Table 2.
Antibacterial activities of EOs, GA, and nisin against S. mutans ATCC 25175 and three clinical isolates.
| Test compounds | S. mutans | |||||||
|---|---|---|---|---|---|---|---|---|
| ATCC 25175 | TLJ1-1 | TLJ1-2 | TLJ1-3 | |||||
| MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | |
| EOs (% v/v) | ||||||||
| FR | >0.8 | >0.8 | ||||||
| HB | >0.8 | >0.8 | ||||||
| KL | >0.8 | >0.8 | ||||||
| KLL | 0.8 | >0.8 | 0.1 | 0.2 | 0.8 | >0.8 | 0.4 | 0.4 |
| LG | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| GA (mg/mL) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Nisin (IU/mL) | >4,000 | >4,000 | >4,000 | >4,000 | >4,000 | >4,000 | 2,000 | 8,000 |
| Chlorhexidine (mg/mL) | 0.0156 | 0.0156 | 0.0125 | 0.0125 | 0.0125 | 0.0125 | 0.005 | 0.005 |
| Solventa | NE | NE | NE | NE | NE | NE | NE | NE |
aThe solvent was the mixture of 0.04% v/v Tween 80 and 0.03% v/v absolute ethanol in BHI. NE: no antibacterial effect.