italianoenglishfrançaisdeutschespañolportuguês
Language
Search
  • » Maturation and Oak
  • » THE ROLE OF GLUTATHIONE ON THE AROMATIC EVOLUTION OF DRY WHITE WINE.
  • Vicente Ferreira , LAAE, Universidad de Zaragoza
    VIDEO SEMINAR ENOFORUM 2018: 70% of commercial wines contain, without it being evident, the aromas that will cause their aromatic degradation when free SO2 level decreases. Essentially there are tw...
    Price:15 €(Tax included)
    Published on: 17/01/2019

THE ROLE OF GLUTATHIONE ON THE AROMATIC EVOLUTION OF DRY WHITE WINE.

Denis DUBOURDIEU* et Valérie LAVIGNE-CRUEGE**

The glutathione content of Sauvignon Blanc must varies from 0 to 30 mg/L and is affected by the vine's nutrition in terms of nitrogen. Musts with the lowest nitrogen content also contain the least glutathione. At the beginning of alcoholic fermentation, while the yeast cells are multiplying, glutathione disappears almost completely from the must, then increases again at the end of fermentation and during the first few months of aging on the lees. The presence of reducing lees during barrel-aging limits the decrease of glutathion and varietal volatile thiols in Sauvignon Blanc wines, while at the same time preventing aroma defects (sotolon and 2-aminoacetophenone) from developing during the aging of dry white wines. Adding 10mg/L glutathione to Sauvignon Blanc wine during bottling prevents the color from yellowing, dissipation of the varietal aroma, and the wine's tendency towards developing aging defects.
Published on 16/02/2004
Related sheets
© All Right Reserved
ISSN 1826-1590 VAT: IT01286830334
powered by Infonet Srl Piacenza
Privacy Policy
This website and its related third-party services make use of cookies necessary for the purposes described in the cookie policy. If you want to learn more about cookies or how to disable them (either totally or partially), please see the cookie policy. By closing this banner, scrolling through this page, clicking on a link or continuing navigation in any other way, you consent to the use of cookies.
More informationOK

- A +
ExecTime : 2,812988