RT Journal Article
SR Electronic
T1 Effect of Benzothiadiazole and Methyl Jasmonate on the Volatile Compound Composition of Monastrell Grapes and Wines
JF American Journal of Enology and Viticulture
JO Am. J. Enol. Vitic.
FD American Society for Enology and Viticulture
SP ajev.2012.12011
DO 10.5344/ajev.2012.12011
A1 Encarna Gómez-Plaza
A1 Laura Mestre-Ortuño
A1 Yolanda Ruiz-García
A1 Jose Ignacio Fernández-Fernández
A1 Jose María López-Roca
YR 2012
UL http://www.ajevonline.org/content/early/2012/06/22/ajev.2012.12011.abstract
AB Benzothiadiazole (BTH) and methyl jasmonate (MeJ) have been described as exogenous elicitors of some plant defence compounds. The objective of this study was to determine whether the application of BTH and MeJ to grape clusters at the beginning of the ripening process affects the synthesis of volatile compounds in grapes (as has been observed in other fruits) and whether this effect has a technological significance in the resulting wines. The results indicated that both treatments increased the levels of volatile compounds in grapes, especially terpenes and norisoprenoids in BTH-treated grapes. The wines obtained from the treated grapes also showed higher levels of terpene and isoprenoids. Wines from MeJ-treated grapes presented levels of these volatile compounds almost two times higher than the wines made from control grapes. These differences in the volatile compound levels could be sensorially detected.