Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/105373
DC FieldValueLanguage
dc.contributor.authorMelro, Elodie-
dc.contributor.authorAntunes, Filipe E.-
dc.contributor.authorSilva, G.-
dc.contributor.authorCruz, Inês-
dc.contributor.authorRamos, Philippe E-
dc.contributor.authorCarvalho, Fátima-
dc.contributor.authorAlves, Luís-
dc.date.accessioned2023-02-20T12:39:04Z-
dc.date.available2023-02-20T12:39:04Z-
dc.date.issued2020-12-22-
dc.identifier.issn2073-4360pt
dc.identifier.urihttps://hdl.handle.net/10316/105373-
dc.description.abstractFood contamination due to the presence of microorganisms is a serious problem. New food preservation systems are being studied to kill or inhibit spoilage and pathogenic microorganisms that contaminate food and reduce the shelf life of products. Chitosan films with potential application to food preservation have witnessed great developments during the last years. Chitosan is a cationic polysaccharide with the ability to form films and possess antimicrobial properties. It is water-insoluble but can be dissolved in acidic solutions. In the present work, three different acids (acetic, lactic and citric) were used in chitosan dissolution and both, the resultant solutions and formed films were characterized. It was observed that chitosan water-acetic acid systems show the highest antimicrobial activity due to the highest chitosan charge density, compared to the mixtures with lactic and citric acid. This system showed also the higher solution viscosity compared to the other systems. Chitosan-acetic acid films were also the ones presenting better mechanical properties; this can be attributed to the fact that lactic and citric acids remain in the films, changing their properties, which does not happen with acetic acid. Films produced from chitosan dissolved in water/acetic acid system are resistant, while very fragile but elastic films are formed when lactic acid is used. It was demonstrated that a good selection of the type of acid not only facilitates the dissolution of chitosan but also plays a key role in the properties of the formed solutions and films.pt
dc.language.isoengpt
dc.publisherMDPIpt
dc.relationPOCI-01-0247-FEDER- 003334 (COVER-ED)pt
dc.relationUID/QUI/00313/2020pt
dc.relationUIDB00102/2020pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectacetic acidpt
dc.subjectchitosanpt
dc.subjectcitric acidpt
dc.subjectfilmpt
dc.subjectfood preservationpt
dc.subjectlactic acidpt
dc.titleChitosan Films in Food Applications. Tuning Film Properties by Changing Acidic Dissolution Conditionspt
dc.typearticle-
degois.publication.firstPage1pt
degois.publication.issue1pt
degois.publication.titlePolymerspt
dc.peerreviewedyespt
dc.identifier.doi10.3390/polym13010001pt
degois.publication.volume13pt
dc.date.embargo2020-12-22*
uc.date.periodoEmbargo0pt
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypearticle-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.fulltextCom Texto completo-
item.languageiso639-1en-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCNC - Center for Neuroscience and Cell Biology-
crisitem.author.researchunitCIEPQPF – Chemical Process Engineering and Forest Products Research Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0003-1817-4132-
crisitem.author.orcid0000-0002-7479-8540-
crisitem.author.orcid0000-0003-4447-5107-
Appears in Collections:I&D CQC - Artigos em Revistas Internacionais
I&D CNC - Artigos em Revistas Internacionais
I&D CIEPQPF - Artigos em Revistas Internacionais
Show simple item record

SCOPUSTM   
Citations

33
checked on Apr 1, 2024

WEB OF SCIENCETM
Citations

34
checked on Apr 2, 2024

Page view(s)

58
checked on Apr 9, 2024

Download(s)

14
checked on Apr 9, 2024

Google ScholarTM

Check

Altmetric

Altmetric


This item is licensed under a Creative Commons License Creative Commons