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Author(s): |
Yu-Mei Wu, Packaging engineering institute, Jinan University, Zhuhai, P.R. China
Chang-Ying Hu, Department of food science and engineering, Jinan University, Guangzhou, P.R. China
Lei Wang, Packaging engineering institute, Jinan University, Zhuhai, P.R. China
Juan Cheng, Packaging engineering institute, Jinan University, Zhuhai, P.R. China
Zhi-Wei Wang, Packaging engineering institute, Jinan University, Zhuhai, P.R. China
Yong Zhu, Packaging engineering institute, Jinan University, Zhuhai, P.R. China |
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Abstract: |
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).
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