title: Characterisation of minor components in vegetable oil by comprehensive gas chromatography with dual detection.
abstract: The profile of minor compounds, such as alcohols, sterols, free and alkyl fatty acids, waxes, etc., was investigated in different vegetable oils by a comprehensive gas chromatographic system, coupled with a simultaneous dual detection (flame ionisation detector and mass spectrometer) for quantitative and qualitative purposes. Such a system generated a unique two-dimensional chromatogram to be used as a chemical fingerprint. Multi-level information, due not only to a more "comprehensive" preparation technique, but also thanks to the exploitation of a more powerful and sensitive analytical determination allowed the extrapolation of diagnostic information from the minor components profile of different vegetable oils, along with their characteristic profile. Furthermore, an admixture of an extra virgin olive oil with a low amount of sunflower and palm oils was evaluated, attesting to the powerful diagnostic information provided by the proposed approach.
authors.affiliation: Dipartimento di Scienze degli Alimenti, University of Udine, via Sondrio 2A, I-33100 Udine, Italy. Electronic address: giopurcaro@gmail.com.
authors.forename: Giorgia
authors.initials: G
authors.lastname: Purcaro
authors.affiliation: Dipartimento di Scienze degli Alimenti, University of Udine, via Sondrio 2A, I-33100 Udine, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Barp
authors.affiliation: Dipartimento di Scienze del Farmaco e dei Prodotti per la Salute (SCIFAR), University of Messina, Viale Annunziata, 98168 Messina, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Beccaria
authors.affiliation: Dipartimento di Scienze degli Alimenti, University of Udine, via Sondrio 2A, I-33100 Udine, Italy.
authors.forename: Lanfranco S
authors.initials: LS
authors.lastname: Conte
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D005227:Fatty Acids / Q000032:analysis*; D005410:Flame Ionization / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D010938:Plant Oils / Q000032:analysis* / Q000737:chemistry*; D013261:Sterols / Q000032:analysis*
chemical_list: D005227:Fatty Acids; D010938:Plant Oils; D013261:Sterols
keywords: Authentication; Multidimensional comprehensive gas chromatography (GC×GC); Sterols; Vegetable oils minor compounds; Waxes