Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Evaluation of Effectiveness of Sanitizers and Disinfectants used in Domestic Food Processing Plants

국내 식품가공공장 현장에서의 살균소독제 유효성 평가

  • Published : 2005.12.31
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Abstract

Effects of sanitizers and disinfectants on microorganisms in food-processing plants were investigated. Chlorine and hydrogen peroxide were most effective, showing approximately 2-3 log reductions, among products tested, whereas alcohol showed less than 1 log reduction. Before using sanitizer and disinfectant in food processing plants, aerobic plate, coliforms, and E. coli counts were about $10^1-10^5,\;10^1-10^2$, and below $10\;CFU/cm^2$, respectively. After use of sanitizer, APC decreased to $10^1-10^2$. The result to confirm sanitizing effectiveness for 2 months using showed that Alcohol compound, QAC, hydrogen peroxide compound were effective against Staphylococcus aureus ATCC 6538 and E. coli ATCC 10536 at recommended usage concentrations, whereas effectiveness of chlorine compound decreased from 8 to 4 log 2 weeks after opening of product. Although sanitizers and disinfectants approved by law showed 5 log reduction in vitro for S. aureus ATCC 6538 and E, coli ATCC 10536, sanitizing effectiveness in food processing plants was very low, and effectiveness decreased once used product was stored.

작업 현장에서 사용하는 살균소독제의 유효성을 평가하고 사용되는 제품의 저장기간별 안정성을 조사하였다. 다양한 식품을 생산하는 공장에서 식품가공 시 살균소독제 사용전후 미생물 오염정도를 파악하고 네 가지 대표 살균소독제의 보관기간 별 살균력의 안정성을 조사하기 위하여 2개월 간 저장성 시험을 실시하였다. 8개 식품가공공장에서 실제 사용 중인 살균소독제를 테스트한 결과, 살균소독제 사용 전 일반세균수는 $10^1-10^5CFU/cm^2$, 대장균군수는 $10^1-10^2CFU/cm^2$, 대장균은 $10CFU/cm^2$ 미만이었으며 살균소독제 사용 후 일반세균수는 $10^1-10^3$ 수준으로 감소하였으나 모두 사멸시키지는 못하였다. 살균소독력 지속여부를 S. aureus 와 E. coli를 이용하여 검증한 결과, 권장사용농도에서 alcohol계, hydrogen peroxide계, QAC계 제품은 2개월간 그 효과가 유지되었으나 chlorine계 제품은 개봉 2주 이내에 8 log에서 4 log로 효과가 감소되는 것으로 나타났다. 실제 법적으로 인정을 받은 살균소득제는 in vitro에서 S. aureus와 E. coli를 5 log 감소시켜 그 살균력을 인정받았으나 실제 현장에서는 그 정도의 효과를 거두지 못하고 있으며 개봉 후 즉시 사용하지 않고 보관될 경우 그 효력이 현저히 감소되는 것으로 파악되었다.

Keywords

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