Stereospecific Analysis of Triacylglycerol and Phospholipid Fractions of Five Wild Freshwater Fish from Poyang Lake
Stereospecific Analysis of Triacylglycerol and Phospholipid Fractions of Five Wild Freshwater Fish from Poyang Lake
复制标题
鄱阳湖五种野生淡水鱼三酰甘油和磷脂组分的立体定向分析
DOI：
10.1021/jf204584t
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发表时间：
2012-02-22
影响因子：
6.1
通讯作者：
Deng, Ze-Yuan
中科院分区：
文献类型：
--
作者：
Lei, Lin;Li, Jing;Deng, Ze-Yuan
研究了中国最大淡水湖--鄱阳湖5种野生淡水鱼(香鱼、翘嘴红鱼、黄鳍鱼、中华鳖、鲤鱼)的三酰甘油(TAG)和磷脂(PL)的脂肪酸组成及其位置分布。TAG中n-3多不饱和脂肪酸(PUFA)含量最高(13.59%)，最低为(n-6)/(n-3)(0.65)。多不饱和脂肪酸(PUFA)含量较高，依次为磷脂酰乙醇胺(PE)、卵磷脂(GT)、卵磷脂(PC)、TAG。9c11t-18：2占共轭亚油酸总量的6.38-50.77%。中国对虾的奇支链脂肪酸(OBCFA)含量最高，为26.7%。研究表明，脂肪酸在sn位的分布不是随机的：TAG的第1、3位为单不饱和脂肪酸(MUFA)和蚕蛹，第2位为饱和脂肪酸(SPA)，sn-1-PL以SFA和MUFA为主，sn-2-PL以PUFA为主。
The fatty acids (FA) compositions and positional distributions in triacylglycerols (TAG) and phospholipids (PL) of five wild freshwater fish (Squaliobarbus curriculus, Erythroculter ilishaeformis, Pseudobagrus fulvidraco, Bostrichthys sinensis, and Siniperca kneri Garman) from Poyang Lake (the largest freshwater lake of China) were studied. For TAG, S. kneri German had the highest content (13.59%) of n - 3 polyunsaturated fatty acids (PUFA) and E. ilishaeformis had the lowest ratio of (n - 6)/(n - 3) (0.65). PL had a high content of PUFA, which declined in the order of phosphatidylethanolamine (PE) > phosphatidylcholine (PC) > TAG. 9c11t-18:2 accounted for 6.38-50.77% of total conjugated linoleic acids (CLA). The highest level of odd-branched chain fatty acids (OBCFA) was 26.7% in B. sinensis. The study revealed that the distribution of FA among the sn positions was not random: monounsaturated fatty acids (MUFA) and PUPA preferred positions 1 and 3 and saturated fatty acids (SPA) position 2 of TAG, while SFA and MUFA predominated over sn-1-PL and PUFA over sn-2-PL.