Table 1.
E. coli NCTC12900 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* | 7.11ab | 0.06 | 6.96a | 0.19 |
| C2* | 6.95bc | 0.11 | 9.18b | 0.16 | |
| 60 | 7.35b | 0.25 | 9.11b | 0.13 | |
| 120 | 6.73c | 0.13 | 9.15b | 0.13 | |
| 300 | 6.06d | 0.15 | 8.41c | 0.55 | |
| 12% BE | C1* | 7.13ab | 0.16 | 7.02a | 0.29 |
| C2* | 7.18ab | 0.21 | 9.39d | 0.07 | |
| 60 | 7.32b | 0.04 | 9.47d | 0.17 | |
| 120 | 7.12c | 0.68 | 9.33bd | 0.26 | |
| 300 | 5.79d | 0.92 | 9.35d | 0.36 | |
| PBS | C1* | 7.18ab | 0.09 | 6.94a | 0.19 |
| C2* | 6.94bc | 0.09 | 6.90a | 0.00 | |
| 60 | ND*e | – | ND*e | – | |
| 120 | ND*e | – | ND*e | – | |
| 300 | ND*e | – | ND*e | – | |
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.