Incorporation of Dietary Elaidic Acid in Tissues and Effects on Fatty Acid Distribution

Abstract
The incorporation of dietary elaidic acid into rat tissue and its effect on fatty acid distribution was studied with the use of infrared spectrophotometry and gas-liquid chromatography. Elaidic acid was incorporated into all of the 3 types of tissue analyzed, epididymal fat pad, liver mitochondria, and erythrocyte stroma. The patterns of tissue distribution of elaidic acid and other fatty acids were different in the 3 tissues; depot fat resembled the dietary lipid more closely than did erythrocyte or mitochondrial lipid. Traces of trans isomers of unsaturated fatty acids were present in tissue from rats receiving no detectable amount of these acids in the diet.