Journal of Lipid Research, Vol. 9, 52-57, January 1968
Copyright © 1968 by Lipid Research, Inc.

Quantitative gas-liquid chromatographic analysis of rodent milk triglycerides

Stuart Smith , Rodney Watts , and R. Dils

Department of Medical Biochemistry and Pharmacology, Biology Building, University of Birmingham, Birmingham, England

A comparison has been made of the milk and adipose tissue triglycerides of rabbits and guinea pigs provided with one diet and of rats and mice provided with another. Both intact triglycerides and component fatty acids were analyzed by gas-liquid chromatography. Good correlation of the data obtained by the two techniques was obtained by calculating the average chain length of the fatty acid moieties.

Little difference was found in the triglyceride composition of the adipose tissue of the different species. However, wide variation in the triglyceride composition of the milk was found between the species: the average fatty acid chain length in milk was 11.7 for rabbits, 14.2 for rats, 15.3 for mice, and 17.2 for guinea pigs. The corresponding values for adipose tissue were in the range 16.9-17.4 in all animals. The significance of enzymes that synthesize short-chain fatty acids in mammary gland is discussed.

Supplementary key words gas-liquid chromatography • triglycerides • fatty acids • rodent • milk • adipose tissue • diet

Submitted on May 17, 1967
Accepted on August 29, 1967

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