Abstract: Total flavonoids were extracted from Folium Artemisiae Argyi. The extraction rate of flavonoids was detected by adoption NaNO2-Al(NO3)3-NaOH color analysis. On the basis of a single factor, the extraction rate was measured through orthogonal experiment in this article. The best extraction conditions were concentration of 40% ethanol, feed ratio of 1: 40 and temperature at 70℃ for 3 hours. Reducing ability, total antioxidant activity and superoxide anion radical scavenging assays were carried out to eva luate the antioxidant potential of the total flavonoids.
Key words: Folium Artermisiae Argyi; Flavonoids; Antioxidant; Extraction