Table 1.
Antimicrobial activity of different extracts of the lichen E. prunastri and usnic acid
| Samples | Minimum inhibitory concentration (MIC), µg/ml‡ | |||
|---|---|---|---|---|
| Staphylococcus aureus | Pseudomonas aeruginosa | Escherichia coli | Candida albicans | |
| E. prunastri (Hexane) | 21 ± 9(0.9) | 150 ± 41(0.8) | > 500 | 150 ± 50(0.2) |
|
E. prunastri (DCM) |
4 ± 1* | 167 ± 33(0.5) | 500 ± 1* | 150 ± 50(0.2) |
|
E. prunastri (60% ACN) |
14 ± 3(0.1) | 133 ± 33(1.0) | 250 ± 1(0.3) | 38 ± 13* |
| Usnic acid | 21 ± 9 | 133 ± 33 | 225 ± 25 | 100 ± 1 |
‡Data expressed as a mean ± SD (n = 3 for each experiment)
*p < 0.01 vs. usnic acid