Table 3.
S. aureus NCTC1803 planktonic inactivation efficacy at 80 kVRMS with different media and post-treatment storage conditions.
| Media | Plasma treatment time (s) | Storage condition | |||
|---|---|---|---|---|---|
| 4°C storage | RT storage | ||||
| Cell density (Log10 CFU ml−1) | SD* | Cell density (Log10 CFU ml−1) | SD* | ||
| 3% BE | C1* | 7.29a | 0.04 | 6.03a | 0.46 |
| C2* | 6.63b | 0.26 | 8.87b | 0.01 | |
| 60 | 5.71c | 0.34 | 8.08bc | 0.17 | |
| 120 | 5.79c | 0.17 | 7.98c | 0.31 | |
| 300 | 5.02d | 0.33 | 7.03d | 0.58 | |
| 12% BE | C1* | 7.17e | 0.06 | 6.30a | 0.14 |
| C2* | 6.52b | 0.09 | 9.01e | 0.14 | |
| 60 | 6.33f | 0.33 | 8.83ef | 0.06 | |
| 120 | 6.35f | 0.22 | 8.76f | 0.07 | |
| 300 | 5.76g | 0.05 | 8.43g | 0.09 | |
| PBS | C1* | 7.40ah | 0.07 | 6.41a | 0.18 |
| C2* | 6.37b | 0.01 | 6.52a | 0.19 | |
| 60 | ND*i | – | ND*h | – | |
| 120 | ND*i | – | ND*h | – | |
| 300 | ND*i | – | ND*h | – | |
SD*, standard deviation; ND*, non-detectable; C1*, Control without storage; C2*, Control with storage. Different letters indicate a significant difference at the 0.05 level between media and treatment times.