Table 1.
Minimal inhibitory concentration (MIC)50/90 and minimal bactericidal concentration (MBC)50/90 values of Rhodomyrtus tomentosa ethanol extract, purified rhodomyrtone, and synthetic rhodomyrtone against Streptococcus pneumoniae clinical isolates.
| Antibacterial agents | Antibacterial activity (µg/ml) | ||||
|---|---|---|---|---|---|
| S. pneumoniae clinical isolates | S. pneumoniae ATCC 700673 | ||||
| MIC50/MBC50 | MIC90/MBC90 | MIC range | MBC range | MIC/MBC | |
| Ethanol extract | 64/128 | 128/512 | 16–256 | 16–512 | 32/128 |
| Purified rhodomyrtone | 0.50/1 | 2/4 | 0.125–4 | 0.125–4 | 0.50/1 |
| Synthetic rhodomyrtone | 0.50/2 | 2/4 | 0.125–4 | 0.25–4 | 1/4 |
| Erythromycin | 0.03/0.03 | 0.25/0.50 | 0.03–2 | 0.03–4 | 0.125/0.25 |