Table 5.
Antioxidant activities of the three extracts of H. laevigata var. hipponensis.
| Extract | β-Carotene IC50 (µg/mL) |
DPPH IC50 (µg/mL) |
ABTS+ IC50 (µg/mL) |
CUPRAC A0.50 (µg/mL) |
Fe+2 Chelation IC50 (µg/mL) |
|---|---|---|---|---|---|
| Dichloromethane | 5.02 ± 0.95 | 47.24 ± 0.11 | 13.10 ± 0.97 | 16.86 ± 3.02 | >800 |
| Ethyl acetate | 7.60 ± 4.37 | 8.70 ± 1.87 | 4.32 ± 0.09 | 1.48 ± 0.33 | >800 |
| n-Butanol | 5.66 ± 2.03 | 8.12 ± 1.47 | 15.02 ± 0.73 | 3.00 ± 0.98 | >800 |
| (+)-Catechin a | 8.79 ± 0.89 | 4.32 ± 0.15 | 1.16 ± 0.02 | NT | NT |
| Quercetin a | 1.81 ± 0.11 | 2.07 ± 0.10 | 1.18 ± 0.03 | NT | NT |
| α-Tocopherol a | 2.10 ± 0.08 | 7.31 ± 0.17 | 4.31 ± 0.10 | 10.20 ± 0.01 | NT |
| BHT a | 1.34 ± 0.04 | 45.4 ± 0.47 | 4.10 ± 0.06 | 3.80 ± 0.00 | NT |
| EDTA a | NT | NT | NT | NT | 6.50 ± 0.07 |
| Ascorbic acid a | NT | NT | NT | NT | NT |
a Standards compounds; NT: Not Tested.