Biodegradable Poly(ε-Caprolactone) Active Films Loaded with MSU-X Mesoporous Silica for the Release of α-Tocopherol

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Title: Biodegradable Poly(ε-Caprolactone) Active Films Loaded with MSU-X Mesoporous Silica for the Release of α-Tocopherol
Authors: Mellinas-Ciller, Ana-Cristina | Ramos, Marina | Grau-Atienza, Aida | Jordá Sánchez, Anna | Burgos, Nuria | Jiménez, Alfonso | Serrano, Elena | Garrigós, María del Carmen
Research Group/s: Análisis de Polímeros y Nanomateriales | Laboratorio de Nanotecnología Molecular (NANOMOL)
Center, Department or Service: Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología | Universidad de Alicante. Departamento de Química Inorgánica
Keywords: Mesoporous silica | α-tocopherol | Biodegradable active films | Poly(ε-caprolactone) | Controlled release
Knowledge Area: Química Analítica | Química Inorgánica
Issue Date: 6-Jan-2020
Publisher: MDPI
Citation: Mellinas C, Ramos M, Grau-Atienza A, Jordà A, Burgos N, Jiménez A, Serrano E, Garrigós MC. Biodegradable Poly(ε-Caprolactone) Active Films Loaded with MSU-X Mesoporous Silica for the Release of α-Tocopherol. Polymers. 2020; 12(1):137. doi:10.3390/polym12010137
Abstract: In this study, new active PCL (poly(ε-caprolactone)) films containing α-tocopherol (TOC) and MSU-X mesoporous silica were prepared by melt blending. The studied additives were directly incorporated into the polymer matrix or by impregnating TOC into MSU-X silica (PCL-IMP). Thermal, optical, oxygen and water barrier properties as well as oxidation onset parameters, were studied. Films containing MSU-X and/or TOC showed a significant increase in oxidative onset temperature (OOT) and oxidative induction time (OIT), improving thermal stability against materials oxidation by the addition of mesoporous silica and TOC into the polymer matrix. In addition, the effect of MSU-X addition on the migration behaviour of α-tocopherol from active films was investigated at 40 °C using 50% (v/v) ethanol as fatty food simulant, showing PCL-IMP films the lower release content and diffusion coefficient (3.5 × 10−15 cm2 s−1). Moreover, radical scavenging (DPPH and ABTS) and antibacterial activity against E. coli and S. aureus were favoured by the release of α-tocopherol in the developed films. The obtained results have demonstrated the potential of the new PCL-based active formulations for TOC controlled release in antioxidant and antibacterial food packaging applications.
Sponsor: This work was supported by the Spanish MICINN and AEI/FEDER (Project CTQ2015-74494-JIN), the Spanish Ministry of Science, Innovation and Universities (ProjectMAT2017-84909-C2-1-R) and the GV (ref. GV/2014/093). E.S. also thanks the University of Alicante through the projects refs. UATALENTO16-0 and GRE-1239.
ISSN: 2073-4360
DOI: 10.3390/polym12010137
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Peer Review: si
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Appears in Collections:INV - NANOBIOPOL - Artículos de Revistas
INV - NANOMOL - Artículos de Revistas

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