Table 4.
Bacterial growth and biofilm formation of L. monocytogenes on polyester and stainless steel after 72 h of incubation under high relative humidity conditions of ≥90%.
| Surface | Ag-NPs | Bacterial Growth * | Biofilm Formation |
|---|---|---|---|
| (Concentration in ppm) | |||
| Stainless steel | 0 | 5.84 ± 0.62 a | 18/18 |
| Polyester without biocide | 0 | 4.64 ± 0.92 a | 18/18 |
| Poliester A | 500 | 0.13 ± 0.09 c | 0/18 |
| Poliester B | 600 | 2.19 ± 2.40 b | 9/18 |
| Poliester C | 800 | 1.01 ± 0.60 c | 0/17 |
* Bacterial counts expressed in log CFU/cm2. a–c Average values with different lowercase letters are significantly different (p < 0.05).