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J Agric Food Chem

Title:		Characterization and differentiation of sherry brandies using their aromatic profile
Author(s):		Duran Guerrero E; Cejudo Bastante MJ; Castro Mejias R; Natera Marin R; Garcia Barroso C;
Address:		"Analytical Chemistry Department, Faculty of Sciences, University of Cadiz, Post Office Box 40, E-11510, Pol. Rio San Pedro, Puerto Real, Cadiz, Spain"
Journal Title:		J Agric Food Chem
Year:		2011
Volume:		20110223
Issue:		6
Page Number:		2410 - 2415
DOI:		10.1021/jf104409n
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Aroma compounds of 48 Sherry brandies have been identified and quantified by the stir bar sorptive extraction method coupled to gas chromatography-mass spectrometry (SBSE-GC/MS). Analysis of variance and multivariate analysis techniques have been used to classify these brandy samples according to the commercial category (Solera brandy, Solera Reserva brandy, and Solera Gran Reserva brandy). From an univariate point of view (analysis of variance), several of the volatile compounds considered showed significant differences. Principal component analysis, using the global data matrix, showed that only the Solera brandy samples, with the shortest aging in wood, were well-differentiated from the others. Partial least-squares discriminant analysis (PLS-DA) results provided evidence of the ability of the content of volatile compounds to discriminate among the different commercial categories. Linear discriminate analysis allowed for a 93% differentiation according to the commercial category and, thus, the length of its aging process in wood. The results obtained show that it would be possible to ensure the commercial category of a Sherry brandy using its content of volatile compounds"
Keywords:		Gas Chromatography-Mass Spectrometry Least-Squares Analysis Multivariate Analysis Volatile Organic Compounds/*analysis Wine/*analysis/statistics & numerical data;
Notes:		"MedlineDuran Guerrero, Enrique Cejudo Bastante, Maria Jesus Castro Mejias, Remedios Natera Marin, Ramon Garcia Barroso, Carmelo eng Research Support, Non-U.S. Gov't 2011/02/25 J Agric Food Chem. 2011 Mar 23; 59(6):2410-5. doi: 10.1021/jf104409n. Epub 2011 Feb 23"