title: Characterization and classification of Western Greek olive oils according to cultivar and geographical origin based on volatile compounds.
abstract: The aim of the present study was to characterize and classify olive oils from Western Greece according to cultivar and geographical origin, based on volatile compound composition, by means of Linear Discriminant Analysis. A total of 51 olive oil samples were collected during the harvesting period 2007-2008 from six regions of Western Greece and from six local cultivars. Forty-five of the samples were characterized as extra virgin olive oils. The analysis of volatile compounds was performed by Headspace Solid Phase Microextraction-Gas Chromatography/Mass Spectrometry (HS-SPME-GC/MS). Fifty-three (53) different volatile compounds were tentatively identified and semi-quantified. Using selected volatile compound composition data (selection was based on the application of ANOVA to total volatiles to determine those variables showing substantial differences among samples of different geographical origin/cultivar), the olive oil samples were satisfactorily classified according to geographical origin (87.2%) and cultivar (74%).
authors.affiliation: Laboratory of Food Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
authors.forename: Eirini
authors.initials: E
authors.lastname: Pouliarekou
authors.forename: Anastasia
authors.initials: A
authors.lastname: Badeka
authors.forename: Maria
authors.initials: M
authors.lastname: Tasioula-Margari
authors.forename: Stavros
authors.initials: S
authors.lastname: Kontakos
authors.forename: Francesco
authors.initials: F
authors.lastname: Longobardi
authors.forename: Michael G
authors.initials: MG
authors.lastname: Kontominas
mesh_terms: D000704:Analysis of Variance; D016002:Discriminant Analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006115:Greece; D000069463:Olive Oil; D010938:Plant Oils / Q000032:analysis / Q000737:chemistry / Q000145:classification; D052617:Solid Phase Microextraction / Q000379:methods; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D000069463:Olive Oil; D010938:Plant Oils; D055549:Volatile Organic Compounds