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Analysis of Phytosterol, Fatty Acid, and Carotenoid Composition of 19 Microalgae and 6 Bivalve Species
Journal of Aquatic Food Product Technology ( IF 1.6 ) Pub Date : 2020-04-15 , DOI: 10.1080/10498850.2020.1749744
Risako Hikihara 1 , Yasuhiro Yamasaki 2 , Tomoyuki Shikata 3 , Natsuko Nakayama 3 , Setsuko Sakamoto 3 , Sueo Kato 4 , Hideo Hatate 1 , Ryusuke Tanaka 1
Affiliation  

ABSTRACT In this study, the functional components of 19 microalgae and 6 bivalve species were investigated in the context of the application in bivalve feeding and human health food. Principal component analysis was performed to detect any association between the functional components and individual microalgal species or taxonomic group. The proportions of the functional components differed depending on the taxonomic group or species of microalga. The genera Cheatoceros, Thalassiosira, and Isochrysis contained high concentrations of fucosterol and fucoxanthin, which are present in large amounts in brown algae. Diatoms, haptophytes, and eustigmatophytes, which are used as feed for bivalves, were rich in fucosterol and eicosapentenoic acid (EPA); further, haptophytes were rich in docosahexaenoic acid (DHA). In addition, the microalgae associated with red tide, i.e., the raphidophytes, were found to be rich in fucoxanthin, β-sitosterol, and EPA, whereas dinoflagellates were rich in DHA. Seven bivalve species also contained high concentrations of fucosterol, EPA, and DHA, as did microalgae, which were used to feed by bivalves. These results are useful in selecting microalgae effectively as feed of the bivalves.

中文翻译:

分析 19 种微藻和 6 种双壳类动物的植物甾醇、脂肪酸和类胡萝卜素成分

摘要 本研究以双壳贝类饲养和人类保健食品的应用为背景,对 19 种微藻和 6 种双壳类动物的功能成分进行了研究。进行主成分分析以检测功能成分与单个微藻物种或分类群之间的任何关联。功能成分的比例因微藻的分类群或物种而异。Cheatoceros、Thalassiosira 和 Isochrysis 属含有高浓度的岩藻甾醇和岩藻黄质,它们在褐藻中大量存在。用作双壳类饲料的硅藻、触须藻和桉藻富含岩藻甾醇和二十碳五烯酸 (EPA);此外,触生植物富含二十二碳六烯酸 (DHA)。此外,发现与赤潮相关的微藻,即针藻,富含岩藻黄质、β-谷甾醇和 EPA,而鞭毛藻则富含 DHA。七种双壳类动物也含有高浓度的岩藻甾醇、EPA 和 DHA,微藻也是如此,它们被双壳类动物用作饲料。这些结果有助于有效地选择微藻作为双壳类的饲料。
更新日期:2020-04-15
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