TABLE 3.
Luciferase activities of 3-day-old L. casei cultures diluted in fresh mediuma
| Culture diluted (1:10) in MRS
|
Culture diluted (1:10) in MRS+Rif
|
|||||
|---|---|---|---|---|---|---|
| log CFU/ml (T = 0 to 3 h 30 min) | log μRLU/CFU (T = 0 h) | log μRLU/CFU (T = 2 h) | log μRLU/CFU (T = 3 h 30 min) | log CFU/ml (T = 0 to 3 h 30 min) | log μRLU/CFU (T = 0 to 3 h 30 min) | |
| ldhp | 8.32 ± 0.1 | nd | 1.32 ± 0.1 | ND | 8.20 ± 0.3 | nd |
| lacTp* | 8.33 ± 0.2 | nd | 1.67 ± 0.2 | 1.8 ± 0.2 | 8.30 ± 0.1 | nd |
| ccpAp | 8.14 ± 0.2 | nd | nd | 0.6 ± 0.1 | 8.00 ± 0.3 | nd |
| dltp | 8.40 ± 0.2 | nd | nd | 0.7 ± 0.1 | 8.30 ± 0.1 | nd |
a
Three-day-old culture samples were incubated at 37°C after dilution (1:10) in prewarmed MRS medium supplemented or not with rifampin. Bacterial counts and luminescence determinations were conducted over 4 h postdilution. The results are presented as the means ± standard errors of the means. nd, not detected; ND, not done.