Table 1.
Antioxidant activity of T. terrestris standard extract (TtSE), T. terrestris saponins-enriched extract (TtEE) and positive control (PC) Gallic acid (100 µg/ml), as assessed by DPPH test
| Extract | Concentration (µg ml-1) |
Antioxidant activity (%) |
|---|---|---|
| 250 | 27.22±2.91a | |
| TtSE | 500 | 36.14±1.04a |
| 1000 | 54.45±3.90b | |
| TtEE | 250 | 45.97±4.31b |
| 500 | 66.48±3.14c | |
| 1000 | 70.45±3.17c | |
| PC | 100 | 74.56±0.00c |
Mean and standard deviation followed by equal letters in the same column did not differ statistically as examined by the Tukey test (p≤0.05).