doi:10.1016/j.foodchem.2019.05.069engUbeda, S.Aznar, M.Nerín, C.Determination of volatile compounds and their sensory impact in a biopolymer based on polylactic acid (PLA) and polyesterART-2019-112293Polylactic acid (PLA) is one of the most commonly used biopolymers for manufacturing food packaging; its control is very important to ensure consumers’ health. In this work, a blend of PLA and polyester was studied and its volatile composition in the polymer and in the migration to food simulants was determined by gas chromatography–mass spectrometry (GC–MS) and atmospheric pressure gas chromatography–quadrupole-time of flight mass spectrometry (APGC–QTOF). The results showed that both techniques provided complementary information, to give complete information on the biopolymer''s composition. Some compounds such as lactide or cyclopentanone were detected only by GC–MS while others, such as the cyclic dimer [AA-BD] 2 (AA:adipic acid, BD:butanediol), were detected only by APGC–MS. In migration, lactide, AA-BD and [AA-BD] 2 were identified in ethanol 95%. A GC–olfactometry study was also carried out. Some compounds showed sensory impact on the polymer odor but not in migration.2019http://zaguan.unizar.es/record/13087110.1016/j.foodchem.2019.05.069http://zaguan.unizar.es/record/130871oai:zaguan.unizar.es:130871info:eu-repo/grantAgreement/ES/DGA/T10info:eu-repo/grantAgreement/ES/MINECO/AGL2015-67362-Pinfo:eu-repo/grantAgreement/ES/MINECO/BES-2016-077159info:eu-repo/grantAgreement/ES/MINECO/RYC-2012-11856Food Chemistry 294 (2019), 171-178by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess