title: Chemical profile of white wines produced from 'Greco bianco' grape variety in different Italian areas by nuclear magnetic resonance (NMR) and conventional physicochemical analyses.
abstract: In this study the characterization of white wines produced from the monovarietal 'Greco bianco' grape variety is presented for the first time. A total of 40 commercial wines, from two different southern Italian regions, Calabria and Campania, from the same grape variety and two different vintages, were investigated. The analyses were performed by means of chromatographic methods, conventional analyses, and nuclear magnetic resonance (NMR) spectroscopy. No differentiation was observed according to the year of production but a significant discrimination was achieved using principal component analysis (PCA) and partial least squares-discriminant analysis (PLS-DA). In particular, PLS-DA allowed the selection of compounds (total acidity; citric, malic, succinic, and lactic acids; total polyphenol index; glucose and proline/arginine ratio) useful for differentiating the studied wines on the basis of geographical origin.
authors.affiliation: Dipartimento di Biologia, DBAF, Università degli Studi della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy.
authors.forename: Marisa
authors.initials: M
authors.lastname: Caruso
authors.forename: Fernanda
authors.initials: F
authors.lastname: Galgano
authors.forename: Maria Antonietta
authors.initials: MA
authors.lastname: Castiglione Morelli
authors.forename: Licia
authors.initials: L
authors.lastname: Viggiani
authors.forename: Livio
authors.initials: L
authors.lastname: Lencioni
authors.forename: Barbara
authors.initials: B
authors.lastname: Giussani
authors.forename: Fabio
authors.initials: F
authors.lastname: Favati
mesh_terms: D055598:Chemical Phenomena; D002623:Chemistry Techniques, Analytical; D007558:Italy; D009682:Magnetic Resonance Spectroscopy; D025341:Principal Component Analysis; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*