| Concentration (µg/ml) | Total antioxidant activity | |
| Phloretin (%) | Standard ascorbic acid (%) | |
| 20 | 22.13 ± 1.54 | 22.35 ± 1.80 |
| 40 | 42.56 ± 3.15 | 51.23 ± 4.09 |
| 60 | 69.65 ± 4.87 | 72.54 ± 5.80 |
| 80 | 89.32 ± 6.23 | 86.35 ± 6.91 |
|
| IC50 = 44.83 µg/ml | IC50 = 42.40 µg/ml |