2026-04-17T04:08:42Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1692292025-12-05T14:51:36Zcom_2072_1057col_2072_478917col_2072_478924

00925njm 22002777a 4500 dc Melucci, Dora author Bendini, Alessandra author Tesini, Federica author Barbieri, Sara author Zappi, Alessandro author Vichi, S. (Stefania) author Conte, Lanfranco author Gallina Toschi, Tullia author 2020-07-22T06:53:55Z 2020-07-22T06:53:55Z 2016 2020-07-22T06:53:55Z At present, the geographical origin of extra virgin olive oils can be ensured by documented traceability, although chemical analysis may add information that is useful for possible confirmation. This preliminary study investigated the effectiveness of flash gas chromatography electronic nose and multivariate data analysis to perform rapid screening of commercial extra virgin olive oils characterized by a different geographical origin declared in the label. A comparison with solid phase micro extraction coupled to gas chromatography mass spectrometry was also performed. The new method is suitable to verify the geographic origin of extra virgin olive oils based on principal components analysis and discriminant analysis applied to the volatile profile of the headspace as a fingerprint. The selected variables were suitable in discriminating between '100% Italian' and 'non-100% Italian' oils. Partial least squares discriminant analysis also allowed prediction of the degree of membership of unknown samples to the classes examined. Oli d'oliva Traçabilitat Denominacions d'origen Cromatografia de gasos Olive oil Traceability Marks of origin Gas chromatography Rapid direct analysis to discriminate geographic origin of extra virgin olive oils by flash gas chromatography electronic nose and chemometrics