Positional isomer composition of monounsaturated fatty acids from a lacustrine sediment |
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| Authors: | Hiromi Matsuda Tadashiro Koyama |
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| Institution: | Water Research Institute, Nagoya University, Chikusa-ku, Nagoya 464, Japan |
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| Abstract: | From the surface sediment of a eutrophic lake (Japan), the double bond position in the monounsaturated fatty acids (C15-C26) has been determined by combined gas chromatography-mass spectrometry of the methoxylated derivatives. The relative abundance of 11-octadecenoic acid, suggested to be of bacterial origin, is higher in the chloroform-methanol extract than the extract by saponification. |
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