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KMID : 0903519860290030288
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1986 Volume.29 No. 3 p.288 ~ p.293
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Preservation of Washed Fresh Ginsengs by Gamma Irradiation
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조한옥/Cho, Han Ok
이재원/권중호/변명우/Lee, Jae Won/Kwon, Joong Ho/Byun, Myung Woo
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Abstract
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The washed fresh ginsengs packed with air, vaccum and nitrogen gas were irradiated at the levels of 1, 2 and 3kGy gamma radiation and then stared at 4∼5℃ for 90days to investigate the effects of gamma radiation on microbial inactivation, eelworm disinfestation and physicochemical changes. After a 90 day storage, 2∼3kGy irradiated groups showed 20% of weight loss and 10% of rot while non-irradiated group 100% and 20% or more, respectively. Also the irradiated groups showed somewhat lower values of specific gravity, color density and hardness immediately after irradiation, thereafter higher value of them with storage time than those of non-irradiated group. The irradiation increased the yields of ginseng extract and crude saponins but no effects on the proximate composition and TLC and HPLC patterns of saponin. The food-borne microorganisms decreased in viable cell counts by 2∼3 log cycles with 2∼3kGy radiation and the eelworms were completely disinfested with 1 kGy radiation.
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