The bactericidal effect of superfine nanobubbles and high-density ozone (SNO) water on Campylobacter jejuni was evaluated. C. jejuni was not detected immediately after 1 ml of C. jejuni culture containing 108 bacteria cells was mixed with 300 ml of SNO water (4 ppm, 15°C). The full bactericidal effect was observed at 10 min after intake from an SNO water-producing machine, but the effect completely disappeared after 2 h. C. jejuni strains were not detected after mixing 1 ml solution of chicken feces containing 108 C. jejuni cells with 2,000-3,000 ml of the ozone water. Chicken hides contaminated with 104 C. jejuni cells were washed using SNO water (80 ml/s, 90 s), and a bactericidal effect was observed. These results suggest that SNO water can be used as a disinfection agent for poultry houses and for chicken carcasses contaminated by Campylobacter.
(Safety Research Team)
