Document Detail

Influence of trace metals, acids and ethanol in food-simulating liquids on the retention of alpha-tocopherol in low-density polyethylene film.
MedLine Citation:
PMID:  11027032     Owner:  NLM     Status:  MEDLINE    
The retention of alpha-tocopherol (vitamin E) in low-density polyethylene (LDPE) film was investigated when in contact with different food-simulating liquids. Variations of the aqueous food simulants approved by the EU for testing of interactions between packaging materials and food, and an alternative fatty food simulant (95% aqueous ethanol) were used to study the influence of trace metals and acids, as well as variation in pH and ethanol concentration, on the stability of alpha-tocopherol in the LDPE film. The presence of trace metals in aqueous media accelerated loss of alpha-tocopherol from the film, while the addition of citric or ascorbic acid counteracted this loss. In contact with aqueous ethanol at a concentration of 50% or higher, the loss of alpha-tocopherol from the film was total. However, with solutions containing less than 50% ethanol, the antioxidant was almost completely retained in the film, unless the temperature was increased from 6 to 40 degrees C. For contact with solutions containing ethanol or trace metals, an increase in temperature resulted in a greater loss of alpha-tocopherol from the LDPE film.
C Wessling; T Nielsen; A Leufvén
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Food additives and contaminants     Volume:  17     ISSN:  0265-203X     ISO Abbreviation:  Food Addit Contam     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2000-10-18     Completed Date:  2000-10-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8500474     Medline TA:  Food Addit Contam     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  713-9     Citation Subset:  IM    
SIK-Swedish Institute for Food and Biotechnology, Göteborg, Sweden.
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MeSH Terms
Acids / chemistry*
Antioxidants / chemistry
Ascorbic Acid / chemistry
Chelating Agents / chemistry
Chromatography, High Pressure Liquid / methods
Citric Acid / chemistry
Copper / chemistry
Ethanol / chemistry*
Food Contamination / analysis,  prevention & control
Food Packaging
Iron / chemistry
Polyethylene / chemistry*
Solvents / chemistry
Trace Elements / chemistry*
Vitamin E / chemistry*
Reg. No./Substance:
0/Acids; 0/Antioxidants; 0/Chelating Agents; 0/Solvents; 0/Trace Elements; 1406-18-4/Vitamin E; 50-81-7/Ascorbic Acid; 64-17-5/Ethanol; 7439-89-6/Iron; 7440-50-8/Copper; 77-92-9/Citric Acid; 9002-88-4/Polyethylene

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

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