High Levels of Resveratrol in Grapes Cultivated at High Altitude Valleys in Bolivia

摘要

Trans-resveratrol, lolal antioxidanl capacity ('/'AC), and lolal phenolic compounds were assessed in Bolivian grape cultivars collected at high altitude valleys. The TAC of the grapes ranged from 0.8 to 22 imol Trolox equivalents/g dry matter determined by 2,2'-azino-bis(3-ethylhenzthiazoline-6-sulphonic acid), and from 0.6 to 70 determined hy the ferric reduction antioxidant power. In the present study, we observed that under certain conditions trans-resveratrol levels in Bolivian grapes are 10-fold higher than the reported data from the literature. Additionally, the temporal evolution in three different solar ultraviolet-B radiation levels was carried out to understand their effect on the oxidative processes.