Table 3.
Minimum inhibitory concentration in the absence or presence of PAβN and natural products showing activity of natural products with different antibiotics and TPP against the drug-resistant (wild-type) strain of Escherichia coli
| MIC (mg/L) |
||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PAβN (mg/L) |
Plumbagin (mg/L) |
NDGA (mg/L) |
Shikonin (mg/L) |
|||||||||||||
| 0 | 50 | 100 | 200 | 0 | 16 | 32 | 64 | 0 | 64 | 128 | 256 | 0 | 64 | 128 | 256 | |
| Erythromycin | 256 | 128 | 64 | 32 | 256 | 256 | 128 | 64 | 256 | 256 | 256 | 64 | 256 | 256 | 256 | 256 |
| Chloramphenicol | 4 | 2 | 2 | 2 | 4 | 4 | 2 | 2 | 4 | 4 | 2 | 1 | 4 | 4 | 4 | 4 |
| Novobiocin | 512 | 256 | 128 | 128 | 512 | 512 | 512 | 512 | 512 | 512 | 512 | 64 | 512 | 512 | 512 | 512 |
| TPP | 1024 | 512 | 512 | 512 | 1024 | 512 | 512 | 256 | 1024 | 1024 | 128 | 64 | 1024 | 512 | 512 | 64 |
| Tetracycline | 1 | 1 | 1 | 0.5 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 0.25 | 1 | 1 | 1 | 1 |
| Nalidixic acid | 2 | 0.5 | 0.5 | 0.5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |