Document Detail

Migration of model contaminants from PET bottles: influence of temperature, food simulant and functional barrier.
MedLine Citation:
PMID:  15712524     Owner:  NLM     Status:  MEDLINE    
To simulate post-consumer recycled plastics, selected model contaminants were incorporated into PET bottles using a time saving method. Migration into 3% acetic acid, a cola-type beverage and 95% ethanol was followed during 1 year of storage at 20 and 40 degrees C. Aroma compounds previously found in post-consumer PET material were used as model contaminants. Benzaldehyde was found to migrate to the highest extent. Storage at 40 degrees C affected the bottle material and this might be one reason for the high migration values of these bottles. Migration into ethanol was up to 20 times higher than into 3% acetic acid or a cola-type beverage. Bottles with a functional barrier resisted migration into food simulants even when filled with 95% ethanol and stored for 1 year at 40 degrees C. Differential scanning calorimetry measurements showed that ethanol was interacting with the plastic material. This resulted in a lower glass transition temperature of bottles stored with ethanol compared with bottles stored empty or with other food simulants.
H Widén; A Leufvén; T Nielsen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Food additives and contaminants     Volume:  21     ISSN:  0265-203X     ISO Abbreviation:  Food Addit Contam     Publication Date:  2004 Oct 
Date Detail:
Created Date:  2005-02-16     Completed Date:  2005-06-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8500474     Medline TA:  Food Addit Contam     Country:  England    
Other Details:
Languages:  eng     Pagination:  993-1006     Citation Subset:  IM    
SIK - The Swedish Institute for Food and Biotechnology, SE-402 29 Goteborg, Sweden.
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MeSH Terms
Acetic Acid / chemistry
Carbonated Beverages / analysis
Conservation of Natural Resources
Ethanol / chemistry
Food Contamination / analysis*
Food Packaging*
Polyethylene Terephthalates / chemistry*
Reg. No./Substance:
0/Polyethylene Terephthalates; 64-17-5/Ethanol; 64-19-7/Acetic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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