Comparison of Fatty Acid Contents in Major Lipid Classes of Seven Salmonid Species from Siberian Arctic Lakes

Long-chain omega-3 polyunsaturated fatty acids (LC-PUFA) essential for human nutrition are mostly obtained from wild fish catch. To sustain LC-PUFA supply from natural populations, one needs to know how environmental and intrinsic factors affect fish fatty acid (FA) profiles and contents. We studied...

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Bibliographic Details
Published in:Biomolecules
Main Authors: Надежда, Николаевна Сущик, Олеся, Николаевна Махутова, Анастасия, Евгеньевна Рудченко, Лариса, Александровна Глущенко, Светлана, Петровна Шулепина, Анжелика, Александровна Колмакова, Михаил, Иванович Гладышев
Other Authors: Институт фундаментальной биологии и биотехнологии, Кафедра водных и наземных экосистем
Format: Article in Journal/Newspaper
Language:unknown
Published: 2020
Subjects:
Arctic
Salmoniformes
long-chain polyunsaturated fatty acids
polar lipids
triacylglycerols
eicosapentaenoic acid
docosahexaenoic acid
Online Access:https://www.mdpi.com/2218-273X/10/3/419
http://elib.sfu-kras.ru/handle/2311/142586
https://doi.org/10.3390/biom10030419
Description
Summary:Long-chain omega-3 polyunsaturated fatty acids (LC-PUFA) essential for human nutrition are mostly obtained from wild fish catch. To sustain LC-PUFA supply from natural populations, one needs to know how environmental and intrinsic factors affect fish fatty acid (FA) profiles and contents. We studied seven Salmoniformes species from two arctic lakes. We aimed to estimate differences in FA composition of total lipids and two major lipid classes, polar lipids (PL) and triacylglycerols (TAG), among the species and to evaluate LC-PUFA contents corresponded to PL and TAG in muscles. Fatty acid profiles of PL and TAG in all species were characterized by prevalence of omega-3 LC-PUFA and C16-C18 monoenoic FA, respectively. Fish with similar feeding spectra were identified similarly in multivariate analyses of total lipids, TAG and PL, due to differences in levels of mostly the same FA. Thus, suitability both TAG and total lipids for identification of feeding spectra of fish was confirmed. All species had similar content of LC-PUFA esterified as PL, 1.9 - 3.5 mg · g-1, while the content as TAG form strongly varied, from 0.9 to 9.8 mg · g-1. The LC-PUFA-rich fish species accumulated these valuable compounds predominately in TAG form.

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