Table 3.
Antimicrobial activity of H. cordata essential oil against microorganisms.
| Test strains | DMSO | Ampicillin | H. cordata essential oil | ||
|---|---|---|---|---|---|
| (mm)* | (mm)* | (mm)* | MIC (µg/mL) |
MBC/MFC (µg/mL) |
|
| Staphylococcus aureus | ND | 26.9 ± 0.2a | 15.9 ± 0.9b | 3.125 | 6.25 |
| Staphylococcus epidermidis | ND | 12.1 ± 3.3a | 15.5 ± 0.4a | 12.5 | 25.0 |
| Cutibacterium acnes | ND | 24.1 ± 3.0a | 11.6 ± 0.6b | 12.5 | 25.0 |
| Candida albicans | ND | 10.3 ± 0.6b | 16.0 ± 1.6a | 3.125 | 6.25 |
*Inhibition zone, values are means of triplicate determination (n = 3) ± standard deviations; ND, no zone of inhibition was detected. Different letters indicate a significant difference in the clear zone diameter between Ampicillin and the H. cordata essential oil at a significance level of p < 0.05.