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Manganese is a candidate for the ionizing radiation-responsive long-lived signals of irradiated food samples detected by electron spin resonance spectroscopy
https://repo.qst.go.jp/records/2002852
https://repo.qst.go.jp/records/2002852bf177e86-b06d-4aaa-8ec5-449be181eb73
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2026-03-02 | |||||||
| タイトル | ||||||||
| タイトル | Manganese is a candidate for the ionizing radiation-responsive long-lived signals of irradiated food samples detected by electron spin resonance spectroscopy | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | journal article | |||||||
| 著者 |
Masahiro Kikuchi
× Masahiro Kikuchi
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | When foods are exposed by ionizing radiation, unpaired electrons can become radiation-induced radicals. Electron spin resonance spectroscopy (ESR) can detect unpaired electrons. Therefore, ESR can only be used to detect persistent radicals that exist in irradiated foods for long periods. That is, only foods containing long-lived radicals are suitable as detection targets for ESR. When radicals in wet irradiated food samples were measured by ESR, manganese(II)-like signals were observed. To clarify the dose responses of Mn in active centre of enzymes, the Mn2+ solution was mixed with a chelator of hexadentate ligands and measured after γ-irradiation. The chelator suppressed signals from Mn2+, but signals appeared after γ-irradiation. The irradiation-induced degradation of Mn-SOD was affected by enzyme concentration. Furthermore, the degradation of Mn-SOD was proceeded during the post-irradiation period. These results suggested that one of long-lived ESR signals of irradiated foods comes from unpaired electrons of transition metal Mn. | |||||||
| 書誌情報 |
Radiation Physics and Chemistry 発行日 2026-02 |
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| 出版者 | ||||||||
| 出版者 | ELSEVIER | |||||||
| DOI | ||||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | 10.1016/j.radphyschem.2026.113764 | |||||||
