State Key Laboratory of Food Science and Technology, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, China.
J Agric Food Chem. 2012 Feb 22;60(7):1857-64. doi: 10.1021/jf204584t. Epub 2012 Feb 10.
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 PUFA preferred positions 1 and 3 and saturated fatty acids (SFA) position 2 of TAG, while SFA and MUFA predominated over sn-1-PL and PUFA over sn-2-PL.
研究了来自中国最大的淡水湖鄱阳湖的 5 种野生淡水鱼（团头鲂、翘嘴红鲌、黄颡鱼、中华倒刺鲃和青石斑鱼）的三酰基甘油（TAG）和磷脂（PL）中的脂肪酸（FA）组成和位置分布。对于 TAG，德国团头鲂的 n-3 多不饱和脂肪酸（PUFA）含量最高（13.59%），而翘嘴红鲌的（n-6）/（n-3）比值最低（0.65）。PL 含有丰富的 PUFA，其含量顺序为：磷脂酰乙醇胺（PE）>磷脂酰胆碱（PC）>TAG。9c11t-18:2 占总共轭亚油酸（CLA）的 6.38-50.77%。奇数支链脂肪酸（OBCFA）含量最高的是中华倒刺鲃，为 26.7%。研究表明，FA 在 sn 位置的分布并非随机：单不饱和脂肪酸（MUFA）和 PUFA 优先占据 TAG 的 1 位和 3 位，饱和脂肪酸（SFA）优先占据 2 位，而 SFA 和 MUFA 优先占据 sn-1-PL，PUFA 优先占据 sn-2-PL。
