EPR study of gamma induced radicals in amino acid powders.
To better understand the composite character of amino acids EPR spectra, the radiolysis and reactions which occurred after irradiation of amino acids, a comparative EPR study of a few simple amino acids has been made in order to identify qualitatively and quantitatively the different radiation-induced radicals in amino acid powders. A spin-trapping methodology has been developed and carried out on irradiated glycine, alanine and valine.
Talbi
S
S
LRMO, case D52, UMR 6171, Faculté des Sciences de Saint-Jérôme, 13397 Marseille 20, France.
Raffi
J
J
Aréna
S
S
Colombani
J
J
Piccerelle
P
P
Prinderre
P
P
Dolo
J-M
JM
D000409:Alanine / Q000737:chemistry / Q000528:radiation effects; D000596:Amino Acids / Q000737:chemistry / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000737:chemistry / Q000528:radiation effects*; D005720:Gamma Rays; D005998:Glycine / Q000737:chemistry / Q000528:radiation effects; D015394:Molecular Structure; D011208:Powders; D013696:Temperature; D013997:Time Factors; D014633:Valine / Q000737:chemistry / Q000528:radiation effects
D000596:Amino Acids; D005609:Free Radicals; D011208:Powders; D014633:Valine; D000409:Alanine; D005998:Glycine