Table 7. Antibacterial efficacy of peracetic acid A on carcasses and contaminated water.
Classification | 50 ppm | 100 ppm | 150 ppm | 200 ppm | SEM | p-value | ||
---|---|---|---|---|---|---|---|---|
Before treatment | Carcasses | General bacteria | 18,816 | 18,816 | 18,816 | 18,816 | 19.70 | 0.99 |
Escherichia coli | 6,941.7 | 6,941.7 | 6,941.7 | 6,941.7 | 41.45 | 0.96 | ||
Contaminated water | General bacteria | 3.6×108 | 3.6×108 | 3.6×108 | 3.6×108 | 1.4×107 | 0.97 | |
E. coli | 3.8×107 | 3.6×107 | 3.6×107 | 3.6×107 | 1.7×106 | 0.98 | ||
After treatment | Carcasses | General bacteria | 2,113.0b | 1,110.5c | 884.0b | 292.0b | 288.26 | <0.05 |
E. coli | 585.5ab | 139.0b | 122.0b | 44.2b | 56.98 | <0.05 | ||
Contaminated water | General bacteria | 1.5×108b | 1.3×108b | 9.8×107b | 9.8×107a | 1.6×107 | <0.05 | |
E. coli | 7.9×106a | 4.3×106b | 5.8×106a | 2.7×106b | 3.4×106 | <0.05 | ||
Redution rate (%)1) | Carcasses | General bacteria | 88.87c | 94.12b | 95.32b | 98.46a | 1.46 | <0.05 |
E. coli | 91.62bc | 98.01b | 98.26b | 99.45b | 3.53 | <0.05 | ||
Contaminated water | General bacteria | 58.61b | 64.32b | 72.86a | 72.85a | 6.92 | <0.05 | |
E. coli | 79.17c | 88.06b | 84.02b | 92.47a | 5.66 | <0.05 |
Each values are mean±SD of at least three repeated experiments.
(Initial bacterial count – Count of bacteria after 10 min) / Initial bacterial count × 100.
Values with different letters within a row are different at p<0.05.