Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Effect of Wildlife Access on Microbial Safety of Irrigation Water Used in the Cultivation of Chinese Cabbage in Goesan

야생동물 출입이 괴산 지역 배추 재배 농업용수의 미생물 안전성에 미치는 영향

  • Yun, Bohyun (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Lim, Sang-Jin (Department of Forest Environment System, Kangwon National University) ;
  • Park, Young-Chul (Department of Forest Environment System, Kangwon National University) ;
  • Hung, Nguyen Bao (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Park, Daesoo (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Won-Il (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Jung, Gyu Seok (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Ham, Hyeonheui (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Hyun Ju (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Ryu, Kyoungyul (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Se-Ri (Microbial Safety Team, Agro-Food Safety & Crop Protection Department, National Institution of Agricultural Sciences, Rural Development Administration)
  • 윤보현 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 임상진 (강원대학교 산림환경시스템학과) ;
  • 박영철 (강원대학교 산림환경시스템학과) ;
  • 웅웬바오훙 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 박대수 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 김원일 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 정규석 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 함현희 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 김현주 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 류경열 (국립농업과학원 농산물안전성부 유해생물팀) ;
  • 김세리 (국립농업과학원 농산물안전성부 유해생물팀)
  • Received : 2018.10.09
  • Accepted : 2018.11.19
  • Published : 2018.12.30
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Abstract

Water is an important component in the production of fresh produce. It is mainly used for irrigation and application of pesticides and fertilizers. Several outbreaks cases related to fresh produce have been reported and water has been identified as the most likely source. On the other hand, wildlife has been identified as a possible source of the waterborne pathogens. The purpose of this study was to investigate the effect of wildlife access on irrigation water used in the cultivation of Chinese cabbage in Goesan. The frequency of wild animals access to upstream water source and the contamination level of bacteria such as Escherichia coli and Enterococci of irrigation water used in Chinese cabbage farm was examined. A total of 37 wildlife including the wild bear and water deer were observed in upstream of water source during the cultivation of Chinese cabbage. The result indicated the presence of hygienic indicator bacteria from the upstream where there is no human access. The contamination range of coliforms, E. coli, and Enterococcus spp. Detected in the irrigation water were 2.13~4.32 log MPN / 100 mL, 0.26~2.03 log MPN / 100 mL, and 1.43~3.49 log MPN / 100 mL, respectively. Due to low water temperatures, the contamination levels of coliform bacteria and E. coli in the irrigation water during harvesting time was lower compared to those recorded during transplanting of Chinese cabbage. However, no significant difference was detected in the number of Enterococci during the cultivation of Chinese cabbage. The results indicated the need to manage the microbial risk in irrigation water to enhance safety in cultivation of Chinese cabbage.

유해 미생물에 오염된 농업용수는 배추의 재배기간 동안 지속적인 식중독세균 오염의 주원인이 될 수 있다. 농업용수는 야생동물 및 가축의 분변에 의해 오염되고 있다. 따라서 본 연구는 야생동물의 출입이 농업용수의 미생물학적 안전성에 미치는 영향을 조사하기 위하여 수행하였다. 이를 위하여 산악지대에 위치한 배추 재배농가에 사용되는 농업용수의 상류에서부터 하류까지 시기별 위생지표세균 오염도와 수원 상류의 야생동물의 출입 빈도를 조사하였다. 배추를 재배하는 기간 동안 멧돼지, 고라니 등 총 37회의 야생동물들이 농업용수 수원 근처에서 관찰되었다. 농업용수의 위생지표세균을 조사한 결과, 3종의 위생지표세균 모두 사람의 출입이 없는 상류에서부터 검출되었으며 대장균군, 대장균, 장구균의 오염도는 각각 2.13~4.32 log MPN/100mL, 0.26~2.03 log MPN/100mL, 1.43~3.49 log MPN/100mL 수준이었다. 대장균군과 대장균의 오염수준은 배추 이식기 보다 수온이 낮은 수확기에 낮았으나 장구균은 시기별로 큰 차이가 없었다. 본 연구의 결과로 미루어 볼 때 농업용수의 오염은 야생동물의 출입과 관련이 있을 것으로 판단된다.

Keywords

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