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  • Title: Potential for enhancing the nutritional properties of milk fat.
    Author: Ney DM.
    Journal: J Dairy Sci; 1991 Nov; 74(11):4002-12. PubMed ID: 1757639.
    Abstract:
    Milk fat has been identified as a hypercholesterolemic fat because it contains cholesterol and is primarily saturated. However, different types of dietary saturated fats do not have equivalent effects on plasma cholesterol levels relevant to ingestion of polyunsaturated fats. Research suggests that the hypercholesterolemic effect of saturated fats in human diets is largely due to 12, 14, and 16 carbon chain length fatty acids. Evidence also suggests that stearic acid (C18:0) is as effective as oleic acid (C18:ln-9) in lowering plasma cholesterol levels when either replaces palmitic acid (C16:0) in the diet of men. Milk fat has a unique fatty acid profile with approximately 10% short- and medium-chain length saturated fatty acids (less than 12 carbons) and 35% of total fatty acids from stearic and oleic acids. The contribution of milk products to fat and cholesterol intake in the typical American diet is less than that provided by other animal products. This paper will review the recommendations of the National Cholesterol Education Program, the effects of milk fat ingestion on blood cholesterol, and the rationale and feasibility of three approaches to modifying the lipid composition of milk fat.
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