Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Inhibitory Effect of Aerosolized Commercial Sanitizers against Foodborne Pathogens

에어로졸 형태의 상업적 살균소독제의 병원성 미생물에 대한 저해효과 평가

  • Lee, Sun-Young (Department of Food and Nutrition, Chung-Ang University) ;
  • Jung, Jin-Ho (Department of Food and Nutrition, Chung-Ang University) ;
  • Jin, Hyun-Ho (Department of Food and Nutrition, Chung-Ang University) ;
  • Kim, Young-Ho (Materials Utilization Research Division, Korea Food Research Institute) ;
  • Oh, Se-Wook (Food Safety Research Division, Korea Food Research Institute)
  • 이선영 (중앙대학교 식품영양학과) ;
  • 정진호 (중앙대학교 식품영양학과) ;
  • 진현호 (중앙대학교 식품영양학과) ;
  • 김영호 (한국식품연구원 소재이용연구단) ;
  • 오세욱 (한국식품연구원 안전성연구단)
  • Published : 2007.12.31
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Abstract

This study was conducted to investigate the effect of aerosolized chemical sanitizers on inhibiting foodborne pathogens such as Escherichia coli O157:H7, Salmonella typhimurium, and Listeria monocytogenes. Five domestic commercial sanitizers subjected to five groups of sanitizer (chlorine-based, hydrogen peroxide-based, Iodophor-based, quaternary ammonium-based, and alcohol-based sanitizers) were aerosolized by an aerosol generator into a model cabinet and treated in laboratory media containing three pathogens for 1 h at room temperature. Aerosolized hydrogen peroxide-based and quaternary ammonium-based sanitizers were effective 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 only aerosolized hydrogen peroxide-based sanitizer was effective and resulted in ca. 5-9 log reduction. Aerosolized hydrogen peroxide-based, Iodophor-based, and quaternary ammonium-based sanitizers significantly reduced levels of L. monocytogenes and especially, 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 sanitizers aerosolized by 1.6 or 2.4 MHz aerosol generators. From these results, aerosolization has great potential for use in commercial applications however it's efficacy could be very different depending on type of sanitizers.

Aerosolization 기술은 미생물 제어를 위한 살균처리에 있어서 여러 가지 장점을 가지고 있어서 식품과 식품가공을 위한 시설 및 설비 등에 새로운 살균처리 방법으로의 이용가능성이 높다. 따라서 본 연구에서는 국내에서 유통되고 있는 5종류의 상업적 살균소독제를 aerosol 형태로 model cabinet에서 처리하여 E. coli O157:H7, S. typhimurium, L. monocytogenes에 대한 살균효과를 조사하였다. 과산화수소계와 4급암모늄계를 aerosol 형태로 처리했을 때 세 가지의 병원성 미생물에 대하여 가장 높은 살균력을 관찰하였으며 반면에 다른 종류의 살균소독제인 염소계, 요오드계, 알콜계는 세가지 병원성 미생물을 거의 저해하지 못하거나 아주 약한 저해를 나타냈다. 과산화수소계는 세가지 병원성 미생물에 우수한 살균력(> 4 log reductions)을 나타냈으며 L. monocytogenes에 대하여는 특히 aerosol형태의 4급암모늄계가 강한 살균력을 나타내어 9 log 이상의 저해를 나타내었다. 1.6 MHz와 2.4 MHz 진동자를 비교하였을 때 살균소독제의 종류와 처리된 병원성 미생물에 대하여 차이를 나타내었으나 처리 효과와 특정한 상관관계를 나타내지 않았다. Aerosolization 기술은 새로운 살균기법으로 이용가능성이 높을 것으로 사료되나 응용되는 살균소독제의 종류에 따라서 살균효과에 차이가 크고 미생물이 오염되어 있는 물질 및 표면 등의 처리조건의 차이에 따라서 결과가 달라질 수 있으므로 이 기술의 응용을 위해서는 보다 다양한 조건과 다양한 미생물의 종류에 대한 연구가 이루어져야 할 것으로 사료된다.

Keywords

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