에어로졸 형태의 상업적 살균소독제의 병원성 미생물에 대한 저해효과 평가

Abstract

This study was conducted to investigate the effect of aerosolized chemical sanitizers on inhibitingfoodborne pathogens such as Escherichia coli O157:H7, Salmonella typhimurium, and Listeria monocytogenes. Fivedomestic commercial sanitizers subjected to five groups of sanitizer (chlorine-based, hIodophor-based, quaternary ammonium-based, and alcohol-based sanitizers) were aerosolized by an aerosol generatorinto a model cabinet and treated in laboratory media containing three pathogens for 1 h at room temperature. Aero-solized hydrogen peroxide-based and quaternary ammonium-based sanitizers were efective at inhibiting levels of E.coli O157:H7 (ca. 4-9 log reductions) whereas other aerosolized sanitizers such as chlorine-based, Iodophor-based,and alcohol-based sanitizers did not significantly reduced the levels of E. coli O157:H7. For S. typhimurium, the onlyaerosolized hydrogen peroxide-based sanitizer was effective and resulted in ca. 5-9 log reduction. Aerosolized hydro-gen peroxide-based, Iodophor-based, and quaternary ammonium-based sanitizers significantly reduced levels of L.monocytogenes and especialy, aerosolized quaternary ammonium-based sanitizer was strongly effective to kill L.monocytogenes, resulted in higher than 8.8 log reduction. And there was no special trend in inhibitory efficacy of san-itizers aerosolized by 1.6 or 2.4 MHz aerosol generators. From these results, aerosolization has great potential for usein commercial applications however its efficacy could be very different depending on type of sanitizers.