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Mar. Drugs 2015, 13(7), 4255-4269; doi:10.3390/md13074255

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

1
Department of Agricultural Production, School of Agricultural Engineering, Technical University of Madrid, 28040 Madrid, Spain
2
Skretting Aquaculture Research Centre (ARC), P.O. Box 48, N-4001 Stavanger, Norway
3
Lucta S.A., Can Parellada 28, 08170, Montornés del Vallés, Barcelona, Spain
4
Institute of Human Nutrition and Food Science, University of Kiel, Hermann-Rodewald-Straße 6-8, D-24118 Kiel, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Gilles Barnathan
Received: 5 June 2015 / Revised: 29 June 2015 / Accepted: 30 June 2015 / Published: 10 July 2015
(This article belongs to the Special Issue Marine Lipids)
View Full-Text   |   Download PDF [537 KB, uploaded 15 July 2015]   |  

Abstract

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. View Full-Text
Keywords: salmon (Salmo salar); omega 3 fatty acids; positional distribution; functional foods salmon (Salmo salar); omega 3 fatty acids; positional distribution; functional foods
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ruiz-Lopez, N.; Stubhaug, I.; Ipharraguerre, I.; Rimbach, G.; Menoyo, D. Positional Distribution of Fatty Acids in Triacylglycerols and Phospholipids from Fillets of Atlantic Salmon (Salmo Salar) Fed Vegetable and Fish Oil Blends. Mar. Drugs 2015, 13, 4255-4269.

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