Effects of the extract on the activities of catalase. Each bar represents a mean ± S.E.M.; n = 5; bp < 0.01, cp < 0.05: significantly different compared to water. αp < 0.001, γp < 0.05: significantly different compared to ethanol and sucrose. EtOH + Su = Ethanol and Sucrose; Ext50, Ext100 and Ext150 = Extract at the respective doses of 50, 100 and 150 mg/kg; Nif = Nifedipine.