Table 2.
Antioxidant activities (EC50 and GEAC in μg/mL) of extracts and compound 2 from Prosopis africana.
| Extracts/compounds | DPPH free radical scavenging activity (EC50) | Gallic acid equivalent antioxidant capacity (GEAC) |
|---|---|---|
| MeOH extract | 93.66 ± 0.94a | 43.41 ± 0.79a |
| EtOAc extract | 77.56 ± 1.62b | 36.58 ± 84b |
| 2 | 5.67 ± 0.73c | 89.28 ± 0.74c |
| Vitamin C | 1.29 ± 0.33d | — |
EC50: equivalent concentrations of test samples scavenging 50% of DPPH radical. Data represent the mean ± SD of three independent experiments carried out in triplicate. In the same column, values earmarked by different superscript letters (a–d) are significantly different according to one-way ANOVA and Waller-Duncan test; p < 0.05.