TABLE 1.
DPPH free radical scavenging activity (%). The % of reduced DPPH radicals by Euphrasia officinalis L. extracts is compared to the control (0% reduction)
| Extract | Extract concentration (μg/mL) | % reduction as compared to control (0% reduction) | Reduction value, which correspond to the following Trolox concentration (μg/mL) |
|---|---|---|---|
| Ethanol | 25 | 5.76±0.27 | 1.898 |
| 75 | 34.54±0.6 | 12.55 | |
| 125 | 65.86±0.54 | 24.18 | |
| Ethyl acetate | 25 | 4.28±0.27 | 1.336 |
| 75 | 20.41±0.74 | 7.334 | |
| 125 | 39.09±0.47 | 14.24 | |
| Heptane | 25 | 0 | 0 |
| 75 | 0 | 0 | |
| 125 | 0 | 0 |