Research Article
Chemical Constituents of Root Barks of Gnidia involucrata and Evaluation for Antibacterial and Antioxidant Activities
Table 3
DPPH radical-scavenging and antilipid peroxidation activities of extracts (EtOAc and MeOH) and isolated compounds (1 and 2).
| Samples | % DPPH inhibition | Antilipid peroxidation inhibition (%) | 100 μg/mL | 50 μg/mL | 25 μg/mL | 12.5 μg/mL |
| EtOAc extract | 70.7 ± 0.02 | 64.1 ± 0.04 | 57.5 ± 0.03 | 46.2 ± 0.05 | 84 ± 0.04 | MeOH extract | 66.9 ± 0.01 | 61.3 ± 0.02 | 54.7 ± 0.01 | 41.5 ± 0.10 | 45 ± 0.06 | Compound 1 | 85.8 ± 0.03 | 79.2 ± 0.05 | 73.4 ± 0.01 | 65.0 ± 0.02 | 86 ± 0.01 | Compound 2 | 52.8 ± 0.01 | 41.5 ± 0.01 | 34.9 ± 0.02 | 16.9 ± 0.03 | 33 ± 0.09 | Ascorbic acid | 90 ± 0.02 | | | | 87 ± 0.02 |
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Data are reported as mean ± SEM; ascorbic acid was used as a positive control.
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