Biofilm production by Salmonella spp. isolated from poultry in stainless steel, PVC and glass

Abstract

Salmonella is one of the most common cause of foodborne disease and food animal is the main vehicle of this microorganism, mainly poultry, once those animals are asymptomatic for some pathogenic serotypes for man. It can excrete this microorganism in feces, causing cross contamination in the slaughterhouses, retail and residences. The physiochemical properties of a surface can exercise a strong influence on the adhesion of the microorganisms, which adhere more easily to the hydrophobic surfaces like polyvinyl chloride (PVC) than to the hydrophilic (glass or stainless steel). As well as other pathogenic bacteria, Salmonella produce fimbriae, with hydrophobic residues of amino acids, contributing to the hidrofobicity of the bacterial cell in surfaces and helping in aggregation of new bacteria. In the fimbriae and cellulose synthesis there are many genes involved like csgD and the adrA. So, the main objective is test the presence of those genes in Salmonella strains, isolated from poultry and their behavior in biofilme production in different temperatures (16, 20, 28 and 35ºC) and materials (glass, PVC and stainless steel). (AU)