Abstract
AbstractThe biohydrogenation of unsaturated fatty acids and the preferential absorption of unsaturated fatty acids over long chain saturated fatty acids from the gut have been investigated to find the origin of the high saturated fatty acid content of the facal lipids of rats fed soybean oil. Label from dietary (1‐14C)‐linoleic acid was recovered in the saturated and monounsaturated fatty acids of the fecal lipid. However, when (9,10‐3H)‐stearic acid and (1‐14C)‐linoleic acid were fed together, the isotope ratio (3H/14C) of the fecal lipid was 1.9 times that of the diet. It is concluded that both processes occur.
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