Activity of disinfectants against foodborne pathogens in suspension and adhered to stainless steel surfaces

Brazilian Journal of Microbiology

Tatiane Karen Cabeça¹  Antonio Carlos Pizzolitto¹  Elisabeth Loshchagin Pizzolitto¹ 

[1] ,Universidade Estadual Paulista Faculdade de Ciências Farmacêuticas Araraquara Sao Paulo ,Brasil

关键词: biofilm cells;    plancktonic cells;    disinfectants;   

DOI  :  10.1590/S1517-83822012000300038

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License