prediction of worst case migration form packaging to food using mathematical models

摘要

prediction of migration from packaging to food is often made using equations which are not always designed specifically for the problem. At least, these equations should overestimate migration, in order to be on the safe side. Integration of Fick's equation under the assumption of 'infinite packaging' provides an equation which is very practical since it requires only a few experimental data. It is shown here that, unfortunately, the use of this equation leads to a systematic under- estimation of the diffusivity, by the square of the percentage of migration at steady state.