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Partition coefficients in food/packaging systems: a review
1Institut National Polytechnique de Lorraine, Laboratoire de physicochimie & génie alimentaires, ENSAIA, F-54505 Vandoeuvre les Nancy Cedex, France. Elmira.Arab-Therany@ensaia.inpl-nancy.fr
Food Additives and Contaminants
|April 1, 2005
Summary
Understanding food contamination from packaging is crucial. This study focuses on migration, a key process influencing contaminant levels, and factors affecting the partition coefficient (K) in food systems.
Area of Science:
- Food Science
- Polymer Science
- Analytical Chemistry
Background:
- Food contamination can occur through interactions with packaging materials.
- Migration of substances from packaging to food, or vice versa, impacts safety, hygiene, and economics.
- Migration involves partition and diffusion, affecting contaminant concentration over time.
Purpose of the Study:
- To investigate the phenomena of migration in food packaging systems.
- To analyze factors influencing the partition coefficient (K) in food/packaging interactions.
- To explore theoretical approaches for estimating migration parameters.
Main Methods:
- Review of existing studies on migration and partition coefficients.
- Analysis of parameters affecting the partition coefficient (K).
- Consideration of theoretical methods like quantitative structure-property relationships (QSPR).
Main Results:
- The partition coefficient (K) is a critical factor in determining contaminant levels.
- Key parameters influencing K include temperature, pH, migrant chemical structure, molecular size, fat content, and crystallinity.
- Migration phenomena are complex, involving both partition and diffusion.
Conclusions:
- Understanding migration is essential for food safety and packaging material selection.
- The partition coefficient (K) is influenced by multiple physicochemical factors.
- Theoretical models like QSPR show promise for future migration estimations.