title: Occurrence and chemical structure of nonmethylene-interrupted dienoic fatty acids in American oyster Crassostrea virginica.
abstract: The American oyster, Crassostrea virginica, was found to contain structurally homologous nonmethylene-interrupted dienoic (NMID) fatty acids. The major C20 and C22 nonmethylene-interrupted dienoic fatty acid isomers were shown to occur as two pairs of homologues 5,13-20:2 with 7,15-22:2 and 5,11-20:2 with 7,13-22:2. A combination of analytical procedures was required for conclusive structure determination.
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D005231:Fatty Acids, Unsaturated / Q000032:analysis* / Q000302:isolation & purification; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010125:Ostreidae / Q000032:analysis*; D010084:Oxidation-Reduction; D010126:Ozone; D013055:Spectrophotometry, Infrared
chemical_list: D005231:Fatty Acids, Unsaturated; D010126:Ozone