Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Identification of Raw Materials in Processed Meat Products by PCR Using Species-Specific Primer

종 특이 프라이머를 이용한 식육가공품의 사용원료 판별법

  • Park, Yong-Chjun (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Ahn, Chi-Young (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Jin, Sang-Ook (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Lim, Ji-Young (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Kim, Kyu-Heon (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Lee, Jae-Hwang (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Cho, Tae-Yong (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Lee, Hwa-Jung (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration) ;
  • Park, Kun-Sang (Hazardous Substances Analysis Division, Gwangju Regional Korea Food & Drug Administration) ;
  • Yoon, Hae-Sung (Scientific Food Investigation Team, Food Safety Evaluation Department, National Institute of Food & Drug Safety Evaluation, Food & Drug Administration)
  • 박용춘 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 안치영 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 진상욱 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 임지영 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 김규헌 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 이재황 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 조태용 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 이화정 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀) ;
  • 박건상 (광주지방식품의약품안전청 유해물질분석과) ;
  • 윤혜성 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 식품감시과학팀)
  • Received : 2012.01.06
  • Accepted : 2012.03.05
  • Published : 2012.03.31
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Abstract

In this study, a method was developed using molecular biological technique to distinguish an authenticity of meats for processed meat products. The genes for distinction of species about meats targeted at 12S or 16S genes in mitochondrial DNA and the species-specific primers were designed by that PCR products' size was around 200bp for applying to processed products. The target materials were 10 species of livestock products and it checked whether expected PCR products were created or not by electrophoresis after PCR using species-specific primers. The results of PCR for beef, pork, goat meat, mutton, venison, and horse meat were 131, 138, 168, 144, 191, and 142 bp each. The expected PCR products were confirmed at 281, 186, 174, and 238 bp for chicken, duck, turkeymeat, and ostrich. Also, non-specific PCR products were not detected in similar species by species-specific primers. The method using primers developed in this study confirm to be applicable for composite seasoning including beefs and processed meat products including pork and chicken. Therefore, this method may apply to distinguish an authenticity of meats for various processed products.

본 연구에서는 축산물가공품 중 식육원료의 진위여부를 판별하기 위하여 분자생물학적 기법을 이용한 시험법을 개발하였다. 식육원료의 종 판별을 위한 유전자로는 미토콘드리아 DNA에 존재하는 12S 또는 16S 유전자를 대상으로 하였으며, 가공식품에 적용하기 위하여 PCR 산물의 크기는 200bp 내외가 되도록 프라이머(species-specific primer)를 설계하였다. 대상 식품원료로는 축산물 10종을 대상으로 하였으며 프라이머를 사용하여 유전자증폭(PCR) 후 전기영동 하여 예상되는 PCR 산물의 생성유무를 확인하였다. PCR을 실시한 결과 가축인 소고기, 돼지고기, 염소고기, 양고기, 사슴고기, 말고기에 대하여는 각각 131, 138, 168, 144, 191, 142bp에서, 가금류인 닭고기, 오리고기, 칠면조 고기, 타조고기에 대하여는 각각 281, 186, 174, 238bp에서 예상크기의 PCR 산물을 확인하였다. 그리고 프라이머 별로 유사 종에서는 비 특이적 PCR 산물(non-specific PCR product)은 생성되지 않았다. 본 연구에서 개발된 프라이머를 이용한 유전자분석법을 돼지고기 및 닭고기를 함유하는 축산물가공품, 소고기를 함유하는 복합조미식품을 대상으로 시험한 결과 적용 가능함이 확인되어 향후 축산물가공품 중 식육원료의 진위여부 판별에 활용이 가능할 것으로 판단된다.

Keywords

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