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Antioxidant effect on free DPPH radicals and total antioxidant capacity.
| Plant name | DPPH radical scavenging ability (IC50, μg/mL) | Total antioxidant capacity (μmol AA/g extract) |
|---|---|---|
| N. jatamansi | 50 | 151 |
| S. vaginatum | 165 | 143 |
| Ascorbic acid (AA) | 2.3 | — |
