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Antimicrobial properties and release of cinnamaldehyde in bilayer films based on polylactic acid (PLA) and starch

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Antimicrobial properties and release of cinnamaldehyde in bilayer films based on polylactic acid (PLA) and starch

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dc.contributor.author Muller, Justine es_ES
dc.contributor.author Casado Quesada, Alba es_ES
dc.contributor.author González Martínez, María Consuelo es_ES
dc.contributor.author Chiralt, A. es_ES
dc.date.accessioned 2018-03-18T05:18:17Z
dc.date.available 2018-03-18T05:18:17Z
dc.date.issued 2017 es_ES
dc.identifier.issn 0014-3057 es_ES
dc.identifier.uri http://hdl.handle.net/10251/99492
dc.description.abstract [EN] Cinnamaldehyde (CIN) loaded amorphous PLA films were obtained by casting, using ethyl acetate as solvent. Likewise, bilayer films were obtained by thermocompression of the PLA active layer and compression moulded cassava starch (S) films or semi crystalline PLA films. Starch-PLA laminated materials were considered to improve the barrier capacity (high oxygen barrier through the starch layer and high water vapour capacity through the polyester layer), while CIN incorporation confers antimicrobial activity on the films. The PLA bilayers were obtained for comparison purposes. The antimicrobial activity of the CIN loaded PLA films and S bilayer films was proved against Escherichia coli and Listeria Innocua through in vitro tests, which indicates that the active amount released into the growth medium exceeded the minimum inhibitory concentration (MIC) of both bacteria. The release kinetics of the active compound in different food simulants demonstrated that a part of CIN was tightly bonded to the PLA matrix, whereas the free compound diffused more easily through the starch layer, making S bilayers more active against the bacteria when the starch layer was in direct contact with the culture medium. CIN entrapped in PLA bilayers did not exhibited any antibacterial effect due to its release inhibition, associated to its bonding within the PLA matrix and the lower degree of relaxation in the semi crystalline PLA layer in contact with the food simulants. es_ES
dc.description.sponsorship The authors thank the Ministerio de Economia y Competitividad (Spain) for the financial support provided through Project AGL2013-42989-R and AGL2016-76699-R. Author Justine Muller thanks the Generalitat Valenciana for the Santiago Grisolia Grant (GRISOLIA/2014/003). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/AGL2013-42989-R-AR es_ES
dc.relation AEI/AGL2016-76699-R es_ES
dc.relation.ispartof European Polymer Journal es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject PLA es_ES
dc.subject Cassava starch es_ES
dc.subject Cinnamaldehyde es_ES
dc.subject Compression moulding es_ES
dc.subject Antimicrobial activity es_ES
dc.subject Release kinetics es_ES
dc.subject.classification TECNOLOGIA DE ALIMENTOS es_ES
dc.title Antimicrobial properties and release of cinnamaldehyde in bilayer films based on polylactic acid (PLA) and starch es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.eurpolymj.2017.09.009 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Tecnología de Alimentos - Departament de Tecnologia d'Aliments es_ES
dc.description.bibliographicCitation Muller, J.; Casado Quesada, A.; González Martínez, MC.; Chiralt, A. (2017). Antimicrobial properties and release of cinnamaldehyde in bilayer films based on polylactic acid (PLA) and starch. European Polymer Journal. 96:316-325. doi:10.1016/j.eurpolymj.2017.09.009 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.eurpolymj.2017.09.009 es_ES
dc.description.upvformatpinicio 316 es_ES
dc.description.upvformatpfin 325 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 96 es_ES
dc.relation.pasarela 352162 es_ES
dc.contributor.funder Agencia Estatal de Investigación (AEI) es_ES
dc.contributor.funder Ministerio de Economía, Industria y Competitividad (MINECO) es_ES


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