Chemometric approaches for the zoning of Pinot Noir wines from the Casablanca valley, Chile

JORGE ANDRES SAAVEDRA TORRICO, CLAUDIA VIVIANA FUENTEALBA CARRASCO, L. Yáñez, M. Bravo, W. Quiroz, G. Lukacsy, J. M. Carot

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The Casablanca valley of Chile is one of the youngest wine producing areas of the country. This valley is of interest to national and international wine producers and consumers because of its unique climate. However, no systematic studies have been performed to evaluate differences in the climate inside the valley. In this work, the chemometric zoning of the Casablanca valley is assessed for the first time using samples of Pinot noir produced in two sub-zones. The samples were chemically characterised by UV-VIS spectroscopy, anthocyanin profiles and mineral element profiles. Data were analysed using the multivariate tools PCA, LDA, SIMCA and PLS-DA. The best results were obtained by combining all chemical data (R2 > 98%, Q2 ≥ 0.5). No differences were detected among the applied statistical procedures. Finally, the results of this preliminary survey yield promising scientific evidence of two existing sub-zones within the Casablanca valley, the "Zona Alta" and the "Zona Baja", in agreement with the previous opinion of oenologists.

Original languageEnglish
Pages (from-to)1842-1847
Number of pages6
JournalFood Chemistry
Volume127
Issue number4
DOIs
StatePublished - 15 Aug 2011

Keywords

  • Casablanca valley
  • Chemometric
  • Pinot noir
  • Zoning

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