Evaluation of Geographic Origin of Torrontés Wines by Chemometrics

S.M. AZCARATE; M.A. CANTARELLI; E.J. MARCHEVSKY; J.M. CAMIÑA

JOURNAL OF FOOD RESEARCH

CANADIAN CENTER OF SCIENCE AND EDUCATION

Lugar: Toronto; Año: 2013 vol. 2 p. 48 - 56

1927-0887

This work discusses the determination of the provenance of commercial Torrontés wines from different Argentinean provinces (Mendoza, San Juan, Salta and Rio Negro) by the use of UV-vis spectroscopy and chemometric techniques. In order to find classification models, wines (n = 80) were analyzed using UV-Vis region of the electromagnetic spectrum. Principal component analysis (PCA), linear discriminant analysis (LDA) and partial least squares discriminant analysis (PLS-DA) were used to classify Torrontés wines according to their geographical origin. Classification rates obtained were highly satisfactory. The PLS-DA and LDA calibration models showed that 100% of the Mendoza, San Juan, Salta and Rio Negro Torrontés wine samples had been correctly classified. These results demonstrate the potential use of UV spectroscopy with chemometric data analysis as a method to classify Torrontés wines according to their geographical origin, a procedure which requires low-cost equipment and short-time analysis in comparison with other techniques.