Dietary manipulation of the disappearance of trans-octadecenoates in rat tissues.
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概要
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The effects of dietary manipulations on the fate of trans-octadecenoates deposited in the tissues of rats were examined. Male rats were fed on a 15% fat diet containing trans-octadecenoic acids (46.6% of total fatty acids) for 35 days followed by various diets free of traps-fatty acids. After removal of trans-fatty acids from the diet, there were phased disappearances of traps-octadecenoates from the circulation; a rapid and broad reduction in one day and a slow and gradual reduction thereafter. The rate of the initial reduction in serum trans-octadecenoates was highest on a high fat (20%) diet in relation to low fat (1 or 5%) diets. However, the disappearance rate at the later stage was apparently the same among the various groups and trans-fatty acid contents in the serum declined to about 10% of the initial value in 2 weeks and thereafter. After 35 days, the concentration of traps-octadecenoates remaining in the adipose tissue was markedly lower in rats fed on a high protein (40%) diet. The effects of dietary fat type and cholesterol on the fate of serum trans-octadecenoates were virtually the same, but livers from rats fed on the cholesterol-free safflower oil diet contained more trans-fatty acids than those from rats fed on the corresponding olive oil diet. Thus, the amounts of traps-fatty acids stored in the tissues cannot be merely predicted from serum levels. It seems that both dietary fat and protein affect the metabolic rate of trans-octadecenoates in rats.
- 財団法人 学会誌刊行センターの論文
著者
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井手 隆
Laboratory of Nutrition Chemistry, Department of Food Science and Technology, Faculty of Agriculture
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菅野 道廣
Laboratory o f Nutrition Chemistry, Department of Food Science and Technology, Kyushu University Shool of Agriculture
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井手 隆
Laboratory of Nutrition Chemistry, Kyushu University School of Agriculture 46-09
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趙 英子
Laboratory of Nutrition Chemistry, Kyushu University School of Agriculture 46-09
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