and 0.008332±0.00421, respectively. Based on heterogeneity test and Monte-Carlo with 1000 replicates, significant differences were showed for haplotype frequencies of the Persian sturgeon populations (p <0.0001). The obtained results and also FST based on kimura- 2 parameters method showed that haplotype distribution in different location were significant (p <0.0001). Results of this study determined independent populations of Persian sturgeon and will have noticeable implications for sturgeon conservation genetics in general.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"3201-3220"},"PeriodicalIF":0.9,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41729836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Ntifungal activity and chemical composition of Iranian medicinal herbs against fish pathogenic fungus, Saprolegnia parasitica 伊朗中草药对鱼类病原菌的抑菌活性及化学成分研究

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-11-01 DOI: 10.22092/IJFS.2020.122970

M. Adel, Maryam Dadar, M. Zorriehzahra, R. Elahi, T. Stadtlander

{"title":"Ntifungal activity and chemical composition of Iranian medicinal herbs against fish pathogenic fungus, Saprolegnia parasitica","authors":"M. Adel, Maryam Dadar, M. Zorriehzahra, R. Elahi, T. Stadtlander","doi":"10.22092/IJFS.2020.122970","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122970","url":null,"abstract":"This study aimed to identify the chemical composition of essential oil of some Iranian medicinal plants and their antifungal activity against Saprolegnia parasitica in comparison to formalin as positive control under in vitro conditions. The essential oils of Eryngium campestre, Pimpinella affinis, Mentha piperita, Achillea wilhelmsii and Cuminum cyminum were analyzed for their activity by disk diffusion, Minimum Inhibitory Concentration (MIC) and Minimum Fungicidal Concentration (MFC) methods. Also, the oil constituents of investigated plants were analyzed by gas chromatography/mass spectrometry (GC/MS). The major constituent of the surveyed essential oils was bornyl acetate (17.9%) in E. campestre, Pregeijene (27.3%)in P. affinis, menthol (48.5%) in M. piperita, 1,8-cineol (25.2%) in A. wilhelmsii, and α-Pinene (29.1%)in C. cyminum. The MIC values for the surveyed essential oil were was 0.5 µg ml-1 for C. cyminum followed by M piperita and E. campestre both having 1 µg ml-1, for P. affinis 2 µg ml-1 and was 4 µg/mL for A. wilhelmsii. The MFC for the mentioned essential oil were with 0.5 µg ml-1 again lowest for C. cyminum, followed by M. piperita and E. campestre with 2 µg ml-1, for P. affinis MFC was 4 µg ml-1 while it was with 8 µg ml-1 highest for essential oils from A. wilhelmsii. The results indicate that the essential oils of C. cyminun, E. campestre and M. piperita could be potential candidates for new plant based antifungal components in aquaculture against S. parasitica.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"3239-3254"},"PeriodicalIF":0.9,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43303697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Acute responses of spotted snakehead (Channa punctata) to salinity stress: A study of a freshwater fish to salinity challenges during intrusion of saline water 斑点蛇头(Channa punctata)对盐度胁迫的急性反应:咸水入侵期间淡水鱼对盐度挑战的研究

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI: 10.22092/IJFS.2020.122590

