Research Article

In Vitro Antioxidant Activities of Methanolic Extracts of Caesalpinia volkensii Harms., Vernonia lasiopus O. Hoffm., and Acacia hockii De Wild

Table 4

In vitro hydroxyl radical scavenging activities of methanolic extracts of C. volkensii, V. lasiopus, and A. hockii.

Hydroxyl radical scavenging activity (% inhibition)
Concentration in mg/mlL-ascorbic acidC. volkensiiV. lasiopusA. hockii

0.062587.50 ± 1.30aA66.99 ± 0.32aD73.93 ± 0.91aC81.52 ± 0.28aB
0.12580.56 ± 0.65bA56.41 ± 0.37bD61.75 ± 0.83bC73.56 ± 0.28bB
0.2573.29 ± 2.03cA46.69 ± 0.36cD53.74 ± 0.65cC63.14 ± 0.56cB
0.562.39 ± 0.39dA40.71 ± 0.56dD47.22 ± 0.21dC50.86 ± 0.39dB
150.64 ± 0.68eA30.98 ± 0.28eD38.46 ± 0.56eC43.38 ± 0.28eB

IC501.050.110.230.49

The values are expressed as mean ± SEM. Values with the same uppercase superscript letter within the same row and those with the same lowercase subscript letter within the same column are not significantly different (, one-way ANOVA followed by Tukey’s test).