An investigation of the efficacy of different disinfectants on Staphylococcus aureus and Pseudomonas fluorescens isolated from fish processing plant

Healthy and safe food production is an important issue for processing plants that export internationally. With cleaning and disinfection, the number of bacteria that can contaminate fish by coming from various sources at every stage of the processing plant is kept to a minimum. In this study, it was aimed to determine the effective concentrations of different disinfectants on the bacterial strains forming the resident microflora of the fish processing plant. In the study, the effectiveness of 4 different disinfectants (chlorine, quaternary ammonium compounds, gluteraldehyde and hydrogen peroxide) was termined on bacteria isolated from different parts of the fish processing plant. The antimicrobial efficacy of different disinfectant concentrations was determined by the Quantitative Suspension Assay. In our study, it was determined that all disinfectants were effective on bacteria isolated at 2% concentration. It was determined that chlorine compounds did not show bactericidal activity at low concentrations (0.5%, 1%) on Staphylococcus aureus and Pseudomonas fluorescens isolates. The effectiveness of quaternary ammonium-based disinfectants on all isolates and hydrogen peroxide compounds on P. fluorescens at all concentrations was determined.