Table 2.
Radical scavenging activities of O. sanctum fractions
| Extract/fraction | DPPH radical | Superoxide radical | Phosphomolybdate assay | Hydroxyl radical | ABTS radical |
|---|---|---|---|---|---|
| EC50 values (μg/ml) of radical scavenging | |||||
| OsM | 10.0 ± 0.5b | 7.32 ± 0.9a | 13.60 ± 0.9c | 5.30 ± 0.4a | 9.2 ± 0.7d |
| OsH | 17.75 ± 0.6d | 15.62 ± 0.8c | 15.35 ± 0.8c | 18.51 ± 0.5c | 6.4 ± 0.5b |
| OsE | 8.61 ± 0.6b | 16.50 ± 0.9c | 2.43 ± 0.1a | 14.30 ± 0.2b | 5.3 ± 0.4b |
| OsB | 3.91 ± 0.3a | 10.32 ± 0.6b | 2.31 ± 0.1a | 17.90 ± 0.3c | 1.6 ± 0.1a |
| OsR | 22.02 ± 0.8c | 18.36 ± 0.8d | 19.51 ± 0.9d | 35.30 ± 1.6d | 20.3 ± 0.9e |
| Asc | 10.0 ± 0.3b | 6.8 ± 0.3a | 8.5 ± 0.5b | 6.0 ± 0.3a | 7.5 ± 0.1c |
Each value in the table is represented as mean ± SD (n = 3). Values in the same column followed by a different letter (a–e) are significantly different (P < 0.05). OsM (50% Methanol extract), OsH (n-Hexane fraction), OsE (Ethyl acetate fraction), OsB (n-Butanol fraction), OsR (Residue fraction), Asc (Ascorbic acid)