Table 4.
Free radical scavenging and total antioxidant activities of A. mellifera (AM) five fractions.
| AM fractions | Radical scavenging activity (%) (DPPH) |
Total antioxidant activity (%) (BCBT) |
|||
|---|---|---|---|---|---|
| 25 (µg/mL) | 50 (µg/mL) | 100 (µg/mL) | 500 (µg/mL) | 500 (µg/mL) | |
| Hexane | —** | — | 4.017 ± 0.07* | 6.83 ± 0.05 | 55.51 ± 0.98 |
| Dichloromethane | 8.97 ± 1.24 | 10.15 ± 1.15 | 27.90 ± 1.87 | 44.39 ± 0.04 | 69.75 ± 1.12 |
| Ethyl acetate | 30.00 ± 0.04 | 44.167 ± 1.03 | 65.83 ± 1.08 | 86.66 ± 1.81 | 78.16 ± 1.03 |
| n-Butanol | 20.51 ± 1.34 | 38.20 ± 0.07 | 62.53 ± 0.42 | 77.50 ± 0.14 | 72.33 ± 0.81 |
| Aqueous | — | 0.67 ± 0.05 | 7.25 ± 0.02 | 38.87 ± 1.06 | 62.30 ± 0.57 |
| Ascorbic acid | 90.97 ± 0.07 | 92.13 ± 0.28 | 92.15 ± 0.06 | 92.40 ± 0.32 | — |
| Gallic acid | — | — | — | — | 87.12 ± 1.05 |
* Mean ± standard error of mean (SEM) for triplicate experiments.
**Not available.