Activity of disinfectants against foodborne pathogens in suspension and adhered to stainless steel surfaces
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Data
2012-09-01
Autores
Tomazella, Tatiane Karen Cabeça [UNESP]
Pizzolitto, Antonio Carlos [UNESP]
Pizzolitto, Elisabeth Loshchagin [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Microbiologia
Resumo
The purpose of this study was to investigate and compare the efficacy of various disinfectants on planktonic cells and biofilm cells of Listeria monocytogenes, Staphylococcus aureus and Escherichia coli. Numbers of viable biofilm cells decreased after treatment with all tested disinfectants (iodine, biguanide, quaternary ammonium compounds, peracetic acid and sodium hypochlorite). Sodium hypochlorite was the most effective disinfectant against biofilm cells, while biguanide was the least effective. Scanning electron microscopy observations revealed that cells adhered on stainless steel surface after treatment with the disinfectants. No viable planktonic cells were observed after treatment with the same disinfectants. Based on our findings, we concluded that biofilm cells might be more resistant to disinfectants than plancktonic cells.
Descrição
Palavras-chave
biofilm cells, plancktonic cells, disinfectants
Como citar
Brazilian Journal of Microbiology. Sociedade Brasileira de Microbiologia, v. 43, n. 3, p. 1112-1119, 2012.