Document Detail

Characterizing the migration of antioxidants from polypropylene into fatty food simulants.
MedLine Citation:
PMID:  11469331     Owner:  NLM     Status:  MEDLINE    
The migration (diffusion and equilibrium) processes of antioxidants (AOs) from polypropylene (PP) films of different thicknesses into n-heptane and 95% ethanol as fatty food simulants were analysed at 20, 37 and 60 degrees C. Heptane fully extracted the AOs from the polymer while a partition equilibrium described the migration to ethanol. The kinetics of migration were also studied via the diffusion coeffcients. As expected, diffusion was found to be faster when the polymer was in contact with heptane, due to polymer swelling by the solvent. The kinetics of the process in ethanol was described by different theoretical expressions which are discussed. Equations disregarding partition equilibrium failed to describe the process and the diffusion coefficient values obtained through them were much smaller than the actual ones and dependent on film thickness. The results also showed the significance of food simulant selection in the analysis of food-packaging interactions and migration variability with thickness.
J A Garde; R Catalá; R Gavara; R J Hernandez
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Food additives and contaminants     Volume:  18     ISSN:  0265-203X     ISO Abbreviation:  Food Addit Contam     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-07-25     Completed Date:  2001-08-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8500474     Medline TA:  Food Addit Contam     Country:  England    
Other Details:
Languages:  eng     Pagination:  750-62     Citation Subset:  IM    
School of Packaging, Michigan State University, East Lansing 48824-1223, USA.
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MeSH Terms
Antioxidants / pharmacokinetics*
Calorimetry, Differential Scanning
Ethanol / chemistry*
Fats / chemistry
Food Packaging
Heptanes / chemistry*
Hot Temperature
Models, Chemical
Polypropylenes / chemistry*
Reg. No./Substance:
0/Antioxidants; 0/Fats; 0/Heptanes; 0/Polypropylenes; 142-82-5/n-heptane; 64-17-5/Ethanol

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

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