Table 2.
In vitro radical-scavenging activities for each fraction isolated from ethanol extract of Lysimachia christinae Hance
| Fraction/standard antioxidants | IC50 (mg/mL) | |||
|---|---|---|---|---|
| DPPH radical-scavenging activity | ABTS radical-scavenging activity | Superoxide anion radical-scavenging activity | Hydroxyl radical-scavenging activity | |
| PE fraction | 0.043 | 2.586 | *** | 0.451 |
| EA fraction | 0.029 | 1.49 | 0.608 | 0.288 |
| NB fraction | 0.026 | 1.288 | 0.191 | 0.214 |
| AQ fraction | 0.056 | 3.712 | 0.801 | 0.763 |
| BHT | 0.023 | – | – | – |
| TROLOX | – | 1.471 | – | – |
| VC | – | – | 0.118 | 0.187 |
BHT, TROLOX and VC acted as positive control. ***: Cannot be detected;----: Not used as reference. PE petroleum ether, EA ethyl acetate, NB n-butanol, AQ aqueous, DPPH Diphenylpicrylhydrazyl, ABTS 2,2′-azino-bis(3- ethylbenzothiazoline-6-sulphonic acid)