Monoenoic fatty acids in human brain lipids: Isomer identification and distribution |
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Authors: | D W Johnson K Beckman A J Fellenberg B S Robinson A Poulos |
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Affiliation: | (1) the Department of Chemical Pathology, Adelaide Medical Centre for Women and Children, 72 King William Road, 5006 North Adelaide, South Australia, Australia |
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Abstract: | The carbon chain length distribution and the double bond positional isomer composition of the monoenoic fatty acids of the
lipids of total human brain tissue have been determined using gas chromatography and gas chromatography/mass spectrometry
of the fatty acid methyl and picolinyl esters. The even chain length monoenoic C16 to C28 fatty acids contain predominantly two positional isomer series, the n−7 and n−9cis homologues, whose relative proportion varies significantly with chain length. The odd chain length long-chain fatty acids
consist of n−8 and n−10 isomers, whereas the odd chain length very long-chain (more than 22 carbon) fatty acids are n−7 and
n−9 isomers. |
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