. 2021 Apr 27;26(9):2555. doi: 10.3390/molecules26092555

Table 2.

Radical scavenging and antioxidant activity of R. emodi using different solvent fractions.

Antioxidant Activities	Fraction	IC₅₀ (μg/mL)
DPPH radical scavenging	n-hexane	2448.79 ± 174.14 ^c
	n-butanol	38.67 ± 18.80 ^a
	Ethyl acetate	21.52 ± 2.78 ^a
	Dichloromethane	348.42 ± 26.98 ^b
	Water	43.04 ± 0.39 ^a
	Ascorbic acid *	70.33 ± 0.30 ^a
ABTS⁺ radical scavenging	n-hexane	1718.05 ± 308.38 ^b
	n-butanol	128.96 ± 1.95 ^a
	Ethyl acetate	90.25 ± 0.62 ^a
	Dichloromethane	260.67 ± 6.51 ^a
	Water	141.97 ± 2.20 ^a
	Ascorbic acid *	111.06 ± 2.05 ^a
SOD activity	n-hexane	ND
	n-butanol	24.36 ± 0.84 ^b
	Ethyl acetate	2.31 ± 1.1 ^a
	Dichloromethane	43.87 ± 9.03 ^c
	Water	32.25 ± 4.11 ^b
	Ascorbic acid *	64.78 ± 4.65 ^d

^a–d Values within a column followed by different letters are significantly different (Duncan test, n = 3, p < 0.05). * Compound used as a positive control.