【摘要】 测定了鲢、大口黑鲈和团头鲂三种养殖淡水鱼肌肉脂质的含量、分布、成分及脂肪酸组成 ,调查了鲢肌肉脂质含量与体重的关系。结果表明 :(1)肌肉脂质的主要成分是甘油三酯和极性脂 ,中性脂含量影响决定了肌肉的总脂含量。 (2 )腹部肌肉的脂质含量是背部的 2～ 5倍。 (3)鲢肌肉的脂质含量随体重的增加而增加。 (4)主要的脂肪酸有 16∶0、16∶1n 7、18∶1n 9、18∶2n 6、18∶3n 3、2 0∶5n 3和 2 2∶6n 3,多烯酸的含量是 15 .8～32 .9% ,Σn 3与Σn 6的比率是 2 .5 (鲢 )、2 .7(大口黑鲈 )和 0 .3(团头鲂 )。更多还原

【Abstract】 The lipid and fatty acid composition of muscle of three species of cultured freshwater fish, silver carp, blunt snout bream, large mouth black bass, was examined in this paper. The relation between total lipid (TL) content in muscle and body weight of silver carp was also studied. The major components of total lipid (TL) in muscle were triacylglycerol (TG) and polar lipids (PL). Differences of TL content were dependent on neutral lipid (NL) contents. TL in belly flap was 2-5 times TL in dorsal muscle. The bigger silver carps were, the higher TL contents in muscle were. The main fatty acids were 16∶0,16∶1n 7,18∶1n 9,18∶2n 6,18∶3n 3,20∶5n 3 and 22∶6n 3. The polyunsaturated fatty acids (PUFA) content was 15.8-32.9%. The Σn 3/Σn 6 ratio was 2.7(silver carp),2.7(large mouth black bass) and 0.3(blunt snout bream).更多还原