Table 3.
Antimicrobial activity of reference compounds and essential oils from leaves and flowers of mint samples. For abbreviations of mint samples, see Table 1.
| Mint EOs and Reference Compounds |
Helicobacter pylori ATCC 43504 | Clinical Helicobacter pylori Strains | ||||
|---|---|---|---|---|---|---|
| mg/L | ||||||
| MIC * | MBC | MIC50 | MIC90 | MIC Range | MBC Range | |
| MpAlL | 15.6 | 15.6 | 125 | 125 | 62.5–250 | 15.6–250 |
| MpGrL | 31.3 | 31.3 | 125 | 250 | 62.5–250 | 31.3–250 |
| MpGrF | 31.3 | 125 | 250 | 250 | 125–500 | 31.3–500 |
| MpMmL | 31.3 | 31.3 | 62.5 | 125 | 62.5–250 | 31.3–250 |
| MpMmF | 31.3 | 31.3 | 250 | 500 | 250–500 | 31.3–1000 |
| MpSwL | 15.6 | 62.5 | 31.3 | 125 | 31.3–125 | 31.3–125 |
| MpSwF | 15.6 | 62.5 | 250 | 500 | 125–500 | 62.5–500 |
| MsMoL | 31.3 | 31.3 | 62.5 | 62.5 | 31.3–125 | 31.3–125 |
| MsMoF | 15.6 | 15.6 | 62.5 | 62.5 | 31.3–125 | 15.6–125 |
| Menthol | 62.5 | 250 | 7.8 | 31.3 | 7.8–31.3 | 7.8–250 |
| Menthone | 250 | 250 | 1000 | 1000 | 250–>1000 | 250–>1000 |
| Linalool | 125 | 250 | 125 | 250 | 62.5–500 | 62.5–500 |
| 1,8-Cineole | 125 | 250 | >1000 | >1000 | >1000 | 250–>1000 |
| Limonene | 62.5 | 125 | 500 | 1000 | 250–1000 | 125–1000 |
| (R)-(−)-Carvone | 62.5 | 125 | 31.3 | 62.5 | 15.6–125 | 31.3–125 |
| Dihydrocarvone (E + Z) | 125 | 125 | 500 | 1000 | 125–1000 | 125–1000 |
| Metronidazole | 31.3 | 31.3 | 7.8 | 31.3 | 1.95–250 | 7.8–250 |
* MIC—minimum inhibitory concentration, MBC—minimum bactericidal concentration, MIC50 and MIC90—the minimum concentration at which 50% and 90% of the isolates were inhibited, respectively.