Experimental evaluation of the bactericidal activity and stability of the biocidal agent "Krezonid"
DOI:
https://doi.org/10.31073/onehealthjournal2026-III-05Keywords:
biocidal agents, meta-cresol, bactericidal activity, stability, veterinary disinfectionAbstract
The article presents the results of an experimental assessment of the bactericidal activity and stability of the biocidal agent "Krezonid," whose main active ingredient is meta-cresol (3-methylphenol). The study was conducted to substantiate the effectiveness of the biocidal agent and confirm the preservation of its antimicrobial properties during long-term storage in accordance with the requirements. Bactericidal activity was evaluated using a quantitative suspension method with determination of the number of viable microorganisms (CFU) after exposure to the preparation. Streptococcus faecalis and Salmonella enteritidis strains were used as test cultures. The preparation was studied at concentrations of 0.1, 0.5, and 1.0% with exposure times of 10–30 minutes. The stability of the biocidal agent was studied under real storage conditions for 30 months by monitoring organoleptic indicators, pH values, and the preservation of bactericidal activity. It was found that the biocidal agent "Krezonid" exhibits pronounced bactericidal activity against both test microorganism cultures. Complete inactivation of Streptococcus faecalis and Salmonella enteritidis was achieved at a concentration of 0.5% and exposure of 20 minutes. During storage, the drug "Krezonid" retained its physicochemical homogeneity, stable pH value, and complete bactericidal activity throughout the observation period. The results obtained indicate the high efficacy and stability of the biocidal agent Krezonid, which justifies its use in veterinary practice and the possibility of establishing a shelf life of at least 24 months under regulated storage conditions.
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