ESR Characterization of Irradiated Peony Root, A Medicinal Plant Containing Crystalline Sugars
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- YAMAOKI Rumi
- Osaka University of Pharmaceutical Sciences
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- KIMURA Shojiro
- Osaka University of Pharmaceutical Sciences
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- OHTA Masatoshi
- Niigata University
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Abstract
The ESR spectral property of irradiated peony root was studied during development of a system for detection of irradiated medicinal plants containing crystalline sugars. The plant had a weak ESR signal near g=2.005 before electron beam-irradiation. After 10kGy irradiation, the line shape became broader and cellulose-like signal:a pair of lines at 6mT across the center signal near g=2.005 and sugar-like spectrum:a broader line with more than 6mT of overall spectrum width, was observed. The ESR intensity decreased considerably at 30 days post-irradiation and was stable thereafter. The stable ESR line shape of irradiated peony root resembled that of irradiated sucrose, and the intensity 30 days post-irradiation increased linearly as a function of sucrose content. This result shows that the radical concentration correlation to sucrose content in irradiated plant material is predictable.
Journal
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- RADIOISOTOPES
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RADIOISOTOPES 62 (9), 631-637, 2013
Japan Radioisotope Association
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Details 詳細情報について
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- CRID
- 1390282679133901696
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- NII Article ID
- 10031194100
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- NII Book ID
- AN00351589
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- COI
- 1:CAS:528:DC%2BC3sXhvVagurvF
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- ISSN
- 18844111
- 00338303
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- NDL BIB ID
- 024900961
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed