Table 3.
DPPH radical scavenging activity of extracts
| Scientific name | SC50 (μg/ml)a value for DPPH radical scavenging activity | |
|---|---|---|
| 70% Ethanol extract | Water extract | |
| A. precatorius | 13.66 ± 0.12 | 20.93 ± 3.54 |
| A. nilotica | 4.06 ± 0.09 | 7.51 ± 0.19 |
| B. linariifolia | 105.05 ± 2.59 | 336.73 ± 4.49 |
| B. papyrifera | 120.53 ± 3.09 | 301.53 ± 0.48 |
| C. ipecacuanha | 251.28 ± 4.57 | 359.18 ± 2.89 |
| C. colocynthis | 507.67 ± 8.69 | 698.20 ± 9.68 |
| C. sinensis | 316.24 ± 8.83 | 301.5 ± 10.91 |
| C. proximus | 201.88 ± 0.03 | 333.99 ± 3.54 |
| C. rotundus. | 142.23 ± 5.88 | 270.64 ± 9.62 |
| G. alata | 73.68 ± 3.11 | 137.66 ± 1.31 |
| M. annua | 31.65 ± 0.69 | 281.94 ± 2.65 |
| P. glaucum | 127.84 ± 5.14 | 257.19 ± 2.08 |
| R. graveolens | 187.24 ± 1.50 | 362.04 ± 0.93 |
| S. argel | 334.35 ± 6.01 | 411.42 ± 7.03 |
| T. bakis | 278.04 ± 3.92 | 438.37 ± 2.99 |
| T. foenum-graceum | 285.58 ± 2.22 | 455.84 ± 4.69 |
| V. madagascariensis | 463.87 ± 5.21 | 552.27 ± 11.86 |
| Z. spina-christi | 10.75 ± 0.08 | 36.01 ± 3.60 |
| Troloxb | 11.35 ± 0.05 | |
aEach value represents the mean ± SD (n = 3)
bTrolox was used as a positive control