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논문 기본 정보

자료유형
학술저널
저자정보
Jae-Jun Ahn (Kyungpook National University) Kashif Akram (Kyungpook National University) Deokjo Jo (Kyungpook National University) Joong-Ho Kwon (Kyungpook National University)
저널정보
고려인삼학회 Journal of Ginseng Research Journal of Ginseng Research Vol.36 No.3
발행연도
2012.7
수록면
308 - 313 (6page)

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초록· 키워드

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Fresh(raw roots), white(dried), and red( steamed-dried) ginseng samples were gamma-irradiated at 0 to 7 kGy. Electron spin resonance (ERS) technique was used to characterize the irradiation status of the samples, targeting the radiation-induced cellulose radicals after different sample pretreatments. All non-irradiated samples exhibited a single central signal central signal (g=2.006), whose intensity showed significant increase upon irradiation. The ESR spectra from the radiation-induced cellulose radicals, with two side peaks(g=2.0201 and g=1.9851) equally spaced (±3 mT) from the central signal, were also observed in the irradiated samples. The core sample analyzed after alcoholic-extraction produced the best results irradiated fresh ginseng samples. In the case of irradiated white and red ginseng samples, the central (natural) and radiation-induced(two-side peaks corresponding to cellulose radical) signal intensities showed llittle improvement on alcoholic-extraction. The water-washing step minimized the effect of Mn²? , but reduced the intensity of side peaks making them difficult to indentify. The effect of different origins was negligible, however harvesting year showed a clear effect on radiation-induced ESR signals.

목차

INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
ACKNOWLEDGMENTS
REFERENCES

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