Determination of key diffusion and partition parameters and their use in migration modelling
of benzophenone from low-density polyethylene (LDPE) into different foodstuffs
The mass transport process (migration) of a model substance, benzophenone (BZP), from LDPE
into selected foodstuffs at three temperatures was studied. A mathematical model based on
Fick’s Second Law of Diffusion was used to simulate the migration process and a good correlation
between experimental and predicted values was found. The acquired results contribute to a
better understanding of this phenomenon and the parameters so-derived were incorporated into
the migration module of the recently launched FACET tool (Flavourings, Additives and Food
Contact Materials Exposure Tool). The migration tests were carried out at different time–temperature
conditions, and BZP was extracted from LDPE and analysed by HPLC-DAD. With all data,
the parameters for migration modelling (diffusion and partition coefficients) were calculated.
Results showed that the diffusion coefficients (within both the polymer and the foodstuff) are
greatly affected by the temperature and food’s physical state, whereas the partition coefficient
was affected significantly only by food characteristics, particularly fat content.
MAIA Joaquim;
RODRÍGUEZ-BERNALDO DE QUIRÓS Ana;
SENDÓN Raquel;
CRUZ Jose Manuel;
SEILER Annika;
FRANZ Roland;
SIMONEAU Catherine;
CASTLE Laurence;
DRIFFIELD Malcom;
MERCEA Peter;
OLDRING Peter;
TOSA Valer;
PASEIRO-LOSADA P.;
2016-12-19
TAYLOR & FRANCIS LTD
JRC104733
1944-0049,
https://publications.jrc.ec.europa.eu/repository/handle/JRC104733,
10.1080/19440049.2016.1156165,
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