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Monoenoic fatty acids in human brain lipids: Isomer identification and distribution
Author(s) -
Johnson D. W.,
Beckman K.,
Fellenberg A. J.,
Robinson B. S.,
Poulos A.
Publication year - 1992
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02536174
Subject(s) - chemistry , carbon number , fatty acid , double bond , carbon chain , gas chromatography , structural isomer , carbon fibers , chromatography , stereochemistry , long chain , organic chemistry , alkyl , materials science , composite number , composite material , polymer science
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 C 16 to C 28 fatty acids contain predominantly two positional isomer series, the n−7 and n−9 cis 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.