title: Adhesion of Salmonella Enteritidis and Listeria monocytogenes on stainless steel welds.
abstract: Pathogenic microorganisms are able to adhere on equipment surfaces, being possible to contaminate food during processing. Salmonella spp. and Listeria monocytogenes are important pathogens that can be transmitted by food, causing severe foodborne diseases. Most surfaces of food processing industry are made of stainless steel joined by welds. However currently, there are few studies evaluating the influence of welds in the microorganism's adhesion. Therefore the purpose of the present study was to investigate the adhesion of Salmonella Enteritidis and L. monocytogenes on surface of metal inert gas (MIG), and tungsten inert gas (TIG) welding, as well as to evaluate the cell and surface hydrophobicities. Results demonstrated that both bacteria adhered to the surface of welds and stainless steel at same levels. Despite this, bacteria and surfaces demonstrated different levels of hydrophobicity/hydrophilicity, results indicated that there was no correlation between adhesion to welds and stainless steel and the hydrophobicity.
authors.affiliation: Departamento de Ciência de Alimentos, Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul-ICTA/UFRGS, Av. Bento Gonçalves, 9500/43212, 91501-970 Porto Alegre, Brasil. Electronic address: lscasarin@gmail.com.
authors.forename: Letícia Sopeña
authors.initials: LS
authors.lastname: Casarin
authors.affiliation: Departamento de Ciência de Alimentos, Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul-ICTA/UFRGS, Av. Bento Gonçalves, 9500/43212, 91501-970 Porto Alegre, Brasil.
authors.forename: Adriano
authors.initials: A
authors.lastname: Brandelli
authors.affiliation: Instituto de Física, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, 91501-970 Porto Alegre, Brasil.
authors.forename: Fabrício
authors.initials: F
authors.lastname: de Oliveira Casarin
authors.affiliation: Centro Federal de Educação Tecnológica de Minas Gerais - CEFET-MG, Brasil.
authors.forename: Paulo Azevedo
authors.initials: PA
authors.lastname: Soave
authors.affiliation: Instituto de Física, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, 91501-970 Porto Alegre, Brasil.
authors.forename: Cesar Henrique
authors.initials: CH
authors.lastname: Wanke
authors.affiliation: Departamento de Ciência de Alimentos, Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul-ICTA/UFRGS, Av. Bento Gonçalves, 9500/43212, 91501-970 Porto Alegre, Brasil.
authors.forename: Eduardo Cesar
authors.initials: EC
authors.lastname: Tondo
mesh_terms: D001422:Bacterial Adhesion; D004866:Equipment Contamination; D005516:Food Microbiology; D005525:Food-Processing Industry / Q000295:instrumentation*; D008089:Listeria monocytogenes / Q000502:physiology*; D012477:Salmonella enteritidis / Q000502:physiology*; D013193:Stainless Steel; D014896:Welding
chemical_list: D013193:Stainless Steel
keywords: Bacterial adhesion; Listeria monocytogenes; Salmonella Enteritidis; Stainless steel; Welds