Table 2 Minimal inhibitory concentration (MIC) of C. khasianus essential oil (CKEO) and streptomycin alone and in combinations against E. coli
Strain |  | MIC (alone) | MIC (μg/mL) combination | Fold reduction | Fractional inhibitory concentration index (FICI) | Result |
|---|---|---|---|---|---|---|
E. coli | Streptomycin | 0.011 | 0.0007 | 16 | 0 .316 | Synergy |
CKEO | 20 | 5 | 4 | |||
Ciprofloxacin | 0.1875 | 0.0937 | 2 | 0.531 | Partial Synergy | |
CKEO | 20 | 0.625 | 32 |