Table 6.
Average inhibition zone diameter (mm) of various CS isolated essential oils (EO) against different bacterial strains using disc diffusion method, and the Minimum inhibitory concentration (mg/mL) on selected bacterial strain.
| Bacterial strains | Conventional CCH EO | DF-GC/MS-HUSb Prototype EO | Gentamicin 10 μg |
|---|---|---|---|
| Staphylococcus aureus | 11.5 ± 0.11 | 13.0 ± 0.12* | 26 ± 0.20 |
| MIC (mg/mL) | 3.125 ± 0.01 | 2.50 ± 0.20* | –a |
| Listeria monocytogenes | 8.0 ± 0.13 | 9.0 ± 0.12 | 26 ± 0.21 |
| MIC (mg/mL) | 12.5 ± 0.11 | 2.50 ± 0.23* | – |
| E.coli | – | 11.0 ± 0.12* | 21 ± 0.24 |
| MIC (mg/mL) | NA | 50.0 ± 0.29* | – |
| Pseudomonas aeruginosa | – | – | 19.0 ± 0.12 |
*Indicates significant difference between Conventional CCH and prototype methods (p < 0.05).
a–: Absence of inhibition zone.
bDual-function GC/MS optimized ultrasound-assisted hydrodistillation prototype.