title: Stereospecific analysis of triacylglycerol and phospholipid fractions of five wild freshwater fish from Poyang Lake.
abstract: 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.
authors.affiliation: State Key Laboratory of Food Science and Technology, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Lei
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Guang-Yan
authors.initials: GY
authors.lastname: Li
authors.forename: Jiang-Ning
authors.initials: JN
authors.lastname: Hu
authors.forename: Liang
authors.initials: L
authors.lastname: Tang
authors.forename: Rong
authors.initials: R
authors.lastname: Liu
authors.forename: Ya-Wei
authors.initials: YW
authors.lastname: Fan
authors.forename: Ze-Yuan
authors.initials: ZY
authors.lastname: Deng
mesh_terms: D000818:Animals; D002681:China; D005227:Fatty Acids / Q000032:analysis; D005399:Fishes / Q000378:metabolism*; D005618:Fresh Water; D060106:Lakes; D008460:Meat / Q000032:analysis; D010743:Phospholipids / Q000032:analysis*; D013045:Species Specificity; D014280:Triglycerides / Q000032:analysis*
chemical_list: D005227:Fatty Acids; D010743:Phospholipids; D014280:Triglycerides