Novel Egg White Protein–Chitin Nanocrystal Biocomposite Films with Enhanced Functional Properties

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dc.contributor.authorBaquero Aznar, Víctor
dc.contributor.authorCalvo, Víctor
dc.contributor.authorGonzález Domínguez, José Miguel
dc.contributor.authorMaser, Wolfgang K.
dc.contributor.authorBenito, Ana M.
dc.contributor.authorSalvador, María Luisa
dc.contributor.authorGonzález Buesa, Jaime
dc.contributor.orcidBaquero Aznar, Víctor [0000-0002-4066-7294]
dc.contributor.orcidGonzález Buesa, Jaime [0000-0003-4147-3616]
dc.date.accessioned2025-12-24T08:00:03Z
dc.date.available2025-12-24T08:00:03Z
dc.date.issued2025-09-25
dc.date.updated2025-09-25T12:22:58Z
dc.description.abstractThis study aims to develop egg white protein (EWP) biocomposite films reinforced with chitin nanocrystals (ChNCs, 1–5 wt.%) by compression molding to overcome the mechanical and barrier limitations of protein-based films for sustainable packaging. ChNC incorporation may modulate film microstructure, crystallinity, and thermal stability, thereby enhancing functional performance. Films were prepared by adding ChNCs either as aqueous suspensions or lyophilized powder, and their structural, thermal, mechanical, optical, and barrier properties were systematically evaluated. Scanning electron microscopy confirmed a more homogeneous dispersion of ChNCs when added as suspensions, while powder addition promoted partial aggregation. X-ray diffraction revealed increased crystallinity with ChNC reinforcement. Mechanical tests showed that films with 2 wt.% ChNCs in suspension exhibited the highest tensile strength, whereas those with 5 wt.% in powder form became stiffer but less extensible. Oxygen permeability was not significantly affected, while water vapor permeability decreased by up to 14.5% at 2 wt.% ChNCs incorporated as powder. Transparency and color remained largely unchanged by ChNC addition, except for a slight increase in yellowness. Overall, these findings demonstrate that the incorporation method and concentration of ChNCs play a crucial role in tailoring the physicochemical performance of EWP films. The results provide new insights into the design of EWP-based nanocomposites and support their potential as bio-derived materials for advanced food packaging applications.
dc.description.peerreviewedSi
dc.description.sponsorshipEste trabajo ha sido financiado por el Ministerio de Ciencia e Innovación de España (proyectos PID2022–142850OR-I00 y PID2019–108080RR-100, y beca predoctoral PRE2020–094379 a V. Baquero-Aznar), y por el Departamento de Industria e Innovación (Gobierno de Aragón) a través del proyecto PROY-T41-24 y la beca para grupos de investigación T07–23R y T03-23R.
dc.identifier.citationBaquero-Aznar, V., Calvo, V., González-Domínguez, J. M., Maser, W. K., Benito, A. M., Salvador, M. L., González-Buesa, J., Baquero-Aznar, V., Calvo, V., González-Domínguez, J. M., Maser, W. K., Benito, A. M., Salvador, M. L., & González-Buesa, J. (2025). Novel Egg White Protein–Chitin Nanocrystal Biocomposite Films with Enhanced Functional Properties. Polymers, 17(18). https://doi.org/10.3390/polym17182538
dc.identifier.issn2073-4360
dc.identifier.urihttps://doi.org/10.3390/polym17182538
dc.identifier.urihttps://hdl.handle.net/10532/8077
dc.language.isoen
dc.publisherMDPi
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-142850OR-I00/ES/ENVASE COMESTIBLE PARA TRUFA FRESCA/EDITRUFF
dc.relationinfo:eu-repo/grantAgreement/Agreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-108080RR-I00/ES/Mejora de envases basados en proteínas para la conservación de frutas y hortalizas en cuarta gama/PROpack
dc.relation.citaSi
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spainen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.agrovocQuitina
dc.subject.agrovocClara de huevo
dc.subject.agrovocProteínas de origen animal
dc.subject.agrovocPelícula
dc.subject.agrovocPolímeros biodegradables
dc.subject.agrovocEnvasado
dc.subject.agrovocPermeabilidad
dc.subject.sdgIndustria, innovación e infraestructura
dc.subject.sdgProducción y consumo responsables
dc.titleNovel Egg White Protein–Chitin Nanocrystal Biocomposite Films with Enhanced Functional Properties
dc.typetexto
dc.typerevista
dc.typeartículo
dc.typeartículo original
dc.type.hasVersionversión publicada

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