TABLE 4.
Logarithmic viability reduction of bacterial suspensions treated with high pressurea both without additives and with the addition of lysozyme-derived peptides
| Organism | Pressure (MPa) | Log N0/N ± SDb with:
|
No. of samples | ||
|---|---|---|---|---|---|
| No additives (control) | HEL96-116 (100 μg/ml) | T4L143-155 (100 μg/ml) | |||
| E. coli | 300 | 3.2 ± 0.5 (a) | 4.4 ± 0.2 (b) | 3.5 ± 0.2 (a) | 3 |
| P. fluorescens | 155 | 1.0 ± 0.1 (a) | 2.1 ± 0.4 (b) | 1.3 ± 0.7 (a) | 3 |
| S. enteritidis | 270 | 3.2 ± 0.2 (a) | 4.4 ± 0.2 (b) | 4.3 ± 0.2 (b) | 3 |
| Salmonella serovar Typhimurium | 250 | 2.2 ± 1.3 (a) | 3.2 ± 0.8 (b) | 3.0 ± 1.2 (b) | 6 |
| S. flexneri | 250 | 0.9 ± 0.3 (a) | 2.5 ± 0.4 (b) | 2.3 ± 0.1 (b) | 3 |
| S. sonnei | 220 | 1.7 ± 1.0 (a) | 3.4 ± 1.1 (b) | 2.9 ± 0.9 (b) | 6 |
a
High pressure treatment: 15 min, 20°C, 10 mM phosphate buffer, pH 7.0.
b
Values within a row followed by different letters are significantly different (P < 0.05).