RT info:eu-repo/semantics/article T1 Effect of yeast derivatives and β-glucanases on ageing over lees process of tempranillo red sparkling wine A1 Moyano Gracia, Raúl A1 Vila Crespo, Josefina María A1 Ruipérez Prádanos, Violeta A1 Rodríguez Nogales, José Manuel A1 Fernández Fernández, Encarnación K1 Wine K1 Sparkling wine K1 Vinos espumosos K1 Red wines K1 Vinos tintos K1 Uvas - Análisis K1 Wine and wine making K1 Vinos y vinificación K1 Yeast K1 Levadura K1 Fermentation K1 Food science K1 3309.29 Vino K1 3309 Tecnología de Los Alimentos K1 2302.12 Fermentación AB This study focuses on improving the second fermentation and the in-bottle ageing over lees process for 9 and 21 months of a red sparkling wine. The aim of the study was to enhance wine quality and try to make it more pleasant for consumers. For this purpose, four different yeast derivatives (yeast walls, yeast walls with tannins, inactivated yeasts and mannoproteins) and β-glucanases were added to a red base sparkling wine and were aged over lees during two different periods: 9 and 21 months. Oenological parameters, total polysaccharides, total proteins, free amino nitrogen, phenolic composition, foaming properties, and volatile compounds were analysed in conjunction with a sensory evaluation. Results show the different incidences of the studied adjuvants on the final parameters, highlighting the importance of the interactions of the studied adjuvants over time. In fact, time itself turned out to be one of the main factors affecting the final characteristics of the wine, so influencing consumers’ opinions and modifying the wine’s acceptability and quality. PB MDPI SN 2311-5637 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/67965 UL https://uvadoc.uva.es/handle/10324/67965 LA eng NO Fermentation, 2023, Vol. 9, Nº. 12, 1012 NO Producción Científica DS UVaDOC RD 23-jun-2024