Table 3.
Logarithmic reduction (Log10 CFU/mL) of L. monocytogenes viable adherent cells after the inhibition and eradication of the biofilm forms (O3 = 50 ppm; 6 h) compared to control samples.
| Strain ID | Logarithmic Reduction 1,2 | |
|---|---|---|
| Inhibition | Eradication | |
| ATCC 7644 | 0.6 ± 0.1 | 0.6 ± 0.1 |
| ATCC 19112 | 0.7 ± 0.1 b | 1.2 ± 0.1 a |
| 1 | 1.0 ± 0.0 | 1.1 ± 0.0 |
| 2 | 1.2 ± 0.1 | 1.1 ± 0.1 |
| 6 | 0.4 ± 0.1 a | 0.1 ± 0.1 b |
| 7 | 1.3 ± 0.1 | 1.3 ± 0.1 |
| 13 | 0.2 ± 0.1 | 0.2 ± 0.1 |
| 16 | 1.1 ± 0.1 | 1.2 ± 0.1 |
| 17 | 0.6 ± 0.1 b | 0.9 ± 0.1 a |
| 18 | 1.6 ± 0.0 | 1.7 ± 0.1 |
| 20 | 0.6 ± 0.0 a | 0.1 ± 0.0 b |
| 25 | 0.9 ± 0.0 | 1.0 ± 0.0 |
| 36 | 0.9 ± 0.1 b | 1.2 ± 0.1 a |
| 37 | 0.7 ± 0.1 | 0.6 ± 0.1 |
| 38 | 0.7 ± 0.1 a | 0.3 ± 0.2 b |
| 40 | 0.1 ± 0.1 | 0.2 ± 0.1 |
| 64 | 0.6 ± 0.1 | 0.4 ± 0.1 |
| 76 | 0.6 ± 0.1 b | 1.3 ± 0.2 a |
| G40 | 0.9 ± 0.0 | 1.1 ± 0.2 |
| G46 | 0.4 ± 0.1 | 0.6 ± 0.1 |
| G52 | 1.0 ± 0.1 | 1.0 ± 0.1 |
| G69 | 0.4 ± 0.2 a | 0.0 ± 0.1 b |
1 Average ± Standard deviation of three replicates. 2 Values followed by different small letters in the same row are significantly different according to the Tukey’s multiple comparison test (p < 0.05). Strain n. 20 = highest significant difference in logarithmic reduction in inhibition compared to eradication.