Discrimination between Shiraz Wines from Different Australian Regions: The Role of Spectroscopy and Chemometrics

This study reports the use of UV–visible (UV–vis), near-infrared (NIR), and midinfrared (MIR) spectroscopy combined with chemometrics to discriminate among Shiraz wines produced in five Australian regions. In total, 98 commercial Shiraz samples (vintage 2006) were analyzed using UV–vis, NIR, and MIR...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2011-09, Vol.59 (18), p.10356-10360
Main Authors: Riovanto, Roberto, Cynkar, Wies U, Berzaghi, Paolo, Cozzolino, Daniel
Format: Article
Language:English
Subjects:
Australia
Biological and medical sciences
chemometrics
discriminant analysis
Fermented food industries
Food Chemistry/Biochemistry
Food industries
Fundamental and applied biological sciences. Psychology
infrared spectroscopy
Multivariate Analysis
principal component analysis
spectral analysis
Spectrophotometry
Spectrophotometry, Infrared
Tannins - analysis
Wine - analysis
Wine - classification
wines
Wines and vinegars
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Summary:This study reports the use of UV–visible (UV–vis), near-infrared (NIR), and midinfrared (MIR) spectroscopy combined with chemometrics to discriminate among Shiraz wines produced in five Australian regions. In total, 98 commercial Shiraz samples (vintage 2006) were analyzed using UV–vis, NIR, and MIR wavelength regions. Spectral data were interpreted using principal component analysis (PCA), linear discriminant analysis (LDA), and soft independent model of class analogy (SIMCA) to classify the wine samples according to region. The results indicated that wine samples from Western Australia and Coonawarra can be separated from the other wines based on their MIR spectra. Classification results based on MIR spectra also indicated that LDA achieved 73% overall correct classification, while SIMCA 95.3%. This study demonstrated that IR spectroscopy combined with chemometric methods can be a useful tool for wine region discrimination.
ISSN:0021-8561
1520-5118
DOI:10.1021/jf202578f