A supramolecular proposal of lignin structure and its relation with the wood properties
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000100014 |
Resumo: | In spite of the great importance of cellulose the lignin is considered the second most abundant substance of the wood. However, little attention has been given it, mainly to wood properties. The lignin as well as other structural compounds (cellulose and hemicelluloses), has obviously an important role on the wood properties, probably due its composition and existent bonds. In general lignins have β-O-4 (Alkyl Aril Ether) as majoritary bond. This bond in a continued structure form big molecules with spiral conformation as virtual model. Based on this idea, lignins that have high/low β-O-4 content may have differentiated spiraled structures,suggesting different behaviors on the wood properties,which shows that the lignins (Guaicyl:Syringyl (GS)) of angiosperms, for example, which have higher β-O-4 content would present higher spiral conformation than gymnosperms lignins(HG). On the other hand HG lignins have chance of being more anchored on the matrix compound than GS lignins. In this context, the β-O-4 bonds of lignins possibly affect the wood properties, therefore, it is considered relevant for wood technology science discussion. |
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Anais da Academia Brasileira de Ciências (Online) |
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A supramolecular proposal of lignin structure and its relation with the wood propertiesligninmolecular conformationwood propertiesstructureIn spite of the great importance of cellulose the lignin is considered the second most abundant substance of the wood. However, little attention has been given it, mainly to wood properties. The lignin as well as other structural compounds (cellulose and hemicelluloses), has obviously an important role on the wood properties, probably due its composition and existent bonds. In general lignins have β-O-4 (Alkyl Aril Ether) as majoritary bond. This bond in a continued structure form big molecules with spiral conformation as virtual model. Based on this idea, lignins that have high/low β-O-4 content may have differentiated spiraled structures,suggesting different behaviors on the wood properties,which shows that the lignins (Guaicyl:Syringyl (GS)) of angiosperms, for example, which have higher β-O-4 content would present higher spiral conformation than gymnosperms lignins(HG). On the other hand HG lignins have chance of being more anchored on the matrix compound than GS lignins. In this context, the β-O-4 bonds of lignins possibly affect the wood properties, therefore, it is considered relevant for wood technology science discussion.Academia Brasileira de Ciências2009-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000100014Anais da Academia Brasileira de Ciências v.81 n.1 2009reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/S0001-37652009000100014info:eu-repo/semantics/openAccessAbreu,Heber S.Latorraca,João V.F.Pereira,Regina P.W.Monteiro,Maria Beatriz O.Abreu,Fábio A.Amparado,Kelysson F.eng2009-02-20T00:00:00Zoai:scielo:S0001-37652009000100014Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2009-02-20T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
A supramolecular proposal of lignin structure and its relation with the wood properties |
title |
A supramolecular proposal of lignin structure and its relation with the wood properties |
spellingShingle |
A supramolecular proposal of lignin structure and its relation with the wood properties Abreu,Heber S. lignin molecular conformation wood properties structure |
title_short |
A supramolecular proposal of lignin structure and its relation with the wood properties |
title_full |
A supramolecular proposal of lignin structure and its relation with the wood properties |
title_fullStr |
A supramolecular proposal of lignin structure and its relation with the wood properties |
title_full_unstemmed |
A supramolecular proposal of lignin structure and its relation with the wood properties |
title_sort |
A supramolecular proposal of lignin structure and its relation with the wood properties |
author |
Abreu,Heber S. |
author_facet |
Abreu,Heber S. Latorraca,João V.F. Pereira,Regina P.W. Monteiro,Maria Beatriz O. Abreu,Fábio A. Amparado,Kelysson F. |
author_role |
author |
author2 |
Latorraca,João V.F. Pereira,Regina P.W. Monteiro,Maria Beatriz O. Abreu,Fábio A. Amparado,Kelysson F. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Abreu,Heber S. Latorraca,João V.F. Pereira,Regina P.W. Monteiro,Maria Beatriz O. Abreu,Fábio A. Amparado,Kelysson F. |
dc.subject.por.fl_str_mv |
lignin molecular conformation wood properties structure |
topic |
lignin molecular conformation wood properties structure |
description |
In spite of the great importance of cellulose the lignin is considered the second most abundant substance of the wood. However, little attention has been given it, mainly to wood properties. The lignin as well as other structural compounds (cellulose and hemicelluloses), has obviously an important role on the wood properties, probably due its composition and existent bonds. In general lignins have β-O-4 (Alkyl Aril Ether) as majoritary bond. This bond in a continued structure form big molecules with spiral conformation as virtual model. Based on this idea, lignins that have high/low β-O-4 content may have differentiated spiraled structures,suggesting different behaviors on the wood properties,which shows that the lignins (Guaicyl:Syringyl (GS)) of angiosperms, for example, which have higher β-O-4 content would present higher spiral conformation than gymnosperms lignins(HG). On the other hand HG lignins have chance of being more anchored on the matrix compound than GS lignins. In this context, the β-O-4 bonds of lignins possibly affect the wood properties, therefore, it is considered relevant for wood technology science discussion. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-03-01 |
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=S0001-37652009000100014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000100014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0001-37652009000100014 |
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 |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.81 n.1 2009 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
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1754302857241165824 |