Table 2.
ABTS radical scavenging activity of the alcoholic and aqueous extracts of Z. mucronata subsp. mucronata
| % inhibitions of ABTS+ ± SD at different concentrations of the extracts | ||||||
|---|---|---|---|---|---|---|
| Extracts | 0.02 (mg/ml) | 0.04 (mg/ml) | 0.06 (mg/ml) | 0.08 (mg/ml) | 0.1 (mg/ml) | IC50 (mg/ml) |
| Aqueous | 23.95 ± 0.02a | 43.49 ± 0.06b | 72.96 ± 0.02c | 82.05 ± 0.03d | 88.96 ± 0.02e | 0.0429 ± 0.04 |
| Acetone | 42.13 ± 0.05a | 52.47 ± 0.03b | 75.64 ± 0.04c | 92.48 ± 0.04d | 97.71 ± 0.03e | 0.0317 ± 0.04 |
| Ethanol | 43.10 ± 0.03a | 54.85 ± 0.04b | 82.76 ± 0.04c | 93.76 ± 0.02d | 95.73 ± 0.02e | 0.0306 ± 0.04 |
| BHT | 33.31 ± 0.02a | 54.27 ± 0.02b | 79.06 ± 0.02c | 91.05 ± 0.05d | 93.47 ± 0.03e | 0.0343 ± 0.02 |
Data are presented as means ± standard deviation of three replicate with significant increases from all samples tested. Superscript a, b, c, d and e showed that means ± standard deviation in the same row with different superscript are significantly different (p < 0.05)