Activity of disinfectants against foodborne pathogens in suspension and adhered to stainless steel surfaces
Braz. j. microbiol
;
43(3): 1112-1119, July-Sept. 2012. ilus, tab
Article
in English
| LILACS
| ID: lil-656681
ABSTRACT
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.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Staphylococcus aureus
/
Hypochlorous Acid
/
Biofilms
/
Disinfectants
/
Listeria monocytogenes
Language:
English
Journal:
Braz. j. microbiol
Journal subject:
Microbiology
Year:
2012
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Estadual Paulista/BR
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