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First evidence of the presence of S-cysteinylated and S-glutathionylated precursors in tannins

Roberto Larcher, Loris Tonidandel, Giorgio Nicolini, Bruno Fedrizzi; Food Chemistry, Volume 141, Issue 2, 15 November 2013, Pages 1196–1202

Tannins are widely used in winemaking and food and beverage preparation for the many different contributions they can give to the overall characteristics of the product (e.g., colour stability, mouthfeel and aromatic composition). Varietal thiols and their precursors are one of the most interesting research areas in food science and a lot of effort has been put to further the current understanding on their formation and on the impact of different production strategies on their concentration in the final product.

This paper reports the identification of two important thiol precursors (Cys-3MH and GSH-3MH) in commercial grape oenological tannins and, to the best of our knowledge, this information is reported here for the first time. This finding allows potential new perspectives in the winemaking and the food industry, offering the possibility of controlled additions of thiol precursors in pre-fermentative stages in order to tune the aroma profile of fermented products

(We recommend that you consult the full text of this article)

Published on 07/14/2014
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