Table 3.
In vitro DPPH radical scavenging activities of the aqueous and methanolic stem bark extracts of L. eriocalyx.
| Concentration (μg/ml) | Percentage DPPH radical scavenging activity |
||
|---|---|---|---|
|
L. eriocalyx |
L-Ascorbic acid | ||
| Aqueous extract | Methanolic extract | ||
| 0 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 |
| 0.01 | 51.57 ± 5.58bC | 52.09 ± 0.34bD | 67.11 ± 1.62aC |
| 0.1 | 68.27 ± 0.98aB | 54.27 ± 0.46bCD | 71.49 ± 0.88aC |
| 1 | 69.25 ± 2.04bB | 58.18 ± 1.69cCD | 79.55 ± 2.36aB |
| 10 | 77.48 ± 2.41bAB | 61.12 ± 3.03cC | 99.01 ± 0.01aA |
| 100 | 82.10 ± 3.00bAB | 68.97 ± 0.74cB | 99.08 ± 0.02aA |
| 1000 |
88.02 ± 0.36cA |
97.02 ± 0.09bA |
99.12 ± 0.01aA |
| IC50(μg/ml) | 0.010 | 0.0095 | 0.0098 |
Values are expressed as x̃±SEM; Values with the same lowercase superscript letter across the rows and uppercase superscript letter along the columns are not significantly different (p > 0.05; One-way ANOVA followed by Tukey's test).