Evaluation of possible use of disinfectant based on chlorine dioxide in dairy plant | Ispitivanje mogućnosti primene preparata na bazi hlor-dioksida za dezinfekciju u pogonima za preradu mleka
2009
Rakić-Martinez, M., Fakultet veterinarske medicine, Beograd (Serbia) | Katić, V., Fakultet veterinarske medicine, Beograd (Serbia)
The objectives of this study were the following: 1) determine the efficiency of a disinfectant based on chlorine dioxide in suspension in a closed system in a dairy plant; 2) evaluate the possibility of disinfection of working surfaces with a disinfectant based on chlorine dioxide. Results indicated a 100% reduction of greater than 10**8 cfu/ml Listeria monocytogenes, Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Staphylococcus aureus, viable count after 1 minute of exposure to 100 ppm of the disinfectant based on chlorine dioxide and 400 ppm for Bacillus cereus. In the presence of 2% skim milk and 4% skin milk concentrations of 200 and 250 ppm resulted in 100% reduction in numbers of the five of six test microorganisms, respectively. The spore former, Bacillus cereus is less susceptible to the disinfectant. Therefore, the efficient concentration for 100% reduction in viable count after 1 minute exposure was 500 ppm. The corrosive properties of the disinfectant were not determined. In the case of closed system disinfection in a dairy plant, reduction in viable count after 15 minutes of exposure to 100 ppm of disinfectant based on chlorine dioxide ranged from 80 to 100%.
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