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KMID : 0381019860190050304
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Korean Journal of Nutrition
1986 Volume.19 No. 5 p.304 ~ p.314
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Effect of Dietary Fat and Marginal Tocopherol Supplement on Plasma Lipid, Tocopherol Content and Fatty acid Composition of Rat Tissues
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Abstract
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To observe the effect of the different level of PUFA and marginal tocopherol supplement on HDL - chol, tissue tocopherol content and fatty acid composition, the rats were supplied either safflower oil or coconut oil with or without tocopherol supplement to the experimental diet.
Plasma tocopherol level was not greatly influenced by the different dietary fat and similar effect was observed in the liver but not in the adipose tissue. HDL - chol level was reduced in the high PUFA diet regardless of tocopherol content.
No effect by tocopherol supplement was observed in the fatty acid composition of liver and adipose tissue lipid in both dietary PUFA levels. There was also no increase in the content of tissue polyenoic acid by tocopherol in the high PUFA diet. Fatty acid composition of tissue lipid was rather more influenced by dietary fat. Lauric and myristic acid contents were higher in the low PUFA diet and linoleic acid and total polyenoic acid content were higher in the high PUFA diet.
With tocopherol supplement tocopherol /PUFA ratio of tissue was increased but the ratio of high PUFA diet was significantly lower than that of low PUFA diet. Marginal tocopherol supplement could not reduce the peroxidizability index of high PUFA diet.
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