Lipid Status and Fatty Acid Spectrum of Black Baikalian Grayling Thymallus arcticus baicalensis Dybowski, 1874
O. Y. Glyzina, E. V. Dzyuba, N. A. Latyshev, V. V. Smirnov, G. A. Fedorova, A. V. Glyzin, T. N. Basharina
Keywords: fatty acids, black Baikalian grayling Thymallus arcticus baicalensis, muscles, liver, lipids
Pages: 15-20
Abstract
Concentrations of different classes of lipids and fatty acids in muscles and liver of black Baikalian grayling Thymallus arcticus baicalensis Dybowski, 1874 were determined for the first time. Neutral lipids (triglycerides) were detected to prevail in all the investigated tissues, while phospholipid content of red muscles is two times lower than that of white muscles. The composition of fatty acids of total lipids for all the organs is dominated by polyunsaturated (44.58-53.7 %) and saturated (19.06-30.94 %) acids. Polyunsaturated ones are mainly represented by the 22:6n-3 and 20:5n-3 acids; their total fraction was 19.5-39.1 %. The ratio of fatty acids of the n-3/n-6 series depends on tissue kind and varies within the range 2.19-4.02. In the lipids of white muscles, the fraction of polyunsaturated fatty acids is higher due to docosahexaenoic acid. For the reason of total fattiness and the balanced ratio of polyunsaturated fatty acids of the n-3/n-6 series in the muscle tissues, black Baikalian grayling may be used as a high-quality raw material for developing dietary and specialized food products and biologically active additives.
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