Table 3.

Antioxidant Activities of the Crude Extract and Solvent Fractions

Concentration	Percentage (%) Inhibition of DPPH
	Water	Chloroform	Ethyl Acetate	Crude Flower	Ascorbic Acid
15.625 μg/mL	2.39±0.63	3.22±0.14	6.48±0.12	6.28±0.39	14.56±0.29
31.25 μg/mL	5.08±0.29	7.44±0.81	10.48±0.55	12.64±0.27	29.04±0.67
62.5 μg/mL	9.71±0.63	11.11±0.64	13.71±0.37	17.35±0.10	51.62±0.17
125 μg/mL	18.26±0.74	22.58±0.77	31.25±0.49	33.53±0.73	59.54±0.37
250 μg/mL	22.38±0.38	33.22±0.38	39.41±0.64	42.01±0.68	72.45±0.88
500 μg/mL	36.52±0.43	48.07±0.51	51.69±0.66	58.38±0.34	89.72±0.86
IC50 μg/mL	16.96±0.13	12.14±0.64	10.78±0.54	9.41±0.14	3.59±0.94

Notes: Each value of Percentage inhibition of DPPh free radical is presented as means ± S.E.M., n = 3.

Abbreviations: DPPh, 2,2-diphenyl-1-picrylhydrazine; IC₅₀, half-maximal inhibitory concentration; SEM, standard error of mean.