Aquatic Sciences and Engineering最新文献_第7页

Optimization of Culture Conditions for Total Carotenoid Amount Using Response Surface Methodology in Green Microalgae / Ankistrodesmus convolutus 响应面法优化绿色微藻/圆颈藻总类胡萝卜素的培养条件

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Aquatic Sciences and Engineering Pub Date : 2021-12-29 DOI: 10.26650/ase2020785091

N. Şener, Z. Demirel, E. Imamoglu, Meltem Conk Dalay

{"title":"Optimization of Culture Conditions for Total Carotenoid Amount Using Response Surface Methodology in Green Microalgae / Ankistrodesmus convolutus","authors":"N. Şener, Z. Demirel, E. Imamoglu, Meltem Conk Dalay","doi":"10.26650/ase2020785091","DOIUrl":"https://doi.org/10.26650/ase2020785091","url":null,"abstract":"Commercial carotenoids of green microalgae have become significant especially for their applications in the cosmetic, pharmaceutical, food and feed industries. Effects of physical and chemical parameters on carotenoid contents in isolated microalgal species have been investigated. The variables of shaking rate, nitrogen concentration and light intensity affect biomass production and the synthesis of carotenoids in the green microalgae were investigated using the statistical design by Box-Behnken (BBD) employing Response Surface Methodology (RSM). Furthermore, the optimized cultivation conditions using BBD for Chlorella vulgaris, Ankistrodesmus convolutus, Dunaliel-la salina, Tetraselmis striata were determined using the spectrophotometric method to enhance carotenoid concentration. A. convolutus within the green algae was detected with the highest carotenoid concentration. The optimum conditions results indicated that the growth of A. convolutus (0.55 mg/L) and production of total carotenoids (25.1138 mg/g biomass) were found at the stirrer rate of 100 rpm under the light intensity of 100 μE/m 2 s, and in the nutrient component of 8.82 mM NaNO 3 . These conditions were validated experimentally for total carotenoid yield (24.13 mg/g biomass). After that the production was performed in a flat-plate photobioreactor with a volume of 6L based on the optimized conditions and the carotenoid profile was defined by HPLC-DAD using standards such as violaxanthin, astaxanthin and β -carotene. This study proposes that the RSM approach can be used to define optimal conditions for large-scale production of carotenoids by A. convolutus .","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49347182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

New Records of Diatoms (Bacillariales, Rhopalodiales & Surirellales) with ultrastructure details from the Black Sea Coast of Turkey 土耳其黑海沿岸硅藻（Bacillarales、Rhopalodiales和Surirellales）的新记录及其超微结构细节

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Aquatic Sciences and Engineering Pub Date : 2021-11-23 DOI: 10.26650/ase2021983449

Seher Dirican, Aydin Kaleli, E. Yilmaz, A. Özer, H. Dayıoğlu

引用次数: 2

Biological and Reproductive Indices of Mystus bleekeri (Day, 1877) in Open Water Body (Dekhar Haor) of Bangladesh 孟加拉开放水域(Dekhar Haor)水蚤(Mystus bleekeri, Day, 1877)的生物学和繁殖指数

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Aquatic Sciences and Engineering Pub Date : 2021-11-15 DOI: 10.26650/ase2021979813

S. Mazumder, M. Salam, A. Khan, S. Khalil, Tawheed Hasan

引用次数: 1

Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea 基于一般成瘾性模型的爱琴海沙丁鱼围网渔获率与环境因素的关系

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Aquatic Sciences and Engineering Pub Date : 2021-10-15 DOI: 10.26650/ase2021963166

Z. Tosunoğlu

{"title":"Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea","authors":"Z. Tosunoğlu","doi":"10.26650/ase2021963166","DOIUrl":"https://doi.org/10.26650/ase2021963166","url":null,"abstract":"By catch is a serious conservation challenge for the fisheries whose viability is increasingly under threat. To approach maximum by catch reduction with minimum loss of targeted catch, fisheries need to have information on the environmental and anthropogenic factors in multi species seas like the Mediterranean. In this study, we used generalized additive models (GAM) to by the catch ratio of purse seine fishery to determine the effects of environmental variables. The data were collected during each fishing trip in the 2018-2019 fishing season that covers the time period between September 1st and April 15th. There were 26 species (66.216 mt in total) recorded as by catch and the rates of by catch species in the total by catch amount varied between 0.001% and 23.1%. In terms of habitat of by catch species, the total ratios of benthopelagic, demersal and pelagic species were 52% , 28% and 20%, respectively. Significant interactions observed indicate that the fluctuations in by catch ratios differed by depth and sea surface temperature, whereas the quarters of year and the moon phases were not found to affect by catch ratios significantly.","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44230185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring of Biochemical Effects of Phenol in the Carp (Cyprinus carpio) Fry 鲤鱼鱼苗中酚的生化效应监测

