| Title: | Determination of volatile compounds and their sensory impact in a biopolymer based on polylactic acid (PLA) and polyester |
| Author(s): | Ubeda S; Aznar M; Nerin C; |
| Address: | "Department of Analytical Chemistry, EINA, University of Zaragoza, Campus Rio Ebro, Maria de Luna 3, 50018 Zaragoza, Spain. Department of Analytical Chemistry, EINA, University of Zaragoza, Campus Rio Ebro, Maria de Luna 3, 50018 Zaragoza, Spain. Electronic address: cnerin@unizar.es" |
| DOI: | 10.1016/j.foodchem.2019.05.069 |
| ISSN/ISBN: | 1873-7072 (Electronic) 0308-8146 (Linking) |
| Abstract: | "Polylactic 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" |
| Keywords: | Biopolymers/*chemistry Dimerization Food Contamination/*analysis Food Packaging Gas Chromatography-Mass Spectrometry Polyesters/*chemistry Volatile Organic Compounds/*analysis Apgc-qtof Food contact material Non-intentionally added substances (NIAS) Off-o; |
| Notes: | "MedlineUbeda, S Aznar, M Nerin, C eng England 2019/05/28 Food Chem. 2019 Oct 1; 294:171-178. doi: 10.1016/j.foodchem.2019.05.069. Epub 2019 May 9" |
