Amount of Squalene and Fatty Acid Composition of Triacylglycerols and Phospholipids in Flesh and Liver Lipids of Some Deep-sea Teleost Fish, Morid Cods and Whiptails

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Abstract

Examination was made of the amounts of squalene and fatty acid compositions of triacylglycerols (TG) and phospholipids (PL) in the flesh and liver lipids of five species of deep-sea teleost fish: the Pacific flatnose Antimora microlepis and the black mora Halargyreus johnsonii of morid cods and the roughscale rattail Coryphaenoides acrolepis, the pop-eye grenadier C. cinereus and the pectoral rattail C. pectoralis of whiptails. Liver specimens of these deep-sea teleost fish contained copious amounts of lipids (19.5-65.1%) which were composed almost entirely of TG (72.6-95.9%). Flesh samples contained small amounts of lipids (0.3-0.5%) with lower TG (0.9-1.4%) and higher PL (53.8-76.0%) content. In the livers and flesh, unsaponifiable matter from the neutral lipids comprised squalene (42.4-57.7% and 3.7-10.3%) and sterols (22.8-51.0% and 84.0-95.3%), respectively, and the squalene content of liver lipids corresponded to 0.57-1.76%. Component fatty acids in TG from liver lipids were characteristically rich in monoenes (59.5-73.0%) with 22:1n-11 (15.7-24.1%), 18:1n-9 (11.2-16.6%) and 20:1n-11 (8.7-10.9%) acids. Nevertheless, component fatty acids in PL from flesh lipids were rich in polyenes (37.6-44.2%) with 22:6n-3 (23.1-28.4%) and 20:5n-3 (8.7-8.8%) acids.<br>

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