Content determination and antioxidation activity of the total flavonoids in the peels of the jackfruit Artocarpus heterophyllus and the durian Durio zibethinus L.

The total flavonoids in the peels of the jackfruit Artocarpus heterophyllus and the durian Durio zibethinus L. were extracted with 70% ethanol by means of ultrasonic and reflux. And the content of the total flavonoids were determined by spectrophotometry with lutin as an indicator, meanwhile the antioxidation activity of their ethanol extracts were also evaluated by the experiment of hydroxyl radical scavenging activity. The results showed that the contents of the total flavonoids in the peels of the jackfruit Artocarpus heterophyllus and the dulian Durio zibethinus L. were 42.28 mg/g and 8.31 mg/g, respectively, and both the ethanol extracts of the peels of the jackfruit Artocarpus heterophyllus and the durian Durio zibethinus L.showed moderate antioxidation activity.