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http://dx.doi.org/10.3746/jkfn.2002.31.5.910

Genotoxicological Safety of Hot Water Extracts of the γ-Irradiated Astragali Radix, Atractylodes Rhizoma, and Cimicifugae Rhizoma in Vitro  

박혜란 (한국원자력연구소 방사선식품ㆍ생명공학기술 개발팀)
함연호 (한국원자력연구소 방사선식품ㆍ생명공학기술 개발팀)
정우희 (한국원자력연구소 방사선식품ㆍ생명공학기술 개발팀)
정일윤 (한국원자력연구소 방사선식품ㆍ생명공학기술 개발팀)
조성기 (한국원자력연구소 방사선식품ㆍ생명공학기술 개발팀)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.31, no.5, 2002 , pp. 910-916 More about this Journal
Abstract
As the utilization of medicinal herbs in food and bio-industry increases, safe hygienic technologies for them are demanded. To consider the possibility of application of radiation technology for this purpose, the genotoxi-cological safety of three r -irradiated medicinal herbs were studied. Astragali Radix, Atractylodes Rhizoma and Cimicifugae Rhizoma were irradiated at 10 kGy, and then were extracted with hot water. The genotoxicity of the extracts was examined in two short-term in vitro tests: (1) Salmonella reversion assay (Ames test) in strains of TA98 and TA100; (2) Micronucleus test in cultured Chinese hamster ovary (CHO) cells. The extract was treated at maximum doses of 5 mg/plate in Salmonella reversion assay, and 1 mg/mL in micronucleus test where growth of CHO cells was inhibited by 50%. In Salmonella reversion assay with or without metabolic activation, both ex-tracts of irradiated and non-irradiated herbs showed no significant differences in formation of revertant colonies compared with the negative control. And also in micronucleus test, the incidences of micronucleus in CHO cells cultured with extracts of irradiated herbs were almost same as negative control in less than 3%. These results of two in vitro tests suggest that ${\gamma}$-irradiated herbs do not show mutagenicity and cytogenetic toxicity. Further tests of in vivo genotoxicity and chronic toxicity are needed to ascertain the safety of ${\gamma}$-irradiated herbs.
Keywords
herbs; irradiation; Ames test; micronucleus test; mutagenicity;
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