Table 2.
Effect of crude extract and solvent fractions of R. anthopogonoides on different free radical scavenging assays
| Extract/fractions | EC50 value (μg/ml) of radical scavenging | ||||
|---|---|---|---|---|---|
| DPPH racidal | ABTS radical | Superoxide radical | Hydroxyl radical | Nitric oxide radical | |
| Crude extract | 63.73 ± 0.95d | 69.96 ± 0.92c | 483.00 ± 2.65d | 204.65 ± 4.26c | 197.38 ± 4.25d |
| Hexane | 259.65 ± 13.04e | 168.64 ± 2.50d | >1000 | 468.93 ± 16.17f | >1000 |
| Ethyl acetate | 61.78 ± 0.11c | 53.36 ± 0.53b | 433.33 ± 7.68b | 240.39 ± 2.50d | 183.83 ± 2.34c |
| n-butanol | 53.11 ± 0.12b | 71.32 ± 0.50c | 270.67 ± 0.58a | 145.87 ± 0.83b | 151.34 ± 3.67b |
| water | 278.35 ± 1.4e | 345.22 ± 12.62e | >1000 | 232.95 ± 2.87e | >1000 |
| Ascorbic acid | 30.39 ± 0.23a | 18.51 ± 0.13a | 450.32 ± 6.28c | 50.73 ± 1.83a | 126.72 ± 7.24a |
Each value represents as mean ± SD of triplicate experiments. Values in the same column followed by a different letter (a–f) are significantly different (p < 0.05)