engleski

Liver and Muscle Tisue Fatty Acid Composition of the Lipid Fractions of Diplodus vulgaris from the North Adriatic Sea, Croatia

The liver and muscle tissue from two-banded sea bream, Diplodus vulgaris, were analyzed. The total lipid content was 1.1 &#177; 0, 3% in the edible muscle tissue and 4.5 &#177; 1, 0 % in the liver. The fatty acid composition of triacylglycerols and polar (phosphatidylinositol, phosphatidylserine, phosphatidylcholine, phosphatidylethanolamine) lipid fractions from the liver and muscle tissue were determined. The major fatty acids in both tissues were saturates: palmitic (20.8 &#8211; 43.4 %) and stearic acids (6.3 &#8211; 33.7 %) ; monoenes: oleic (10.0 &#8211; 33.6 %) and palmitoleic acids (2.1 &#8211; 11.0 %) ; polyunsaturates: arachidonic (1.5 &#8211; 8.6 %), docosatrienoic (0.8 &#8211; 11.6 %), eicosapentaenoic (1.1 &#8211; 5.5 %) and docosahexaenoic acids (1.5 &#8211; 9.9 %). The liver contained more n-3 polyunsaturated fatty acids in comparison with the muscle tissue. Statistically significant diference in the relative ratios of the eicosapentaenoic acid was found in phosphatidylethanolamine between muscle and liver tissue (p<0.01). The relative ratio of docosahexaenoic acid was statistically significantly higher in liver triacylglycerols (p<0.0005) and phosphatidylcholine (p<0.05) when compared with the muscle tissue.

Fatty acid composition; lipid fractions; fish; liver; muscle tissue; Diplodus vulgaris

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