Table 3.
ABTS+ radical scavenging activity of the 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. | 99.1 | 99.3 | 99.2 | 89.8 | 75.0 | 46.3 | 34.3±0.9 |
| n-Hexane layer | 94.6 | 70.8 | 40.4 | 20.6 | 12.6 | 4.7 | 291.0±20.1 |
| EtOAc layer | 99.5 | 99.5 | 99.4 | 99.3 | 99.1 | 86.0 | 19.9±2.3 |
| n-BuOH layer | 99.4 | 99.3 | 99.3 | 99.0 | 94.5 | 69.9 | 23.4±0.3 |
| H2O layer | 99.1 | 98.7 | 94.9 | 86.8 | 55.2 | 29.5 | 52.8±2.3 |
| (+)-Catechin1) | 99.9 | 99.9 | 99.9 | 99.8 | 99.7 | 99.6 | 2.3±0.2 |
Used as a positive control.