Table 2.
Zones of growth inhibition caused by the tested extracts and clinically used antibiotics against H. pylori 8064.
| Antimicrobial Compound | Dose | Growth Inhibition Zone (mm) |
|---|---|---|
| Tested plant extracts | ||
| A4/2 | 1 mg | 22.7 ± 2.5 |
| A5/1 | 1 mg | 30.7 ± 0.6 |
| A5/2 | 1 mg | 28 ± 1 |
| Antibiotics | ||
| CLR | 15 µg | 11.3 ± 1.5 |
| LEV | 5 µg | 6 |
| MTZ | 5 µg | 6 |
| AMX (a positive control) | 25 µg | 55.7 ± 2.1 |
| Empty disk (a negative control) | - | 6 |
The abbreviations of antibiotic disks used: CLR, clarithromycin; LEV, levofloxacin; MTZ, metronidazole; AMX, amoxicillin.