 |
Article dans une revue
Demonstration of the occurrence of flavanol–anthocyanin adducts in wine and in model solutions
Abstract : Flavanol-anthocyanin (F-A(+)) adducts were detected in red wine. A mechanism involving acid-catalysed cleavage of flavanol oligomers followed by nucleophilic addition of the anthocyanin moiety (in its hemiketal form) to the resulting carbocation (F+) was postulated. To confirm this mechanism, reactions between malvidin3-O-glucoside (Mv3glc) and procyanidin dimerepicatechin-(4-8)-epicatechin 3-O-gallate (B2-3'OG) were studied in a model solution system at pH 2. A new pigment with a UV-Vis spectrum similar to that of Mv3glc and a signal at m/z = 781 in the positive ion mode was detected and was attributed to Ec-Mv3glc, in agreement with the proposed reaction pathway
https://hal.inrae.fr/hal-02681173
Déposant : Migration Prodinra <>
Soumis le : dimanche 31 mai 2020 - 23:05:49
Dernière modification le : jeudi 12 novembre 2020 - 10:06:06
Déposant : Migration Prodinra <>
Soumis le : dimanche 31 mai 2020 - 23:05:49
Dernière modification le : jeudi 12 novembre 2020 - 10:06:06
Données personnelles 
Mentions légales 