Table 3.

IC₅₀ of free radical scavenging activity of standards and different extracts of C. angustifolia

Test material		DPPH radical IC50 in μg/mL
Plant extracts	Methanol	2.49 ± 0.01*
	Ethanol	2.41 ± 0.02*
	Acetone	3.06 ± 0.04**
	Ethyl acetate	2.74 ± 0.02*
	Aqueous	3.03 ± 0.04**
Standards	Gallic acid	2.52 ± 0.02
	Ascorbic acid	2.54 ± 0.00

Each value represents the mean ± standard deviation of three replicates (n = 3)

(*), and (**), significant at level P ≤ 0.01 and 0.001, respectively