Migration of residual nonvolatile and inorganic compounds from recycled post-consumer PET and HDPE

Journal of the Brazilian Chemical Society

Camila Dutra²  Maria Teresa De A. Freire¹  Cristina Nerín¹  Karim Bentayeb¹  Angel Rodriguez-lafuente¹  Margarita Aznar¹  Felix G. R. Reyes² 

[1] ,University of Campinas School of Food Engineering Department of Food ScienceCampinas SP ,Brazil

关键词: PET;    HDPE;    post-consumer recycled food packaging;    migration studies;    UPLC-QqQ/MS;    ICP-MS;   

DOI  :  10.5935/0103-5053.20140016

来源: SciELO

【 摘 要 】

Migration of nonvolatile and inorganic residual compounds from post-consumer recycled polyethylene terephthalate (PET) submitted to cleaning processes for subsequent production of materials intended to food contact, as well as from multilayer packaging material containing post-consumer recycled high-density polyethylene (HDPE) was determined. Tests were carried out using food simulants. Nonvolatile organic contaminants from PET, determined by liquid chromatography-mass spectrometry (UPLC-QqQ/MS), showed significant migration reduction as consequence of the more complex cleaning technologies applied. However, contaminants not allowed by Brazilian and European Union regulations were identified even in deep cleaning samples. Results from multilayer HDPE showed a greater number of contaminants when compared to recycled pellets. Inorganic contaminants, determined by inductively coupled plasma mass spectrometry were below the acceptable levels. Additional studies for identification and quantitation of unknown molecules which were not possible to identify in this study by UPLC-QqQ/MS are required to ascertain the safety of using post-consumer recycled packaging material.

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