Besides the data provided in the EFSA opinion, we are not
aware of any other study that focused on the migration of TiN
nanoparticles. In general, only little data about the migration
of NPs from FCMs to food is published so far. Until now there is
no standard or generally recognized methodology available for
the sufficiently sensitive and unambiguous detection of NPs
migrating out of FCMs. An overview and a more detailed
discussion on this issue can be found in our recently published
paper on a study dealing with the potential migration of nano
silver particles incorporated in polyolefins (Bott, Sto¨ rmer, &
Franz, 2014).