Detection of irradiated ingredients included in low quantity in non-irradiated food matrix. 1. Extraction and ESR analysis of bones from mechanically recovered poultry meat.
Protocol EN 1786 for the detection of irradiated food by electron spin resonance (ESR) spectroscopy was not conceived for the detection of irradiated bone-containing ingredients included in low concentration in non-irradiated food. An enzymatic hydrolysis method, realized at 55 degrees C, has been developed for the extraction of the bone fraction. When followed by a purification of the extracts by an aqueous solution of sodium polytungstate, this method made possible the detection of irradiated mechanically recovered poultry meat at very low inclusions (0.5%, wt/wt by ESR) in various meals (quenelles and precooked meals).
Marchioni
Eric
E
Laboratoire de Chimie Analytique et Sciences de l'Aliment (UMR 7512), Faculté de Pharmacie, 74 route du Rhin, F-67400 Illkirch, France. eric.marchioni@pharma.u-strasbg.fr
Horvatovich
Péter
P
Charon
Helène
H
Kuntz
Florent
F
D000818:Animals; D001842:Bone and Bones / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D005504:Food Analysis / Q000379:methods*; D005514:Food Irradiation; D011200:Poultry; D012474:Salmon