Biocontamination in the dairy industry: The effect of raw milk conditioning film on the adhesion of Escherichia coli
Year: 2025
Type: article
Abstract: Conditioning films onsurfaces employed inthe dairy industry serve asthe precursors tothe formation ofpathogenic biofilms that impact product quality and consumer safety. Conditioning films have been studied from several aspects. However, there has been nostudy that evaluated the effect ofraw milk conditioning film onthe adhesion ofEscherichia coli. This study investigated the adhesion ofE. coli onglass and stainless-steel surfaces conditioned with raw milk and explored the surface properties potentially influencing this adhesion using the contact angle method. The results showed that after treating surfaces with raw milk, the adhesion ofthe bacteria onstainless steel and glass was significantly altered. Adhesion increased significantly onstainless steel (from 0.55 log10 to2.8 log10) but itdecreased onglass (from 1.56 log10 to0.8 log10). Significant alterations were observed in the physicochemical properties of the surfaces. Glass was initially relatively hydrophilic (46.33), while stainless steel was relatively hydrophobic (82.5). After treatment, the glass became relatively more hydrophobic (74.6), and stainless steel became relatively more hydrophilic (69.4). The electron donor/acceptor components of glass decreased after the treatment, while these components increased for stainless steel. The significant changes in adhesion were hypothesized to be due to the modification of surface properties by the raw milk.
Source: Czech Journal of Food Sciences
Institution: Université Sultan Moulay Slimane
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $609
OpenAlex ID: W4409373351