The fatty acid composition oi intestinal mucosa oi two Antarctic teleosts, Chionodraco hamatus and Trematomus bernacchii, was investigated in comparison with two temperate water species: Anguilia anguilla and Dicentrarchus labrax. Higher amounts oi unsaturated and monounsaturated fatty acids were present in the Antarctic species, while the polyunsaturated fatty acid levels were not significantly different in all fish species. A higher content oi phosphatidylethanolamine (a phospholipid rich in unsaturated fatty acids and with a relatively low melting point) and a lower content oi sphingomyelin (a phospholipid rich in saturated fatty acids and with relatively high melting point) were observed in T. bernacchii in comparison with A. anguilla.
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