Comparative Analysis of Antioxidant Activity of Crude Flavonoids in Different Varieties of Ginger
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Abstract:
In this paper, the effects of different varieties on the antioxidant activities of crude flavonoids from ginger were mainly compared and analyzed. Using the fengtou tender and old ginger and yellow craw old ginger as the raw materials, the effects of three different flavonoids from ginger on the scavenging effect of superoxide anion free radicals, hydroxyl radical and hydrogen peroxide as well as the protective effect of the DNA-damage were determined by the chemiluminescence methods. The results showed that the antioxidant effect of flavonoids from old ginger was superior to that of tender ginger, but the protective effect of flavonoids from tender ginger was significantly better than that of old ginger in the DNA damage system. In terms of variety, the antioxidant effect of the flavonoids from different varieties in hydrogen peroxide system was not significant, while the differenes of the other three systems reached a significant level. The antioxidant effect of flavonoids from fengtou ginger was better than that of yellow craw ginger in the hydroxyl radical, hydrogen peroxide and DNA damage protection system, but the scavenging effect on the superoxide anion free radical of flavonoids from yellow craw ginger was slightly better than the fengtou ginger. However, the difference was not significant at 0.01 level. A comprehensive study showed that the antioxidant effect of crude flavonoids from ginger was influenced by variety and maturity.
