Table 3.
Minimum inhibitory concentration (MIC) of PPE-AgNPs against foodborne pathogens.
| Pathogenic bacteria | MIC (µg/mL) of PPE-AgNPs | |||||||
|---|---|---|---|---|---|---|---|---|
| 1000 (control) | 500 | 250 | 125 | 75 | 50 | 25 | 12.5 | |
| B. subtilis ATCC 6633 | − | − | − | − | − | − | − | + |
| E. faecalis ATCC 29212 | − | − | − | + | + | + | + | + |
| E. coli ATCC 8379 | − | − | − | + | + | + | + | + |
| K. pneumoniae ATCC 00607 | − | − | − | − | + | + | + | + |
| S. typhi DSM 17058 | − | − | − | − | − | − | + | + |
| S. sonnei DSM 5570 | − | − | − | − | − | + | + | + |
| Spectrum of activity (%) | 6/6 | 6/6 | 6/6 | 4/6 | 3/6 | 2/6 | 1/6 | 0/6 |
| 100 | 100 | 100 | 66.7 | 50.0 | 33.3 | 16.6 | 0 | |
| Pathogenic fungi | MIC (µg/mL) of PPE-AgNPs | |||||||
|---|---|---|---|---|---|---|---|---|
| 1000 (control) |
500 | 250 | 125 | 75 | 50 | 25 | 12.5 | |
| A. flavus ATCC 9643 | − | − | − | − | − | + | + | + |
| R. oryzae ATCC 96,382 | − | − | − | + | + | + | + | + |
| Spectrum of activity (%) | 2/2 | 2/2 | 2/2 | 1/2 | 1/2 | 0/2 | 0/2 | 0/2 |
| 100 | 100 | 100 | 50 | 50 | 0.00 | 0.00 | 0.00 | |
−, no growth; +, growth.