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Aquatic Sciences and Engineering Pub Date : 2021-10-13 DOI: 10.26650/ase2021864312

Mikail Özcan, Ü. İspir

引用次数: 1

The First Record of Geryonia proboscidalis (Forskål, 1775), (Cnidaria: Hydrozoa) on the Coasts of Gökçeada, the Aegean Sea, Turkey 土耳其爱琴海Gökçeada海岸第一次记录Geryonia proboscidalis (forsk<s:1>， 1775)，(刺胞目:水螅目)

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Aquatic Sciences and Engineering Pub Date : 2021-08-16 DOI: 10.26650/ase2021962514

Melek Işinibilir Okyar, Esin Yüksel Durmaz, S. O. Güreşen

引用次数: 0

Faculty of Aquatic Sciences, Department of Fisheries and Seafood Processing Technology 水产与海产品加工技术系水产科学学院

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Aquatic Sciences and Engineering Pub Date : 2021-08-12 DOI: 10.26650/ase2021928254

Didem Üçok Alakavuk, Suhendan Mol

引用次数: 0

Impacts of a Garbage Disposal Facility on the Water Quality of Çavuşlu Stream in Giresun, Turkey: A Health Risk Assessment Study by a Validated ICP-MS Assay 垃圾处理设施对土耳其Giresun Çavuşlu河流水质的影响:一项经验证的ICP-MS分析的健康风险评估研究

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Aquatic Sciences and Engineering Pub Date : 2021-07-27 DOI: 10.26650/ase2020845246

B. Yüksel, F. Ustaoğlu, E. Arıca

{"title":"Impacts of a Garbage Disposal Facility on the Water Quality of Çavuşlu Stream in Giresun, Turkey: A Health Risk Assessment Study by a Validated ICP-MS Assay","authors":"B. Yüksel, F. Ustaoğlu, E. Arıca","doi":"10.26650/ase2020845246","DOIUrl":"https://doi.org/10.26650/ase2020845246","url":null,"abstract":"Environmental concerns have been raised because of a garbage disposal facility (GDF) constructed near Çavuşlu Stream in Giresun, Turkey. This article proposes a fully validated ICP-MS technique to investigate the impacts of the GDF on the water quality of the stream and provide a human health risk estimation. Water sampling was carried out at four different stations and in tap water since the stream is the primary source of drinking water for the inhabitants of the town. Quantification of selected toxic metals (As, Pb, Cd, Hg, Sb, Al, and Ni) in conjunction with the essential and other elements (Se, Cu, Fe, Mg, Mn, Zn, and Co) was performed by the use of the previously validated ICP-MS method. Once water quality index (WQI), heavy metal pollution index (HPI), and heavy metal evaluation index (HEI) were computed, the health risk assessment was studied according to the US EPA’s method. Although the stations (2, 3, 4, and tap water) showed excellent water quality, station-1, which is the closest one to the facility, was classified as poor water quality. Lifetime cancer risk (LCR) was only significant both for adults and children in station-1. In addition, low risk regarding non-carcinogenic health hazards was found for children. The results indicate that the facility decreases the water quality of this stream and is possibly responsible for LCR. In conclusion, the ecological environment and human health should be protected by further monitoring the effect of the GDF on the ecological system.","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46858198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 34

Is Gambusia holbrooki Known as an Invasive Fish Species in Küçük Menderes River Basin Lakes (Turkey)? 冈比亚霍尔布鲁克是KüçüK Menderes河流域湖泊中的一种入侵鱼类吗（土耳其）？

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Aquatic Sciences and Engineering Pub Date : 2021-05-03 DOI: 10.26650/ase2020755178

I. Kurtul, H. Sarı

引用次数: 0

Effect of Different Shaking Systems on the Growth of Marine Diatom Phaeodactylum Tricornutum 不同振荡系统对三角藻生长的影响

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Aquatic Sciences and Engineering Pub Date : 2021-05-03 DOI: 10.26650/ase2021905122

Sevil Deniz Yakan Dündar, Oktay Türeyen

引用次数: 0