Phytochemical Screening and In Vitro Evaluation of the Antioxidant Potential of Dichloromethane Extracts of Strychnos henningsii Gilg. and Ficus sycomorus L.

Table 5

% in vitro DPPH radical scavenging activities of DCM extracts of S. henningsii and F. sycomorus.

Concentrations
Groups	0.0125 mg/ml	0.025 mg/ml	0.05 mg/ml	0.1 mg/ml	0.2 mg/ml	IC50 value
Ascorbic acid %	42.84 ± 1.05^a	50.00 ± 1.85^a	64.06 ± 1.75^a	80.13 ± 2.06^a	91.39 ± 1.38^a	0.025 mg/ml
S. henningsii %	30.38 ± 1.61^b	34.93 ± 2.42^b	46.60 ± 1.49^b	61.71 ± 1.69^b	78.33 ± 1.65^b	0.068 mg/ml
F. sycomorus %	29.73 ± 2.21^b	37.94 ± 1.15^b	46.45 ± 2.74^b	63.81 ± 2.27^b	76.38 ± 1.92^b	0.062 mg/ml

Values are expressed as mean ± SEM of the three replicates. Column means followed by the same superscript letters were not significantly different () by one-way ANOVA followed by Tukey’s post hoc test.