Korean Journal of Veterinary Service (한국동물위생학회지)

The Korean Society of Veterinary Service (한국동물위생학회)
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A survey for Pb, Cd and microbiological contamination from by-products of cattle in Incheon city

인천지역 소 부산물의 미생물 및 Pb, Cd 오염도 조사

  • Nam, Ji-Hyeon (Incheon Metropolitan City Institute of Health & Environment) ;
  • Joung, Yun-Joung (Incheon Metropolitan City Institute of Health & Environment) ;
  • Yun, Ga-Ri (Incheon Metropolitan City Institute of Health & Environment) ;
  • Hong, Seong-Hee (Incheon Metropolitan City Institute of Health & Environment) ;
  • Ahn, Eun-Jung (Incheon Metropolitan City Institute of Health & Environment) ;
  • Lee, Jung-Goo (Incheon Metropolitan City Institute of Health & Environment) ;
  • Lee, Sung-Mo (Incheon Metropolitan City Institute of Health & Environment)
  • 남지현 (인천광역시보건환경연구원) ;
  • 정윤정 (인천광역시보건환경연구원) ;
  • 윤가리 (인천광역시보건환경연구원) ;
  • 홍성희 (인천광역시보건환경연구원) ;
  • 안은정 (인천광역시보건환경연구원) ;
  • 이정구 (인천광역시보건환경연구원) ;
  • 이성모 (인천광역시보건환경연구원)
  • Received : 2012.08.06
  • Accepted : 2012.08.29
  • Published : 2012.09.30
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Abstract

This study was carried out to investigate the heavy metal and microbiological hazards on by-products (liver, omasum, small intestines) of cattle. From April to October in 2011, one hundred and twenty samples were equally collected from slaughterhouse and meat by-product markets in Incheon city. The total bacteria counts and E. coli count were applied to assess the microbiological quality. Food borne bacteria including Salmonella spp., Listeria monocytogenes, Staphylococcus aureus, Clostridium perfringens and E. coli O157:H7 were also determined. The results were obtained as follows: The undesirable grade (more than $10^5\;CFU/cm^2$) was detected in the by-product from 18.3% (slaughterhouse) and 23.3% (by-product markets). The frequency of generic E. coli (more than $10^2\;CFU/cm^2$) from the slaughterhouse was 20.0%, whereas that of the meat by-product markets was 26.7%. Of the samples from slaughterhouse, 3 (5.0%), 5 (8.3%), and 12 (20.0%) samples were contaminated with Salmonella spp, S. aureus, and C. perfringens, respectively. S. aureus and C. perfringens were also detected in 6 (10.0%) and 25 (41.7%) samples in the meat by-product markets, respectively. Nine of 11 S. aureus isolates harbored toxin gene. However, the cpe gene of C. perfringens was not detected among the 37 isolates. The detection rate was higher in August than in February, April and June. The levels of Cd and Pb in all the samples tended to be low (<0.2 mg/kg). This preliminary data could be used for legislation on the regulation and control of microorganism and heavy metal in by-products of cattle.

Keywords

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