Abstract:

The aims were to study the extraction, identification method of total flavonoids in Bauhinia and its effect on scavenging hydroxyl radicals. The total flavonoids were extracted by using ethanol extraction method from Bauhinia. A spectrophotometry was used to check the total flavonoids in Bauhinia and the effect of Bauhinia on scavenging hydroxyl radicals. The optimum technical conditions were ethanol concentration 80%, the volume 1:20 and heating extracting time 1 h at 80℃. The extraction rate of flavonoids was 11.81%. This test was simple and had no pollution. It provided the best way to extract the flavones form Bauhinia.