| Summary: | [eng] Total lipids and fatty acid composition of eleven Black Sea (sprat, goby, shad, horse mackerel, red mullet, turbot, bluefish, anchovy, garfish, grey mullet and bonito) and four freshwater (carp, bighead carp, catfish and trout) commercially important fish species were determined. Seasonal changes of lipid content and fatty acid (FA) composition of six Black Sea fish (sprat, goby, shad, horse mackerel, red mullet, and turbot). In this research a lipid analysis enabled the classification and quantitative determination of FA as well as the sum of saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), and polyunsaturated fatty acids (PUFA). The omega-3 and omega-6 polyunsaturated FA (PUFA) contents were investigated. Significant seasonal changes of lipid content and individual FA and FA groups were observed for six Black Sea species. Based on presented results of FA composition were calculated lipid quality indices (as Atherogenic, Thrombogenic and Cholesterolemic), omega-6/omega-3 and PUFA/SFA ratios and quantities of long-chain eicisapentaenoic (EPA) and docosahexaenoic (DHA) omega-3 PUFA in g.100g-1 edible tissue. Energy value based on lipid and protein content of seven Black Sea fish were determined and calculated according to WHO/FAO factor system (2011). Tables’ whit energy values, lipid, protein and moisture contents, and FA composition of these seven species were composed. Obtained results indicated that all analyzed fish species are good sources of omega-3 PUFAs and presented balanced FA composition. Изследван е мастнокиселинния състав на 11 черноморски (трицона, кая, карагьоз, сафрид, калкан, барбуна, паламуд, зарган, чернокоп, кефал и хамсия) и 4 сладководни рибни вида (шаран, толстолоб, пъстърва и сом) със стопанско значение. За 6 от черноморските видове (трицона, кая, карагьоз, сафрид, калкан и барбуна) е проследена сезонната промяна в липидното съдържание и мастнокиселинен състав. Идентифицирани са 34 мастни киселини (МК), с права верига и четен брой С-атоми (от С10-С24:1). ...
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