Table 1
DPPH radical scavenging activity of the methanolic extract of C. setidens and its organic solvent-soluble por tions

Conc.(μg/mL)	Inhibition (%)
	500	250	125	62.5	31.3	15.6	IC50 (μg/mL)
MeOHext.	96.3±2.31)	80.1±2.0	71.1±1.7	62.9±1.8	53.1±1.5	37.5±1.2	48.1±2.1
n-Hexanelayer	31.2±1.7	17.0±1.3	12.6±1.5	8.1±1.0	7.2±0.8	5.1±0.8	>500
EtOAclayer	99.7±2.7	72.1±2.3	65.4±2.5	42.1±1.2	32.1±1.3	25.4±1.0	67.9±3.6
n-BuOHlayer	99.8±2.8	87.3±2.6	75.2±2.5	67.1±1.6	56.1±1.5	42.1±1.2	24.3±1.7
H2Olayer	67.4±1.3	55.7±1.4	31.2±0.7	16.7±0.8	8.8±0.5	6.1±0.3	180.3±13.7
(+)-Catechin2)	98.2±1.7	92.7±1.7	92.8±1.5	87.6±1.2	69.2±1.3	46.7±0.9	16.2±1.3

Inhibitory effects are expressed as the mean±SD of triplicate experiments.
(+)-Catechin was used as a positive control.