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Κ-carrageenan/chitosan nanolayered coating for controlled release of a model bioactive compound

2012Journal article Restricted access
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dc.contributor.authorPinheiro, Ana C.
dc.contributor.authorBourbon, Ana I.
dc.contributor.authorQuintas, Mafalda A.C.
dc.contributor.authorCoimbra, Manuel A.
dc.contributor.authorVicente, António A.
dc.date.accessioned2013-01-28T12:23:13Z
dc.date.available2013-01-28T12:23:13Z
dc.date.issued2012
dc.description.abstractMultilayer nanocoatings composed of κ-carrageenan, a sulphated anionic polysaccharide, and chitosan, a cationic polysaccharide, were produced by layer-by-layer deposition. The model cationic compound Methylene Blue (MB) was incorporated in different positions of the nanolayered coating and its loading and release behavior was evaluated. UV–VIS spectroscopy and quartz crystal microbalance analysis showed that the amount of MB loaded increased with the distance from the first layer, suggesting that the MB was able to diffuse into the κ-carrageenan/chitosan nanolayered coating and not only adhered to the surface of the layer immediately below it. For most of the tested conditions, the MB release from the κ-carrageenan/chitosan nanolayered coatings was successfully described by the linear superimposition model, which allowed concluding that MB transport is due to both concentration gradient and the polymer relaxation of the nanolayers. However, depending on temperature and pH of the medium and on the position of MB incorporated on the nanolayered coatings, different mechanisms prevail. Industrial relevance: The development of novel edible coatings with improved functionality and performance for e.g. fresh and minimally processed fruits is one of the challenges of the post-harvest industry. This work contributes to the understanding of the loading and release phenomena involved in structures at the nanoscale, which is useful for the development of bioactive compounds release systems for application in food industry. Moreover, the κ-carrageenan/chitosan nanolayered coatings represent a promising platform from which the controlled release of different bioactive compounds may be explored.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationPINHEIRO, Ana C. ...[et al.] - Κ-carrageenan/chitosan nanolayered coating for controlled release of a model bioactive compound. Innovative Food Science and Emerging Technologies. ISSN 1466-8564.Vol. 16, (2012), p. 227–232por
dc.identifier.doi10.1016/j.ifset.2012.06.004
dc.identifier.eissn1878-5522
dc.identifier.issn1466-8564
dc.identifier.urihttp://hdl.handle.net/10400.14/9979
dc.identifier.wosWOS:000314193000030
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relationNANOPACKSAFER: NANO-engineered PACKaging systems for improved quality, SAFER and healthier foods
dc.subjectNanolayerspor
dc.subjectPolyelectrolyte multilayerspor
dc.subjectNanocoatingspor
dc.subjectLayer-by-layerpor
dc.subjectMethylene Bluepor
dc.subjectFick's diffusionpor
dc.titleΚ-carrageenan/chitosan nanolayered coating for controlled release of a model bioactive compoundpor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNANOPACKSAFER: NANO-engineered PACKaging systems for improved quality, SAFER and healthier foods
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F48120%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F73178%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F41715%2F2007/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/NANO%2FNTec-SQA%2F0033%2F2007/PT
oaire.citation.endPage232
oaire.citation.startPage227
oaire.citation.titleInnovative Food Science and Emerging Technologies
oaire.citation.volume16
oaire.fundingStreamSFRH
oaire.fundingStreamSFRH
oaire.fundingStreamSFRH
oaire.fundingStream5876-PPCDTI
person.familyNamePinheiro
person.familyNameCoimbra
person.familyNameVicente
person.givenNameAna C
person.givenNameManuel A.
person.givenNameAntónio
person.identifier464583
person.identifier714886
person.identifier175018
person.identifier.ciencia-id4B12-CD33-75EE
person.identifier.ciencia-id6612-90CA-0C6D
person.identifier.ciencia-idB112-A77C-62CC
person.identifier.orcid0000-0002-8223-3742
person.identifier.orcid0000-0001-8898-6342
person.identifier.orcid0000-0003-3593-8878
person.identifier.ridO-6034-2015
person.identifier.ridL-2527-2014
person.identifier.ridH-1555-2013
person.identifier.scopus-author-id23098217400
person.identifier.scopus-author-id35547014800
person.identifier.scopus-author-id7005820757
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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