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

Revista de microbiologia

Cabeça, Tatiane Karen¹ 

[1] Universidade Estadual Paulista, Araraquara, Brasil

关键词: biofilm cells;    plancktonic cells;    disinfectants.;   

DOI  :  10.1590/S1517-83822012000300038

学科分类：农业科学（综合）

来源: Sociedade Brasileira de Microbiologia / Brazilian Society for Microbiology

【 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