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Journal of Lipid Research, Vol. 3, 165-169, April 1962
Copyright © 1962 by Lipid Research, Inc.

The simultaneous determination of glycerol and fatty acids in glycerides by gas-liquid chromatography

Lloyd A. Horrocks and David G. Cornwell

Department of Physiological Chemistry, The Ohio State University, Columbus, Ohio, and Department of Neurochemistry, Cleveland Psychiatric Institute and Hospital, Cleveland 9, Ohio

The conversion of glyceryl esters to derivatives suitable for gas-liquid chromatography was accomplished by hydrogenolysis with lithium aluminum hydride followed by direct acetylation of lithium aluminum alcoholates with acetic anhydride. Fatty acids and glycerol were converted quantitatively to their corresponding acetate esters by this procedure. Gas-liquid and thin-layer chromatographic procedures were used to demonstrate quantitative acetylation. Acetate esters of fatty alcohols and glycerol were recovered together and analyzed by gas-liquid chromatography to give a simultaneous estimation of fatty acid composition and the ester—glycerol ratio. Quantitative results were obtained for mono-, di-, and triglycerides.

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