Evaluation of the active concentration of two disinfectants based on glutaraldehyde and benzalkonium chloride and antimicrobial activity in vitro against Salmonella Heidelberg and Salmonella Typhimurium

Abstract

Biosecurity, cleaning and disinfection of swine and poultry facilities are fundamental for the reduction of pathogenic microorganisms of importance for public and animal health. The objective of this work was to compare the levels of active ingredient described on the label and the real levels detected in high-performance liquid chromatography (HPLC) of two disinfectants., then evaluate the antimicrobial activity since, following the Germicidal Sanitizing Action and Disinfectant Detergent (Official Method AOAC 960.09) in four different dilutions with the presence of 3% organic matter during 15 min of contact, against Salmonella Heidelberg and Salmonella Typhimurium (ST). The product "A" presents active levels of agreement according to the label. The content of quantified assets for product "B" was lower than that recorded on the label. The disinfectant "A" was effective in microbiological evaluation while the disinfectant "B" had microbiocidal activity compromised by the deficit of assets.