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 of Gamma-Irradiated Kwamegi(semi-dried Colobabis seira)

감마선 조사된 과메기의 유전독성학적 안전성 평가

  • 육홍선 (충남대학교 식품영양학과) ;
  • 정영진 (충남대학교 식품영양학과) ;
  • 송현파 (한국원자력연구소 방사선식품ㆍ생명공학연구팀) ;
  • 이주운 (한국원자력연구소 방사선식품ㆍ생명공학연구팀) ;
  • 변명우 (한국원자력연구소 방사선식품ㆍ생명공학연구팀)
  • Published : 2004.01.01
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Abstract

Gamma irradiation at 5 and 10 kGy was applied to Kwamegi (semi-dried Colobabis seira) for their possible hygiene quality and carried out genotoxicological safety. In vitro genotoxicological safety of each 5 and 10 kGy-irradiated Kwamegi was evaluated by Salmonella typhimurium (TA98, TA100, TA1535 and TA1537) and E. coli WP2 uvrA reversion assay, SOS chromotest (Escherichia coli PQ37) and chromosome aberration test (Chinese hamster lung fibroblast cells) in the absence and presence of an exogenous metabolizing system (S9 mix). Gamma-irradiated samples were not different from nonirradiated-control to respective in vitro tests. And in vivo micronucleus test using ICR mice (male) micronucleus was not observed. Kwamegi exposed to 10 kGy-gamma ray revealed negative results in these three in vitro mutagenetic tests and in vivo micronucleus test up to 10,000 $\mu\textrm{g}$/plate, respectively. The results indicated that 5 and 10 kGy gamma-irradiated Kwamegi (semi-dried Colobabis seira) did not have mutagenicity.

과메기의 위생화를 위한 방사선 조사기술의 이용 가능성을 검토할 목적으로 방사선 조사를 실시한 후 독성학적 안전성 실험인 in vitro Ames test SOS chromotest 및 CHL 세포를 이용한 염색체 이상시험과 ICR 수컷 마우스를 이용한 in vivo 소핵세포실험을 실시하였다. 감마선 조사 및 비조사된 과메기의 Salmonella typhimurium(TA98, TA100, TA1535, TA1537)과 Escherichia coli WP2 uvrA 균주에 대한 복귀변이 집락수 시험, SOS chromotest(Escherichia coli PQ37) 시험 및 CHL 세포를 이용한 염색체 이상시험을 수행한 결과 물추출물과 용매추출물 및 대사활성계 도입 혹은 부재시 모두, 모든 시험균주에서 시험적용 농도인 10,000 $\mu\textrm{g}$/plate까지의 농도에서 감마선 조사된 시료는 비조사된 시료와 같이 음성을 나타내었다. 또, 감마선 조사 및 비조사된 과메기의 in vivo 소핵세포실험에서도 소핵이 발견되지 않았다. 따라서, 10 kGy까지 고선량 감마선 조사된 과메기는 위 수행된 in vitro 및 in vivo 유전독성시험을 실시한 결과 음성을 나타낸 것으로 보아 유전독성학적으로 돌연변이원성이 없음을 확인할 수 있었다.

Keywords

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