Table 1. DPPH scavenging activity of AFMV and ascorbic acid at different concentrations.
| Test material | Concentration (µg/mL−1) | % Scavenging activity (Mean ± SEM) | IC50 (μg mL−1) |
|---|---|---|---|
| Ascorbic acid | 31.25 | 39.86 ± 0.31b | |
| 62.50 | 51.74 ± 0.89b | ||
| 125.00 | 65.39 ± 0.44b | 30.38 | |
| 250.00 | 74.56 ± 0.54c | ||
| 500.00 | 84.62 ± 0.74c | ||
| AFMV | 31.25 | 27.30 ± 0.71a | |
| 62.50 | 39.29 ± 0.77b | ||
| 125.00 | 50.31 ± 0.42b | 146.61 | |
| 250.00 | 61.94 ± 1.02b | ||
| 500.00 | 76.11 ± 1.05c |
All results are presented as mean ± SEM (n=3). Two-way analysis of variance (ANOVA) followed by Bonferroni post-test was employed where aP<0.05, bP<0.01, cP<0.001, were considered as statistically significant compared with the control; AFMV, aqueous fraction of Merremia vitifolia leaves.