Table 4.
Inhibition percentage of DPPH free radical by rosmarinic acid
| Concentration (μg/ml) | Inhibition (%) |
|---|---|
| 100 | 95.58 |
| 25 | 88.67 |
| 10 | 67.72 |
| 5 | 20.15 |
| 2.5 | 17.32 |
| 1 | 12.79 |
| 0.5 | 9.39 |
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