Spectrum of Fatty Acids for Different Morpho-Ecological Groups of Baikal Omul Coregonus autumnalis migratorius (Georgi, 1775)
O. Y. Glyzina1, E. V. Dzyuba1, N. S. Smirnova-zalumi1, T. N. Basharina1, V. V. Smirnov2, A. V. Glyzin3
1 Limnological Institute, Siberian Branch of the Russian Academy of Sciences
2 Ul. Akademicheskaya 1, Listvyanka, Irkutsk 664520 (Russia)
3 Baikal Museum, Irkutsk Science Centre of the Russian Academy of Sciences
glyzina@lin.irk.ru, bmsmirnov@mail.ru
Keywords: polyunsaturated fatty acids, morphо-ecological groups, Baikal omul
Pages: 133-138
Abstract
Fatty acid content in muscular tissue and liver of three morpho-ecological groups of the Baikal omul was determined for the first time. Among total lipids in all the fish individuals studied, prevailing groups are presented by polyunsaturated (38.5-53.8 % of the total acid content) and saturated (31.8-36.5 %) fatty acids. Polyunsaturated acids are presented mainly by 22:6(n-3) and 20:5(n-3), their sum varies within the range of 16.8-33.3 %. The lipids of muscles contain a high fraction of polyunsaturated fatty acids at the expense of docosahexaenic acid (13.28-24.66 %). No considerable differences were revealed between different morpho-ecological groups of omul concerning the composition of fatty acids of lipids. Due to a moderate total fat content (6.37-7.65 %) and a balanced polyunsaturated fatty acid n-3/n-6 ratio in muscular tissue, the Baikal omul may be considered a high-quality dietetic foods as well as a raw material for obtaining biologically active supplements.
|
