Effect of feeding strawberry, raspberry and rapeseed oil in rats’ diet on the fatty acid profile of muscle tissue

Abstract

Currently, alternative plant oils with pro-health properties are sought. The aim of the present study was to investigate the effect of feeding strawberry, raspberry and rapeseed oils in rats’ diet on the fatty acid profile of muscle tissue. Adult rats were randomly divided into 4 groups (n=7) and fed with the addition of rapeseed, raspberry or strawberry seed oil, respectively, or control group. After a 6-week treatment period, the fatty acid profile in m. latisssimus dorsi, was analyzed using gas chromatography. The dietary strawberry or raspberry seed oil led to a significant increase in C-18:2 n-6 ad C-18:3 n-3 level in muscle fat when compared to control group. At the same time, in the group receiving raspberry oil, an unfavorable phenomenon of lowering the EPA content was observed, while a tendency towards a decrease in DHA level was observed in groups supplemented with both raspberry and strawberry oil. Both oils as a source of PUFA n-3 and n-6, increased ALA n-3 and LA n-6 fatty acids in latissimus dorsi muscle, but due to different activity of enzymes taking apart in conversion of polyunsaturated fatty acids to their long chain derivatives in rats, the research on pig model would be advisable.

Yolk Fatty Acid Profile and Amino Acid Composition in Eggs from Hens Supplemented with ß-Hydroxy-ß-Methylbutyrate

“…Additionally, these supplements raised MUFA and lowered PUFA content in leg muscle, resulting in a decreased PUFA-to-SFA ratio. This aligns with findings in studies on animals other than poultry, suggesting the potential for nutritional modifications of fatty acids in animal products [57][58][59][60]. Changes in the muscle fatty acid metabolism might extend to affect the fatty acid profiles of eggs, although this has not been directly confirmed in either of those studies.…”