There is an increasing interest by industry in using nanosized additives in food contact materials to achieve certain technical improvements. Intrinsically linked to this development is the important question whether or not nanoparticles may migrate into foods, and, if yes, under which conditions of use in which amounts and at which sizes. Answers to this question are needed for risk assessment of consumer exposure from oral uptake of nanoparticles.  Very little experimental data exist on the diffusion of nanoparticles in food contact polymers and their migration into food(simulants). We have carried out systematic migration studies on this question by using representative nanomaterials such as titanium nitride and others incorporated in food contact polymers. Applied analytical tools to determine the migration of particles were asymmetrical flow field flow fractionation (AF4) with multi-angle light scattering detection (MALS) and element specific ICP-MS. The results of this study will be presented together with a migration model which we developed for nanoparticles.

Migration measurement and modelling of nanoparticles from food contact polymers

245th National Meeting (2013)

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