Identification of volatile constituents in wines from Vitis vinifera var vidadillo and sensory contribution of the different wine flavour fractions

Abstract

A wine made with vidadillo, a very old Spanish variety, has been continuously extracted and the extract further fractionated in a silica gel column with successive portions of hexane/dichloromethane/ether mixtures following an elutropic order. Ten fractions showing different odours were isolated and analysed by HRGC-MS and their olfactory and flavour threshold determined via triangular tests. More than 200 compounds belonging to different biosynthetic pathways have been identified. It is important to note the large number of y-and 6-lactones and of compounds derived from the phenylpropanoid metabolism present. From a sensory point of view, all the fractions showed aroma values below 100, meaning that there are n o clear impact compounds. Three fractions scored aroma values higher than 10, and therefore play an important role in the perception of the different flavour and aroma nuances of the wine. Compounds that may play an outstanding role are fuse1 alcohol acetates in the fruity notes, yand 6-lactones in the peach notes, and some unidentified compounds in the liquorice notes. The silica gel prefractionation method leads to a class separation, and compounds showing similar aromatic notes are eluted together, allowing an easy interpretation of the role of the different groups of flavours.

Effect of Time and Storage Conditions on Major Volatile Compounds of Zalema White Wine

“…Esters contribute favorably to wine aroma as fruity notes. In particular, acetate esters are correlated with the freshness and fruitiness of young wines (Rapp 1990); therefore, the reduction in the concentrations of acetates observed during the storage period could be the main cause of the loss of fresh aroma (Ferreira et al . 1995b).…”

Perceptual interactions between fruity and woody notes of wine

“…[1][2][3][4] These volatile compounds are present at different concentration levels and proportions, depending on the wines. A previous study showed that when woody character increases, the flavour complexity of wine decreases.…”

Quality and aroma characteristics of honey peach wines as influenced by different maturity

“…Ferreira's research revealed peach wine contains γ-and α-lactones. [36] Due to the different maturity of peaches, there were great differences in the relative contents and numbers of volatile compounds in four kinds of peach wines (Figure 3). Esters give a positive contribution to the general quality of the wine.…”