title: Occurrence of novel nonmethylene-interrupted C24 polyenoic fatty acids in female gonad lipids of the limpet Cellana grata.
abstract: The occurrence of positional isomers of minor C(24) unsaturated fatty acids in female gonad lipids of the limpet Cellana grata was clarified by gas chromatography-mass spectrometry of the combination of their 4,4-dimethyloxazoline and picolinyl ester derivatives. In this study, in addition to 5,9-24:2, 9,15-24:2, 5,9,15-24:3, and 5,9,17-24:3, previously identified, 24:4n-6, 24:5n-3, and four novel nonmethylene-interrupted fatty acids, 9,17-24:2, 9,15,18-24:3, 5,9,15,18-24:4, and 5,9,15,18,21-24:5, were newly recognized. All C(24) unsaturated fatty acids detected were present only in triacylglycerols.
authors.affiliation: Bioscience Laboratory, Miyako College, Iwate Prefectural University, Japan. ajoe@iwate-pu.ac.jp
authors.forename: Hideki
authors.initials: H
authors.lastname: Kawashima
authors.forename: Masao
authors.initials: M
authors.lastname: Ohnishi
mesh_terms: D000818:Animals; D004952:Esters; D005231:Fatty Acids, Unsaturated / Q000032:analysis*; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D049851:Gastropoda / Q000737:chemistry*; D006066:Gonads / Q000737:chemistry*; D008055:Lipids / Q000032:analysis*; D013237:Stereoisomerism; D014280:Triglycerides / Q000032:analysis
chemical_list: D004952:Esters; D005231:Fatty Acids, Unsaturated; D008055:Lipids; D014280:Triglycerides