title: Recognition and quantitation of cis-vaccenic and eicosenoic fatty acids in olive oils by 13C nuclear magnetic resonance spectroscopy.
abstract: The presence of 11-cis monoenoic fatty acids was detected in olive oil samples by means of 13C nuclear magnetic resonance spectroscopy, and the positional isomery on the glycerol backbone was derived. The 11-cis vaccenic and eicosenoic fatty acid resonances were recognized and the amounts of the fatty acids quantified. For comparison purposes, a quantitative analysis was also made by gas chromatography.
authors.affiliation: Dipartimento di Scienze Chimiche, Universita di Cagliari, Complesso Universitario di Monserrato, Cagliari, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Scano
authors.forename: M
authors.initials: M
authors.lastname: Casu
authors.forename: A
authors.initials: A
authors.lastname: Lai
authors.forename: G
authors.initials: G
authors.lastname: Saba
authors.forename: M A
authors.initials: MA
authors.lastname: Dessi
authors.forename: M
authors.initials: M
authors.lastname: Deiana
authors.forename: F P
authors.initials: FP
authors.lastname: Corongiu
authors.forename: G
authors.initials: G
authors.lastname: Bandino
mesh_terms: D002247:Carbon Isotopes; D005231:Fatty Acids, Unsaturated / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D009829:Oleic Acids / Q000032:analysis*; D000069463:Olive Oil; D010938:Plant Oils / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D005231:Fatty Acids, Unsaturated; D009829:Oleic Acids; D000069463:Olive Oil; D010938:Plant Oils; C050413:11-octadecenoic acid