Table 2.
Minimum inhibitory concentration (MIC) by broth microdilution (µg/mL).
| Plant Part | Solvent |
S. aureus (ATCC 11632) |
B. subtilis (ATCC 6633) |
E. coli (ATCC 8379) |
P. aeruginosa (ATCC 10145) |
A. baumannii (Imipenem-Resistant) |
|---|---|---|---|---|---|---|
| Leaves | Hexane | 1000 | - | - | - | - |
| Leaves | Chloroform | 250 (>1000) | 250 (>1000) | - | - | - |
| Leaves | Methanol | 500 | 1000 | - | - | - |
| Bark | Hexane | - | - | - | 1000 | - |
| Bark | Chloroform | 1000 | - | - | - | - |
| Bark | Methanol | 250 (>1000) | - | 500 | 250 (>1000) | - |
| Wood | Hexane | 625 | 1250 | 5000 | 2500 | - |
| Wood | Chloroform | 2500 | 2500 | 2500 | 625 | - |
| Wood | Methanol | - | 2500 | 2500 | 2500 | - |
| Endocarp | Chloroform | - | - | - | 1000 | - |
| Endocarp | Methanol | - | - | - | 1000 | - |
| Seeds | Hexane | - | - | - | 1000 | - |
| Chloramphenicol | 0.03 | 0.02 | Nt | Nt | Nt | |
| Tetracycline | Nt | Nt | 0.02 | 0.01 | - | |
| Imipenem Negative control |
Nt Fg |
Nt Fg |
Nt Fg |
Nt Fg |
12.0 Fg |
|
Abbreviations: Nt, Not tested; Fg, Full bacterial growth; ‘-’, No activity. Extracts with no activity against all the bacteria tested are not included here in this table. Bold data indicate the lower MIC values. Values are given as the mean of triplicates. Second values in parentheses represent corresponding minimum bactericidal concentrations (MBC).