INQUISAL   20936
INSTITUTO DE QUIMICA DE SAN LUIS "DR. ROBERTO ANTONIO OLSINA"
Unidad Ejecutora - UE
artículos
Título:
Evaluation of Geographic Origin of Torrontés Wines by Chemometrics
Autor/es:
AZCARATE, S.M.; CANTARELLI, M.A.; MARCHEVSKY, E.J.; CAMIÑA, J.M.
Revista:
Journal of Food Research
Editorial:
Canadian Center of Science and Education 48
Referencias:
Año: 2013 vol. 2 p. 48 - 56
ISSN:
1927-0887
Resumen:
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.