| Concentration (µg/ml) | Metal chelating activity | |
| Phloretin (%) | Standard ascorbic acid (%) | |
| 20 | 20.61 ± 5.92 | 35.23 ± 2.81 |
| 40 | 42.76 ± 5.65 | 65.21 ± 5.28 |
| 60 | 73.07 ± 5.11 | 78.51± 6.28 |
| 80 | 89.23 ± 4.85 | 98.65 ± 7.89 |
|
| IC50 = 44.59 µg/ml | IC50 = 30.9 µg/ml |