Determination of volatile compounds and their sensory impact in a biopolymer based on polylactic acid (PLA) and polyester

Ubeda, S. (Universidad de Zaragoza) ; Aznar, M. (Universidad de Zaragoza) ; Nerín, C. (Universidad de Zaragoza)

Resumen: 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.

Idioma: Inglés

DOI: 10.1016/j.foodchem.2019.05.069

Año: 2019

Publicado en: Food Chemistry 294 (2019), 171-178
ISSN: 0308-8146

Factor impacto JCR: 6.306 (2019)

Categ. JCR: CHEMISTRY, APPLIED rank: 5 / 70 = 0.071 (2019) - Q1 - T1
Categ. JCR: NUTRITION & DIETETICS rank: 10 / 89 = 0.112 (2019) - Q1 - T1
Categ. JCR: FOOD SCIENCE & TECHNOLOGY rank: 6 / 138 = 0.043 (2019) - Q1 - T1

Factor impacto SCIMAGO: 1.775 - Analytical Chemistry (Q1) - Medicine (miscellaneous) (Q1) - Food Science (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T10
Financiación: info:eu-repo/grantAgreement/ES/MINECO/AGL2015-67362-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-077159
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RYC-2012-11856

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)