Table 4.
Average lag phase durations, mean maximum growth rates, and mean maximum optical densities of L. monocytogenes HL06CIP4 and its mutant HL06CIP4Δlde in BHI broth with and without BC.
| Growth parametera | Medium | Strain |
|
|---|---|---|---|
| HL06CIP4 | HL06CIP4Δlde | ||
| Lag-phase duration (h) | BHI | 3.050 ± 0.406 | 2.905 ± 0.301 |
| BHI + BC | 4.030 ± 0.225 | 4.389 ± 0.135 | |
| Mean maximum growth rate ± SD (OD600 units/h) | BHI | 0.209 ± 0.035 | 0.184 ± 0.014 |
| BHI + BC | 0.180 ± 0.018 | 0.141 ± 0.008 | |
| Mean maximum optical density ± SD (OD600 units) | BHI | 0.988 ± 0.048 | 1.016 ± 0.011 |
| BHI + BC | 0.977 ± 0.010 | 0.938 ± 0.035 | |
aThe statistical significances of differences between the growth parameters of HL06CIP4Δlde and those of HL06CIP4 were tested using two-tailed t-test (Microsoft Excel 2010).