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Evaluation of Mycobactericidal and Brucellicidal Efficacy of an Aldehyde and Quaternary Ammonium Solution and a Mixture of Phenolic Compounds
Ocampo, L., Banegas, M., Sumano, H...
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Abstract
Both tuberculosis (TB), caused by the Mycobacterium tuberculosis complex, and brucellosis (BR), caused by several species of Brucella, are considered emerging zoonoses. Disinfectants are essential for the control and prevention of TB and BR infections; therefore, their efficacy, either as isolated products or in combination with other disinfectants, must be ensured. The aim of this study was to evaluate the in vitro mycobactericidal and brucellicidal activity of AVT-450® and Poly-Phen®. AVT-450® contains a mixture of quaternary ammonium, ethanol aldehyde, and glutaraldehyde. Poly-Phen® is a mixture of phenylphenol, benzylpara-chlorophenol, and amylphenol. Two virulent laboratory strains, Mycobacterium tuberculosis H37Rv (MtbH37Rv) and Brucella canis (Brc), were used.in this study To determine their viability, both bacteria were exposed to dilutions of AVT-450® and Poly-Phen® (1:1000, 1:500, and 1:250) for 10, 20, and 60 minutes for MtbH37Rv and 10, 20, and 30 minutes for Brc. The results obtained demonstrated that AVT-450® and Poly-Phen® effectively eliminated MtbH37Rv and Brc in all tested dilutions, even during short incubation periods. These satisfactory results may be attributed to the synergistic effect of the compounds in question. We thus conclude that AVT-450® and Poly-Phen® can be used as field disinfectants for the control of TB and BR, using the dilutions recommended by the manufacturer.
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Affiliation of the authors at the time of publication
Department of Physiology and Pharmacology. School of Veterinary Medicine and Animal Science, National Autonomous University of Mexico. Av. Universidad 3000, Coyoacán, Mexico City, C.P. 04510. ImpexVet. Prolongación calle 18 No. 218, Col. San Pedro de los Pinos, Del. Álvaro Obregón, Mexico City, C.P. 01180. Department of Microbiology and Immunology. School of Veterinary Medicine and Animal Science, National Autonomous University of Mexico. Av. Universidad 3000, Coyoacán, Mexico City, C.P. 04510. Integrative Immunology Laboratory, National Institute of Respiratory Diseases Ismael Cosio Villegas, Mexico City, Mexico. Department of Immunology. National School of Biological Sciences, National Polytechnic Institute. Mexico City, Mexico.
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