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Migration testing with olive oil in a microwave oven

R Rijk1, N de Kruijf

  • 1TNO Nutrition and Food Research, Zeist, The Netherlands.

Food Additives and Contaminants
|November 1, 1993
PubMed
Summary

Testing microwave packaging migration into olive oil requires extended conditions beyond current regulations. Conventional heating methods are suitable for evaluating migration from microwave packaging, including susceptor materials.

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Area of Science:

  • Food Science
  • Materials Science
  • Analytical Chemistry

Background:

  • Current food packaging regulations may not adequately simulate migration under microwave heating conditions.
  • Olive oil is a common food simulant for testing migration from food contact materials.

Purpose of the Study:

  • To compare overall migration from packaging into olive oil under microwave heating versus conventional legislative conditions.
  • To evaluate the adequacy of existing food packaging regulations for microwaveable materials.
  • To propose improved migration testing methodologies for microwave packaging.

Main Methods:

  • Migration testing of packaging materials into olive oil under various heating conditions (microwave and conventional).
  • Development and use of a microwave-transparent migration cell for one-sided contact testing up to 200°C.
  • Comparison of migration results with current EC and Dutch legislative test conditions.

Main Results:

  • Extended test conditions (higher temperatures and longer times) are necessary for realistic migration testing of microwave packaging.
  • Conventional heating methods can be used to assess overall migration from microwave packaging materials.
  • A novel microwave-transparent migration cell was successfully employed for testing.

Conclusions:

  • Existing food packaging regulations need to be extended to include realistic migration testing conditions for microwave applications.
  • Overall migration from microwave packaging into olive oil can be reliably assessed using conventional heating methods.
  • A proposed rapid heating method from room temperature is suggested for high-temperature migration tests to avoid temperature drops and safety concerns.

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