Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals

Detalhes bibliográficos
Autor(a) principal: Silva, Jania B. A. da
Data de Publicação: 2012
Outros Autores: Pereira, Fabiano V., Druzian, Janice Izabel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/16249
Resumo: Texto completo: acesso restrito. p. 14-19
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spelling Silva, Jania B. A. daPereira, Fabiano V.Druzian, Janice IzabelSilva, Jania B. A. daPereira, Fabiano V.Druzian, Janice Izabel2014-10-02T19:21:28Z20120022-1147http://repositorio.ufba.br/ri/handle/ri/16249v. 77, n. 6Texto completo: acesso restrito. p. 14-19Bionanocomposites films of cassava starch plasticized with sucrose and inverted sugar and reinforced by cellulose nanocrystals (CNCs) were prepared by solution casting method incorporating 0.1 to 5 wt% of eucalyptus CNCs. The nanocrystals were characterized using transmission electron microscopy, whereas the bionanocomposites properties were studied using Fourier transform infrared spectroscopy, tensile measurements, water solubility, swelling behavior, and water activity (aw). The water resistance properties (solubility and swelling behavior) of the nanocomposites were enhanced with the addition of cellulose nanofillers. These results were explained in terms of the high crystallinity of the nanocrystals and the formation of a rigid network with the nanofillers, which provide physical barriers to the permeation of water within the hydrophilic cassava matrix. The addition of CNCs in the bionanocomposites decreases aw linearly, reaching values below 0.5 (for CNCs concentration higher than 4 wt%), a reference value for no microbial proliferation for food product design. The presence of small concentrations of CNCs (0.1–0.3 wt%) also effectively increased the maximum tensile strength (more than 90%) and elastic modulus (more than 400%), indicating the formation of a suitable percolation network in this concentration range. Because the cellulose nanofillers enhanced the mechanical and water stability properties of the nanocomposites, the obtained results in this work may be applied to the development of biodegradable packaging or coatings to enhance shelf life of food products.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-08-05T12:55:08Z No. of bitstreams: 1 Jania B. A. da Silva.pdf: 717318 bytes, checksum: 77ab9a7a60b85d102b08605c5ae57ddd (MD5)Approved for entry into archive by LIVIA FREITAS (livia.freitas@ufba.br) on 2014-10-02T19:21:28Z (GMT) No. of bitstreams: 1 Jania B. A. da Silva.pdf: 717318 bytes, checksum: 77ab9a7a60b85d102b08605c5ae57ddd (MD5)Made available in DSpace on 2014-10-02T19:21:28Z (GMT). No. of bitstreams: 1 Jania B. A. da Silva.pdf: 717318 bytes, checksum: 77ab9a7a60b85d102b08605c5ae57ddd (MD5) Previous issue date: 2012http://dx.doi.org/ 10.1111/j.1750-3841.2012.02710.xreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBACellulose nanowhiskers;CoatingsNanocompositesStarchSucroseCassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystalsJournal of Food Scienceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALJania B. A. da Silva.pdfJania B. A. da Silva.pdfapplication/pdf717318https://repositorio.ufba.br/bitstream/ri/16249/1/Jania%20B.%20A.%20da%20Silva.pdf77ab9a7a60b85d102b08605c5ae57dddMD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/16249/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTJania B. A. da Silva.pdf.txtJania B. 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dc.title.pt_BR.fl_str_mv Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
dc.title.alternative.pt_BR.fl_str_mv Journal of Food Science
title Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
spellingShingle Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
Silva, Jania B. A. da
Cellulose nanowhiskers;
Coatings
Nanocomposites
Starch
Sucrose
title_short Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
title_full Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
title_fullStr Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
title_full_unstemmed Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
title_sort Cassava sarch-based films plasticized with sucrose and inverted sugar and reinforced with cellulose nanocrystals
author Silva, Jania B. A. da
author_facet Silva, Jania B. A. da
Pereira, Fabiano V.
Druzian, Janice Izabel
author_role author
author2 Pereira, Fabiano V.
Druzian, Janice Izabel
author2_role author
author
dc.contributor.author.fl_str_mv Silva, Jania B. A. da
Pereira, Fabiano V.
Druzian, Janice Izabel
Silva, Jania B. A. da
Pereira, Fabiano V.
Druzian, Janice Izabel
dc.subject.por.fl_str_mv Cellulose nanowhiskers;
Coatings
Nanocomposites
Starch
Sucrose
topic Cellulose nanowhiskers;
Coatings
Nanocomposites
Starch
Sucrose
description Texto completo: acesso restrito. p. 14-19
publishDate 2012
dc.date.issued.fl_str_mv 2012
dc.date.accessioned.fl_str_mv 2014-10-02T19:21:28Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/16249
dc.identifier.issn.none.fl_str_mv 0022-1147
dc.identifier.number.pt_BR.fl_str_mv v. 77, n. 6
identifier_str_mv 0022-1147
v. 77, n. 6
url http://repositorio.ufba.br/ri/handle/ri/16249
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/ 10.1111/j.1750-3841.2012.02710.x
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