Nanocompósito de polpa de mamão e nanopartículas de quitosana para aplicação em embalagens

Made available in DSpace on 2015-02-02T12:39:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-07-01Bitstream added on 2015-02-02T13:08:20Z : No. of bitstreams: 1 S0100-40422014000600002.pdf: 740254 bytes, checksum: 2b9709cc924a83379b27316fe6124548 (MD5) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Nanocomposite materials have been incorporated into biopolymers, (e.g. hydroxypropyl methylcellulose), to improve their physical and chemical properties and enable them to be applied in food packaging, especially for their biodegradable and renewable properties. With this addition, fruit puree has been incorporated into the films to confer nutritional properties besides color and flavor. Chitosan is of interest in the packaging field since it is a biodegradable, bioabsorbable, antimicrobial agent. Furthermore, chitosan nanoparticles have been widely explored for their interesting properties and potential applications in food packaging. This work was divided into two stages: (1) chitosan nanoparticle synthesis; (2) addition of nanoparticles into HPMC and papaya puree films. Addition of chitosan nanoparticles to HPMC and papaya puree films improved film properties: mechanical, thermal and water vapor barrier. We have developed a novel nanomaterial with great potential for application in packaging to prolong the shelf life of food. Universidade Federal de São Carlos Departamento de Química EMBRAPA-CNPDIA Laboratório Nacional de Nanotecnologia aplicada ao Agronegócio Universidade Estadual Paulista Faculdade de Engenharia de Ilha Solteira Departamento de Física e Química Universidade Estadual Paulista Faculdade de Engenharia de Ilha Solteira Departamento de Física e Química