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Conference: Bucharest University Faculty of Physics 2001 Meeting

Section: Atomic and Molecular Physics; Astrophysics

Title:

Irradiated Sugars as Possible Materials for EPR Dosimetry

Authors:

M. Brasoveanu*, V.V. Grecu**, M.N. Grecu***

Affiliation:

*) National Institute of Laser, Plasma and Radiation Physics, **) Physics Faculty University of Bucharest, ***) National Institute of Materials Physics, Bucharest

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Keywords:

Abstract:

Irradiation of solid food materials induces stable radical species. Their EPR spectra are used for identification of radical nature, and their intensity for determination of irradiation dose, a problem which receives much attention due to the growth in the irradiated food market [1]. Sugars a quite sensitive to electron or g-ray irradiation having a large irradiation yield. Several radicals, quite stable at room temperature, are formed; one can use them for dose measurements. Measurements on irradiated sucrose, glucose and fructose samples are reported. The radicals are identified according with the data from literature[2,3]; dose dependence are given. The differences between the selected sugars are discussed in terms of their structure and stability. References: [1] G.A.Schreiber, N. Helle, K.W. Bogl, Int.J.Radiation Viology, 63, 105, 1993. [2] V.V. Grecu, R. Georgescu, C. Lupu, S. Pascanu, Proc. 3-rd Balkan Phys. Union Conf., Cluj-Napoca, 1997 [3].