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ItalianoComprehensive two-dimensional gas chromatography (GCxGC) has emerged as a powerful analytical technique for unraveling the volatile composition of complex matrices. This work will present three applications of GCxGC Tof-MS to the oenological field, aimed to identify novel biomarkers to be used in the quality control process of the wine industry. Comprehensive mapping of volatile compounds was conducted in a large sample of 70 sparkling wines, produced by 48 different wineries across 6 vintages and representative of the two main production areas for premium Italian sparkling wines (Franciacorta (FC) and Trentodoc (TN)), using HS-SPME followed by GCxGC-Tof-MS and multivariate analysis. Selection and identification of 196 putative biomarkers allowed clear separation of sparkling wines from FC and TN. A spatial investigation of Shiraz wines fermented in triplicates from grapes collected from climatically diverse (warm/hot versus cold/temperate) regions of Australia (New South Wales) was made using HS-SPME followed by GCxGC-Tof-MS. Wine volatile profiles from warm/hot and cool/temperate climate could be distinguished according to the first two principal components. Wines from cool/temperate climate were characterised by higher levels of several terpenes such as alpha terpineol, linalool oxide, citronellol acetate, 1-p-menthen-9-al, cis-rose oxide, ho-trienol) and sesquiterpenes, whereas trend for norispoprenoids was less consistent. Higher TDN levels in wines from warm/hot climate were observed. Volatile composition of wines from four grape cultivars was investigated with GCxGC Tof-MS in association with multivariate analyses. Eighteen samples of Müller Thurgau, 48 samples of Pinot Gris, 36 samples of Chardonnay and 18 samples of Gewürztraminer were analyzed. A clear varietal differentiation according to the wine volatiles was affirmed by PCA and potential cultivar-specific biomarkers were identified.
| Citation: | Carlin, S.; Vrhovsek, U.; Suklje, K.; Mattivi, F. (2016). Comprehensive two-dimensional gas chromatography coupled with Tof-MS, a very useful tool for analysis of wines. In: XI Italian congress of food chemistry, Cagliari, 4-7 ottobre 2016: 57. ISBN: 9788886208796. handle: http://hdl.handle.net/10449/36405 |
| Internal authors: | |
| Organization unit: | Department of Food Quality and Nutrition # CRI |
| Authors: | Carlin, S.; Vrhovsek, U.; Suklje, K.; Mattivi, F. |
| Title: | Comprehensive two-dimensional gas chromatography coupled with Tof-MS, a very useful tool for analysis of wines |
| Issue Date: | 2016 |
| Scientific Disciplinary Area: | Settore CHIM/10 - Chimica Degli Alimenti |
| Keywords ENG: | SPME GCXGC TOF-MS Wine Volatile compounds |
| Keywords ITA: | SPME GCXGC TOF-MS Vino Aroma |
| Language: | English Italian |
| Nature of content: | Abstract in Atti di convegno/Conference abstract |
| Appears in Collections: | 03 - Conference object |
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| abstract chimali 03-nov-2016 11-50-59.pdf | N/A | Tutti i diritti riservati (All rights reserved) | Utenti riconosciuti Request a copy |
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