Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Genotoxicological Safety Evaluation of Imported Oranges Irradiated with Ionizing Energy

이온화 에너지를 조사한 수입 오렌지의 유전독성학적 안전성 평가

  • Huang, Yu-Hua (Dept. of Food Science and Nutrition & The Korean Institute for Nutrition, Hallym University) ;
  • Jung, Da-Woon (Dept. of Food Science and Nutrition & The Korean Institute for Nutrition, Hallym University) ;
  • Kang, Il-Jun (Dept. of Food Science and Nutrition & The Korean Institute for Nutrition, Hallym University)
  • 황옥화 (한림대학교 식품영양학과.한국영양연구소) ;
  • 정다운 (한림대학교 식품영양학과.한국영양연구소) ;
  • 강일준 (한림대학교 식품영양학과.한국영양연구소)
  • Received : 2014.02.06
  • Accepted : 2014.02.27
  • Published : 2014.06.30
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Abstract

This study was carried out to evaluate the genotoxicity of imported oranges irradiated with ionizing energy (0.5 and 1 kGy). In bacterial reversion assays with Salmonella Typhimurium TA98, TA100, TA1535, and TA1537, imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no significant increase in the number of revertant colonies in both the absence and presence of the S9 metabolic activation system. In chromosomal aberration tests with Chinese hamster ovary (CHO) cells, imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no increase in the frequency of chromosomal aberrations. In in vivo mouse micronucleus assay, imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no increase in the frequency of polychromatic erythrocytes with micronucleus. These results indicate that imported oranges irradiated with ionizing energy (0.5 and 1 kGy) showed no genotoxic effects under these experimental conditions.

본 연구에서는 방사선 조사 오렌지의 수입 가능성이 높아짐에 따라 이들의 안전성을 검토할 목적으로 0.5, 1 kGy 감마선 조사 수입 오렌지의 복귀돌연변이 시험, 소핵 및 염색체 이상시험의 유전독성학적 안전성 평가를 수행하였다. S. Typhimurium TA98, TA100, TA1535 및 TA1537에 대한 감마선 조사 수입 오렌지(0.5, 1 kGy)의 복귀변이 집락수를 조사한 결과, 대사활성계 도입 및 부재 시 0.625~10 mg/plate의 범위에서 복귀변이 집락수의 농도 의존적인 증가 혹은 감소를 보이지 않았다. 포유류 배양세포를 이용한 염색체이상시험에서 0.5, 1 kGy 감마선 조사 수입 오렌지는 1.25~10 mg/mL의 시험적용 용량에서 염색체이상 유발능이 5% 미만이어서 염색체이상을 유발하지 않는 것으로 나타났다. 설치류 망상적혈구를 이용한 소핵형성 시험을 수행한 결과, 시험적용 용량인 250~2,000 mg/kg의 범위에서 0.5, 1 kGy 감마선 조사 수입 오렌지는 소핵을 가진 망상적혈구의 출현율이 음성대조군과 유의한 차이를 나타내지 않아 소핵을 유발하지 않음을 확인하였다. 이상의 결과, 0.5, 1 kGy 감마선 조사 수입 오렌지는 본 시험조건에서 유전독성이 없는 것으로 나타났다.

Keywords

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