選択イオン質量分析法によるカツオ普通筋ジアシルグリセロリン脂質の分子種分析〔英文〕

概要

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The molecular species of 1, 2-diacylglycerophospholipids of bonito Euthynnus pelamis (Linna-eus) white muscle were determined by selected-ion monitoring gas chromatography/mass spectro-metry using electron impact ionization. The 1, 2-diacylglycerol tert-butyldimethylsilyl ether derivatives obtained from the glycerophospholipids were separated on a polar open-tubular column gas liquid chromatography based on the numbers of both total acyl carbons and double bonds. Peak assignment was carried out by locating the characteristic fragment ions, two types of [RCO+74]+ ions due to fatty acyl residues on sn-1 and sn-2 positions of 1, 2-diacylglycerol and [M-57]+ ions indicating the corresponding molecular weight. Consequently, the highly un-saturated 1, 2-diacylglycerophospholipids such as 20: 5n-3-20: 5n-3, 20: 5n-3-22: 6n-3 and 22: 6n-3-22: 6n-3 species were identified in the bonito white muscle.
日本水産學會の論文