Table 3 |
||||||
| Minimum inhibitory and bacteriostatic concentrationsa | ||||||
| Extract | E. coli | B. subtilis | M. mycoides capri | |||
| MIC (mg/mL) | MBCb(mg/mL) | MIC (mg/mL) | MBCb(mg/mL) | MIC (mg/mL) | MBCb(mg/mL) | |
| Astragalus-Aq | >10 | N/A | >10 | N/A | >10 | N/A |
| Astragalus-ETOH | >10 | N/A | 0.001 | 0.001 | 1.0 | BC |
| Astragalus-Com | >50 | N/A | >50 | N/A | >50 | N/A |
| Goldenseal-Aq | >10 | N/A | >10 | N/A | 0.05 | 0.5 |
| Goldenseal-ETOH | 1.0 | 1.0 | 1.0 | BC | 1.0 | 1.0 |
| Goldenseal-Comc | 0.1 | BC | >1 | N/A | >1 | N/A |
| Elderberry-G | 0.0038 | 0.0038 | 3.8 | 3.8 | 0.38 | 0.38 |
| Elderberry-365 | 0.1 | BC | >10 | N/A | 0.001 | BC |
| Oregano-LE | 0.033 | BC | 0.00033 | BC | 0.033 | BC |
| Oregano oil | 0.167 | BC | 0.0167 | BC | 0.092 | 0.167 |
| Thyme | 1.0 | BC | >100 | N/A | 0.5 | BC |
| Calendula | >95 | N/A | >95 | N/A | >95 | N/A |
| Colloidal silver | >0.003 | N/A | 0.0003 | 0.0003 | >0.003 | N/A |
| Water | NI | N/A | NI | N/A | NI | N/A |
| 95 % Ethanol | NI | N/A | NI | N/A | NI | N/A |
| Olive oil | NI | N/A | NI | N/A | NI | N/A |
aN = 3 replicates; MIC/MBC concentrations reflect mean values across trials. Abbreviations: N/A (not applicable); BC (bactericidal); NI (no inhibition by solvents at the lowest dilution [1:10]). Efficacious compounds with a measureable inhibitory concentration or bactericidal activity are bolded.
bColumns marked N/A or BC indicate that MBCs could not be determined due to lack of inhibition (N/A) or bactericidal activity (BC).
cConcentration reflects total alkaloid content.
Arjoon et al. BMC Complementary and Alternative Medicine 2012 12:169 doi:10.1186/1472-6882-12-169