H. Khatun, G. Mostakim, S. Islam

{"title":"Acute responses of spotted snakehead (Channa punctata) to salinity stress: A study of a freshwater fish to salinity challenges during intrusion of saline water","authors":"H. Khatun, G. Mostakim, S. Islam","doi":"10.22092/IJFS.2020.122590","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122590","url":null,"abstract":"A climate driven changes in the coastal region of Bangladesh is saltwater intrusion in freshwater, which may directly affect the fishery production as well as economy and food security. Investigation on effect of different concentration of salinities (0, 5, 10, and 15ppt) on hemato-biochemical parameters, behavioral responses and gill morphology at certain time intervals (1, 6, 12, 24, 36, 48, and 72 h) were observed in a spotted snakehead, Channa punctata. In the present study the biochemical parameter and glucose exposed a significant (p <0.05) changes associated with different exposures at different time intervals. The hematological data of C. punctata revealed significant (p <0.05) decrease in red blood cell (RBC) count. The hemoglobin level in every treatment was lower till 24 h and then it increased up to 48 h but white blood cell (WBC) count, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) showed significant (p <0.05) increase compared to the control. Increase and decrease of hematological indices expressed that fish exposure to different salinities were under stress. Unusual behavioral responses with various pathological signs in gills were also perceived. The results specified that the intrusion of saline water into the freshwater have deleterious effects on the hemato-biochemical parameters including gill morphology and behavior. So, the intrusion of saline water should be controlled to avert the losses.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2673-2687"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44434012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The effect of multilayered chitosan–pectin–Mentha piperita and Lemon essential oil on oxidation effects and quality of rainbow trout fillet (Oncorhynchus mykiss) during refrigerator at 4±1˚C storage 壳聚糖-果胶-薄荷油和柠檬精油对虹鳟鱼鱼片4±1℃冷藏氧化效果和品质的影响

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI: 10.22092/IJFS.2020.119759.0

L. Moradi, A. Sharifan, K. Larijani

引用次数: 8

An In vitro and in vivo study on antimicrobial activity of Origanum vulgare extract and its nano form against Streptococcus iniae in rainbow trout (Oncorhynchus mykiss) 牛至提取物及其纳米制剂对虹鳟（Oncorhynchus mykiss）感染链球菌的体内外抗菌活性研究

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI: 10.22092/IJFS.2020.122452

Saideh Fakharzadeh, M. Haghighi, M. Rohani, I. Sharifpour, M. Hamidi

{"title":"An In vitro and in vivo study on antimicrobial activity of Origanum vulgare extract and its nano form against Streptococcus iniae in rainbow trout (Oncorhynchus mykiss)","authors":"Saideh Fakharzadeh, M. Haghighi, M. Rohani, I. Sharifpour, M. Hamidi","doi":"10.22092/IJFS.2020.122452","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122452","url":null,"abstract":"This study was performed in order to determine the antibacterial activity of oregano, Origanum vulgare extract (OVE) and its nano extract (NOVE) on Streptococcus iniae in rainbow trout in vitro and in vivo. Extractionwas done under standard percolation method. Then OVE and NOVE were screened to identify their antimicrobial activity against Streptococcus iniae by using disk diffusion assay and challenge methods. Also, the MIC and MBC values for OVE and NOVE were determined by micro dilution method. Furthermore, the antimicrobial effect of OVE and NOVE were examined by feeding rainbow trout fingerlings, with O. vulgare extract and its nano extract and florfenicol as a positive control. Then, all fish were injected intraperitoneal with S. iniae suspension in 3×108 CFU/mL concentration. Mortality rate was investigated for next 14 days after injection; then the spleen of fish samples removed to determine bacteria total count (SBT). In vitro results showed that OVE and NOVE had antimicrobial activity which was higher in NOVE. The inhibition zone of NOVE (26.066 mm) was significantly greater than OVE (21.7mm) (p <0.05). Also, the MIC and MBC values with high efficacy against S. iniae in NOVE treatment group were 0.25 and 0.5 mgmL respectively, which was lower than OVE treatment values (p <0.05). In vivo results showed that the mortality rate and SBT was significantly lower (p <0.05) in the fish fed with NOVE than OVE and the control group (p <0.05). These results indicated that the Origanum vulgare extract and its nano extract supplement are satisfactory as a prophylactic measure against rainbow trout streptococcosis and also for fish health improvement.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2454-2463"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41845655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

River health assessment using macroinvertebrates and water quality parameters: A case of the Shanbeh-Bazar River, Anzali Wetland, Iran 基于大型无脊椎动物和水质参数的河流健康评价:以伊朗Anzali湿地shanbehh - bazar河为例

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI: 10.22092/IJFS.2020.122380

