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J Agric Food Chem

Title:		Effect of oxygen on volatile and sensory characteristics of Cabernet Sauvignon during secondary shelf life
Author(s):		Lee DH; Kang BS; Park HJ;
Address:		"School of Life Science and Biotechnology, Korea University, 5-1, Anam-dong, Sungbuk-gu, Seoul 136-701, Republic of Korea"
Journal Title:		J Agric Food Chem
Year:		2011
Volume:		20111007
Issue:		21
Page Number:		11657 - 11666
DOI:		10.1021/jf200759d
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"The oxidation of Cabernet Sauvignon wines during secondary shelf life was studied by headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography-quadrupole mass spectrometry (GC-qMS) and sensory tests, with the support of multivariate statistical analyses such as OPLS-DA loading plot and PCA score plot. Four different oxidation conditions were established during a 1-week secondary shelf life. Samples collected on a regular basis were analyzed to determine the changes of volatile chemicals, with sensory characteristics evaluated through pattern recognition models. During secondary shelf life the separation among collected samples depended on the degree of oxidation in wine. Isoamyl acetate, ethyl decanoate, nonanoic acid, n-decanoic acid, undecanoic acid, 2-furancarboxylic acid, dodecanoic acid, and phenylacetaldehyde were determined to be associated with the oxidation of the wine. PCA sensory evaluation revealed that least oxidized wine and fresh wine was well-separated from more oxidized wines, demonstrating that sensory characteristics of less oxidized wines tend toward 'fruity', 'citrous', and 'sweetness', while those of more oxidized wines are positively correlated with 'animal', 'bitterness', and 'dairy'. The study also demonstrates that OPLS-DA and PCA are very useful statistical tools for the understanding of wine oxidation"
Keywords:		Adult Female Flavoring Agents/*chemistry Food Handling Humans Male Middle Aged Oxygen/*chemistry Taste Vitis/*chemistry Volatile Organic Compounds/*analysis Wine/*analysis;
Notes:		"MedlineLee, Dong-Hyun Kang, Bo-Sik Park, Hyun-Jin eng Research Support, Non-U.S. Gov't 2011/10/01 J Agric Food Chem. 2011 Nov 9; 59(21):11657-66. doi: 10.1021/jf200759d. Epub 2011 Oct 7"