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- Title
Attachment and biofilm formation on stainless steel byEscherichia coliO157:H7 as affected by curli production.
- Authors
Ryu, J.-H.; Kim, H.; Frank, J.F.; Beuchat, L.R.
- Abstract
j.-h. ryu, h. kim, j.f. frank and l.r. beuchat. 2004.The aim of this study was to determine the role of curli in attachment and biofilm formation byEscherichia coliO157:H7 on stainless steel.Three curli-deficient strains (43895−, 43894− and E0018−) and three curli over-producing strains (43895+, 43894+ and E0018+) ofE. coliO157:H7 were studied. Stainless steel coupons (SSC) were immersed in cell suspensions of each strain for 24 h at 4°C. The number of cells attached to SSC was determined. To determine the ability of attached cells to form biofilm, SSC were immersed in 10% of tryptic soya broth up to 6 days at 22°C. Curli-deficient and curli-producing strains did not differ in their ability to attach to SSC, but only curli-producing strains formed biofilms.Curli production byE. coliO157:H7 does not affect attachment of cells on stainless steel but curli-producing strains are better able to form biofilms.Curli production byE. coliO157:H7 enhances its ability to form biofilm on stainless steel, thereby potentially resulting in increased difficulty in removing or killing cells by routine cleaning and sanitizing procedures used in food-processing plants.
- Subjects
BIOFILMS; STAINLESS steel; ESCHERICHIA coli; MICROBIAL aggregation; CELL culture; FOOD industry
- Publication
Letters in Applied Microbiology, 2004, Vol 39, Issue 4, p359
- ISSN
0266-8254
- Publication type
Article
- DOI
10.1111/j.1472-765X.2004.01591.x