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J Agric Food Chem

Title:		Changes in physicochemical characteristics and volatile constituents of yellow- and white-fleshed nectarines during maturation and artificial ripening
Author(s):		Aubert C; Gunata Z; Ambid C; Baumes R;
Address:		"Centre technique interprofessionnel des fruits et legumes, route de Molleges, 13210 Saint-Remy-de-Provence, France. aubert@ctifl.fr"
Journal Title:		J Agric Food Chem
Year:		2003
Volume:		51
Issue:		10
Page Number:		3083 - 3091
DOI:		10.1021/jf026153i
ISSN/ISBN:		0021-8561 (Print) 0021-8561 (Linking)
Abstract:		"Changes in the volatile composition during maturation and artificial ripening of yellow-fleshed nectarines were investigated by means of GC-FID and GC-MS over three years (1999-2001). Unripe and commercially ripe fruits were placed in ripening chambers until complete ripening and compared to tree-ripe nectarines. Firmness, weight, soluble solids (SS), titratable acidity (TA), SS/TA ratio, organic acids, and sugars were also determined. Furthermore, the tree-ripe and artificially ripened yellow-fleshed nectarines were subjected to sensory analysis by a taste panel. In 2001, a similar experiment on white-fleshed nectarines (cv. Vermeil) was performed to compare with the results obtained on yellow-fleshed nectarines. Levels of volatiles compounds, in particular, lactones and C(13) norisoprenoids, were found to be the same or higher in the artificially ripened nectarines compared with the tree-ripe nectarines. In addition, no significant difference was observed for sweetness, sourness, and the intensities of 'peach odors' or 'peach aroma' in the sensory analysis between the tree-ripe samples and the artificially ripened nectarines. However, in the latter the levels of SS and the SS/TA ratio were very close to those observed in the initial unripe samples and significantly lower than those observed in tree-ripe nectarines"
Keywords:		"Aldehydes/analysis Chemical Phenomena Chemistry, Physical Fruit/*chemistry/*growth & development Gas Chromatography-Mass Spectrometry Humans Lactones/analysis Odorants/*analysis Prunus/*chemistry/*growth & development Taste Volatilization;"
Notes:		"MedlineAubert, Christophe Gunata, Ziya Ambid, Christian Baumes, Raymond eng Comparative Study Research Support, Non-U.S. Gov't 2003/05/02 J Agric Food Chem. 2003 May 7; 51(10):3083-91. doi: 10.1021/jf026153i"