Dairy Australia Webinar - Steve FlintEffective Cleaning and Sanitation May 15th 2013.pdf. Central information website for the global seed industry. France June 6, 2012 Bacteria adhering to the surface of equipment are a major source of food contamination in industry. Inhibiting their adhesion during the production phase, and encouraging their detachment during cleaning, constitute two major public health challenges.
By means of the Interspore project, INRA researchers in Lille and their partners have acquired crucial data on the mechanisms that govern bacterial adhesion by accurately estimating the interaction forces in play between bacteria and materials. These results clearly demonstrate the inefficacy of mechanical cleaning on the detachment of Bacillus spores or Listeria cells. On the other hand, their findings evidence the ease of transfer of adherent bacteria to foods. Interspore, a project to model phenomena at the bacteria/material interface Hydrophobicity, a key property in adhesion Easy transfer to foodsAdherent Bacillus spores were detached by successive contacts with agar-coated plates.
For further information: E. Fouling and Cleaning Studies in the Food and Beverage Industry Classified by Cleaning Type - Goode - 2013 - Comprehensive Reviews in Food Science and Food Safety. Biofilms and Microorganisms on Surfaces After Cleaning and Disinfection. SANITATION | April/May 2011 By Brigitte Carpentier, Ph.D. It is common practice among food microbiologists to use the term “biofilm” to designate a community of microorganisms immobilized on a substratum as did Charaklis in 1989.[1] However, it should be noted that the word “biofilm” is currently used to mean “matrix-enclosed microbial populations adherent to each other and/or to surfaces or interfaces.”[2] According to this definition, biofilms result from the growth of attached microorganisms which, due to the production of extracellular polysaccharides, are able to form micro- (Figure 1)[3] or macro-colonies on surfaces.
In food processing plants, surfaces are periodically cleaned and disinfected, the temperature is generally low or the atmosphere is dry. Thus, the process of biofilm formation is periodically interrupted, and such conditions usually hamper the formation of microcolonies. Bacterial genera found after cleaning and disinfection. Bacterial persistence. Recommendations 2. 3. Biofilms and their consequences, with particular reference to hygiene in the food industry - Carpentier - 2008 - Journal of Applied Microbiology.