Influence of supplementation with different oenological tannins on malvidin-3-monoglucoside copigmentation

Jordi Gombau, Adeline Vignault, Olga Pascual, Joan Miquel Canals, Pierre-Louis Teissedre, Fernando Zamora, Jean-Marie Aurand
2016 BIO Web of Conferences  
The effect as copigment of (-)-epicatechin and five different oenological tannins has been measured in a model wine solution containing malvidine-3-monoglucoside. The results show that all oenological tannins exert a positive effect on the color of the malvidine solution, increasing the global absorptivity spectrum and changing the Cielab coordinates. Specifically, supplementation with oenological tannins increase a* and b* and decreases L*. Overall, the effect as copigments of all oenological
more » ... of all oenological tannins was higher than that of (−)epicatechin.
doi:10.1051/bioconf/20160702033 fatcat:yv65v6s6hndyplq4jzmhub4ony