Gas—liquid chromatography-mass spectrometry of hydroxylated octadecanols derived from hydroxylated stearic acids

A gas-liquid chromatographic-mass spectrometric method of determining the position of oxygen atoms on polyfunctional fatty acids has been explored. The method consists of reduction of keto, hydroperoxy, epoxy, and carboxylic acid groups with LiAlH4 to the corresponding alcohols; trimethylsilylation...

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Published in:Journal of lipid research 1969-03, Vol.10 (2), p.234-239
Main Authors: Esselman, Walter J., Clagett, C.O.
Format: Article
Language:English
Subjects:
autoxidation
hydroxy fatty acids
hydroxyoctadecanes
LiAlH4 reduction
trimethylsilyl derivatives
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description A gas-liquid chromatographic-mass spectrometric method of determining the position of oxygen atoms on polyfunctional fatty acids has been explored. The method consists of reduction of keto, hydroperoxy, epoxy, and carboxylic acid groups with LiAlH4 to the corresponding alcohols; trimethylsilylation with bis(trimethylsilyl)acetamide; and analysis by means of the combined gas-liquid chromatograph-mass spectrometer.The following compounds were analyzed: 9-mono-, 9,10-di-, 9,10,12-tri-, and 9,10,12,13-tetrahydroxystearic acids and the corresponding derivatives of octadecan-1-ol. The reduction products of 9,10-epoxystearic acid and a mixture of linoleic acid 9- and 13-hydroperoxides were also analyzed.The position of the oxygen function in the original molecule can be deduced rapidly and accurately.
doi_str_mv 10.1016/S0022-2275(20)42673-2
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source Elsevier ScienceDirect Journals
subjects autoxidation
hydroxy fatty acids
hydroxyoctadecanes
LiAlH4 reduction
trimethylsilyl derivatives
title Gas—liquid chromatography-mass spectrometry of hydroxylated octadecanols derived from hydroxylated stearic acids
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