Table 2 Qualitative microbiological analysis for the bacterial survival in powdered infant formula (PIF) contaminated via spoon from artificial skin with moderate bacterial load during the storage.
Time | No. of positive samples in PIF at moderate bacterial load on handx | ||
|---|---|---|---|
Cronobacter sakazakii | Salmonella enterica | Staphylococcus aureus | |
0 h | ++++++ | ++++ | +++++ |
4 h | ++++++ | ++++ | +++++ |
12 h | ++++++ | +++ | +++++ |
24 h | ++++++ | +++ | +++++ |
48 h | ++++++ | ++ | +++++ |
72 h | +++++ | NDy | ++++ |
2 weeks | +++++ | ND | ++ |
3 weeks | +++++ | ND | ND |
