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Development of a Long-term Migration Test Method for Plastic Food Utensils, Containers, and Packaging.

Chiharu Mizuguchi-Fukase¹, Asako Ozaki¹, Eri Kishi¹

¹Osaka Institute of Public Health, 1-3-3, Nakamichi, Higashinari-ku, Osaka, 537-0025, Japan.

Food Safety (Tokyo, Japan)

|March 20, 2026

Summary

This summary is machine-generated.

Establishing accelerated migration testing for plastic food packaging requires long-term tests. This study developed a reliable LC-MS/MS method, addressing solvent spoilage and substance adsorption to enable accurate accelerated testing conditions.

Keywords:

food containers food packaging food utensils long-term testing migration test method plastics

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Published on: December 11, 2014

Area of Science:

Food safety
Analytical chemistry
Polymer science

Background:

Migration testing is crucial for plastic food contact materials.
Long-term migration tests are challenging due to food shelf life and potential issues like solvent spoilage and adsorption.
Accelerated test conditions are needed to predict long-term migration accurately.

Purpose of the Study:

To establish reliable long-term migration testing methods for plastic food contact materials.
To evaluate analytical techniques and address challenges in long-term migration studies.
To provide a basis for developing accelerated migration testing protocols.

Main Methods:

Preparation of model samples with various substances and resins.
Conducting long-term migration tests using four food-simulating solvents.
Analysis using liquid chromatography-tandem mass spectrometry (LC-MS/MS).
Investigating methods to prevent solvent spoilage and minimize substance adsorption.

Main Results:

LC-MS/MS proved effective for analyzing migrated substances in various solvents.
Microbial growth in water-based tests reduced migration of certain substances; sodium azide addition prevented this.
Adsorption of substances with Log Pow < 6 onto glass containers was negligible.
A robust LC-MS/MS-based protocol for long-term migration testing was established.

Conclusions:

The developed LC-MS/MS protocol facilitates reliable long-term migration testing.
Preventive measures against solvent spoilage and understanding adsorption are key for accurate testing.
This research enables the establishment of valid accelerated migration test conditions for plastic food packaging.