Abstract
ABSTRACTThe objective of the present study was to compare the effects of feeding low‐fat diets to adolescent boys based on safflower oil, corn oil, or peanut oil on the fatty acid composition of several blood lipid fractions. Boys (aged 13–16 yr) were divided into three groups of 4–5 subjects each and fed weighed controlled diets containing 20% of calories from the test fats for 22 days. Fasting blood samples were drawn the morning of the first day of the study and the morning following the last day of controlled feeding. Blood serum was fractionated by column chromatography into phospholipid, cholesterol ester, triglyceride, and free fatty acid fractions. These were methylated and fatty acid composition determined by gas chromatography. In general in all fractions, feeding of corn oil or safflower oil resulted in increases in linoleic (C2=18) acid content and increases in oleic (C2=18) acid content. Peanut oil feeding resulted in decrease or little change in linoleic acid content and increase in oleic acid content. Results of this study suggest that peanut oil would be better classified with such animal fats as butter oil and beef tallow in human metabolic response than with such vegetable oils as corn oil or safflower oil.
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