Biofilm formation by Salmonella spp. on food contact surfaces and their sensitivity to sanitizers

Abstract

Biofilm formation by two poultry isolates of Salmonella on three commonly used food contact surfaces viz plastic, cement and stainless steel were studied. Biofilm formation of both the isolates showed a similar trend with the highest density being on plastic followed by cement and steel. Salmonella weltevreden formed biofilm with a cell density of 3.4 x 10(7), 1.57 x 10(6) and 3 x 10(5) cfu/cm2 on plastic, cement and steel respectively while Salmonella FCM 40 biofilm on plastic, cement and steel were of the order of 1.2 x 10(7), 4.96 x 10(6) and 2.23 x 10(5) cfu/cm2 respectively. The sensitivity of the biofilm cells grown on these surfaces to different levels of two sanitizers namely hypochlorite and iodophor for varying exposure times was studied. Biofilm cells offered greater resistance when compared to their planktonic counterparts. Such biofilm cells in a food processing unit are not usually removed by the normal cleaning procedure and therefore could be a source of contamination of foods coming in contact with such surfaces.

Journal

Title: International Journal of Food Microbiology

Abbreviated Title: International Journal of Food Microbiology

Publisher: Elsevier BV

ISSN (Print): 01681605

Publication date Created: March 2001

Publication date (Print): March 2001

Volume: 64

Issue: 3

Pages: 367-372

Article

DOI: 10.1016/S0168-1605(00)00466-9

PubMed ID: 11294359

Copyright statement: © 2001

License:

https://www.elsevier.com/tdm/userlicense/1.0/

Product

Self URI (article page): https://linkinghub.elsevier.com/retrieve/pii/S0168160500004669