Positional Distribution of Fatty Acids in Triacylglycerols and Phospholipids from Fillets of Atlantic Salmon (Salmo Salar) Fed Vegetable and Fish Oil Blends

被引:44
作者
Ruiz-Lopez, Noemi [1 ]
Stubhaug, Ingunn [2 ]
Ipharraguerre, Ignacio [3 ]
Rimbach, Gerald [4 ]
Menoyo, David [1 ]
机构
[1] Tech Univ Madrid, Sch Agr Engn, Dept Agr Prod, Madrid 28040, Spain
[2] Skretting Aquaculture Res Ctr ARC, N-4001 Stavanger, Norway
[3] Lucta SA, Barcelona 08170, Spain
[4] Univ Kiel, Inst Human Nutr & Food Sci, D-24118 Kiel, Germany
关键词
PANCREATIC LIPASE; REPLACEMENT; N-3; GROWTH; L; TRIGLYCERIDES; ACCUMULATION; TISSUE; EPA;
D O I
10.3390/md13074255
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
The nutritional and functional characteristics of dietary fat are related to the fatty acid (FA) composition and its positional distribution in the triacylglycerol (TAG) fraction. Atlantic salmon is an important source of healthy long chain omega 3 FA (particularly, eicosapentaenoic (EPA) and docoxahexaenoic (DHA) acids). However, the impact of lipid sources in salmon feeds on the regiospecificity of FA in the fish TAG remains to be explored. The present study determines the effect of feeding salmon with blends of palm, rapeseed, and fish oil, providing two different EPA + DHA concentrations (high: H-ED 10.3% and low: L-ED 4.6%) on the fillet lipid class composition and the positional distribution of FA in TAG and phospholipids. The regiospecific analysis of fillet TAG showed that around 50% of the EPA and around 80% of DHA was located in the sn-2 position. The positional distribution of FA in phosphatidylcholine (PC), showed that around 80% of the EPA and around 90% of DHA were located in the sn-2. Fish fed the vegetable-rich diets showed higher EPA in the sn-2 position in PC (77% vs. 83% in the H-ED and L-ED diets, respectively) but similar DHA concentrations. It is concluded that feeding salmon with different EPA + DHA concentrations does not affect their positional distribution in the fillet TAG.
引用
收藏
页码:4255 / 4269
页数:15
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