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