Table 2.
Minimal inhibitory concentration (MIC) of tested bacterial organisms against R. crispus extracts.
| R. crispus extracts (mg/mL) | Gram-negative bacteria | Gram-positive bacteria | ||||||
|---|---|---|---|---|---|---|---|---|
| K. pneumoniae | P. aeruginosa | E. coli | V. cholerae | B. subtilis | S. aureus | S. pyogenes | B. cereus | |
| RT-MEE | <1.562 | 6.25 | 25 | <1.562 | <1.562 | <1.562 | <1.562 | <1.562 |
| RT-ETE | 1.562 | 1.562 | 25 | <1.562 | <1.562 | <1.562 | <1.562 | <1.562 |
| RT-ACE | <1.562 | <1.562 | <1.562 | <1.562 | <1.562 | <1.562 | <1.562 | <1.562 |
| RT-WAE | >25 | >25 | >25 | >25 | >25 | 12.5 | >25 | >25 |
| LF-MEE | <1.562 | 25 | 25 | <1.562 | 12.5 | 12.5 | 12.5 | 3.125 |
| LF-ETE | 25 | >25 | >25 | 25 | 25 | 25 | 25 | 25 |
| LF-ACE | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 |
| LF-WAE | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 |
| Erythromycin (μg/mL) | 8 | >8 | >8 | 8 | >8 | 2 | <0.5 | 1 |
RT-MEE: methanol extract of root; RT-ETE: ethanol extract of root; RT-ACE: acetone extract of root; RE-WAE: water extract of root; LF-MEE: methanol extract of leaf; LF-ETE: ethanol extract of leaf; LF-ACE: acetone extract of leaf; LF-WAE: water extract of leaf.