TY  - JOUR
AU  - Paiva, Robert
AU  - Wrona, Magdalena
AU  - Nerín, Cristina
AU  - Gavril, Georgiana-Luminita
AU  - Cruz, Sandra Andrea
TI  - Volatile Compounds and Off-odors Analysis of Recycled PLA for Packaging Applications: An Essential Factor for Ensuring Food Safety and Quality
JO  - Journal of polymers and the environment
VL  - 32
IS  - 12
SN  - 1064-7546
CY  - New York, NY [u.a.]
PB  - Springer Science + Business Media B.V.
M1  - FZJ-2025-02560
SP  - 6687 - 6697
PY  - 2024
AB  - Recent European guidelines support the use of recycled and biodegradable packaging for food applications. The approval of such packaging must not alter food’s taste or be harmful to health. In this work, PLA pellets were subjected to a post-consumer contamination procedure, washing process, and mechanical recycling, under common conditions of the recycling industry. HS-SPME-GC-MS and HS-SPME-GC-O-MS methods were used to detect volatile compounds and off-odor profiles. 33 different volatile compounds were identified in all samples. Intentionally added and non-intentionally added substances (IAS and NIAS) were identified, including benzaldehyde, benzyl alcohol, and dimethyl-1,4-dioxane-2,5-dione. The relationship between the formation of different NIAS and the PLA recycling process steps was determined.14 different odor compounds such as benzyl alcohol, benzaldehyde, nonanal, decanal, dodecanal, 2,3-dimethylnaphthaleneand 2,4-di-tert-butylphenol were detected and classified into 4 aroma groups (Toasted, Flower, Green and Chemical). The results obtained are essential for the food safety of recycled plastic material for food contact.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001319474900001
DO  - DOI:10.1007/s10924-024-03409-z
UR  - https://juser.fz-juelich.de/record/1042406
ER  -