A. Foomani, M. Gholizadeh, M. Harsij, S. Salavatian

{"title":"River health assessment using macroinvertebrates and water quality parameters: A case of the Shanbeh-Bazar River, Anzali Wetland, Iran","authors":"A. Foomani, M. Gholizadeh, M. Harsij, S. Salavatian","doi":"10.22092/IJFS.2020.122380","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122380","url":null,"abstract":"The study of benthic macroinvertebrate communities is one of the most common methods for assessing the effects of stresses on the biological conditions of aquatic ecosystems and water quality monitoring. This research was conducted to study the changes in the macroinvertebrate communities in the Shanbeh-Bazar River, Anzali International wetland and the effects of environmental factors. Sampling was done seasonally from spring to winter in 2017 from the. Bio-indicators, MDS, PCA, correlation and ANOSIM were used in this study. A total of 3963 macroinvertebrate belonging to 3 phyla, 9 orders of 17 families were identified. The two families of Chironomidae and Tubificidae were the most abundant, and the dominant group of the Shanbeh-Bazar River. The bio-indicators analysis varied from medium pollution to heavy pollution at different stations. MDS plot showed that sampling stations were clearly separated into 3 groups. ANOSIM and PCA analysis were shown that the human activities and urban wastewater effects on benthic communities such as increasing the resistant families (Tubificidae). The increasing of agricultural activities and the destruction of marginal forests at Stations 3 and 4 were caused the abundance of Chironomidae and Tubificidae increased. Since the Shanbeh-Bazar River has urban disturbance, especially wastewater inputs, agriculture, fishing and recreational boats, macroinvertebrate diversity decreased with increasing contaminants and stresses, led to an increase in resistant species. With the increase of agricultural and the destruction of marginal forests, the amount of organic matter increased in the water body. Anthropogenic activities are indicated to have the most negative effects on the river ecosystem. Thus, it was concluded that the river health of Shanbeh-Bazar River is within unacceptable range.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2274-2292"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45778667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Effects of dietary purslane (Portulaca oleracea) extract on growth performance, hematological indices and immune responses of rainbow trout (Oncorhynchus mykiss) fry 马齿苋提取物对虹鳟鱼苗生长性能、血液学指标和免疫反应的影响

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI: 10.22092/IJFS.2020.122576

M. Mohammadalikhani, M. S. Mehrjan, M. Haghighi, M. Soltani, A. Kamali

{"title":"Effects of dietary purslane (Portulaca oleracea) extract on growth performance, hematological indices and immune responses of rainbow trout (Oncorhynchus mykiss) fry","authors":"M. Mohammadalikhani, M. S. Mehrjan, M. Haghighi, M. Soltani, A. Kamali","doi":"10.22092/IJFS.2020.122576","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122576","url":null,"abstract":"Inclusion of dietary herbal supplements in aquafeed can be considered as a growth promoter and enhancer of immunity system in preventing various fish infections. Therefore, this experiment was conducted to evaluate the effects of different levels of purslane (Portulaca oleracea) extract (POE) on growth performance, hematological indices and immune responses of rainbow trout fry. The fries with initial weight of 3.3±0.1g were divided into four groups with feeding diets supplemented containing 0% (control, T0), 0.5% (T1), 1% (T2), 1.5% (T3) and 2% (T4) of POE for 56 days. After eight weeks of feeding trail, enriched POE diets significantly increased red blood cell count, white blood cell count, hematocrit, hemoglobin concentration, mean corpuscular hemoglobin (MCHC), neutrophil and monocyte percentages, especially in T3 group compared to the control group (p <0.05). Although no significant differences were observed between eosinophil percentage and MCHC, but lymphocyte percentage decreased significantly (p <0.05). Also supplemented diets with POE significantly increased immune parameters including total immunoglobulin (Ig), IgM, complementary activity, total protein and lysozyme activity in all experimental groups, especially in T3 (1.5% POE) compared with the control group (p <0.05). This study demonstrates POE as a potential immunostimulant to stimulate and improve immune system of rainbow trout fry.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2660-2672"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42203958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effects of enriched artemia with selenium nanoparticles on growth, survival and biochemical factors of guppy (Poecilia reticulata) 纳米硒富集卤虫对孔雀鱼生长、存活及生化因子的影响

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI: 10.22092/IJFS.2020.122554

S. Ziaei‐nejad, S. S. Shojaei, M. A. Chermahini

{"title":"Effects of enriched artemia with selenium nanoparticles on growth, survival and biochemical factors of guppy (Poecilia reticulata)","authors":"S. Ziaei‐nejad, S. S. Shojaei, M. A. Chermahini","doi":"10.22092/IJFS.2020.122554","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122554","url":null,"abstract":"This study was carried out to investigate the effects of enriched Artemia with selenium nanoparticles on growth and survival indices and biochemical factors in Poecilia reticulata larvae over a six-week period. Guppy fish larvae with a mean weight of 33.55 mg in three treatments and one control group (each with three replicates) were fed with Artemia franciscana enriched with 5, 10, and 50 mg/L selenium nanoparticles. In terms of growth indices, significant differences were observed among treatments in length increment, weight gain, specific growth rate and survival rate (P 0.05). Regarding biochemical factors, significant differences were observed between treatments. As in Artemia - fed treatments enriched with 5 and 10 mg of selenium nanoparticles (treatment 1 and 2) the lowest and in the treatment fed with Artemia - enriched 50 mg nanoparticles (Treatment 3) showed the highest levels of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, creatinine phosphokinase and lactate dehydrogenase. The highest total protein content was observed in treatment 2, which was significantly different from other treatments (P <0.05). Overall, if the goal of using selenium-enriched Artemia in fish larval diet is to increase survival and growth rate and improve biochemical indices, the use of selenium nanoparticles of 5 and 10 mg/l is appropriate for enriching Artemia to feed fish larvae.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2593-2607"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45111061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Isolation and identification of antibacterial steroid compounds from Ulva fasciata in the Persian Gulf 波斯湾斑叶Ulva fasciata中抗菌甾体化合物的分离与鉴定

IF 0.9 4区农林科学

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI: 10.22092/IJFS.2020.122254

Motallebi Moghanjoughi, Sharif Ruhani, A. Nasab

{"title":"Isolation and identification of antibacterial steroid compounds from Ulva fasciata in the Persian Gulf","authors":"Motallebi Moghanjoughi, Sharif Ruhani, A. Nasab","doi":"10.22092/IJFS.2020.122254","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122254","url":null,"abstract":"Due to numerous reasons, marine-obtained resources have attracted the interest of researchers. One of the subjects attracted the interest of researchers in recent years in the field of biologist marine algae due to their nutritional value, their benefits for health and their biological activities. In this study, the powder was extracted using acetone, then the extract purified by silica gel column chromatography with n-hexane and ethyl acetate combination to isolate the steroid compounds. Isolated compound was run through TLC and sprayed with vanillin-sulphuric acid reagent to detect the steroid compounds and profile of isolated compounds obtained by gas chromatography (GC). Antibacterial activity of steroids extracted of green algae Ulva fasciata from Qeshm Island in the Persian Gulf were assessed (in vitro). The antibacterial activity of the fractions was determined by Broth Dilution Methods against clinical Gram-negative bacteria: Escherichia coli,Pseudomonas aeruginosa, Salmonella. typhi and Gram-positive bacteria: Staphylococcus aureus, Bacillus subtilis, Bacillus cereus. The steroids; cholest-7-en-3ol and cholestan-3-one, cyclic 1, 2-ethanediyl acetal compounds in column fraction were identified by GC. The results showed the minimum bactericidal concentration (MBC) of the cholest-7-en-3ol and cholestan-3-one, cyclic 1,2-ethanediyl acetal for S. aureus and Bacillus cereus were 500 μg mL-1, the MBC of the cholest-7-en-3ol for B. subtilis was 500 μg mL-1 and 1000 μg mL-1 detected for cholestan-3-one, cyclic 1,2-ethanediyl acetal. The compounds had neither antibacterial activity on gram negative bacteria. Based on our results, extracted steroids from U. fasciata can be considered as a source of novel antibiotics.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2384-2393"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43279846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4