Table 6.
Results of in vitro antioxidant activity of aqueous and organic extracts of the aerial part of Haloxylon scoparium via five tests: H2O2, DPPH, ABTS, FRAP, and PR.
| Extracts | H2O2 (%) | DPPH (IC50) | ABTS (ug E AA/mg E) | FRAP (ug E T/mg E) | PR (ug E AA/mg E) | |
|---|---|---|---|---|---|---|
| Aqueous extracts | Decocted | 16.21 ± 0.39a | 439.3 ± 7.74a | 8.20 ± 0.01a | 37.66 ± 1.29a,g | 21.89 ± 1.04a |
| Infused | 8.78 ± 0.41b.e | 518.96 ± 5.66b | 5.14 ± 0.37a,d | 27.94 ± 1.08a,b,g | 14.09 ± 0.74a | |
| Macerated | 4.15 ± 0.43c | 582.8 ± 14.72c | 3.99 ± 0.26a,d | 17.81 ± 3.50b,g | 6.63 ± 0.40a | |
|
| ||||||
| Organic extracts | Methanol | 20.91 ± 0.27d | 39.63 ± 2.03d | 50.75 ± 0.72b | 163.37 ± 1.52c | 116.18 ± 8.19b |
| Macerated methanol | 7.36 ± 0.09e | 57.87 ± 1.50d,e | 47.71 ± 1.21b | 124.08 ± 6.97d | 110.11 ± 7.47b | |
| Ethyl acetate | 7.26 ± 0.11e | 62.27 ± 1.82d,e | 39.74 ± 1.41c | 106.14 ± 5.26e | 79.27 ± 4.78c | |
| Chloroform | 5.84 ± 0.39e,f | 72.00 ± 1.88e | 36.99 ± 1.34c | 85.02 ± 2.96f | 59.35 ± 0.65c | |
| Petroleum ether | 5.76 ± 0.4e,f,c | 297.8 ± 1.15f | 1.72 ± 0.53d | 24.51 ± 0.53g | 0.96 ± 0.3a | |
|
| ||||||
| Reference standards | Ascorbic acid | 14.35 ± 0.002g | 0.17 ± 0.02g | — | — | — |
| BHT | 1.59 ± 0.13g | |||||
| Trolox | 1.75 ± 0.09g | |||||
All results expressed are mean of three individual replicates (n = 3 ± SEM). Values with the same letter superscript in the same row are not significantly different (p < 0.05).