Poly(alpha-dodecyl  gamma-glutamate) (PAAG-12) and polylactic acid films charged with alpha-tocopherol and their antioxidant capacity in food models

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/169493

dc.contributor	Universitat Politècnica de Catalunya. Doctorat en Enginyeria de Processos Químics
dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor	Universitat Politècnica de Catalunya. POL - Polímers Industrials Avançats i Biopolímers Tecnològics
dc.contributor	Universitat Politècnica de Catalunya. CRESCA - Centre de Recerca en Seguretat i Control Alimentari
dc.contributor.author	Villasante, Juliana
dc.contributor.author	Codina, Eva
dc.contributor.author	Hidalgo López, Gádor Indra
dc.contributor.author	Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon
dc.contributor.author	Muñoz Guerra, Sebastián
dc.contributor.author	Almajano Pablos, María Pilar
dc.date	2019-08-06
dc.identifier.citation	Villasante, J. [et al.]. Poly(alpha-dodecyl gamma-glutamate) (PAAG-12) and polylactic acid films charged with alpha-tocopherol and their antioxidant capacity in food models. "Antioxidants", 6 Agost 2019, vol. 8, núm. 8, p. 284:1-284:11.
dc.identifier.citation	2076-3921
dc.identifier.citation	10.3390/antiox8080284
dc.identifier.uri	http://hdl.handle.net/2117/169493
dc.language.iso	eng
dc.relation	https://www.mdpi.com/2076-3921/8/8/284
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria química
dc.subject	Antioxidants
dc.subject	Polymers
dc.subject	Active film
dc.subject	Food packaging
dc.subject	Characterization
dc.subject	NMR analyses
dc.subject	Controlled release
dc.subject	Antioxidant
dc.subject	Emulsion
dc.subject	Food simulant
dc.subject	Polymer
dc.subject	Antioxidants
dc.subject	Polímers
dc.title	Poly(alpha-dodecyl gamma-glutamate) (PAAG-12) and polylactic acid films charged with alpha-tocopherol and their antioxidant capacity in food models
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Poly (alpha-dodecyl-glutamate) (PAAG-12) was successfully synthesized from poly(gamma-glutamic acid) (PGGA) according to Nuclear Magnetic Resonance (NMR) analyses. PAAG-12 filmswere prepared and enriched with 5% alpha-tocopherol, with the aim of using them as novel antioxidant active packaging for food applications. Thermogravimetric Analysis (TGA) characterization determined that alpha-tocopherol improved thermal stability of films, which is beneficial for industrial processing. Polylactic Acid (PLA) films prepared with the same amount of alpha-tocopherol were used to set a comparative frame and both types of films were applied to two different food models to assess their protective action against oxidation. Water, 50% ethanol (EtOH) and 95% EtOH were used as food simulants and HPLC analyses were performed to determine difusion and partition coeficients in PLA and the novel polymer, the latter exhibiting slower release rates. Primary oxidation was measured with peroxide value, which revealed that PAAG-12 films with alpha-tocopherol protected oil-in-water (O/W) emulsions up to 29 days, complying with the Codex Alimentarius.
dc.description.abstract	Peer Reviewed

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