The results showed that, CH leaf extract exhibited potent neutralizing and reducing activities of free radicals in the test: DPPH (EC50=26.73±1.16 µg / mL), NO• (EC50=55.43±0.78 µg / mL), ABTS•+ (EC50=7.79±0.01 µg / mL), RP (EC50=9.03±0.12 µg / mL), FRAP (EC50=9.20±0.30 µg / mL), and TAC (EC50=59.49±2.61 µg/mL).