Table 3.
Antimicrobial activity of Dittrichia viscosa essential oil by microdilution assay.
| Species | Strain Origin | Essential Oil (mg/mL) a | |
|---|---|---|---|
| MIC | MBC | ||
| Gram-positive bacteria | |||
| Staphylococcus aureus | ATCC 29213 | 2.8 | 2.8 |
| Staphylococcus aureus | Clinical/MRSA | 5.6 | 5.6 |
| Staphylococcus epidermidis | Human | 1.4 | 1.4 |
| Streptococcus pyogenes | ATCC 19615 | 0.09 | 0.09 |
| Streptococcus agalactiae | Clinical | 0.09 | 0.09 |
| Enterococcus faecalis | ATCC 29212 | 1.4 | 2.8 |
| Listeria monocytogenes | ATCC 19111 (1/2a) | 2.8 | 2.8 |
| Bacillus cereus | Food | 0.7 | 0.7 |
| Clostridium perfringens | Food | 0.09 | 0.09 |
| Gram-negative bacteria | |||
| Escherichia coli | ATCC 25922 | 2.8 | 2.8 |
| Acinetobacter baumannii | ATCC 19606 | 5.6 | 5.6 |
| Yeast | MIC50 | MIC90 | |
| Candida albicans | ATCC 90029 | 2.8 | 5.6 |
| Molds | MIC50 | MIC90 | |
| Aspergillus niger | Food | 0.09 | 5.6 |
a Two-fold dilutions of essential oil were tested in a range from 22.5 to 0.02 mg/mL by the microdilution method.