Migration of Contaminants from Packaging Materials into Dairy ProductsReport as inadecuate




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Typical dairy products DP include milk, cheese, butter and yoghurt. Since they are consumed widely, people are concerned about their safety. However some contaminants in the packaging materials PM might migrate into them. Many researches have been made on the migration into simulants of DP. But little work has been done on DP themselves due to their complex matrices. Herein the migration of contaminants from PM into DP was reviewed from year 2006 to 2010. The contaminants from plastics include styrene monomer, bisphenol A BPA, plasticizers, melamine MEL, photoinitiators, diphenylbutadiene DPBD, butylated hydroxytoluene BHT and metal elements. The contaminants from paper and cardboard include fluorochemicals, polychlorinated dibenzodioxins and –furans PCDDs-PCDFs. PM comprise plastics, can, primary and recycled paper and board. In some cases just the amounts of the migrants in DP were determined. While in others mathematical models based on Fick’s second law were built to predict the migration values, which fitted well with the experimental values. Diffusion coefficients at certain temperatures were predicted as well. Detection methods mainly included chromatography, chromatography-mass spectrometry and chromatography tandem mass spectrometry. Commonly adopted sample pretreatment methods were solvent extraction followed by solid-phase extraction SPE.

KEYWORDS

Migration; Contaminants; Packaging Materials; Dairy Products

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Author: Yu-Mei Wu, Chang-Ying Hu, Lei Wang, Juan Cheng, Zhi-Wei Wang, Yong Zhu

Source: http://www.scirp.org/



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