Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes

Detalhes bibliográficos
Autor(a) principal: Tomoda, Bruno Thorihara [UNIFESP]
Data de Publicação: 2020
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UNIFESP
Texto Completo: https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=9725441
https://hdl.handle.net/11600/64657
Resumo: Natural polymers are biodegradable materials, coming from natural sources and have been studied in the medical-pharmaceutical area. Silk fibroin, obtained from the cocoons of Bombyx mori silkworms, is a promising and versatile protein for application in this area. However, controlled-release systems made of natural polymers, such as silk fibroin, generally exhibit a very rapid release of the compound, reaching equilibrium around 2 hours of release. Thus, the present project proposed the development of a controlled release device through the incorporation of fibroin microparticles containing model dyes in fibroin hydrogels and the study of the release kinetics of the incorporated dyes. The fibroin microparticles were obtained by the atomization method and the incorporation of the model dyes was performed by adsorption. The microparticles were analyzed for their morphology, particle size, efficiency of incorporation of the model dyes and chemical properties. The hydrogels containing the microparticles were characterized in terms of their morphology, chemical, rheological and thermal properties. The release of the compounds was analyzed by UV / Vis spectroscopy, where empirical models were adjusted to the kinetic data. The model dyes showed an efficiency of incorporation in the fibroin microparticles above 70%. The releases of the model dyes of the microparticles were performed in approximately 90 minutes, with Fickian Diffusion being the predominant mechanism in this assay. The releases of the model dyes present in the microparticles incorporated in the fibroin hydrogels persisted for around 900 minutes, with the aid of a Protease XIV for the degradation of the protein, with the Anomalous Mechanism and Case Transport-II being the predominant mechanisms in this assay. Thus, the incorporation of microparticles in fibroin hydrogels proved to be an effective method and allowed to obtain a device capable of increasing the release time of the model dyes into the medium by approximately 10 times. This study opens new possibilities for the development of controlled release systems in several applications, allowing the control of release time.
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spelling Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantesSilk FibroinBiopolymersBiomaterialsControlled ReleaseMass TransferFibroína De SedaBiopolímerosBiomateriaisLiberação ControladaTransferência De MassaNatural polymers are biodegradable materials, coming from natural sources and have been studied in the medical-pharmaceutical area. Silk fibroin, obtained from the cocoons of Bombyx mori silkworms, is a promising and versatile protein for application in this area. However, controlled-release systems made of natural polymers, such as silk fibroin, generally exhibit a very rapid release of the compound, reaching equilibrium around 2 hours of release. Thus, the present project proposed the development of a controlled release device through the incorporation of fibroin microparticles containing model dyes in fibroin hydrogels and the study of the release kinetics of the incorporated dyes. The fibroin microparticles were obtained by the atomization method and the incorporation of the model dyes was performed by adsorption. The microparticles were analyzed for their morphology, particle size, efficiency of incorporation of the model dyes and chemical properties. The hydrogels containing the microparticles were characterized in terms of their morphology, chemical, rheological and thermal properties. The release of the compounds was analyzed by UV / Vis spectroscopy, where empirical models were adjusted to the kinetic data. The model dyes showed an efficiency of incorporation in the fibroin microparticles above 70%. The releases of the model dyes of the microparticles were performed in approximately 90 minutes, with Fickian Diffusion being the predominant mechanism in this assay. The releases of the model dyes present in the microparticles incorporated in the fibroin hydrogels persisted for around 900 minutes, with the aid of a Protease XIV for the degradation of the protein, with the Anomalous Mechanism and Case Transport-II being the predominant mechanisms in this assay. Thus, the incorporation of microparticles in fibroin hydrogels proved to be an effective method and allowed to obtain a device capable of increasing the release time of the model dyes into the medium by approximately 10 times. This study opens new possibilities for the development of controlled release systems in several applications, allowing the control of release time.Polímeros naturais são materiais biodegradáveis, provenientes de fontes naturais e vêm sendo estudados na área médico-farmacêutica. A fibroína de seda, obtida dos casulos de bichos-de-seda Bombyx mori, é uma proteína promissora e versátil para aplicação nessa área. No entanto, os sistemas de liberação controlada feitos de polímeros naturais, como a fibroína de seda, geralmente apresentam uma liberação muito rápida do composto, atingindo o equilíbrio em torno de 2h de liberação. Desta forma, o presente projeto propôs o desenvolvimento de um dispositivo de liberação controlada por meio da incorporação de micropartículas de fibroína contendo corantes modelo em hidrogéis de fibroína e o estudo da cinética de liberação dos corantes incorporados. As micropartículas de fibroína foram obtidas pelo método de atomização e a incorporação dos corantes modelo foi realizada por adsorção. As micropartículas foram analisadas quanto à sua morfologia, tamanho de partícula, eficiência de incorporação dos corantes modelo e propriedades químicas. Os hidrogéis contendo as micropartículas foram caracterizados quanto à sua morfologia, propriedades químicas, reológicas e térmicas. Já a liberação dos compostos foi analisada por espectroscopia UV/Vis, onde modelos empíricos foram ajustados aos dados cinéticos. Os corantes modelo apresentaram eficiência de incorporação nas micropartículas