Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Microbial Contamination Analysis for Drinking Water, Foodstuff, and Cooked Food for Foodservice Operation

단체급식소의 음용수, 식재료와 조리식품의 세균 오염분석

  • Cho, Sun-Kyung (Department of Food Science and Biotechnology, Gachon University) ;
  • Park, Jong-Hyun (Department of Food Science and Biotechnology, Gachon University)
  • 조선경 (가천대학교 식품생물공학과) ;
  • 박종현 (가천대학교 식품생물공학과)
  • Received : 2012.04.02
  • Accepted : 2012.05.01
  • Published : 2012.08.31
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Abstract

In order to evaluate the microbial safety of the foodstuffs and manus in regards to foodservice operations, the total of 1,051 samples of drinking waters, vegetables, and cooked foods were collected. Total viable count (TVC), coliform group, and pathogens were analyzed. Twenty five percent samples of 441 drinking waters showed high contamination of above 2 log CFU/g TVC. Twenty percent of the waters were contaminated by above one log CFU/g coliform. Forty percent of non-heated food, Moochim, were contaminated by above 5 log CFU/g TVC and 26% of Moochim were contaminated by above 2 log CFU/g coliform. Bacillus cereus and Eschericia coli were detected on boiled rice and kimchi, and B. cereus was detected with a high ratio. Therefore, the foodstuffs and manus regarding foodservice operations appear to be generally safe. However, efficient microbial control for drinking water and Moochim-style food is necessary and in particular, careful management to reduce microbial contamination should be applied to drinking water.

단체급식소가 식품안전에서 중요한 관리장소이므로 이들 메뉴 미생물 오염을 분석하여 안전성을 평가하고자 하였다. 441점의 접객용 음용수, 고오염 메뉴인 610점의 채소류와 조리식품 등 총 1,051점을 수집하여 총세균, 대장균군, 식중독 세균들의 오염을 분석하였다. 음용수의 25%는 2 log CFU/mL보다 높은 세균이 오염되어 있었고 대장균군은 약 20%시료에서 1 log CFU/g을 초과하여 검출되었다. 식재료인 채소류의 경우 부추, 양파, 마늘 등에서 총균수 6 log CFU/g 이상인 비율이 약 40, 30, 80%로 나타났다. 당근, 상추, 근대 등에서 대장균군3 log CFU/g 이상이 60, 30, 30%로 나타났다. 대부분의 조리식품은 총세균과 대장균군이 매우 낮게 나타났다. 그러나 비가열 식품인 무침류는 총세균 5 log CFU/g 이상의 시료가 40%, 대장균군수가 2 log CFU/g 이상의 시료가 26%로 미생물 오염도의 관리에 특별한 주의가 필요한 메뉴 유형인 것으로 보인다. 대부분의 식중독 세균은 검출되지 않았지만 B. cereus와 E. coli가 밥과 김치에서 분리되었고 B. cereus가 높은 비율로 밥에서 검출되었다. 그러므로 단체급식소 메뉴는 미생물 안전성이 높은 것으로 판단되나 일부 음용수, 근채류, 무침류 등은 효과적인 미생물제어가 필요한 것으로 보인다. 특히 음용수의 경우는 세균 오염이 되지 않도록 관리가 철저히 이루어질 필요가 있는 것으로 보인다.

Keywords

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