Abstract
AbstractThe objective of this study was to define the composition of endogenous glycerides of swine adipose tissues as a basis for further studies on the influences of diet and other environmental factors. It was also hoped that the endogenous triglyceride composition might suggest a fresh approach to the problem of the biosynthetic pathway of natural triglyceride mixtures. Swine were fed a fat‐free diet from the age of 17 days to 5 months, and the triglycerides of their mesenteric, perirenal and inner and outer back adipose tissues analyzed by silver ion thin layer chromatography and gas liquid chromatography. Four silver ion fractions were found, S3, S2M, SM2 and M3 (S, saturated; M, monounsaturated fatty acids). Corresponding fractions from different adipose tissues had identical fatty acid composition. The fatty acid compositions of the 2 position of the fractions were also identical. However, the fatty acid composition of the unfractionated triglycerides varied from tissue to tissue. It is concluded therefore, that the various adipose tissues of swine contain the same triglycerides in varying concentrations. Stearic and oleic acids were located mainly in the combined 1 and 3 positions. Myristic, palmitoleic and palmitic were in the 2 position, with almost 90% of the saturated acids being palmitic. This specific distribution of the major fatty acids can explain the marked simplicity of swine endogenous triglycerides.
Published Version
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