Seasonal and culture period variations in the lipid and fatty acid content of Ulva lactuca cultivated in Mikhmoret onshore (Israel)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-04 DOI:10.1515/bot-2023-0027

Nabeel Gnayem, Razan Unis, Rima Gnaim, Alexander Chemodanov, Álvaro Israel, Jallal Gnaim, Alexander Golberg

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引用次数: 0

Abstract

The use of high-value fatty acids (FA), omega-3 (n-3), and omega-6 (n-6) from seaweed could relieve the pressure from natural wild fish sources and reduce overfishing worldwide. This research is designed to explore how the harvest season (winter, spring, and summer) and culture period influence the biomass production yield, lipid content, and FA composition in the green seaweed Ulva sp. The studied seaweed was grown in plastic sleeves with flowthrough seawater in Mikhmoret (East Mediterranean, Israel) from July 2019 to December 2020. The Ulva species was identified as Ulva lactuca Linnaeus by DNA barcoding using rbcL, ITS, and tufA markers. No detectable genetic variability in U. lactuca samples was found throughout the research period. A quantitative examination of the lipid and FA content in U. lactuca in different harvest seasons revealed that the maximum content of lipids was in the summer, and that of polyunsaturated fatty acids (PUFAs) was in the winter. The PUFA profile included eicosapentaenoic acid, docosapentaenoic acid, docosahexaenoic acid, n-3, and n-6, where the n-6/n-3 ratio was comparable with the desired range for a balanced nutritional diet.

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Mikhmoret 沿岸（以色列）养殖的乳莼脂质和脂肪酸含量的季节和养殖期变化

利用海藻中的高价值脂肪酸（FA）、ω-3（n-3）和ω-6（n-6）可以缓解天然野生鱼类资源的压力，减少全球范围内的过度捕捞。本研究旨在探讨收获季节（冬季、春季和夏季）和养殖期如何影响绿色海藻莼菜（Ulva sp）的生物量产量、脂质含量和脂肪酸组成。所研究的海藻于 2019 年 7 月至 2020 年 12 月在 Mikhmoret（以色列东地中海）的塑料套管中用流动海水养殖。通过使用 rbcL、ITS 和 tufA 标记进行 DNA 条形编码，确定莼菜物种为林尼厄斯乳莼（Ulva lactuca Linnaeus）。在整个研究期间，未发现乳莼样本中存在可检测到的遗传变异。在不同收获季节对乳莼菜中的脂质和脂肪酸含量进行的定量检测显示，夏季脂质含量最高，冬季多不饱和脂肪酸（PUFA）含量最高。多不饱和脂肪酸包括二十碳五烯酸、二十二碳五烯酸、二十二碳六烯酸、n-3 和 n-6，其中 n-6/n-3 的比例与均衡营养膳食的理想范围相当。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.