AbstractEssential fatty acid deficient male Sprague Dawley rats were fed for 7 days a fat-free semi-synthetic diet supplemented with 10% by weight of different oil supplements. The oil supplement was a mixture of olive, safflower and linseed oils prepared at different proportions so the dietary n-9/n-6/n-3 ratios were approximate 2/1/1, 1/2/1, 1/1/2, and 1/1/1. The fatty acid compositions of plasma and liver lipids were then examined. Our results show polyunsaturated n-6 and n-3 fatty acids were selectively incorporated into plasma and liver phospholipids, and also into plasma cholesteryl esters. A preferential incorporation of n-6 over n-3 fatty acids into plasma cholesteryl esters and phospholipids was also observed.
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