Table 3.
Estimated model parameters of the Geeraerd et al. [25] model obtained following inactivation of the 1- and 7-day-old L. monocytogenes, S. Typhimurium, and dual-species model biofilms using the helium-operated DBD system. These model parameters have been discussed in detail in the studies of Govaert et al. [13,14].
| Single-Species L. monocytogenes 1-day-old |
Single-Specie L. monocytogenes 7-day-old |
Single-Species S. Typhimurium 1-day-old |
Single-Species S. Typhimurium 7-day-old |
Dual-Species 1-day-old |
Dual-Species 7-day-old |
|
|---|---|---|---|---|---|---|
| Log10 N0 general medium 5 (log(CFU/cm2)) | 7.15 ± 0.07 A | 6.15 ± 0.22 A | 6.43 ± 0.07 B | 5.86 ± 0.23 A | 5.95 ± 0.15 A | 5.98 ± 0.13 A |
| Log10 N0 PALCAM medium 5 (log(CFU/cm2)) | 7.15 ± 0.07 A | 6.22 ± 0.24 A | NA | NA | 5.30 ± 0.21 A | 5.09 ± 0.19 A |
| Log10 N0 XLD medium 5 (log(CFU/cm2)) | NA | NA | 6.14 ± 0.09 A | 5.40 ± 0.25 A | 5.63 ± 0.20 A | 5.69 ± 0.24 B |
| kmax general medium 5 (1/min) | 1.265 ± 0.142 B | 0.253 ± 0.057 A | 1.308 ± 0.154 B | 2.730 ± 0.785 B | 0.748 ± 0.117 A | 0.618 ± 0.072 A |
| kmax PALCAM medium 5 (1/min) | 1.735 ± 0.172 B | 0.278 ± 0.078 A | NA | NA | 1.118 ± 0.199 A | 0.756 ± 0.121 A |
| kmax XLD medium 5 (1/min) | NA | NA | 1.534 ± 0.198 B | 2.598 ± 0.687 B | 1.148 ± 0.233 B | 1.542 ± 0.331 A |
| Log10 Nres general medium 5 (log(CFU/cm2)) | 3.50 ± 0.13 A | 2.68 ± 1.71 | 2.97 ± 0.13 A | 3.47 ± 0.16 A | 3.00 ± 0.17 A | 2.65 ± 0.16 A |
| Log10 Nres PALCAM medium 5 (log(CFU/cm2)) | 2.94 ± 0.13 A | 3.50 ± 0.56 | NA | NA | 1.51 ± 0.23 A | 1.12 ± 0.24 A |
| Log10 Nres XLD medium 5 (log(CFU/cm2)) | NA | NA | 2.13 ± 0.16 A | 2.68 ± 0.17 B | 2.30 ± 0.20 A | 1.80 ± 0.23 A |
| Log-reduction general medium 5 (log(CFU/cm2)) | 3.64 ± 0.15 B | 3.47 ± 1.72 A | 3.46 ± 0.14 B | 2.38 ± 0.28 A | 2.95 ± 0.23 A | 3.32 ± 0.21 B |
| Log-reduction PALCAM medium 5 (log(CFU/cm2)) | 4.22 ± 0.15 B | 2.72 ± 0.61 A | NA | NA | 3.79 ± 0.31 B | 3.97 ± 0.31 B |
| Log-reduction XLD medium 5 (log(CFU/cm2)) | NA | NA | 4.01 ± 0.18 B | 2.72 ± 0.30 A | 3.33 ± 0.28 A | 3.89 ± 0.33 B |
| RMSE general medium (/) | 0.435 | 0.733 | 0.420 | 0.571 | 0.500 | 0.439 |
| RMSE PALCAM medium (/) | 0.433 | 0.762 | NA | NA | 0.704 | 0.658 |
| RMSE XLD medium (/) | NA | NA | 0.547 | 0.626 | 0.646 | 0.784 |
5 Influence CAP set-up (SBD-air versus DBD-helium): for each biofilm age, biofilm type, and population type, model parameters bearing different subscripts (no capital letters in common) are significantly different (p ≤ 0.05).