Dose-dependency of electron spin relaxations in irradiated fresh mangoes

照射された生鮮果実における電子スピン緩和の線量依存性

菊地 正博; 坂下 哲哉; 舟山 知夫; 鵜飼 光子*; 下山 雄平; 小林 泰彦

Kikuchi, Masahiro; Sakashita, Tetsuya; Funayama, Tomoo; Ukai, Mitsuko*; Shimoyama, Yuhei; Kobayashi, Yasuhiko

Recently, we have found that the radiation-induced radicals remain in irradiated fresh mangoes 9 days after the irradiation. Since lifetime of radicals is related to where unpaired electrons are in the surroundings, interactions of the unpaired electrons are investigated for rough water-rich environments. In fresh mangoes, no difference between irradiated and non-irradiated samples for T values indicates the existence of the energy transfer pathways through chemical bonds. While, dose-dependency of T in flesh and skin was observed. This interaction might be related to the inter-electron distance. Finding of stable radicals in fresh fruits enables one to know -induced radicals with novel methodology of T dose-dependency.