de fibroína acima de 70%. As liberações dos corantes modelo das micropartículas foram realizadas em aproximadamente 90 minutos, sendo a Difusão Fickiana o mecanismo predominante nesse ensaio. Já as liberações dos corantes modelo presentes nas micropartículas incorporadas nos hidrogéis de fibroína persistiram em torno de 900 minutos, com o auxílio de uma Protease XIV para a degradação da proteína, sendo o Mecanismo Anômalo e Transporte de Caso-II os mecanismos predominantes nesse ensaio. Dessa forma, a incorporação de micropartículas em hidrogéis de fibroína mostrou-se um método efetivo e permitiu a obtenção de um dispositivo capaz de aumentar o tempo de liberação dos corantes modelo para o meio em aproximadamente 10 vezes. Este estudo abre novas possibilidades para o desenvolvimento de sistemas de liberação controlada em diversas aplicações, permitindo o controle do tempo de liberação.Dados abertos - Sucupira - Teses e dissertações (2020)Universidade Federal de São Paulo (UNIFESP)Moraes, Mariana Agostini de [UNIFESP]Universidade Federal de São PauloTomoda, Bruno Thorihara [UNIFESP]2022-07-21T17:42:36Z2022-07-21T17:42:36Z2020-03-04info:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/publishedVersion96 p.application/pdfhttps://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=9725441BRUNO THORIHARA TOMODA.pdfhttps://hdl.handle.net/11600/64657porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP2024-07-31T16:39:43Zoai:repositorio.unifesp.br/:11600/64657Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestbiblioteca.csp@unifesp.bropendoar:34652024-07-31T16:39:43Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false
dc.title.none.fl_str_mv Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
title Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
spellingShingle Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
Tomoda, Bruno Thorihara [UNIFESP]
Silk Fibroin
Biopolymers
Biomaterials
Controlled Release
Mass Transfer
Fibroína De Seda
Biopolímeros
Biomateriais
Liberação Controlada
Transferência De Massa
title_short Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
title_full Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
title_fullStr Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
title_full_unstemmed Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
title_sort Hidrogéis e micropartículas de fibroína de seda para liberação modificada de corantes
author Tomoda, Bruno Thorihara [UNIFESP]
author_facet Tomoda, Bruno Thorihara [UNIFESP]
author_role author
dc.contributor.none.fl_str_mv Moraes, Mariana Agostini de [UNIFESP]
Universidade Federal de São Paulo
dc.contributor.author.fl_str_mv Tomoda, Bruno Thorihara [UNIFESP]
dc.subject.por.fl_str_mv Silk Fibroin
Biopolymers
Biomaterials
Controlled Release
Mass Transfer
Fibroína De Seda
Biopolímeros
Biomateriais
Liberação Controlada
Transferência De Massa
topic Silk Fibroin
Biopolymers
Biomaterials
Controlled Release
Mass Transfer
Fibroína De Seda
Biopolímeros
Biomateriais
Liberação Controlada
Transferência De Massa
description Natural polymers are biodegradable materials, coming from natural sources and have been studied in the medical-pharmaceutical area. Silk fibroin, obtained from the cocoons of Bombyx mori silkworms, is a promising and versatile protein for application in this area. However, controlled-release systems made of natural polymers, such as silk fibroin, generally exhibit a very rapid release of the compound, reaching equilibrium around 2 hours of release. Thus, the present project proposed the development of a controlled release device through the incorporation of fibroin microparticles containing model dyes in fibroin hydrogels and the study of the release kinetics of the incorporated dyes. The fibroin microparticles were obtained by the atomization method and the incorporation of the model dyes was performed by adsorption. The microparticles were analyzed for their morphology, particle size, efficiency of incorporation of the model dyes and chemical properties. The hydrogels containing the microparticles were characterized in terms of their morphology, chemical, rheological and thermal properties. The release of the compounds was analyzed by UV / Vis spectroscopy, where empirical models were adjusted to the kinetic data. The model dyes showed an efficiency of incorporation in the fibroin microparticles above 70%. The releases of the model dyes of the microparticles were performed in approximately 90 minutes, with Fickian Diffusion being the predominant mechanism in this assay. The releases of the model dyes present in the microparticles incorporated in the fibroin hydrogels persisted for around 900 minutes, with the aid of a Protease XIV for the degradation of the protein, with the Anomalous Mechanism and Case Transport-II being the predominant mechanisms in this assay. Thus, the incorporation of microparticles in fibroin hydrogels proved to be an effective method and allowed to obtain a device capable of increasing the release time of the model dyes into the medium by approximately 10 times. This study opens new possibilities for the development of controlled release systems in several applications, allowing the control of release time.
publishDate 2020
dc.date.none.fl_str_mv 2020-03-04
2022-07-21T17:42:36Z
2022-07-21T17:42:36Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=9725441
BRUNO THORIHARA TOMODA.pdf
https://hdl.handle.net/11600/64657
url https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=9725441
https://hdl.handle.net/11600/64657
identifier_str_mv BRUNO THORIHARA TOMODA.pdf
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 96 p.
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de São Paulo (UNIFESP)
publisher.none.fl_str_mv Universidade Federal de São Paulo (UNIFESP)
dc.source.none.fl_str_mv reponame:Repositório Institucional da UNIFESP
instname:Universidade Federal de São Paulo (UNIFESP)
instacron:UNIFESP
instname_str Universidade Federal de São Paulo (UNIFESP)
instacron_str UNIFESP
institution UNIFESP
reponame_str Repositório Institucional da UNIFESP
collection Repositório Institucional da UNIFESP
repository.name.fl_str_mv Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)
repository.mail.fl_str_mv biblioteca.csp@unifesp.br
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