【摘要】 研究了蓝圆鱼参、金色小沙丁鱼、颌圆鱼参、鲐鱼、竹鱼、羽鳃鲐肌油中的脂肪酸组成及含量变化。结果表明 :鱼油中都含有C12 C2 2 系列脂肪酸。饱和脂肪酸 (SFA)占总脂肪酸 (TFA)的 35 .2 4%～ 38.6 0 % ,单不饱和脂肪酸 (MUFA)占 2 3.5 9%～ 30 .0 7% ,多不饱和脂肪酸 (PUFA)占 33.0 6 %～ 40 .33% ,EPA占2 .35 %～ 3.6 2 % ,DHA占 1 7.95 %～ 2 4.49%。 3FA/ 6FA均大于 2。SFA中 ,C16∶0 、C18∶0 占主要成分 ;MUFA中C18∶1占主要成分 ;PUFA中 ,含量最高的是DHA ,其次为C2 0∶4 、EPA、C2 2∶5等。周年变化表明 :鱼类繁殖期 ,PUFA、DHA含量较高。EPA整年保持较低水平 ,波动不大。随鱼肌脂含量的升高 ,PUFA呈下降趋势。多元线性回归结果显示 :各种脂肪酸的含量及所占的百分比的变化更多地依赖于鱼肌中脂肪含量的变化 ,与季节有一定关系 ,但与体长的关系不大。更多还原

【Abstract】 Fatty acid of six pelagic fish (Decapterus maruadsi,Sardinella aurita, Decapterus lajang, Pneumatophorus japonicus, Trachurus japonicus, Rastrelliger kanagurta) were studied. Saturated, Monounsaturated, Polyunsaturated fatty acids represent 35.24%-38.60%, 23.59%-30.07%, 33.06%-40.33% of the total fatty acids in fish oil respectively, EPA and DHA represent 2.35%-3.62% and 17.95%-24.49%, -3FA/-6FA>2. The major fatty acids of SFA, MUFA, PUFA are respectively C 16∶0 、C 18∶0 ;C 18∶1 ;DHA、C 20∶4 、EPA and C 22∶5 . When the lipid content increased the PUFA% decreased, which might be related to reproductive activities. The compositional percentage and content of some fatty acids show larger fluctuations in one year. Adopting the multiple regression, the compositional percentage and content variations of some fatty acids are found to depend on most clearly on the lipid content, and on the season, but no more relations with body length.更多还原