Identification of Furaneol Glucopyranoside, the Precursor of Strawberry-like Aroma, Furaneol, in Muscat Bailey A

Abstract

2,5-Dimethyl-4-hydroxy-3(2H)-furanone (furaneol) was reported to be responsible for the strawberry-like aroma in some Vitis labrusca and hybrid (V. labrusca x V. vinifera) winegrapes. This study identified furaneol glucopyranoside from the juice of the Japanese hybrid grape, Muscat Bailey A [V. labrusca (Bailey) x V. vinifera (Muscat Hamburg)], using high-performance liquid chromatography tandem mass spectrometry. The concentrations of furaneol glucopyranoside and furaneol in the juices of Concord (V. labrusca) and Muscat Bailey A were shown to be much higher than those in the juices of other V. vinifera varieties. It was also demonstrated that furaneol and its glucopyranoside were accumulated mainly in Muscat Bailey A berry flesh. These findings are expected to contribute to the elucidation of the mechanism of formation in grapes, and contribute to the understanding of the characteristic strawberry-like aroma of Muscat Bailey A wines.