Influence of Grape Berry Maturity on Juice and Base Wine Composition and Foaming Properties of Sparkling Wines from the Champagne Region

Molecules

Jean-Claude Boulet¹  Céline Vrigneau²  Sandrine Jégou³  Pin-He Liu³  Thomas Salmon³  Richard Marchal³  DucAn Hoang³ 

[1] Institut National de la Recherche Agronomique, Unité Mixte de Recherches No. 1083, Sciences pour l’Œnologie, 2 Place Pierre Viala, 34060 Montpellier, France;Institut Œnologique de Champagne, 9 Rue du Commerce, 51350 Cormontreuil, France;Laboratory of Oenology, Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687 Reims CEDEX 2, France;

关键词: grape berry maturity;    protein;    foam;    grape juice;    base wine;    sparkling wine;    Pearson’s correlation;   

DOI  :  10.3390/molecules23061372

来源: DOAJ

【 摘 要 】

In sparkling wine cool-climate regions like Champagne, it is sometimes necessary to pick the healthy grape clusters that have a relatively low maturity level to avoid the deleterious effects of Botrytis cinerea. In such conditions, we know that classical oenological parameters (sugars, pH, total acidity) may change but there is little information concerning the impact of grape berry maturity on wine proteins and foaming properties. Therefore, healthy grapes (Chardonnay and Pinot meunier) in 2015 and 2016 were picked at different maturity levels within the range of common industrial maturity for potential alcohol content 8–11% v/v in the Champagne region. Base wine protein content and foamability, and oenological parameters in grape juice and their corresponding base wines, were investigated. The results showed that base wine protein contents (analyzed by the Bradford method and by electrophoresis) and foamability were higher when the grapes were riper. The Pearson’s correlation test found significant positive correlations (r = 0.890–0.997, p < 0.05) between Chardonnay grape berry maturity degree (MD) and base wine foamability in both vintages. Strong correlations between MD and most of the oenological parameters in grape juice and base wine were also found for the two cultivars. Under the premise of guaranteed grape health, delaying harvest date is an oenological decision capable of improving base wine protein content and foamability.

【 授权许可】

Unknown