TABLE 1.
Growth parameters of E. coli O157:H7 growing in TSB containing 1.6% (vol/vol) ethanol or 0.16 mg/ml thymol, carvacrol, or trans-cinnamaldehyde
| Treatmenta | Growth parameterb |
|||
|---|---|---|---|---|
| Initial cell density (log CFU/ml) | Lag phase duration (h) | Maximum growth rate (h−1) | Final cell density (log CFU/ml) | |
| Control | 5.2 ± 0.3 AB | 1.4 ± 0.4 A | 1.0 ± 0.1 A | 9.4 ± 0.1 A |
| 1/2T | 4.9 ± 0.2 A | 6.0 ± 0.4 B | 0.7 ± 0.1 B | 8.5 ± 0.2 B |
| 1/2C | 5.0 ± 0.2 A | 6.9 ± 0.9 B | 0.7 ± 0.1 B | 8.6 ± 0.3 B |
| 1/2TC | 5.5 ± 0.2 B | 8.5 ± 1.1 C | 0.7 ± 0.1 B | 9.3 ± 0.1 A |
a
Control, ethanol; 1/2T, 0.16 mg/ml thymol; 1/2C, 0.16 mg/ml carvacrol; 1/2TC, 0.16 mg/ml trans-cinnamaldehyde.
b
Different uppercase letters in the same column represent statistically significant differences (P < 0.05) between control and adapted cells.