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Properties and controlled release of chitosan microencapsulated limonene oil

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Properties and controlled release of chitosan microencapsulated limonene oil

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dc.contributor.author Souza, Jefferson M. es_ES
dc.contributor.author Caldas, Artemísia L. es_ES
dc.contributor.author Tohidi, Shafagh D. es_ES
dc.contributor.author Molina Puerto, Javier es_ES
dc.contributor.author Souto, A.P. es_ES
dc.contributor.author Fangueiro, Raul es_ES
dc.contributor.author Zille, Andrea es_ES
dc.date.accessioned 2017-07-24T09:58:06Z
dc.date.available 2017-07-24T09:58:06Z
dc.date.issued 2014-12
dc.identifier.issn 0102-695X
dc.identifier.uri http://hdl.handle.net/10251/85648
dc.description.abstract [EN] Chitosan microcapsules containing limonene essential oil as active ingredient were prepared by coacervation using three different concentrations of NaOH (0.50, 1.00, 1.45 wt%) and fixed concentrations of chitosan and surfactant of 0.50 wt%. The produced microcapsules were fully characterized in their morphology and chemical composition, and the kinetic release analysis of the active ingredient was evaluated after deposition in a non-woven cellulose fabric. The concentration of 1.00 and 1.45 wt% clearly show the best results in terms of dimension and shape of the microcapsules as well as in the volatility results. However, at the concentration of 1 wt% a higher number of microcapsules were produced as confirmed by FTIR and EDS analysis. Free microcapsules are spherical in size with disperse diameters between 2 and 12 μm. Immobilized microcapsules showed sizes from 4 to 7 μm, a rough surface and loss of spherical shape with pore formation in the chitosan walls. SEM analysis confirms that at higher NaOH concentrations, the larger the size of the microcapsules. This technique shows that by tuning NaOH concentration it is possible to efficiently control the release rate of encapsulated active agents demonstrating great potential as insect repellent for textiles. © 2014 Sociedade Brasileira de Farmacognosia. Published by Elsevier Editora Ltda. All rights reserved es_ES
dc.description.sponsorship JMS and ALC acknowledge CAPES Foundation, the Ministry of Education of Brazil, Proc. n<SUP>o</SUP> 8976/13-9 e Proc. N<SUP>o</SUP> 1071/13-0, respectively, and the Department of Textile Engineering of the University of Minho, Portugal. J. Molina is grateful to the Conselleria d'Educacio, Formacio i Ocupacio (Generalitat Valenciana) for the Programa VALi+D Postdoctoral Fellowship. AZ (C2011-UMINHO-2C2T-01) acknowledges funding from Programa Compromisso para a Ciencia 2008, Portugal. Shafagh Dinparast Tohidi would like to thank the Portuguese Foundation of Science and Technology for providing the PhD grant SFRH/BD/94759/2013. en_EN
dc.language Inglés es_ES
dc.relation.ispartof Revista Brasileira de Farmacognosia es_ES
dc.rights Reconocimiento - No comercial (by-nc) es_ES
dc.subject Cellullose es_ES
dc.subject Chitosan es_ES
dc.subject Controlled release es_ES
dc.subject Essential oil es_ES
dc.subject Microcapsule es_ES
dc.subject Limonene es_ES
dc.title Properties and controlled release of chitosan microencapsulated limonene oil es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.bjp.2014.11.007
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Textil y Papelera - Departament d'Enginyeria Tèxtil i Paperera es_ES
dc.description.bibliographicCitation Souza, JM.; Caldas, AL.; Tohidi, SD.; Molina Puerto, J.; Souto, A.; Fangueiro, R.; Zille, A. (2014). Properties and controlled release of chitosan microencapsulated limonene oil. Revista Brasileira de Farmacognosia. 24(6):691-698. doi:10.1016/j.bjp.2014.11.007 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.bjp.2014.11.007 es_ES
dc.description.upvformatpinicio 691 es_ES
dc.description.upvformatpfin 698 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 24 es_ES
dc.description.issue 6 es_ES
dc.relation.senia 281926 es_ES


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