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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:15 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Atomic and Molecular Physics; Astrophysics
Title:
EPR investigation of some irradiated edible mushrooms
Authors:
D. Negrut 1, V. Bercu 2, O.G. Duliu 2
Affiliation:
1National Institute for Physics and Nuclear Engineering-Horia Hulubei, P.O. Box MG-6, 077125 Magurele (Ilfov), Romania
2University of Bucharest, Department of Atomic and Nuclear Physics, P.O. Box MG-11, 077125 Magurele (Ilfov), Romania
E-mail
vbercu@gmail.com
Keywords:
EPR, irradiated mushrooms
Abstract:
The X-band EPR spectra of two species of Basidiomycota: Agaricus campestris and Pleurotus ostreatus and one specie of Ascomycota: Morchella esculenta irradiated with 60Co gamma ray at doses up to 11 kGy were investigated at room temperature. Every one of investigated specimen are among the best prized edible mushrooms.
All samples presented intense EPE spectra consisting of one (Pleurotus ostreatus, Morchella esculenta) ore more lines (Agaricus campestris) whose intensity monotonously increase with the dose. Isothermal annealing has showed in the case of irradiated Agaricus samples a remarkable stability of EPR spectra. Moreover, the amplitude of one line positively correlates with the annealing time.
All observed peculiarities recommend mushrooms as suitable systems for future EPR investigations concerning both time stability and the nature of radiation centers.
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