FOOD AND PACKAGING INTERACTIONS - TAILORING FATTY FOOD SIMULANTS

Migration of paramagnetic probes from rigid PVC within 24 h at 50 degr ees C depends on the simulant to a considerable extent. With a strongl y swelling simulant like tert.butyl acetate, the rare of diffusion is governed by the rate of penetration of the medium into the polymeric n etwork. Isooctane has a very weak interaction with rigid PVC. With a m ixture of tert.butyl acetate and isooctane it is possible to adjust th e aggressivity of the medium and to tailor an alternative simulant tha t interacts with the polymer in the same fashion as the EU's official fatty food simulants. Particular responses of polar probes underline t he importance of the interaction between simulant and additives in the choice of alternative fatty food simulants for rigid PVC.