Optimized applications of ozonated water as an effective disinfectant for Staphylococcus aureus clearance in an abattoir setting

다국어 초록 (Multilingual Abstract)

The objective of this study was to determine the efficacy of ozone in sanitizing water experimentally inoculated with the gram-positive food-poisoning bacterium Staphylococcus aureus. The bactericidal effect was measured after experimentally inoculated solutions were exposed to 0, 0.5, and 1.0 ppm ozone at several time points and different temperatures, in the presence of varying concentrations of different organic matter, namely, fetal bovine serum (FBS) or cattle liver. Results revealed inhibition of the bactericidal effect in the presence of the lowest percentage of FBS, but a lower extent of the inhibition occurred when liver was used as the organic matter. It was also apparent that a higher temperature and shorter ozone exposure time had led to a more reduced bactericidal efficacy than that under a lower temperature and longer ozone exposure. This study provides insight into the potential use of ozonated water as an effective and safe disinfectant in an abattoir setting.

목차 (Table of Contents)

• Abstract
• INTRODUCTION
• MATERIALS AND METHODS
• Bacterial strain and growth condition
• Preparation of organic matter
• Preparation of ozonated water
• Statistical analysis
• RESULTS AND DISCUSSION
• Bacterial reduction rate
• Efficacy of ozonated water in preventing bacterialgrowth upon elimination of organic matter and atdifferent incubation times
• Effects of organic matter on the bacterial reduction rate
• Effects of different temperatures on the rate of bacterialkilling
• REFERENCES

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