| Title: | Differentiation of wines according to grape variety using multivariate analysis of comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometric detection data |
| Author(s): | Welke JE; Manfroi V; Zanus M; Lazzarotto M; Alcaraz Zini C; |
| Address: | "Instituto de Ciencia e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul, Avenida Bento Goncalves, 9500 Porto Alegre, RS, Brazil" |
| DOI: | 10.1016/j.foodchem.2013.06.100 |
| ISSN/ISBN: | 1873-7072 (Electronic) 0308-8146 (Linking) |
| Abstract: | "Headspace solid-phase microextraction (HS-SPME) combined with comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry detection (GCxGC/TOFMS) was used to analyse the volatiles in five types of wines elaborated with grapes of Cabernet Sauvignon, Merlot, Chardonnay, Sauvignon Blanc and Pinot Noir varieties. Fisher ratio, principal component analysis (PCA) and stepwise linear discriminant analysis (SLDA) were used to develop a discriminant model and, as a result, 12 volatile compounds enabled differentiation and classification of wines according to grape cultivars. A detailed examination of GCxGC/TOFMS data showed that the use of one-dimensional gas chromatography with a mass spectrometric detector (1D-GC/MS) would probably result in misidentification of some of these 12 compounds, as they showed partial coelution with other components in the first chromatographic dimension" |
| Keywords: | Discriminant Analysis Gas Chromatography-Mass Spectrometry/*methods Mass Spectrometry/*methods Multivariate Analysis Vitis/*chemistry/classification Volatile Organic Compounds/chemistry Wine/*analysis/classification Fisher ratio GCxGC/TOFMS Pca Volatile c; |
| Notes: | "MedlineWelke, Juliane Elisa Manfroi, Vitor Zanus, Mauro Lazzarotto, Marcelo Alcaraz Zini, Claudia eng Research Support, Non-U.S. Gov't Validation Study England 2013/09/03 Food Chem. 2013 Dec 15; 141(4):3897-905. doi: 10.1016/j.foodchem.2013.06.100. Epub 2013 Jul 2" |
