Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto

Detalhes bibliográficos
Autor(a) principal: Palmeiras,Lívia P. S.
Data de Publicação: 2010
Outros Autores: Magaton,Andréia S., Colodette,Jorge L., Carvalho,Ana Márcia Macedo Ladeira
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000700025
Resumo: Pulp hemicelluloses can be extracted with NaOH and quantified by colorimetric and gravimetric techniques. However the most usual methods to measure eucalyptus pulp hemicelluloses have been through the pentosan method or through xylan analyses by GC or HPLC techniques. In this study a comparison was made between the more traditional methods and indirect method of NaOH 5% extraction followed by colorimetric analyses. It was observed that the content of NaOH 5% extract correlates very well with pulp xylan content and reasonably well with the pentosan content. It is concluded that the 5% NaOH solubility method can be used in replacement of the other two, since it is faster, simpler and less costly to carry out than the others.
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spelling Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucaliptoxylanpentosansolubilityPulp hemicelluloses can be extracted with NaOH and quantified by colorimetric and gravimetric techniques. However the most usual methods to measure eucalyptus pulp hemicelluloses have been through the pentosan method or through xylan analyses by GC or HPLC techniques. In this study a comparison was made between the more traditional methods and indirect method of NaOH 5% extraction followed by colorimetric analyses. It was observed that the content of NaOH 5% extract correlates very well with pulp xylan content and reasonably well with the pentosan content. It is concluded that the 5% NaOH solubility method can be used in replacement of the other two, since it is faster, simpler and less costly to carry out than the others.Sociedade Brasileira de Química2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000700025Química Nova v.33 n.7 2010reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422010000700025info:eu-repo/semantics/openAccessPalmeiras,Lívia P. S.Magaton,Andréia S.Colodette,Jorge L.Carvalho,Ana Márcia Macedo Ladeirapor2010-09-27T00:00:00Zoai:scielo:S0100-40422010000700025Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2010-09-27T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
title Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
spellingShingle Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
Palmeiras,Lívia P. S.
xylan
pentosan
solubility
title_short Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
title_full Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
title_fullStr Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
title_full_unstemmed Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
title_sort Análise comparativa entre vários métodos de quantificação de hemiceluloses da madeira de eucalipto
author Palmeiras,Lívia P. S.
author_facet Palmeiras,Lívia P. S.
Magaton,Andréia S.
Colodette,Jorge L.
Carvalho,Ana Márcia Macedo Ladeira
author_role author
author2 Magaton,Andréia S.
Colodette,Jorge L.
Carvalho,Ana Márcia Macedo Ladeira
author2_role author
author
author
dc.contributor.author.fl_str_mv Palmeiras,Lívia P. S.
Magaton,Andréia S.
Colodette,Jorge L.
Carvalho,Ana Márcia Macedo Ladeira
dc.subject.por.fl_str_mv xylan
pentosan
solubility
topic xylan
pentosan
solubility
description Pulp hemicelluloses can be extracted with NaOH and quantified by colorimetric and gravimetric techniques. However the most usual methods to measure eucalyptus pulp hemicelluloses have been through the pentosan method or through xylan analyses by GC or HPLC techniques. In this study a comparison was made between the more traditional methods and indirect method of NaOH 5% extraction followed by colorimetric analyses. It was observed that the content of NaOH 5% extract correlates very well with pulp xylan content and reasonably well with the pentosan content. It is concluded that the 5% NaOH solubility method can be used in replacement of the other two, since it is faster, simpler and less costly to carry out than the others.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
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=S0100-40422010000700025
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000700025
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422010000700025
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.33 n.7 2010
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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