Table 2.
The antioxidant activity of test substances for hydroxyl radical
| Test substance | Conc. µg/ml | IC50 (µg/ml) |
|---|---|---|
| Piper betel leaf extract | 1000 | >1000 |
| 500 | ||
| 250 | ||
| 125 | ||
| 62.5 | ||
| Eugenol | 1000 | 306.44±5.28 |
| 500 | ||
| 250 | ||
| 125 | ||
| 62.5 |
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