Oxygen free radical scavenger capacity in aqueous models of different procyanidins from grape seeds

Epicatechin 3-O-gallate and various procyanidins obtained from grape seeds were tested for their scavenger capacity for superoxide radical (O2.-) and hydroxyl radical (.OH) in aqueous models. Quantification of O2.- and .OH scavenger capacities was carried out, respectively, by polarography and by the extent of deoxyribose degradation. All the compounds assayed are potent scavengers of these radica…