Table 2.
Antioxidant activity (DPPH and ABTS radical scavenging assay) of Bio Rayeb.
| Time | Treatment | (DPPH) IC50 (µl/ml) | (ABTS) IC50 (µg/ml) | Total phenolic content (µg GAE/g) |
|---|---|---|---|---|
| Ascorbic acid | 11.16 ± 0.43 | 11.60 ± 1.49 | – | |
| Day one | C | 134.23 ± 0.92d | 146.60 ± 0.85b | 204.02 ± 5.16a |
| T1 | 224.91 ± 1.65b | 100.69 ± 1.13f. | 146.87 ± 4.42d | |
| T2 | 287.28 ± 0.49a | 160.53 ± 0. 50a | 150.17 ± 6.37d | |
| 21 days | C | 131.33 ± 1.15e | 143.33 ± 0.57c | 194.82 ± 0.78b |
| T1 | 130.95 ± 0.93e | 116.28 ± 1.45d | 165.34 ± 9.98c | |
| T2 | 182.57 ± 0.51c | 113.85 ± 0.79e | 173.54 ± 5.98c |
IC50: effective concentration, which achieves 50% DPPH radical scavenging activity. ABTS· + radical assay expressed as percentage activity as a function of the concentration of bio rayeb, GAE/g: phenolic content expressed as milligrams of gallic acid equivalents per gram. Each reported value is the mean ± SE of three replicates. Means in the same column followed by different letters are significantly different (p < 0.05).