ESR study of free radicals in mango.
An electron spin resonance (ESR) spectroscopic study of radicals induced in irradiated fresh mangoes was performed. Mangoes in the fresh state were irradiated with gamma-rays, lyophilized and then crushed into a powder. The ESR spectrum of the powder showed a strong main peak at g=2.004 and a pair of peaks centered at the main peak. The main peak was detected from both flesh and skin specimens. This peak height gradually decreased during storage following irradiation. On the other hand, the side peaks showed a well-defined dose-response relationship even at 9 days post-irradiation. The side peaks therefore provide a useful means to define the irradiation of fresh mangoes.
Kikuchi
Masahiro
M
Quantum Beam Science Directorate, Japan Atomic Energy Agency, Takasaki, Gunma, Japan. kikuchi.masahiro@jaea.go.jp
Hussain
Mohammad S
MS
Morishita
Norio
N
Ukai
Mitsuko
M
Kobayashi
Yasuhiko
Y
Shimoyama
Yuhei
Y
D000818:Animals; D004307:Dose-Response Relationship, Radiation; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D005514:Food Irradiation; D005609:Free Radicals / Q000032:analysis*; D031022:Mangifera / Q000737:chemistry / Q000528:radiation effects; D011839:Radiation, Ionizing; D013242:Sterilization / Q000379:methods
D005609:Free Radicals