Antimicrobial activity of products based on potassium monopersulfate on bacteria associated with avian infections

Abstract The objective of this work was to evaluate the antimicrobial activity of four new potassium monopersulfate-based products on bacterial biofilms associated with avian infections, in order to disinfect drinking fountains in poultry farms. Initially, tests were performed in planktonic bacteria...

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Veröffentlicht in:Pesquisa agropecuaria brasileira 2023-01, Vol.58
Hauptverfasser: Moraes, Miguel Augusto, Oliveira-Silva, Mariana, Goulart, Rafael Silva, Gabarra, Manoel Henrique Cintra, Miranda, Carlos Eduardo Saraiva, Almeida, Paulo Garcia de, Pitondo-Silva, André
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Sprache:eng
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Zusammenfassung:Abstract The objective of this work was to evaluate the antimicrobial activity of four new potassium monopersulfate-based products on bacterial biofilms associated with avian infections, in order to disinfect drinking fountains in poultry farms. Initially, tests were performed in planktonic bacterial cells, to verify the antimicrobial activity and the minimum inhibitory concentration of the products, named PA, PB, PC, and PD. These products were tested on mature biofilms of the avian pathogens Escherichia coli, Salmonella enterica subsp. enterica serovar Enteritidis, and Listeria monocytogenes, grown on specimens preserved in acrylic blocks, by counting colony-forming units, scanning electron microscopy, and confocal fluorescence microscopy. All products were effective against the evaluated bacterial species. The PA and PB products inhibited the bacterial growth at ≤ 0.13% concentrations, and PC and PD showed the same effect at ≤ 0.25% concentrations. Furthermore, the PA product was able to eliminate mature biofilms of S. enterica subsp. enterica serovar Enteritidis and L. monocytogenes. The evaluated monopersulfate-based products, notably PA, are effective against bacterial biofilms associated with avian infections and show potential as sanitizers and disinfectants for drinking fountains in poultry farms. Resumo O objetivo deste trabalho foi avaliar a atividade antimicrobiana de quatro novos produtos à base de monopersulfato de potássio em biofilmes bacterianos associados a infecções aviárias, para a desinfecção de bebedouros em granjas avícolas. Inicialmente, realizaram-se testes em células bacterianas planctônicas, para verificar a atividade antimicrobiana e a concentração inibitória mínima dos produtos, denominados PA, PB, PC e PD. Esses produtos foram testados em biofilmes maduros dos patógenos aviários Escherichia coli, Salmonella enterica subsp. enterica serovar Enteritidis e Listeria monocytogenes, cultivados em espécimes preservados em blocos de acrílico, por meio da contagem de unidades formadoras de colônias, por microscopia eletrônica de varredura e por microscopia de fluorescência confocal. Todos os produtos foram eficazes contra as espécies bacterianas avaliadas. Os produtos PA e PB inibiram o crescimento bacteriano em concentrações ≤ 0,13%, e PC e PD apresentaram o mesmo efeito em concentrações ≤ 0,25%. Além disso, o produto PA foi capaz de eliminar os biofilmes maduros de S. enterica subsp. enterica serovar Enteritidis e L. monocytogenes. O
ISSN:0100-204X
1678-3921
1678-3921
DOI:10.1590/s1678-3921.pab2023.v58.03127