Table 3.
Antioxidant activities of the hydroacetonic crude extract and of the purified fractions from S. vulgare.
| Sample | DPPH• | ABTS•+ | Superoxide | Galvinoxyl | β-Carotene | CUPRAC | FRAP | Phenanthroline |
|---|---|---|---|---|---|---|---|---|
| IC50 (µg/mL) | A0.5 (µg/mL) | |||||||
| Crude Ext | 97.41 ± 2.15 a | 72.9 ± 5.83 b | >800 | 364.65 ± 0.93 a | 65.17 ± 0.68 b | 303.08 ± 3.59 a | >200 | >200 |
| Hex | 29.77 ± 1.72 b | 93.76 ± 2.28 a | 37.07 ± 1.72 a | 148.7 ± 1.74 b | 41.29 ± 1.37 d | 69.04 ± 5.65 b | 126.5 ± 3.43 b | 126.14 ±1.38 a |
| EtOAc | 25.83 ± 0.54 C | 25.07 ± 0.21 c | 27 ± 0.26 c | 15.33 ± 0.21 c | 72.05 ± 0.92 a | 37.79 ± 0.21 c | 64.63 ± 3.66 c | 32.3 ± 0.21 b |
| AQ | 96.64 ± 2.12 a | 74.9 ± 4.8 b | >800 | >800 | >800 | >800 | 251.8 ± 5.5 a | >200 |
| BHA * | 6.14 ± 0.41 e | 1.81 ± 0.10 d | >200 | 5.38 ± 0.06 d | 0.90 ± 0.02 f | 6.62 ± 0.05 e | 7.99 ± 0.87 e | 2.24 ± 0.17 d |
| BHT * | 12.99 ± 0.41 d | 1.29 ± 0.30 d | >200 | 3.32 ± 0.18 e | 1.05 ± 0.01 f | 8.97 ± 3.94 e | >200 | 0.93 ± 0.07 d |
| Tocopherol * | 13.02 ± 5.17 d | 7.59 ± 0.53 d | 31.52 ± 2.22 b | 22.02 ± 0.03 | 1.79 ± 0.03 f | 19.92 ± 1.46 d | 34.93 ± 2.38 d | 5.78 ± 030 |
| AA * | 13.94 ± 2.81 d | 1.74 ± 0.10 d | 7.5 9 ± 1.16 d | 5.02 ± 0.01 d | 52.59 ± 1.98 c | 13.43 ± 0.09 d | 6.37 ± 0.42 e | 5.25 ± 0.20 c |
* Reference compounds; AA—ascorbic acid; BHA—butylated hydroxyanisole; BHT—butylated hydroxytoluene; Tocopherol—α-Tocopherol; Crude Ext—crude extract; Hex—hexane fraction; EtOAc—ethyl acetate fraction; AQ—aqueous residue. Values are the means of three independent assays ± SD. Means followed by different letters in the same column are significantly different at p < 0.05.