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J Agric Food Chem

Title:		"Hyperoxygenation and bottle storage of Chardonnay white wines: effects on color-related phenolics, volatile composition, and sensory characteristics"
Author(s):		Cejudo-Bastante MJ; Hermosin-Gutierrez I; Castro-Vazquez LI; Perez-Coello MS;
Address:		"Analytical Chemistry and Food Science Department, Facultad de Ciencias Quimicas, Universidad de Castilla-La Mancha, Ciudad Real, Spain. mariajesus.cejudo@uclm.es"
Journal Title:		J Agric Food Chem
Year:		2011
Volume:		20110311
Issue:		8
Page Number:		4171 - 4182
DOI:		10.1021/jf104744q
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"The effects of hyperoxygenation on Chardonnay white musts and the influence of subsequent storage on the corresponding wines have been evaluated. Attention was focused on the color characteristics, phenolic and volatile composition, and sensorial analysis, not previously reported in conjunction. On the one hand, the hyperoxygenation treatment provoked a significant decrease in the concentration of virtually all phenolic compounds in musts, young wines, and one-year-stored wines. In addition, a higher resistance to browning was observed in stored wines derived from hyperoxygenated musts. Different storage conditions (light and dark) produced significant differences in the 2-S-glutathionylcaftaric acid derivatives amounts. On the other hand, significant differences were observed in the volatile composition of wines due to the hyperoxygenation treatment, such as a decrease in the isoamylic alcohols concentration, acetaldehyde, and beta-damascenone, even after storage under different conditions. Finally, Chardonnay white wines derived from hyperoxygenated musts had higher banana odor and lower herbaceous and flowery notes"
Keywords:		*Color Humans *Odorants Oxygen/*chemistry Phenols/*analysis Principal Component Analysis *Taste Volatile Organic Compounds/*analysis *Wine;
Notes:		"MedlineCejudo-Bastante, Maria Jesus Hermosin-Gutierrez, Isidro Castro-Vazquez, Lucia Isabel Perez-Coello, Maria Soledad eng Research Support, Non-U.S. Gov't 2011/03/15 J Agric Food Chem. 2011 Apr 27; 59(8):4171-82. doi: 10.1021/jf104744q. Epub 2011 Mar 11"