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The effect of dietary partially hydrogenated marine oils on desaturation of fatty acids in rat liver microsomes

  • Published:
Lipids

An Erratum to this article was published on 01 June 1983

Abstract

The influence of dietary partially hydrogenated marine oils on distribution of phospholipid fatty acids in rat liver microsomes was studied with particular reference to the metabolism of linoleic acid. Five groups of weanling rats were fed diets containing 20% (w/w) peanut oil (PO), partially hydrogenated peanut oil (HPO), partially hydrogenated Norwegian capelin oil (HCO), partially hydrogenated herring oil (HHO), and rapeseed oil (RSO) for 10 weeks. The partially hydrogenated oils were supplemented with linoleic acid corresponding to 4.6 cal % in the diets. Accumulation of linoleic acid and reduced amount of total linoleic acid metabolites were observed in liver microsomal phospholipids from rats fed partially hydrogenated oils as compared to PO feeding. The most striking effects on the distribution of ω6-polyunsaturated fatty acids was obtained after feeding HHO, a marine oil with a moderate content oftrans fatty acids in comparison with HPO but rich in isomers of eicosenoic and docosenoic acids. Liver microsomal Δ6-as well as Δ6-desaturase activities as measured in vitro were reduced in rats kept on HHO as compared to PO dietary treatment. The results obtained suggest that the dietary influence of partially hydrogenated marine oils on the metabolism of linoleic acid might be better related to the intake of isomeric eicosenoic and docosenoic acids than to the total intake oftrans fatty acids.

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Authors and Affiliations

  1. Department of Clinical Chemistry, Huddinge University Hospital, Karolinska Institutet, Stockholm, Sweden

    Lennart Svensson

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  1. Lennart Svensson
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An erratum to this article is available at http://dx.doi.org/10.1007/BF02535430.

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Svensson, L. The effect of dietary partially hydrogenated marine oils on desaturation of fatty acids in rat liver microsomes. Lipids 18, 171–178 (1983). https://doi.org/10.1007/BF02534544

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  • DOI: https://doi.org/10.1007/BF02534544

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