Table 1.
Reduction of Bacillus cereus in red pepper powder after the combined treatment of MH and DBD plasma.
| Mean (± SD) Reduction Value (log CFU/g) | ||||||
|---|---|---|---|---|---|---|
| DBD Plasma Treatment (min) | ||||||
| Target Organism | MH Treatment (min) | 0 | 5 | 10 | 15 | 20 |
| B. cereus | 0 | – | 0.12 ± 0.21 | 0.28 ± 0.32 | 0.61 ± 0.30 | 0.96 ± 0.17 |
| 5 | 0.23 ± 0.24 | 0.33 ± 0.20 | 0.42 ± 0.10 | 1.97 ± 0.26gh | 2.57 ± 0.33f | |
| 10 | 0.93 ± 0.18 | 1.45 ± 0.23ij | 1.70 ± 0.13hi | 3.08 ± 0.32e | 3.64 ± 0.24d | |
| 15 | 1.16 ± 0.18j | 2.34 ± 0.19fg | 2.60 ± 0.24f | 3.87 ± 0.22d | 5.53 ± 0.16c | |
| 20 | 1.43 ± 0.23ij | 5.77 ± 0.26bc | 6.05 ± 0.27ab | 6.20 ± 0.31ab | 6.43 ± 0.21a | |
The data indicates means with standard deviations (SDs) (three samples/treatment). MH: mild heat. DBD plasma: dielectric barrier discharge plasma. Gray box: Among all combination treatments having >1 log reduction, means with different letters (a~j) differ significantly (p < 0.05) by the Duncan multiple range test.