Effect of relative humidity on the migration of benzophenone from paperboard into the food simulant Tenax and modelling hereof

Line Lundbæk Barnkob, Jens Højslev Petersen

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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.
Original languageEnglish
JournalFood Additives & Contaminants: Part A - Chemistry, Analysis, Control, Exposure & Risk Assessment
Volume30
Issue number2
Pages (from-to)395-409
ISSN1944-0049
DOIs
Publication statusPublished - 2013

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