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Antioxidant activities of fractionations of different polarities and target-separated antioxidants in DPPH radical assay.
| Samples | DPPH (IC50, μM) |
|---|---|
| Petroleum ether fraction | >100 |
| Ethyl acetate fraction | 32.9 ± 0.3 |
| n-BuOH fraction | 74.5 ± 0.6 |
| Galangin | 4.2 ± 0.03 |
| Kaempferide | 7.8 ± 0.04 |
| Rutina | 3.9 ± 0.03 |
aUsed as control.
