RT Journal Article T1 Study of the migration of three model substances from low density polyethylene into food simulant and fruit juices A1 Rodríguez Bernaldo de Quirós, Ana Isabel A1 Viqueira Varela, Noelia A1 Sendón García, Raquel K1 Migration K1 Diffusion coefficients K1 Partition coefficients K1 Food simulant K1 Fruit juices AB In the present work, the migration of three chemicals, benzophenone, 1,4-diphenylbutadiene and Uvitex® OB from low-density polyethylene samples into the food simulant, 50% ethanol (v/v), was studied. The key parameters of the diffusion process, the partition and diffusion coefficients, were calculated by using a mathematical model based on Fick’s Second Law. As expected, the diffusion coefficients increased with temperature and the values obtained ranged between 3.87 × 10−11 and 1.00 × 10−8 cm2/s. Furthermore, the migration in different fruit juices was also evaluated and the results indicated that benzophenone migrated to a greater extent in comparison with the other two migrants in all beverages analyzed. To quantify the migrants, a high-performance liquid chromatographic method with a diode array detector (HPLC-DAD) was used. The separation was performed on an Ace 3 C18-HL column (30 × 3 mm, 3 μm particle size) and using a gradient elution system consisting of Milli-Q water and acetonitrile. The total analysis time did not exceed 8 min PB MDPI YR 2015 FD 2015 LK http://hdl.handle.net/10347/21707 UL http://hdl.handle.net/10347/21707 LA eng NO De Quirós, A.R.-B.; Varela, N.V.; Sendón, R. Study of the Migration of Three Model Substances from Low Density Polyethylene into Food Simulant and Fruit Juices. Beverages 2015, 1, 159-168 NO The study was financially supported by the “Consellería de Cultura Educación e Ordenación Universitaria” from the Xunta de Galicia (Galicia, Spain), Ref. No. GRC 2014/012.R. Sendon is grateful to the “Parga Pondal” Program financed by “Consellería de Innovación e Industria, Xunta de Galicia” for her postdoctoral contract DS Minerva RD 24 abr 2026