Table 3.
Antimicrobial activity of D. mucronata Royle essential oils
| Tested microbes | Leaves essential oil | Stem essential oil | Standard drugs | |||
|---|---|---|---|---|---|---|
| Zone of inhibition (mm) | MIC mg/mL | Zone of inhibition (mm) | MIC mg/mL | Zone of inhibition (mm) | MIC (mg/mL) | |
| A. flavus | – | – | – | – | 19.0 ± 0.60 | 0.86 ± 0.001 |
| A. niger | – | – | – | – | 20.7 ± 0.55 | 0.48 ± 0.001 |
| B. cereus | – | – | – | – | 21.7 ± 0.49 | 0.97 ± 0.0003 |
| C. albicans | 18.9 ± 0.20 | 2.44 ± 0.002 | 22.2 ± 0.01 | 0.98 ± 0.005 | 23.8 ± 0.67 | 0.25 ± 0.0001 |
| E. coli | 8.88 ± 0.01 | 11.2 ± 0.40 | – | – | 25.26 ± 0.3 | 0.46 ± 0.0002 |
| N. moscoviensis | – | – | – | – | 22.9 ± 0.43 | 0.39 ± 0.0007 |
| S. aureus | – | – | – | – | 30.0 ± 0.32 | 0.25 ± 0.0001 |
| S. epidermidis | – | – | – | – | 23.4 ± 0.50 | 0.33 ± 0.0003 |
Values are mean ± S.D of three separate experiments (P < 0.05)
Rifampicin and fungone were used as standards for bacterial and fungal strains respectively