Luigi Picariello1,2, Davide Slaghenaufi2, Maurizio Ugliano2. 1. Department of Agricultural Sciences, Division of Grape and Wine Sciences, University of Naples Federico II, Avellino, Italy. 2. Department of Biotechnology, University of Verona, S. Pietro in Cariano, Italy.
Abstract
BACKGROUND: During the production of red wine, moderate uptake of oxygen in the post-fermentative phase helps the stabilization of colour and the decrease of astringent tannins. However, the influence of oxygen uptake during the fermentative phase in must has not been completely investigated. In this study we evaluated the effect of controlled oxygen supply during fermentation-maceration of Corvina grapes on colour characteristics, tannins, volatile compounds, acetaldehyde production and oxidative stability of the finished wine. RESULTS: Oxygen supply during fermentation improved the formations of stable pigments of Corvina wines due to the higher production of acetaldehyde. However, in wines treated with oxygen a lower production of fruity esters by yeasts was observed. Wines obtained from higher oxygen exposure during fermentation-maceration showed reduced ability to react with oxygen during storage. CONCLUSIONS: Fermentative and post-fermentative oxygenation should be considered as a technological approach for modifying colour composition and stability, as well as oxidative behaviour of wine during aging.
BACKGROUND: During the production of red wine, moderate uptake of oxygen in the post-fermentative phase helps the stabilization of colour and the decrease of astringent tannins. However, the influence of oxygen uptake during the fermentative phase in must has not been completely investigated. In this study we evaluated the effect of controlled oxygen supply during fermentation-maceration of Corvina grapes on colour characteristics, tannins, volatile compounds, acetaldehyde production and oxidative stability of the finished wine. RESULTS:Oxygen supply during fermentation improved the formations of stable pigments of Corvina wines due to the higher production of acetaldehyde. However, in wines treated with oxygen a lower production of fruity esters by yeasts was observed. Wines obtained from higher oxygen exposure during fermentation-maceration showed reduced ability to react with oxygen during storage. CONCLUSIONS: Fermentative and post-fermentative oxygenation should be considered as a technological approach for modifying colour composition and stability, as well as oxidative behaviour of wine during aging.
Authors: Marioli Carrasco-Quiroz; Ana María Martínez-Gil; Ignacio Nevares; Víctor Martínez-Martínez; Rosario Sánchez-Gómez; Maria Del Alamo-Sanza Journal: Foods Date: 2022-07-01