Antioxidant activity in vitro of compound beverage of purple sweet potato and black grape
Purple sweet potato and black grape were used to make compound beverage. Antioxidant activity in vitro of compound beverage were examined. When anthocyanins were 3.9 mg/mL, 50% hydroxy radicals were scavenged. When anthocyanins were 2.9 mg/mL, 50% superoxide radicals were scavenged.