Document Detail

Import control of irradiated foods by the thermoluminescence method.
MedLine Citation:
PMID:  8456562     Owner:  NLM     Status:  MEDLINE    
A thermoluminescence (TL) method was applied for the import control of irradiated foods. The method is based on the determination of the TL of mineral contaminants in foods. Detection of irradiation was incorporated in official Finnish control procedures in spring 1990. For foodstuffs with a reduced microbe content and in which no fumigant residues are found, possible irradiation is investigated by the TL method. The minerals are separated from the foods in different ways: picking is used for spices; water rinsing for herbs, spices, berries and mushrooms; high-density liquid to separate the organic material from the mineral fraction in seafood; and carbon tetrachloride for foods forming gels with water. To date about 140 food samples have been analysed for control purposes: 50 samples of herbs and spices, 25 samples of berries and mushrooms and 65 samples of seafood. Of these, 14 samples of herbs and spices and 5 samples of seafood were shown to have been irradiated. Differences in TL intensity between irradiated and unirradiated samples were at least 1 and usually 3-4 orders of magnitude.
S Pinnioja; T Autio; E Niemi; O Pensala
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Zeitschrift für Lebensmittel-Untersuchung und -Forschung     Volume:  196     ISSN:  0044-3026     ISO Abbreviation:  Z Lebensm Unters Forsch     Publication Date:  1993 Feb 
Date Detail:
Created Date:  1993-04-20     Completed Date:  1993-04-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7509812     Medline TA:  Z Lebensm Unters Forsch     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  111-5     Citation Subset:  IM    
Department of Radiochemistry, University of Helsinki, Finland.
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MeSH Terms
Food Irradiation*
Food Microbiology
Minerals / analysis
Thermoluminescent Dosimetry*
Reg. No./Substance:

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