Table 2.
Inhibition zone (mm) of essential oils against MDR bacteria at AAU, 2018
| Medicinal plant | Con (μl/ml) | μl/disc | Gram positive | Gram negative | ||||
|---|---|---|---|---|---|---|---|---|
| MSSA | MRSA | E. coli | K. pneumoniae | |||||
| R | S | R | S | |||||
| T.schimper | 100 | 10 | 16 ± 0.9 | 16 ± 0.4 | 11 ± 0.4 | 10 ± 0.7 | 17 ± 0.4 | 17 ± 1.2 |
| 100 | 20 | 21 ± 0.6* | 21 ± 0.3 | 17 ± 0.4 | 13 ± 0.1 | 24 ± 0.2# | 24 ± 1.0 | |
| B. cuspidata | 100 | 10 | 19 ± 0.3 | 19 ± 0.2 | 15 ± 1.3 | 11 ± 0.3 | 19 ± 0.3 | 18 ± 0.2 |
| 100 | 20 | 22 ± 0.6* | 25 ± 0.1 | 19 ± 0.8 | 15 ± 0.1 | 23 ± 0.3# | 23 ± 0.9 | |
| B. ogadensis | 100 | 10 | 13 ± 0.8 | 12 ± 0.1 | 9 ± 0.2 | 8 ± 0.7 | 17 ± 0.9 | 17 ± 0.3 |
| 100 | 20 | 19 ± 0.8 | 17 ± 0.3 | 14 ± 0.2 | 14 ± 0.2 | 20 ± 0.6 | 21 ± 0.9 | |
| Positive control | Cefoxitin | S | R | – | – | – | – | |
| Gentamicin | – | – | R | S | R | S | ||
| Ceftriaxone | – | – | R | S | R | S | ||
| Negative control (5% DMSO) | N | N | N | N | N | N | ||
The values represent mean ± standard deviation, N NO inhibition zone, R Resistant (≤16 mm IZ), S Susceptible (≥ 21 mm IZ). Where, *P < 0.05when compared to cefoxitin treated MRSA. While, #P < 0.05 when compared to modern drug treated K. pneumoniae