Use of electron spin resonance measurements on irradiated sperma lentil seeds to indicate accidental irradiation


KORKMAZ M., POLAT M.

INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY, vol.38, no.1, pp.1-9, 2003 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 1
  • Publication Date: 2003
  • Doi Number: 10.1046/j.1365-2621.2003.00633.x
  • Journal Name: INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.1-9

Abstract

The results of electron spin resonance studies on gamma-irradiated micro- and macrosperma lentil seeds are reported. Spectra of non-irradiated intact sperma were composed of an equally spaced sextet originating from the presence of Mn2+ ions and a single weak resonance line. Irradiation produced a linear increase in the radical signal intensity in the radiation dose range (0.5-5 kGy) studied, without affecting the Mn2+ signal. Signal intensities of both sperma followed compound exponential decay curves originating from the presence of three different radical species. Heating the sperma cause irreversible decreases in both radical and Mn2+ signal intensities. Two radical species, described in the present work, and a radical of unknown origin were used to explain the experimental results.