| Literature DB >> 33333359 |
Joao Alberto Lopes1, Emmanouil D Tsochatzis2, Lubomir Karasek1, Eddo J Hoekstra3, Hendrik Emons1.
Abstract
A HPLC-UV/FLD method was validated for the quantification of six polyethylene terephthalate (PET) and four polybutylene terephthalate (PBT) oligomers. PBT oligomers are EU regulated, while the PET ones are considered non-intentionally added substances (NIAS). LOQs were higher than 0.4 and 3.5 μg kg-1 for the simulants and in the polymer extracts, respectively. Recoveries ranged from 95 to 114 % with RSDs below 12%. Migration testing of PBT and polypropylene coffee capsules were performed with H2O and simulant C, and extracts were obtained with accelerated solvent extraction (ASE). For the latter legislative limits weren't surpassed. As no migration limits are existing for the analytes, both EFSA's toxicological threshold of concern (TTC) and sum of oligomers approaches were applied. The majority of oligomers were below the TTC (90 µg/person/day), but the limit value of 50 µg/kg food was surpassed for some capsules, which indicates a significant intake in both single and multiple consumption.Entities:
Keywords: Coffee capsules; Exposure assessment; Migration testing; Non-intentionally added substances (NIAS); Polyesters cyclic oligomers
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Year: 2020 PMID： 33333359 PMCID： PMC7896039 DOI： 10.1016/j.foodchem.2020.128739
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514