Table 1.
DPPH radical scavenging activity of the 70% ethanolic extract of Ainsliaea acerifolia and its n-hexane, EtOAc-, n-BuOH-, and H2O-soluble portions
| Conc. (mg/mL) | Inhibition (%)
| IC50 (µg/mL) |
| 1000 | 500 | 250 | 125 | 62.5 | 31.3 |
| 70% EtOH ext. | 90.2 | 89.0 | 87.6 | 66.3 | 40.8 | 19.8 | 81.4±7.4 |
| n-Hexane layer | 49.9 | 34.0 | 16.8 | 7.3 | 0.7 | 0.0 | >1000 |
| EtOAc layer | 94.0 | 93.2 | 89.4 | 77.6 | 55.6 | 35.3 | 51.4±3.0 |
| n-BuOH layer | 93.9 | 91.8 | 85.1 | 68.4 | 46.0 | 27.4 | 70.1±2.7 |
| H2O layer | 84.1 | 74.9 | 61.2 | 43.7 | 24.3 | 7.3 | 180.3±13.7 |
| (+)-Catechin1) | 92.2 | 88.1 | 87.8 | 87.6 | 83.8 | 75.0 | 13.0±1.0 |
Used as a positive control.