This research investigated the overall and specific migration from two different formulations of PLA: one obtained with addition of nanoclay as a filler (PLA_Clay), and another one obtained with the addition of an antioxidant extract from waste orange peels (OPE) as an active component for food application (PLA_OPE). Overall migration was always below the current European limit of 10 mg/dm2 set for food contact materials (maximum 0.2 mg/dm2 from PLA_Clay into distilled water and 2.7 mg/dm2 from PLA_OPE into 3 % acetic acid). Specific migration of clay elements and particles from PLA_Clay was evaluated by different techniques (atomic absorption spectroscopy, SEM and SEM microanalysis). A very limited release of clay elements was measured, with the highest migration found for calcium. SEM observation showed the release of particles also of size < 1 μm. The migration testing conditions of 10 days at 40 °C showed a swelling of the PLA which was enhanced by nanoclay presence. A maximum 2.5 % of the phenolic compounds of the incorporated OPE were released in the simulant 20 % ethanol, which is compatible with the fact that the OPE had been obtained through aqueous ethanol extraction.

Marinoni, L., Montes, S., Jubete, E., Palenzuela, J., Cid, G., Aguilera, D., Spigno, G., INCORPORATION OF NANOCLAY AND ORANGE PEELS EXTRACT INTO PLA FOR FOOD APPLICATIONS: MIGRATION ASSESSMENT., <<JOURNAL OF APPLIED PACKAGING RESEARCH>>, 5; (10): N/A-N/A [http://hdl.handle.net/10807/127388]

INCORPORATION OF NANOCLAY AND ORANGE PEELS EXTRACT INTO PLA FOR FOOD APPLICATIONS: MIGRATION ASSESSMENT.

Marinoni, Laura
Primo
;
Spigno, Giorgia
Ultimo
2018

Abstract

This research investigated the overall and specific migration from two different formulations of PLA: one obtained with addition of nanoclay as a filler (PLA_Clay), and another one obtained with the addition of an antioxidant extract from waste orange peels (OPE) as an active component for food application (PLA_OPE). Overall migration was always below the current European limit of 10 mg/dm2 set for food contact materials (maximum 0.2 mg/dm2 from PLA_Clay into distilled water and 2.7 mg/dm2 from PLA_OPE into 3 % acetic acid). Specific migration of clay elements and particles from PLA_Clay was evaluated by different techniques (atomic absorption spectroscopy, SEM and SEM microanalysis). A very limited release of clay elements was measured, with the highest migration found for calcium. SEM observation showed the release of particles also of size < 1 μm. The migration testing conditions of 10 days at 40 °C showed a swelling of the PLA which was enhanced by nanoclay presence. A maximum 2.5 % of the phenolic compounds of the incorporated OPE were released in the simulant 20 % ethanol, which is compatible with the fact that the OPE had been obtained through aqueous ethanol extraction.
2018
Inglese
Marinoni, L., Montes, S., Jubete, E., Palenzuela, J., Cid, G., Aguilera, D., Spigno, G., INCORPORATION OF NANOCLAY AND ORANGE PEELS EXTRACT INTO PLA FOR FOOD APPLICATIONS: MIGRATION ASSESSMENT., <<JOURNAL OF APPLIED PACKAGING RESEARCH>>, 5; (10): N/A-N/A [http://hdl.handle.net/10807/127388]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/127388
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