OBJECTIVE

To study antioxidant activities of different extracts of Senecio argunensis.

METHODS

The antioxidant activities of S. argunensis extracts with acetoacetate, n-Butanol and water were detected by DPPH * free radical-scavenging method and beta-carotene/linoleic acid system.

RESULTS

The acetoacetate, n-Butanol and water extracts from S. argunensis eliminated DPPH * in dose-dependent manner, their EC50 values were 0.0198, 0.0219 and 0.092 mg/ml, respectively. The strength order of the antioxidant activities of the three parts in beta-carotene/linoleic acid system was acetoacetate, n-Butanol and water extracts.

CONCLUSIONS

The extracts of the three parts of S. argunensis all have antioxidant activities. Among these extracts, extracts with acetoacetate have the highest antioxidant activity.