| Abstract
| - Protocols EN 1786 and EN 1788 for the detection of irradiated food by electron spin resonancespectroscopy (ESR) and thermoluminescence (TL) were not conceived for the detection of irradiatedingredients included in low concentration in nonirradiated food. An enzymatic hydrolysis method,realized at 55 °C, has been developed for the extraction of silicate minerals and bone fragments.When followed by a purification of the extracts by an aqueous solution of sodium polytungstate, thismethod made it possible to detect very low inclusions of irradiated spices (0.05%, wt/wt by TL) includedin various meals (cheeses and precooked meals). Even for food containing together two ingredients(spices and mechanically recovered meat), it was possible to detect and identify them simultaneously. Keywords: Food irradiation; detection of irradiated foods; ingredient; spices; mechanically recoveredmeat; thermoluminescence; ESR
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