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Food Res Int

Title:		Early leaf removal applied in warm climatic conditions: Impact on Tempranillo wine volatiles
Author(s):		Moreno D; Valdes E; Uriarte D; Gamero E; Talaverano I; Vilanova M;
Address:		"Centro de Investigacion Cientificas y Tecnologicas de Extremadura (CICYTEX), INTAEX, Ctra. de S. Vicente s/n, 06007 Badajoz, Spain. Centro de Investigacion Cientificas y Tecnologicas de Extremadura (CICYTEX), Finca la Orden, Ctra. A-V, Km 372, Guadajira, Badajoz, Spain. Mision Biologica de Galicia (CSIC), El Palacio-Salcedo, 36143 Pontevedra, Spain. Electronic address: mvilanova@mbg.csic.es"
Journal Title:		Food Res Int
Year:		2017
Volume:		20160910
Issue:
Page Number:		50 - 58
DOI:		10.1016/j.foodres.2016.09.017
ISSN/ISBN:		1873-7145 (Electronic) 0963-9969 (Linking)
Abstract:		"Defoliation is a cultural practice with demonstrated benefits in grape and wine quality. The objective of this study was to evaluate the effect of early leaf removal applied in warm climatic conditions on volatile composition of Tempranillo wines. During three consecutive vintages (2009-2011) wine volatile compounds (alcohols, C(6)-compounds, ethyl esters, acetates, volatile acids, lactones and carbonyl compounds) from defoliated and non-defoliated vines were identified and quantified by GC-MS. Early leaf removal induced the increase of the concentration of all families of volatile compound quantified with exception of lactones. Significant increase was observed for 23 out 34 volatile compounds analyzed. The vintage effect also was shown, where the highest effect of defoliation was exhibited in 2009 vintage. Principal component analysis (PCA) showed a good separation of defoliation, non-defoliation and vintage according to wine volatile composition. The analysis of odour activity value (OAV) exhibited an increase of fruity and floral odour on Tempranillo wines when early defoliation was applied"
Keywords:		*Agriculture *Climate Fruit/*metabolism Gas Chromatography-Mass Spectrometry Hot Temperature Humans Odorants/analysis *Plant Leaves Principal Component Analysis Species Specificity Vitis/classification/*metabolism Volatile Organic Compounds/*metabolism Wi;
Notes:		"MedlineMoreno, Daniel Valdes, Esperanza Uriarte, David Gamero, Esther Talaverano, Inmaculada Vilanova, Mar eng Research Support, Non-U.S. Gov't Canada 2017/06/15 Food Res Int. 2017 Aug; 98:50-58. doi: 10.1016/j.foodres.2016.09.017. Epub 2016 Sep 10"