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Analysis of Microbial Contamination and Preservatives in Children's Favorite Foods Around Elementary Schools in Gyeonggi and Incheon

경인지역 초등학교 주변 어린이 기호식품의 미생물 오염도 및 보존료 검사

  • Park, Shin-Young (Dept. of Fond Science and Technology, Chung-Ang University) ;
  • Choi, Jin-Won (Dept. of Fond Science and Technology, Chung-Ang University) ;
  • Yeon, Ji-Hye (Dept. of Fond Science and Technology, Chung-Ang University) ;
  • Lee, Min-Jeong (Dept. of Fond Science and Technology, Chung-Ang University) ;
  • Ha, Sang-Do (Dept. of Fond Science and Technology, Chung-Ang University) ;
  • Park, Ki-Hwan (Dept. of Fond Science and Technology, Chung-Ang University) ;
  • Moon, Eun-Sook (Citizen Consumer Korea) ;
  • Ko, Myung-Hee (Citizen Consumer Korea) ;
  • Lee, Ji-Hyun (Research Institute of Food and Nutrition, Yonsei University) ;
  • Cho, Yu-Sean (Dept. of Food and Nutrition, Dangnam Health College) ;
  • Ryu, Kyung (Dept. of Food and Nutrition, Dangnam Health College)
  • 박신영 (중앙대학교 식품공학과) ;
  • 최진원 (중앙대학교 식품공학과) ;
  • 연지혜 (중앙대학교 식품공학과) ;
  • 이민정 (중앙대학교 식품공학과) ;
  • 하상도 (중앙대학교 식품공학과) ;
  • 박기환 (중앙대학교 식품공학과) ;
  • 문은숙 (소비자시민의 모임) ;
  • 고명희 (소비자시민의 모임) ;
  • 이지현 (연세대학교 식품영양과학연구소) ;
  • 조유선 (동남보건대학 식품영양과) ;
  • 류경 (동남보건대학 식품영양과)
  • Published : 2006.02.01

Abstract

Microbial contamination levels and legal preservative appropriation in child foods sampled from the neighborhood of elementary schools were investigated. Contamination levels of total aerobic bacteria in seasoned dried fish slices, bread and snacks, sausages, sugar products and dumplings were $1.70\~6.91,\;1.40\~6.66$, 4.50, $3.48\~5.88$, and $4.79\~4.82\;log_{10}$ CFU/g, respectively. Coliforms in four kinds of foods except for dumplings were $2.30\~6.60,\;4.22\~~5.98$, 2.00, and $2.78\;log_{10}$ CFU/g, respectively. Yeasts and molds in those foods were $0.10\~4.23,\;1.66\~4.91,\;1.46\~1.91,\;1.56\~4.26$, and $1.12\~1.84\;log_{10}$ CFU/g, respectively. S. aureus was isolated in $18\%$ of seasoned dried fish slices ($1.00\~2.84\;log_{10}$ CFU/g), $33\%$ of bread and snacks ($1.70\~1.79\;log_{10}$ CFU/g), $50\%$ of sausages ($3.28\;log_{10}$ CFU/g), $22\%$ of sugar products ($2.16\~2.88\;log_{10}$ CFU/g), and $100\%$ of dumplings $(1.18\~3.31\;log_{10}\;CFU/g)$ B. cereus was isolated in $21\%$ of seasoned dried fish slices $(0.70\~2.48\;log_{10}\;CFU/g)$, $50\%$ of bread and snacks $(0.70\;log_{10}\;CFU/g)$, and $11\%$ of sugar products $(0.30\;log_{10}\;CFU/g)$. Both E. coli and Salmonella spp. were not isolated in all samples. Preservative was only labeled on four products among 15 products but preservative on 13 products including 4 products haying an indication of preservative were not detected. Moreover, $0.30\%$ of sorbic acid was detected in one of Squid products . The results of this study indicated that the hygienic level of child foods in Gyeonggi and Incheon was very poor and need to be improved.

경인지역 초등학교 주변의 문구점과 소형 식품점에서 판매중인 조미건어포류, 빵 및 과자류, 소시지류, 당류가공품류 및 만두를 대상으로 안전성을 평가하기 위해 미생물의 오염도와 식품보존료 사용의 유무 및 함량을 조사${\cdot}$분석하였다. 총호기성균은 만두에서 가장 높은 평균 $4.81\;log_{10}\;CFU/g$의 오염도를 보였으며 그 범위는 $1.40\~6.91\;log_{10}\;CFU/g$로 높은 오염수준을 나타냈다. 대장균군은 빵 및 과자류와 조미건어포류에서 높은 오염수준인 3.73과 $5.10\;log_{10}\;CFU/g$ 오염도를 보였으며 최대 $6.60\;1og_{10}\;CFU/g$까지 검출된 제품이 있었다. S. aureus는 검사 대상 5 제품 모두에서 검출되었고 이 중 만두에서 가장 높은 $100\%(1.18\~3.31\;log_{10}\;CFU/g)$의 검출율을 보였다. B. cereus는 빵 및 과자류와 만두에서는 불검출되었고, 조미건어포류, 소시지류 및 당류가공품류에서만 각각 $20.51\%(0.70\~2.48\;log_{10}\;CFU/g)$, $50\%(0.70\;log_{10}\;CFU/g)$$11.11\%(0.30\;log_{10}\;CFU/g)$의 검출률을 보였다. E. coli와 Salmonella spp.는 모든 제품에서 검출되지 않았다. 식품보존료는 15개 제품 중 조미건어포류의 4개 제품만이 보존료의 사용 표시가 되었으나 이들 4개 제품을 포함한 13개 제품에서 보존료가 검출되지 않았으며 조미건어포류에 속하는 한 개 제품에서는 표시기준에 의거 표시된 소르빈산 $0.02\%$보다 15배$(0.30\%)$ 높은 검출결과가 나왔다. 결론적으로 경인지역 초등학교주변에서 판매되고 있는 식품은 식품의 제조단계에서부터 유통, 판매에 이르기까지 안전을 위한 관리방안이 조속히 수립되어야 한다.

Keywords

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