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Genotoxicological Safety Evaluation of X-ray Irradiated Four Foods

X-선 조사식품 4종의 유전독성학적 안전성 평가

  • Jung, Da-Woon (Department of Food Science and Nutrition & The Korean Institute for Nutrition, Hallym University) ;
  • Huang, Yu-Hua (Department of Food Science and Nutrition & The Korean Institute for Nutrition, Hallym University) ;
  • Song, Beom-Seok (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Byun, Myung-Woo (School of Culinary Nutrition, Woosong University) ;
  • Kang, Il-Jun (Department of Food Science and Nutrition & The Korean Institute for Nutrition, Hallym University)
  • 정다운 (한림대학교 식품영양학과.한국영양연구소) ;
  • 황옥화 (한림대학교 식품영양학과.한국영양연구소) ;
  • 송범석 (한국원자력연구원 첨단방사선연구소) ;
  • 변명우 (우송대학교 외식조리영양학부) ;
  • 강일준 (한림대학교 식품영양학과.한국영양연구소)
  • Received : 2014.06.09
  • Accepted : 2014.07.04
  • Published : 2014.10.31

Abstract

This study evaluated the genotoxic effects of 30 kGy of X-ray irradiation to four foods (chicken, egg powder, dried green onion, and black pepper). In bacterial reversion assay with Salmonella Typhimurium TA98, TA100, TA1535, and TA1537, the X-ray irradiated foods did not show a significantly increased number of revertant colonies in the presence or absence of the S9 metabolic activation system. In chromosomal aberration tests with Chinese hamster ovary (CHO) cells, the X-ray irradiated foods showed no increase in the frequency of chromosomal aberrations. In in vivo mouse micronucleus assay, the X-ray irradiated foods did not show any increase in the frequency of polychromatic erythrocytes with micronuclei. These results indicate that 30 kGy of X-ray irradiation to four foods (chicken, egg powder, dried green onion, and black pepper) showed no genotoxic effects under these experimental conditions.

본 연구는 방사선 조사식품에 대한 소비자들의 수용성을 증대하고, 감마선조사의 대체기술로 X-선 조사의 상용화를 확대할 목적으로 30 kGy X-선 조사식품 4종(닭고기, 전란분말, 건파, 후추)의 유전독성학적 안전성 평가를 실행하였다. Salmonella Typhimurium TA98, TA100, TA1535 및 TA1537에 대한 X-선 조사식품 4종의 복귀변이 집락 수를 조사한 결과, 대사 활성계 도입 및 부재 시 모두 시험 적용 농도인 $40{\sim}5,000{\mu}g/plate$의 범위에서 복귀변이 집락 수의 농도 의존적인 증가 혹은 감소를 보이지 않았다. 그리고 포유류 배양세포를 이용한 염색체 이상 시험에서도 X-선 조사식품 4종은 $625{\sim}5,000{\mu}g/mL$의 시험 적용 농도에서 염색체 이상 유발능이 5% 미만이어서 염색체 이상을 유발하지 않는 것으로 나타났다. 또한 설치류 망상적혈구를 이용하여 X-선 조사식품 4종의 소핵 형성 시험을 수행한 결과 시험 적용 농도인 250~2,000 mg/kg의 범위에서 소핵을 가진 망상적혈구의 출현율이 음성대조군과 유의한 차이를 나타내지 않아 소핵을 유발하지 않음을 확인하였다. 이상의 결과를 바탕으로 위해 분석 결과 30 kGy X-선 조사식품 4종(닭고기, 전란분말, 건파, 후추)은 본 시험조건에서 유전 독성이 없는 것으로 나타났다.

Keywords

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