Safety of Polyethylene Terephthalate Food Containers Evaluated by HPLC, Migration Test, and Estimated Daily Intake

A comparative high‐pressure liquid chromatography (HPLC) analysis of monomers, terephthalic acid (TPA), isophthalic acid (IPA), and dimethyl terephthalate (DMT) from polyethylene terephthalate (PET) food containers was conducted. Monomer linearities and sensitivities were calibrated between establis...

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Bibliographic Details
Published in:Journal of food science 2008-08, Vol.73 (6), p.T83-T89
Main Authors: Park, H.-J., Lee, Y.J., Kim, M.-R., Kim, K.M.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chromatography
Chromatography, High Pressure Liquid - methods
Comparative analysis
Consumer Product Safety
Containers
Equipment Reuse
estimated daily intake
Food Contamination - analysis
Food industries
Food Packaging - methods
Food science
Fundamental and applied biological sciences. Psychology
General aspects
Humans
Hygiene and safety
isophthalic acid
Migration
migration test
Polyethylene terephthalate
Polyethylene Terephthalates - analysis
Polyethylene Terephthalates - chemistry
Polyethylene Terephthalates - toxicity
Safety
terephthalic acid
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Summary:A comparative high‐pressure liquid chromatography (HPLC) analysis of monomers, terephthalic acid (TPA), isophthalic acid (IPA), and dimethyl terephthalate (DMT) from polyethylene terephthalate (PET) food containers was conducted. Monomer linearities and sensitivities were calibrated between established and novel HPLC analyses. Safety of PET containers was evaluated with newly established detection methods for TPA, IPA, and DMT. Migration of the 3 monomers into food simulants (water, 4% acetic acid, 20% alcohol, and n‐heptane) from 56 PET containers collected from open markets was monitored. Migrated monomers were not detected over 0.1 ppm of detection limit. The corresponding estimated daily intake was measured to confirm the safety of these publicly available PET containers and to permit comparison to the specific migration limit of the European Union. The estimated daily intake of 3 monomers migrating from PET was 0.0384 mg/kg each. This represented only 0.6% of the European Union's specific migration limit, confirming the safety of the examined containers.
ISSN:0022-1147
1750-3841
DOI:10.1111/j.1750-3841.2008.00840.x