Study of the Migration of Three Model Substances from Low Density Polyethylene into Food Simulant and Fruit Juices

Beverages

Ana Rodríguez-Bernaldo de Quirós¹  Noelia Viqueira Varela²  Raquel Sendón² 

[1] Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Pharmacy, University of Santiago de Compostela, A Coruña E-15782, Spain;

关键词: migration;    diffusion coefficients;    partition coefficients;    food simulant;    fruit juices;   

DOI  :  10.3390/beverages1030159

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.