Table 1 Relationship between the minimal inhibitory concentration of benzalchonium chloride and the presence of disinfectant resistance genes qacH, qacA, qacB and qacC
Strains | State | MIC benzalchonium chloride (μg/ml) | Presence of genesa | |||
|---|---|---|---|---|---|---|
B240 | Caries-active | 0.50 | qacH+ | qacA− | qacB− | qacC− |
B226 | Caries-active | 2 | qacH− | qacA− | qacB− | qacC− |
B40 | Caries-active | 1 | qacH− | qacA− | qacB− | qacC− |
B290 | Caries-active | 32 | qacH− | qacA− | qacB− | qacC+ |
B374 | Caries-active | 128 | qacH− | qacA− | qacB− | qacC+ |
B285 | Caries-active | 8 | qacH− | qacA+ | qacB+ | qacC− |
B295 | Caries-active | 4 | qacH− | qacA− | qacB− | qacC− |
B230 | Caries-active | 2 | qacH− | qacA | qacB− | qacC− |
B621 | Caries-active | 2 | qacH−− | qacA− | qacB− | qacC− |
B136 | Caries-active | 8 | qacH− | qacA− | qacB− | qacC− |
B364 | Caries-active | 128 | qacH+ | qacA+ | qacB+ | qacC− |
B73 | Caries-active | 16 | qacH− | qacA+ | qacB+ | qacC− |
B456 | Caries-active | 4 | qacH− | qacA− | qacB− | qacC− |
B712 | Caries-active | 8 | qacH− | qacA− | qacB− | qacC− |
B398 | Caries-active | 4 | qacH+ | qacA− | qacB− | qacC− |
B401 | Caries-active | 1 | qacH− | qacA− | qacB− | qacC− |
B244 | Caries-active | 2 | qacH− | qacA− | qacB− | qacC− |
B147 | Caries-active | 2 | qacH+ | qacA− | qacB− | qacC− |
B193 | Caries-active | 2 | qacH− | qacA− | qacB− | qacC− |
B302 | Caries-free | 2 | qacH− | qacA− | qacB− | qacC− |
B289 | Caries-free | 8 | qacH− | qacA+ | qacB− | qacC− |
B291 | Caries-active | 16 | qacH+ | qacA+ | qacB− | qacC+ |