130872 20240201151019.0 doi 10.1016/j.chroma.2018.10.055 sideral 109080 ART-2018-109080 eng Aznar, Margarita Universidad de Zaragoza (orcid)0000-0002-0759-9170 Determination of non-volatile components of a biodegradable food packaging material based on polyester and polylactic acid (PLA) and its migration to food simulants 2018 Bioplastic materials are increasingly used due to its benefits for the environment preservation. Among them, food packaging materials based on polylactic acid (PLA) are among the most employed. In this work, a sample treatment methodology based on dissolution/precipitation has been optimized, selecting finally dichloromethane/ethanol as solvent/antisolvent system. The extracts obtained were analysed by UPLC-MS(QTOF), that allowed the identification of the main PLA non-volatile components. The recovery results were between 100.9 to 114.0%. The methodology was applied to the analysis of pellets and films of a PLA-polyester blend sample. A total of 37 different compounds were detected, where the four compounds with the highest intensity in pellet samples were cyclic oligomers coming from the polyester part of the blend and composed by adipic acid (AA), phthalic acid (PA) and butanediol (BD). Migration experiments to 3 food simulants were also performed: ethanol 95% (v/v), ethanol 10% (v/v) and acetic acid 3% (w/v). The results showed that in addition to those compounds previously detected in the film, new compounds coming from the reaction of PLA components with food simulants were present in migration solutions. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/T10 info:eu-repo/grantAgreement/ES/MINECO/AGL2015-67362-P info:eu-repo/grantAgreement/ES/MINECO/RYC-2012-11856 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.858 2018 CHEMISTRY, ANALYTICAL 15 / 84 = 0.179 2018 Q1 T1 BIOCHEMICAL RESEARCH METHODS 12 / 78 = 0.154 2018 Q1 T1 1.188 2018 Analytical Chemistry 2018 Q1 Organic Chemistry 2018 Q1 Medicine (miscellaneous) 2018 Q1 Biochemistry 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Ubeda, Sara Universidad de Zaragoza (orcid)0000-0002-9804-8699 Dreolin, Nicola Nerín, Cristina Universidad de Zaragoza (orcid)0000-0003-2685-5739 2009 750 Universidad de Zaragoza Dpto. Química Analítica Área Química Analítica 1583 (2018), 1-8 J. chromatogr. A Journal of Chromatography A 0021-9673 664010 http://zaguan.unizar.es/record/130872/files/texto_completo.pdf Postprint 1428973 http://zaguan.unizar.es/record/130872/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:130872 articulos driver 2024-02-01-14:36:30 ARTICLE