Comparison of palmolein and olive oil: effects on plasma lipids and vitamin E in young adults.
Twenty-one healthy normocholesterolemic young adults, men and women, completed a randomized 30-d/30-d crossover comparison of the effect of palmolein and olive oil on plasma lipids. The subjects were free-living volunteers who changed to low-fat diets to which one of the test oils was added (used as a spread, for baking, or for frying) in turn. Complete food records were kept throughout: the test oils were compared at 17% of total dietary energy. Under the conditions of this experiment plasma total and low-density-lipoprotein (LDL) cholesterol were almost identical with the two oils, so that when the palmitic acid (16:0) in palm oil replaced oleic acid (18:1) in olive oil the expected increase in LDL cholesterol was not seen. These results indicate that 16:0, though saturated, is not always a plasma cholesterol-raising fatty acid. Palmolein is rich in vitamin E, alpha-tocopherol, and especially tocotrienols, but the latter were barely detectable in plasma.
Choudhury
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Department of Biochemistry, University of Sydney, New South Wales, Australia.
Tan
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L
Truswell
A S
AS
D000328:Adult; D008078:Cholesterol, LDL / Q000097:blood; D018592:Cross-Over Studies; D018752:Diet, Fat-Restricted; D004042:Dietary Fats, Unsaturated / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008055:Lipids / Q000097:blood*; D008297:Male; D000069463:Olive Oil; D000073878:Palm Oil; D010349:Patient Compliance; D010938:Plant Oils / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology*; D013997:Time Factors; D014810:Vitamin E / Q000097:blood*
D008078:Cholesterol, LDL; D004042:Dietary Fats, Unsaturated; D008055:Lipids; D000069463:Olive Oil; D010938:Plant Oils; D014810:Vitamin E; D000073878:Palm Oil