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J Chromatogr A

Title:		Brand-dependent volatile fingerprinting of Italian wines from Valpolicella
Author(s):		Dall'Asta C; Cirlini M; Morini E; Galaverna G;
Address:		"Department of Organic and Industrial Chemistry, University of Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy"
Journal Title:		J Chromatogr A
Year:		2011
Volume:		20110818
Issue:		42
Page Number:		7557 - 7565
DOI:		10.1016/j.chroma.2011.08.042
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		"Head-space solid-phase microextraction (HS-SPME) coupled to gas-chromatography-mass spectrometry was developed and applied to obtain the volatile aromatic fingerprints of three typical Italian wines, Valpolicella, Amarone and Recioto, all produced in the restricted geographical area of Valpolicella (Veneto, Italy) with the same grape cultivars within the regulations of a rigid disciplinary of production. Differences between the three typologies are mainly linked to the different withering times to which grapes are subjected before vinification, which strongly influences the concentration and the development of volatile aroma compounds. A total of 22 different wines (7 Valpolicella, 10 Amarone and 5 Recioto) were characterised in terms of aromatic volatile profile with the aim to distinguish the different products and to evaluate the possibility to differentiate the same product from different brands. For the chemometric evaluation of the data one-way analysis of variance (ANOVA), principal component analysis (PCA) and hierarchical cluster analysis (HCA) were tested. All the chemometric tools employed allow to differentiate between the three products. More intriguing is the ability of the chemometric approach to differentiate between the same product (Amarone, Recioto) from different winery, thus showing the potential of this approach to characterize the brand-dependent typicality of wines, which is usually related to subtle technological differences which nevertheless have strong influences on the organoleptic characteristics of the products"
Keywords:		Analysis of Variance Cluster Analysis Gas Chromatography-Mass Spectrometry Italy Odorants/*analysis Principal Component Analysis Reproducibility of Results Solid Phase Microextraction Volatile Organic Compounds/*analysis *Wine/analysis/classification;
Notes:		"MedlineDall'Asta, C Cirlini, M Morini, E Galaverna, G eng Research Support, Non-U.S. Gov't Netherlands 2011/09/16 J Chromatogr A. 2011 Oct 21; 1218(42):7557-65. doi: 10.1016/j.chroma.2011.08.042. Epub 2011 Aug 18"