Table 1.
Log bacterial growth in pooled human milk samples inoculated with bacterial strains, treated with pascalization or a combination of pascalization, and subjected to freeze-drying at time 0 and at 3 and 6 months of storage.
| Genus | IC 1 | HPP | HPP + Lyo 0 |
HPP + Lyo 3 |
HPP + Lyo 6 |
IE 2 | %RG 3 |
|---|---|---|---|---|---|---|---|
| Staphylococcus aureus | 6.83 ± 0.03 | 0 | 0 | 0 | 0 | 6.83 | 100% |
| Escherichia coli | 7.07 ± 0.13 | 0 | 0 | 0 | 0 | 7.07 | 100% |
| Listeria monocytogenes | 7.91 ± 0.04 | 0 | 0 | 0 | 0 | 7.91 | 100% |
| Bacillus cereus | 5.3 ± 0.08 | 0 | 0 | 0 | 0 | 5.3 | 100% |
| Cronobacter sakazakii | 5.9 ± 0.24 | 0 | 0 | 0 | 0 | 5.9 | 100% |
The data are presented as mean values with the standard error of the mean. 1 IC—initial concentration; 2 IE—inactivation efficiency (the decrease in bacterial growth by orders of magnitude after HPP and HPP + Lyo compared with IC); 3 %RG—the percentage reduction of bacterial growth compared with IC.