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Type: Artigo de periódico
Title: Exploratory analysis of the volatile profile of beers by HS-SPME-GC
Author: da Silva, GA
Augusto, F
Poppi, RJ
Abstract: Kohonen Neural Network maps were used for exploratory analysis of Brazilian Pilsner beers. The input data consisted of the peak areas of the volatile profile Compounds of samples obtained after headspace solid phase microextraction coupled to gas chromatography. The chromatographic: peaks were identified as originating from compounds Such as alcohols, esters, organic acids, phenolic compounds, ketone and others typically found in the headspace of such samples. Analysis of the Kohonen maps showed that the 20 different brands of beer could be grouped into six sets, with three of these sets having only one sample, according to the composition of their volatile fractions. The volatile species associated with the similarities and differences between each sample group were tentatively identified by mass spectrometry and their contributions to the grouping are discussed. (C) 2008 Elsevier Ltd. All rights reserved.
Subject: beer
gas chromatography
solid phase microextraction
exploratory analysis
Kohonen neural network
Country: Inglaterra
Editor: Elsevier Sci Ltd
Citation: Food Chemistry. Elsevier Sci Ltd, v. 111, n. 4, n. 1057, n. 1063, 2008.
Rights: fechado
Identifier DOI: 10.1016/j.foodchem.2008.05.022
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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