Practical experience in the use of mathematical models to predict migration of additives from food-contact polymers

摘要

To reduce the amount of compliance-specific migration testing for food-contact polymers, the use of migration modelling has been evaluated. The paper describes experimental work carried out on a range of plastics and compares measured migrations against predictions obtained using mathematical models. A large number of experimental migration data have been obtained and used to evaluate a Fickian-based migration model in the prediction of specific migration of additives into olive oil. All tests were conducted using olive oil, representing the most severe case for fatty foods with test conditions including 2 h at 121 deg. C, 6 h at 70 deg. C, 2 h at 70 deg. C, 2 h at 60 deg. C and 10 days at 40 deg. C, representing short-term exposures at high temperatures and room temperature storage.