Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/62903
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Comparative susceptibility of Salmonella Typhimurium biofilms of different ages to disinfectants |
Author: | Wong, H. Townsend, K. Fenwick, S. Maker, G. Trengove, R. O'Handley, R. |
Citation: | Biofouling: the journal of bioadhesion and biofilm research, 2010; 26(7):859-864 |
Publisher: | Taylor & Francis Ltd |
Issue Date: | 2010 |
ISSN: | 0892-7014 1029-2454 |
Statement of Responsibility: | Hui San Wong, Kirsty M. Townsend, Stan G. Fenwick, Garth Maker, Robert D. Trengove and Ryan M. O’Handley |
Abstract: | There is a general consensus that with increasing age a biofilm shows increased resistance to antimicrobials. In this study the susceptibility of 3-, 5- and 7-day-old Salmonella enterica serovar Typhimurium biofilms to disinfectants was evaluated. It was hypothesized that 7-day-old biofilms would be more resistant to disinfectants compared to 3- and 5-day-old biofilms. Biofilms were formed using the MBEC™ system and treated with six chemical disinfectants for 1 and 5 min. Four disinfectants at the highest concentration available showed 100% reduction in viable cells from all ages of biofilms after exposure for 5 min, and ethanol at 70% v/v was the least effective against biofilms, followed by chlorhexidine gluconate (CG). At the recommended user concentrations, only sodium hypochlorite showed 100% reduction in viable cells from all ages of biofilms. Benzalkonium chloride and CG were the least effective against biofilms, followed by quaternary ammonium compound which only showed 100% reduction in viable cells from 5-day-old biofilms. Overall, the results from this study do not display enhanced resistance in 7-day-old biofilms compared to 3- and 5-day-old biofilms. It is concluded that under the conditions of this study, the age of biofilm did not contribute to resistance towards disinfectants. Rather, the concentration of disinfectant and an increased contact time were both shown to play a role in successful sanitization. |
Keywords: | Salmonella Typhimurium biofilm age disinfectants Calgary Biofilm Device susceptibility |
Rights: | © 2010 Taylor & Francis |
DOI: | 10.1080/08927014.2010.527959 |
Published version: | http://dx.doi.org/10.1080/08927014.2010.527959 |
Appears in Collections: | Animal and Veterinary Sciences publications Aurora harvest |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.