Table 4.
DPPH and ABTS activities of extracts
| Spices | DPPH assay (mg ascorbic acid eq/g spice) | ABTS assay (g trolox eq/100 g spice) | ||||
|---|---|---|---|---|---|---|
| Aqueous extracts | Ethanol/water (80/20: v/v) | Methanol/water/acetic acid (70/25/5: v/v/v) | Aqueous extracts | Ethanol/water (80/20: v/v) | Methanol/water/acetic acid (70/25/5: v/v/v) | |
| X. africana fruit | 165.8 ± 2.68d | 179.29 ± 3.48c | 182.24 ± 2.41c | 7.190 ± 0.003c | 1.294 ± 0.002d | 0.466 ± 0.013a |
| A. sulcatum fruit | 27.47 ± 1.60b | 44.44 ± 1.28a | 37.71 ± 0.36a | 0.529 ± 0.004b | 0.454 ± 0.004a | 2.628 ± 0.026d |
| A. sulcatum bulb | 16.43 ± 2.86a | 83.09 ± 2.33b | 72.56 ± 2.14b | 0.047 ± 0.002a | 0.381 ± 0.00b | 2.141 ± 0.026b |
| H. zenkeri bark | 159.18 ± 2.88c | 179.37 ± 0.33c | 180.86 ± 2.73c | 9.247 ± 0.004d | 0.939 ± 0.004c | 2.331 ± 0.066c |
Results were expressed as mean ± standard deviation
Superscript letters (a–d) represents the significant differences (p < 0.05) between the rows and within columns