Factors affecting migration kinetics from a generic epoxy-phenolic food can coating system

Janine Wagner; Laurence Castle; Peter K T Oldring; Thomas Moschakis; Bronislaw L Wedzicha

doi:10.1016/j.foodres.2017.12.059

Factors affecting migration kinetics from a generic epoxy-phenolic food can coating system

Food Res Int. 2018 Apr:106:183-192. doi: 10.1016/j.foodres.2017.12.059. Epub 2017 Dec 26.

Authors

Janine Wagner¹, Laurence Castle², Peter K T Oldring³, Thomas Moschakis⁴, Bronislaw L Wedzicha⁵

Affiliations

¹ School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK. Electronic address: jwagner.m@gmail.com.
² The Food and Environment Research Agency, Department for Environment, Food and Rural Affairs, York YO41 1LZ, UK.
³ The Valspar Corporation, Witney, Oxfordshire OX28 4XR, UK.
⁴ Department of Food Science and Technology, School of Agriculture, P.O. Box 235, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
⁵ School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.

PMID: 29579917
DOI: 10.1016/j.foodres.2017.12.059

Abstract

This study investigated how the properties of a polymeric can coating film, such as thickness and crosslink density as well as the type of migrant, influence the migration kinetics of model migrants in an attempt to better understand, model and control the migration process. Four model migrants were used BADGE (bisphenol A diglycidyl ether), BADGE·H₂O, cyclo-diBADGE and Uvitex OB, that differ in size and polarity. Fatty and aqueous food simulants were used at high temperatures (70-130°C). The apparent diffusion coefficients were found to decrease with increasing crosslink density, while they increased with increasing film thickness. The apparent activation energy of BADGE and BADGE-related compounds was calculated from the diffusion data and were high, in the range of 250-264kJmol^-1. The polarity of the simulant and the polarity of the migrant were found to influence migration. The results can be used to improve existing migration models, and thereby help to reduce migration from packaging into food by using safety-by-design approaches in new product development.

Keywords: Activation energy; Can coating; Curing time; Diffusion coefficient; Film thickness; Model migrants; Simulant temperature.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Benzhydryl Compounds / chemistry
Carcinogens / chemistry
Cross-Linking Reagents
Diffusion
Epoxy Compounds / chemistry*
Food Contamination / analysis*
Food Packaging / instrumentation*
Hot Temperature
Kinetics
Molecular Structure
Phenols / chemistry*
Thermodynamics

Substances

Benzhydryl Compounds
Carcinogens
Cross-Linking Reagents
Epoxy Compounds
Phenols
2,2-bis(4-glycidyloxyphenyl)propane