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Morphological and mechanical characterization of films incorporating Porphyran extracted from Porphyra dioica

2022Journal article Open access
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dc.contributor.authorBaptista, Ricardo S.
dc.contributor.authorTeles, Marco
dc.contributor.authorAdão, Pedro
dc.contributor.authorAfonso, Clélia
dc.contributor.authorBernardino, Raul
dc.contributor.authorBernardino, Susana
dc.contributor.authorFerro, Alberto C.
dc.contributor.authorElias, Sara
dc.contributor.authorGuedes, Mafalda
dc.date.accessioned2023-07-27T14:12:23Z
dc.date.available2023-07-27T14:12:23Z
dc.date.issued2022
dc.descriptionThis work was supported by national funds through the Fundação para a Ciência e Tecnologia (FCT); through project UIDB/04540/2020 granted to CeFEMA, project UIDB/50022/2020 granted to IDMEC, and project LA/P/0069/2020 granted to the associate laboratory ARNET. FCT funding also includes projects UIDB/04292/2020 and UIDP/04292/2020 granted to MARE. This study received financial support from the Instituto Politécnico de Setúbal.pt_PT
dc.description.abstractThis paper studies the effects of glycerol plasticizers and/or alginate, pectin, and carboxymethylcellulose polysaccharides on the mechanical and physical properties of porphyran-based films to evaluate the films’ ability to be used as food packaging. Films were characterized in terms of their composition, microstructural and morphological features, thermal properties, water interaction, and mechanical performance. All films are homogeneous, transparent, and slightly brownish in color. The structures are amorphous and crosslinked, showing the films’ thermoset nature. Moisture content and water solubility depend on the second polysaccharide added to the porphyran, but they both increase with the addition of glycerol to the formulations; water vapor permeability is strongly affected by the second polysaccharide in the formulation. The films display stiff and brittle mechanical behavior, but ductility increases significantly in formulations containing glycerol plasticizers. The barrier and mechanical performance values of the materials produced were found to be lower than those reported for commercial food packaging. The formulations containing glycerol displayed lower water vapor permeability values, ranging from 2.98 for porphyran/carboxymethylcellulose/glycerol to 6.65 mm.g.d-1.m-2.kPa-1 for porphyran/alginate/glycerol films. All films, except porphyran/glycerol and porphyran/alginate/glycerol, had ultimate tensile strengths above 10 MPa—the threshold value that ensures that a package is ductile enough to withstand handling and forming operations. Furthermore, the porphyran/ pectin/glycerol and porphyran/carboxymethylcellulose/glycerol films displayed sufficiently high ductility values of 2.94 and 3.10%, respectively. These results indicate that the studied porphyran/pectin/glycerol and porphyran/carboxymethylcellulose/glycerol formulations have a combination of physical and mechanical properties that ensure adequate film integrity and function through the complete food packaging supply chain. The results here reported represent an opportunity to extend the scope of porphyran films to applications in the dry food packaging industry.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBaptista, R.S.; Teles, M.; Adão, P.; Afonso, C.; Bernardino, R.; Bernardino, S.; Ferro, A.C.; Elias, S.; Guedes, M. Morphological and Mechanical Characterization of Films Incorporating Porphyran Extracted from Porphyra Dioica. Coatings 2022, 12, 1720. https://doi.org/10.3390/ coatings12111720pt_PT
dc.identifier.doi10.3390/coatings12111720pt_PT
dc.identifier.issn2079-6412
dc.identifier.urihttp://hdl.handle.net/10400.8/8699
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationCenter of Physics and Engineering of Advanced Materials
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relationMarine and Environmental Sciences Centre
dc.relationMarine and Environmental Sciences Centre
dc.relation.publisherversionhttps://www.mdpi.com/2079-6412/12/11/1720pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEdible food packagingpt_PT
dc.subjectPorphyran filmspt_PT
dc.subjectGlycerol plasticizerspt_PT
dc.subjectCMCpt_PT
dc.subjectPectinpt_PT
dc.subjectAlginatept_PT
dc.subjectMechanical propertiespt_PT
dc.titleMorphological and mechanical characterization of films incorporating Porphyran extracted from Porphyra dioicapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCenter of Physics and Engineering of Advanced Materials
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04540%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50022%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04292%2F2020/PT
oaire.citation.titleCoatingspt_PT
oaire.citation.volume12pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameGomes Simões Baptista
person.familyNameTeles
person.familyNameAdão
person.familyNameAfonso
person.familyNameBernardino
person.familyNameBernardino
person.familyNameFerro
person.familyNameSantos Elias
person.familyNameGuedes
person.givenNameRicardo Miguel
person.givenNameMarco
person.givenNamePedro
person.givenNameClélia
person.givenNameRaul
person.givenNameSusana
person.givenNameAlberto Cabral
person.givenNameSara Sofia
person.givenNameMafalda
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
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project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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