title: Effect of relative humidity on the migration of benzophenone from paperboard into the food simulant Tenax® and modelling hereof.
abstract: The aim of this study was to investigate the effect of relative humidity on the migration of benzophenone from paperboard into the food simulant Tenax®. Kinetic migration investigations were carried out with three relative humidities in the interval between 39% and >73%. All investigations were carried out at a constant temperature of 34°C. It was found that the migration of benzophenone after more than 30 days was 4.8 times higher at a relative humidity of 64%-71%, and 7.3 times higher at a relative humidity of >73%, compared with that at a relative humidity of 39%-49%. Diffusion and partition coefficients were derived from the results by using a software for modelling migration in multilayer materials. Both the diffusion coefficient and the partition coefficient, between paperboard and Tenax®, decrease with increasing relative humidity. The experimental results were correctly modelled only when the paperboard was regarded as a one-layer system as compared with a two-layer system: where the main part of the paperboard (B1) has a high diffusion rate and a thin part of the paperboard (B2) in contact with the foodstuff has a lower diffusion rate.
authors.affiliation: DTU Food, National Food Institute, Danish Technical University, Søborg, Denmark.
authors.forename: L L
authors.initials: LL
authors.lastname: Barnkob
authors.forename: J H
authors.initials: JH
authors.lastname: Petersen
mesh_terms: D001577:Benzophenones / Q000032:analysis*; D004058:Diffusion; D005506:Food Contamination / Q000032:analysis*; D018857:Food Packaging / Q000379:methods*; D006801:Humans; D006813:Humidity; D008962:Models, Theoretical; D010209:Paper; D011108:Polymers
chemical_list: D001577:Benzophenones; D011108:Polymers; C010514:tenax; C047723:benzophenone