Document Detail

Evaluation of e-beam, gamma- and X-ray treatment on the chemistry and safety of polymers used with pre-packaged irradiated foods: a review.
MedLine Citation:
PMID:  11407748     Owner:  NLM     Status:  MEDLINE    
Polymers used to package food intended for irradiation must currently receive separate US FDA approvals for e-beam, gamma and X-radiation. The three forms of irradiation have virtually indistinguishable effects on polymers held in vacuum. However, in air, irradiation damage is favoured by slow dose rates, such as that characteristic of gamma irradiation. Irrespective of irradiation type, theory and existing polymer irradiation literature both suggest that radiolytic products in food contact polymers should not present a health hazard due to migration into the foods they contain. Equations are presented which calculate the FDA allowable content of radiolytic products to achieve 'threshold of regulation' clearance and conversion of radiolytic yield values (G-values) into ppb concentration in the treated polymer in conformance with FDA practice. An approach to quantifying the functional barrier of a polymer is discussed.
G Sadler; W Chappas; D E Pierce
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Food additives and contaminants     Volume:  18     ISSN:  0265-203X     ISO Abbreviation:  Food Addit Contam     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-06-15     Completed Date:  2001-06-28     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8500474     Medline TA:  Food Addit Contam     Country:  England    
Other Details:
Languages:  eng     Pagination:  475-501     Citation Subset:  IM    
National Center for Food Safety and Technology, Illinois Institute of Technology, Summit-Argo 60501-1933, USA.
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MeSH Terms
Food Contamination*
Food Irradiation*
Food Packaging*
Gamma Rays
Polymers / radiation effects*
Reg. No./Substance:

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