Evaluation of the types of starch for preparation of LDPE/starch blends

Detalhes bibliográficos
Autor(a) principal: Vinhas,Glória Maria
Data de Publicação: 2007
Outros Autores: Lima,Suzana Moreira de, Santos,Lívia Almeida, Lima,Maria Alice Gomes de Andrade, Almeida,Yêda Medeiros Bastos de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Archives of Biology and Technology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300001
Resumo: This study evaluated in relation the growth, and the amylolytic activity of mixed and isolated cultures of Phanerochaete chrysosporium and Talaromyces wortmanni on different types of starch. The thermal and mechanical properties in polyethylene/starch blends (proportion: 80/20 (w/w) before and after inoculation of the mixed cultures were evaluated. The regular starch Amidex 3 and the modified starch Fox5901 stood out in relation to the cellular growth and production of the amylase enzyme. In spite of the short time that the blends were exposed to the fungi, the microorganisms promoted physical and chemical changes in the structure of the blend, modifying its thermal and mechanical properties. The alteration of the degree of crystallinity and mechanical properties of the blends could be indications of the modification caused by the biodegradation process.
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spelling Evaluation of the types of starch for preparation of LDPE/starch blendsAmylolytic enzymespolyethylenestarchblendsTalaromyces wortmaniiPhanerochaete crysosporiumThis study evaluated in relation the growth, and the amylolytic activity of mixed and isolated cultures of Phanerochaete chrysosporium and Talaromyces wortmanni on different types of starch. The thermal and mechanical properties in polyethylene/starch blends (proportion: 80/20 (w/w) before and after inoculation of the mixed cultures were evaluated. The regular starch Amidex 3 and the modified starch Fox5901 stood out in relation to the cellular growth and production of the amylase enzyme. In spite of the short time that the blends were exposed to the fungi, the microorganisms promoted physical and chemical changes in the structure of the blend, modifying its thermal and mechanical properties. The alteration of the degree of crystallinity and mechanical properties of the blends could be indications of the modification caused by the biodegradation process.Instituto de Tecnologia do Paraná - Tecpar2007-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300001Brazilian Archives of Biology and Technology v.50 n.3 2007reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89132007000300001info:eu-repo/semantics/openAccessVinhas,Glória MariaLima,Suzana Moreira deSantos,Lívia AlmeidaLima,Maria Alice Gomes de AndradeAlmeida,Yêda Medeiros Bastos deeng2007-08-31T00:00:00Zoai:scielo:S1516-89132007000300001Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2007-08-31T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false
dc.title.none.fl_str_mv Evaluation of the types of starch for preparation of LDPE/starch blends
title Evaluation of the types of starch for preparation of LDPE/starch blends
spellingShingle Evaluation of the types of starch for preparation of LDPE/starch blends
Vinhas,Glória Maria
Amylolytic enzymes
polyethylene
starch
blends
Talaromyces wortmanii
Phanerochaete crysosporium
title_short Evaluation of the types of starch for preparation of LDPE/starch blends
title_full Evaluation of the types of starch for preparation of LDPE/starch blends
title_fullStr Evaluation of the types of starch for preparation of LDPE/starch blends
title_full_unstemmed Evaluation of the types of starch for preparation of LDPE/starch blends
title_sort Evaluation of the types of starch for preparation of LDPE/starch blends
author Vinhas,Glória Maria
author_facet Vinhas,Glória Maria
Lima,Suzana Moreira de
Santos,Lívia Almeida
Lima,Maria Alice Gomes de Andrade
Almeida,Yêda Medeiros Bastos de
author_role author
author2 Lima,Suzana Moreira de
Santos,Lívia Almeida
Lima,Maria Alice Gomes de Andrade
Almeida,Yêda Medeiros Bastos de
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Vinhas,Glória Maria
Lima,Suzana Moreira de
Santos,Lívia Almeida
Lima,Maria Alice Gomes de Andrade
Almeida,Yêda Medeiros Bastos de
dc.subject.por.fl_str_mv Amylolytic enzymes
polyethylene
starch
blends
Talaromyces wortmanii
Phanerochaete crysosporium
topic Amylolytic enzymes
polyethylene
starch
blends
Talaromyces wortmanii
Phanerochaete crysosporium
description This study evaluated in relation the growth, and the amylolytic activity of mixed and isolated cultures of Phanerochaete chrysosporium and Talaromyces wortmanni on different types of starch. The thermal and mechanical properties in polyethylene/starch blends (proportion: 80/20 (w/w) before and after inoculation of the mixed cultures were evaluated. The regular starch Amidex 3 and the modified starch Fox5901 stood out in relation to the cellular growth and production of the amylase enzyme. In spite of the short time that the blends were exposed to the fungi, the microorganisms promoted physical and chemical changes in the structure of the blend, modifying its thermal and mechanical properties. The alteration of the degree of crystallinity and mechanical properties of the blends could be indications of the modification caused by the biodegradation process.
publishDate 2007
dc.date.none.fl_str_mv 2007-05-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300001
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-89132007000300001
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
dc.source.none.fl_str_mv Brazilian Archives of Biology and Technology v.50 n.3 2007
reponame:Brazilian Archives of Biology and Technology
instname:Instituto de Tecnologia do Paraná (Tecpar)
instacron:TECPAR
instname_str Instituto de Tecnologia do Paraná (Tecpar)
instacron_str TECPAR
institution TECPAR
reponame_str Brazilian Archives of Biology and Technology
collection Brazilian Archives of Biology and Technology
repository.name.fl_str_mv Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)
repository.mail.fl_str_mv babt@tecpar.br||babt@tecpar.br
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