Journal of Nutrition

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Journal of Nutrition Vol. 84 No. 1 September 1964, pp. 15-19
Copyright © 1964 by American Society for Nutrition
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Effect of Linoleic Acid upon the Metabolism of Linolenic Acid1

Joseph J. Rahm and Ralph T. Holman

University of Minnesota, The Hormel Institute, Austin, Minnesota

Weanling rats were fed a fat-free diet supplemented with various ratios of corn and linseed oils to furnish a constant dietary level of linolenate at 1% of calories and levels of linoleate from 0.3 to 17.3% of calories. The fatty acid composition of the total liver lipids was analyzed by gas chromatography. Increasing amounts of dietary linoleate suppressed the levels of the 20:5, 22:5 and 22:6 metabolites of linolenic acid in the liver lipids. The level of dietary vitamin E had no effect upon this phenomenon. When the level of dietary linoleate was increased, the level of 22:4 in the liver lipids, as well as the other metabolites of linoleate, was shown to increase.

1 This investigation was supported in part by Public Health Service Research Grant no. AM 04524 from the National Institutes of Health, the Life Insurance Medical Research Fund and the National Dairy Council.

Manuscript received 25 April 1964.


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[Abstract] [Full Text] [PDF]


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