The effect of combining linseed oil and sesamin on the fatty acid composition in white muscle and on expression of lipid-related genes in white muscle and liver of rainbow trout ( Oncorhynchus mykiss )

摘要: Sesamin (S) is a known lipid modulator and has been shown to increase the conversion of α-linolenic acid (ALA) docosahexaenoic in rainbow trout (Oncorhynchus mykiss) fed vegetable oil mixtures including linseed oil. In this study, we evaluated effects S supplementation oil-based diets, content α- γ-tocopherols, fatty (FA) composition, as well gene expression lipid-related genes. Fish with an average weight 36.5 g were different combinations commercial (LO), purified triacylglycerols (TAG) polar fraction removed mixed linseed-sunflower (6:4 v/v) (MO). was added at 0.58 100−1g feed fish for period 58 days. Expression PPARα downregulated white muscle containing diets (P < 0.05). The PPARβ1A not affected by except where TAG used. declined significantly + group 0.05), which indicates that some minor compounds might suppress effect on PPARβ1A. PPARγ(long) LO MO β-oxidation-related genes CPT1 ACO upregulated oils compared decreased percentage ALA increased desaturation index levels suggest may biosynthesis highly unsaturated FA trout.