abril 2020

Volatilome fingerprint of red wines aged with chips or staves: Influence of the aging time and toasting degree

Georgiana-Diana; Dumitriu (Gabur); Rafael A. Peinado; Valeriu V. Cotea; Nieves López de Lerma

Accede

• Wines were aged for two periods of time with different toast degree chips or staves.• 17 aroma compounds account for the 95% of the sum of aroma series. • Wines aged with staves shows the highest aroma compounds concentration. • Wines aged with medium toast oak pieces show high woody aromas. • The three aging factors were associated with the 17 aroma compounds selected.

Abstract

The influence on aroma compounds chips or staves and toasting degree have been analyzed in red wines aged for two periods of time. Ethyl propanoate, ethyl butanoate, ethyl octanoate, ethyl acetate, isoamyl acetate, isobutanol, 2-methyl-1-butanol, 2-phenylethanol, E-2-hexenol, octanal, nonanal, decanal, γ-nonalactone, furfural, 5-methylfurfural, 2-methoxy-4-vinylphenol and cis-whiskey lactone were the compounds that contribute the most to the aroma series profile. By means of principal components analysis, esters were related to the aging time; cis-whiskey lactone with the type of wood pieces and octanal, 5-methyl furfural and cis-whiskey lactone with the toasting degree. Star plot show that woody aroma compounds are dominant in wines aged with low toasting degree oak pieces, whereas medium plus toasted pieces increased the concentration of aroma compounds with fruity aroma descriptors. Wines with prominent fruity or woody aromas can be obtained depending upon the degree of toasting of wood pieces used for aging.

Alternative aging system Aroma compounds Chips Oak Staves Toasting degree