title: Use of ESR for the detection of irradiated dates (Phoenix dactylifera L.).
abstract: One variety (Aple) of Libyan dry dates (Phoenix dactylifera L.) was irradiated in a 60Co source to absorbed doses of 0.8, 1.0, 1.5 and 2.0 kGy. Unirradiated date stone contains a radical with a single line g = 2.0045, feature A. Irradiation to a dose of 2.0 kGy (the recommended dose for fruits in U.K.) induces the formation of additional radicals with signals g = 1.9895 and 2.0159, feature C. The single line having g = 2.0045 decays in both unirradiated and irradiated samples whereas the additional signals g = 1.9895 and 2.0159 remain almost unchanged over a period of time 15 months stored at room temperature and 4 degrees C.
authors.affiliation: University of Salford, U.K.
authors.forename: M A
authors.initials: MA
authors.lastname: Ghelawi
authors.forename: J S
authors.initials: JS
authors.lastname: Moore
authors.forename: N J
authors.initials: NJ
authors.lastname: Dodd
mesh_terms: D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D005514:Food Irradiation; D005609:Free Radicals / Q000032:analysis / Q000528:radiation effects; D005638:Fruit / Q000737:chemistry / Q000528:radiation effects*; D011874:Radiometry / Q000379:methods*; D012639:Seeds / Q000737:chemistry / Q000528:radiation effects; D013696:Temperature; D013997:Time Factors
chemical_list: D005609:Free Radicals