Research Article
Influence of Gallic Acid and Thai Culinary Essential Oils on Antibacterial Activity of Nisin against Streptococcus mutans
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.
|
