三种红景天总黄酮类物质的抗氧化活性的比较分析

Objective: Antioxidant activity of Total flavonoids from three Chinese Rhodiola plants were analyzed. Methods: The scavening rates of DPPH、-OH、O2-、NO2- free radicals, chelating of Fe2+, and total antioxidant capacity were adopted to evaluated the total flavonoids of three Rhodiola plants in vitro. Results:The concent of flovonoids in Rhodiola crenulata was higher than R. bupleuroides and R. angusta, and the scavenging effect of Fe2+ chelating, superoxide radical, and T-AOC of R. crenulata were more higher than the others. The scavenging effect of DPPH radical, hydroxyl radical and nitrite clearing of R. bupleuroides were the most strongest. Conclusion: They were promising resources with high antioxidant activity. Each Rhodiola sp. has special capacity for scavening peroxide.