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J Sci Food Agric

Title:		Effect of seasonal climate fluctuations on the evolution of glycoconjugates during the ripening period of grapevine cv. Muscat a petits grains blancs berries
Author(s):		Crespo J; Rigou P; Romero V; Garcia M; Arroyo T; Cabellos JM;
Address:		"Departamento de Investigacion Agroalimentaria, IMIDRA, Alcala de Henares, Madrid, Spain. UMR 1083 Sciences pour l'oenologie, INRA, SupAgro, Universite Montpellier I, Montpellier, France"
Journal Title:		J Sci Food Agric
Year:		2018
Volume:		20171016
Issue:		5
Page Number:		1803 - 1812
DOI:		10.1002/jsfa.8656
ISSN/ISBN:		1097-0010 (Electronic) 0022-5142 (Linking)
Abstract:		"BACKGROUND: Temperature changes and rainfall fluctuations affect the winemaking industry by altering vine phenology, crop yield, must composition and wine quality. Here, the evolution of the varietal aroma potential during ripening over three consecutive seasons has been analyzed considering climate conditions. The effect of season, ripening date and climatic conditions on aroma precursor accumulation in grapes was studied by multivariate analysis and discussed in regard to the potential aromatic quality of the wine. RESULTS: In contrast to musts obtained from grapes harvested in warm and dry seasons (2014 and 2015), musts obtained from grapes harvested in the coolest and most humid year (2013) showed a lower pH, higher total acidity, higher varietal aroma potential index (IPAv), and higher aromatic potential of linalool, geraniol and nerol (typical of the Muscat flavor). CONCLUSION: Considering the three seasons, grapes synthesized and accumulated more precursors when milder temperatures and late rains throughout veraison were recorded. However, we observed a high fluctuation of aroma precursors during the ripening period, so choosing the correct harvesting date (according to grape aroma potential) may overcome some of the negative effects linked to climate conditions. (c) 2017 Society of Chemical Industry"
Keywords:		Climate Flavoring Agents/*chemistry Fruit/*chemistry/growth & development Glycoconjugates/*chemistry Humans Odorants/analysis Seasons Taste Temperature Vitis/chemistry/*growth & development Volatile Organic Compounds/chemistry Wine/analysis aromatic poten;
Notes:		"MedlineCrespo, Julia Rigou, Peggy Romero, Valeria Garcia, Margarita Arroyo, Teresa Cabellos, Juan M eng England 2017/09/06 J Sci Food Agric. 2018 Mar; 98(5):1803-1812. doi: 10.1002/jsfa.8656. Epub 2017 Oct 16"