Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effect of Combination of Chitosan Coating and Gamma Irradiation on the Foodborne Pathogen Reduction and Nutritional Properties of Chicken Egg

키토산 코팅 및 감마선 조사에 의한 계란에 오염된 위해 미생물 제어 및 영양학적 특성 평가

  • Kim, Hyun-Joo (Department of Food Science and Technology, Chung-Ang University) ;
  • Yun, Hye-Jeong (Department of Animal Science and Biotechnology, Chungnam National University) ;
  • Jung, Samooel (Department of Animal Science and Biotechnology, Chungnam National University) ;
  • Jung, Yeon-Kuk (Department of Animal Science and Biotechnology, Chungnam National University) ;
  • Ham, Jun-Sang (Division of Quality Control and Utilization, National Institute of Animal Science) ;
  • Jin, Shil (Department of Animal Science and Biotechnology, Chungnam National University) ;
  • Jo, Cheorun (Department of Animal Science and Biotechnology, Chungnam National University)
  • 김현주 (중앙대학교 식품공학과) ;
  • 윤혜정 (충남대학교 동물자원생명과학과) ;
  • 정사무엘 (충남대학교 동물자원생명과학과) ;
  • 정연국 (충남대학교 동물자원생명과학과) ;
  • 함준상 (국립축산과학원 축산물이용과) ;
  • 진실 (충남대학교 동물자원생명과학과) ;
  • 조철훈 (충남대학교 동물자원생명과학과)
  • Received : 2010.02.22
  • Accepted : 2010.03.10
  • Published : 2010.03.31
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Abstract

The effect of combination of chitosan coating and gamma irradiation on Escherichia coli inactivation and nutritional properties of shell egg was investigated. The E. coli inoculated on shell egg was not detected by 2 kGy of gamma irradiation at day 0 and/or chitosan coating (1%, pH 5.0) after 3 days of storage. There was no E. coli detected thereafter. In the contents of moisture, crude fat, crude protein, ash, retinol, phospholipid, and minerals, no difference was found by treatment combination. However, the contents of cholesterol and carotenoids were reduced by irradiation of 2 kGy (P<0.05). Results suggest that the combination of gamma irradiation (2 kGy) and chitosan coating (1%) can be a good method to improve the safety and prolonged shelf-life of egg because of effective pathogen inactivation without significant adverse changes in nutritional quality.

본 연구는 계란의 위생화 및 저장성 연장에 관한 연구의 일환으로 키토산 코팅 및 감마선 조사 병용처리에 의한 계란에 오염된 위해 미생물 제어 및 영양학적 특성을 평가하였다. 키토산 코팅과 감마선 조사 병용처리한 계란에 E. coli를 접종한 결과 2 kGy 방사선 조사에 의해 검출한계 이하 수준으로 감소하였으며, 키토산 코팅시 3일 후부터 검출되지 않았다. 수분, 조단백질 및 조회분 등 일반 성분은 난백 및 난황 모두에서 차이를 나타내지 않았으며, retinol, 인지질과 미량 원소의 함량도 처리에 따른 차이가 없었다. 난황의 콜레스테롤 및 carotenoid의 함량은 키토산 코팅 유무와 상관없이 방사선 조사에 의해 그 함량이 감소하였다(P<0.05). 따라서 키토산 코팅(1%)과 감마선 조사(2 kGy) 병용처리는 계란의 미생물학적 안전성을 확보할 수 있으며, 영양학적 성분변화에 큰 영향을 끼치지 않아, 향후 계란의 위생화 및 저장성 연장을 위해 산업적으로 적용이 가능할 것이라고 판단된다.

Keywords

References

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