Table 1.

DPPH free radical scavenging and hydroxyl radical scavenging potential of ethanolic leaf extract of Croton caudatus and Hibiscus sabdariffa at 500 µg/mL

Ethanolic leaf extract and positive control	DPPH radical scavenging activity		OH radical scavenging activity
	Percentage of DPPH activity (%)	IC50 (µg/mL)	Percentage of OH· radical scavenging (%)	IC50 (µg/mL)
C. caudatus	57.86 ± 1.69*	305.39	59.99 ± 1.52***	335.07
H. sabdariffa	65.19 ± 1.63*	184.88	65.55 ± 2.45	281.42
Ascorbic acid	74.68 ± 3.19	2.83	67.37 ± 2.88	3.83

Radical scavenging percentage values were represented as Mean ± standard deviation (SD) of 3 replicates (n = 3). Ascorbic acid was used as positive control

All the values are expressed as Mean ± SD (n = 3)

* Values are significantly different from positive control (ascorbic acid) at p < 0.05

** Values are significantly different from positive control (ascorbic acid) at p < 0.01

*** Values are significantly different from positive control (ascorbic acid) at p < 0.001