Abstract
Lithocholic acid metabolites produced by the intestinal microflora of rats can be isolated from other endogenous lipids using Sephadex LH-20 column chromatography. Analyses of individual metabolites collected from the column by silica gel coated glass fiber paper chromatography result in the resolution of epimeric 3-hydroxy derivatives. In addition, glass fiber paper chromatography is more sensitive and requires less development time than conventional glass-coated thin-layer plates. Further confirmation of the identity of metabolites is achieved by gas-liquid chromatography, which separates both methyl and ethyl esters of lithocholic and isolithocholic acids.
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