ANTIOXIDANT ACTIVITY IN FIVE GRAPE CULTIVARS

Abstract

Pulp extracts from five grape cultivars (Black Globe, Black Magic, Muscat Hamburg, Muscat Ottonel, Red Globe) locally grown in Buzău county were evaluated for antioxidant activity by using the DPPH method. Muscat Hamburg (63.94 %) had the highest average radical scavenging percentage, while Muscat Ottonel (22.99 %) had the lowest one. In terms of IC50, this equates to 26.07 mg/mL for Muscat Hamburg and 72.49 mg/mL for Muscat Hamburg. Results are comparable to data on other known grape cultivars. According to known classifications, Black Magic, Muscat Hamburg and Red Globe extracts can be considered as
very strongly antioxidant, while Black Globe and Muscat Ottonel were strongly antioxidant.