Table 1.
Antioxidant effect (EC50) on DPPH radicals, superoxide radicals, total antioxidant capacity and hydroxyl radicals of methanol extract and soluble fractions of C. opaca leaves
| Plant extracts | EC50, µg/ml | |||
|---|---|---|---|---|
| Scavenging ability on DPPH radicals | Scavenging ability on superoxide radicals | Total antioxidant capacity | Scavenging ability on hydroxyl radicals | |
| MLC | 58 ± 1.6c | 93 ± 1.92b | 30 ± 1.5b | 22 ± 1.4b |
| HLC | 358 ± 4.92e | 135 ± 3.6c | >250e | 22 ± 1.3b |
| ELC | 444 ± 4.11f | 206 ± 4.23e | >250e | 18 ± 0.7a |
| CLC | >500g | 132 ± 3.6c | >250e | 18 ± 1.1a |
| BLC | 170 ± 2.7d | 229 ± 5.4f | 156 ± 3.9d | 18 ± 0.9a |
| ALC | 38 ± 1.33b | 159 ± 2.45d | 81 ± 2.7c | 18 ± 0.89a |
| Ascorbic acid | 16 ± 1.6a | 21.86 ± 1.3a | 22 ± 1.8a | 30 ± 1.1c |
| Rutin | 18 ± 1.19a | – | – | – |
–, Not determined
Each value in the table is represented as mean ± SD (n = 3)
Values in the same column followed by a different letter are significantly different (p < 0.05)