title: Artificial nose, NIR and UV-visible spectroscopy for the characterisation of the PDO Chianti Classico olive oil.
abstract: An authentication study of the Italian PDO (Protected Designation of Origin) olive oil Chianti Classico, based on artificial nose, near-infrared and UV-visible spectroscopy, with a set of samples representative of the whole Chianti Classico production area and a considerable number of samples from other Italian PDO regions was performed. The signals provided by the three analytical techniques were used both individually and jointly, after fusion of the respective variables, in order to build a model for the Chianti Classico PDO olive oil. Different signal pre-treatments were performed in order to investigate their importance and their effects in enhancing and extracting information from experimental data, correcting backgrounds or removing baseline variations. Stepwise-Linear Discriminant Analysis (STEP-LDA) was used as a feature selection technique and, afterward, Linear Discriminant Analysis (LDA) and the class-modelling technique Quadratic Discriminant Analysis-UNEQual dispersed classes (QDA-UNEQ) were applied to sub-sets of selected variables, in order to obtain efficient models capable of characterising the extra virgin olive oils produced in the Chianti Classico PDO area.
authors.affiliation: University of Genoa, Department of Pharmacy, Via Brigata Salerno 13, I-16147 Genoa, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Forina
authors.affiliation: University of Genoa, Department of Pharmacy, Via Brigata Salerno 13, I-16147 Genoa, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Oliveri
authors.affiliation: University of Genoa, Department of Pharmacy, Via Brigata Salerno 13, I-16147 Genoa, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Bagnasco
authors.affiliation: University of Genoa, Department of Pharmacy, Via Brigata Salerno 13, I-16147 Genoa, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Simonetti
authors.affiliation: University of Genoa, Department of Pharmacy, Via Brigata Salerno 13, I-16147 Genoa, Italy.
authors.forename: M C
authors.initials: MC
authors.lastname: Casolino
authors.affiliation: Consorzio Olio DOP Chianti Classico, Via Scopeti 155, I-50026 San Casciano in Val di Pesa, Florence, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Nizzi Grifi
authors.affiliation: University of Genoa, Department of Pharmacy, Via Brigata Salerno 13, I-16147 Genoa, Italy. Electronic address: monica@difar.unige.it.
authors.forename: M
authors.initials: M
authors.lastname: Casale
mesh_terms: D032701:Biomimetics / Q000379:methods*; D005607:Fraud / Q000517:prevention & control; D015233:Models, Statistical; D000069463:Olive Oil / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D019265:Spectroscopy, Near-Infrared / Q000379:methods*
chemical_list: D000069463:Olive Oil
keywords: Artificial nose; Chianti Classico PDO olive oil; Data fusion; LDA; Near-infrared and UV–visible spectroscopy; QDA-UNEQ; Signal pre-treatments