Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics

Detalhes bibliográficos
Autor(a) principal: Colares, Carla Jovania Gomes
Data de Publicação: 2015
Outros Autores: Pastore, Tereza Cristina Monteiro, Coradin, Vera Teresinha Rauber, Camargos, José Arlete Alves, Moreira, Alessandro Cézar de Oliveira, Rubim, Joel Camargo, Braga, Jez Willian Batista
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UnB
Texto Completo: http://repositorio.unb.br/handle/10482/29691
http://dx.doi.org/10.5935/0103-5053.20150096
Resumo: The determinations of cellulose and lignin are important in wood analysis from both perspectives: chemistry composition, commercial and industrial application of woods. In this context, Raman image spectroscopy was applied in the determination of cellulose and lignin distribution in wood surfaces of Swietenia macrophylla King (Mahogany) and Eucalyptus hybrid (E. urophylla × E. camaldulensis). The relative concentration maps were obtained by applying a multivariate curve resolution procedure. The estimated Raman spectra for cellulose and lignin agrees with the ones available in the literature. The cellulose concentration maps showed similar variations for both studied species with an average value of nearly 85% as obtained by the reference method. The lignin concentration maps were somewhat different. The Eucalyptus hybrid presents a broader distribution (20 to 45%) while for Mahogany it is nearly constant, around 25%, with localized regions presenting contents of 45 to 65% of lignin. The reference method showed that the mean lignin content of both species is 27%. The cellulose and lignin concentration maps agree with the biological functions of the anatomic structures observed in the images.
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spelling Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometricsEspectroscopiaCeluloseLigninaMadeiraThe determinations of cellulose and lignin are important in wood analysis from both perspectives: chemistry composition, commercial and industrial application of woods. In this context, Raman image spectroscopy was applied in the determination of cellulose and lignin distribution in wood surfaces of Swietenia macrophylla King (Mahogany) and Eucalyptus hybrid (E. urophylla × E. camaldulensis). The relative concentration maps were obtained by applying a multivariate curve resolution procedure. The estimated Raman spectra for cellulose and lignin agrees with the ones available in the literature. The cellulose concentration maps showed similar variations for both studied species with an average value of nearly 85% as obtained by the reference method. The lignin concentration maps were somewhat different. The Eucalyptus hybrid presents a broader distribution (20 to 45%) while for Mahogany it is nearly constant, around 25%, with localized regions presenting contents of 45 to 65% of lignin. The reference method showed that the mean lignin content of both species is 27%. The cellulose and lignin concentration maps agree with the biological functions of the anatomic structures observed in the images.Instituto de Química (IQ)Sociedade Brasileira de Química2017-12-07T05:12:54Z2017-12-07T05:12:54Z2015-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCOLARES, Carla Jovania Gomes et al. Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics. Journal of the Brazilian Chemical Society, São Paulo, v. 26, n. 6, p. 1297-1305, jun. 2015. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000601297&lng=en&nrm=iso>. Acesso em: 16 abr. 2018. doi: http://dx.doi.org/10.5935/0103-5053.20150096.http://repositorio.unb.br/handle/10482/29691http://dx.doi.org/10.5935/0103-5053.20150096Journal of the Brazilian Chemical Society - This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited (CC BY NC 4.0). Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000601297&lng=en&nrm=iso. Acesso em: 16 abr. 2018.info:eu-repo/semantics/openAccessColares, Carla Jovania GomesPastore, Tereza Cristina MonteiroCoradin, Vera Teresinha RauberCamargos, José Arlete AlvesMoreira, Alessandro Cézar de OliveiraRubim, Joel CamargoBraga, Jez Willian Batistaengreponame:Repositório Institucional da UnBinstname:Universidade de Brasília (UnB)instacron:UNB2023-09-23T12:04:21Zoai:repositorio.unb.br:10482/29691Repositório InstitucionalPUBhttps://repositorio.unb.br/oai/requestrepositorio@unb.bropendoar:2023-09-23T12:04:21Repositório Institucional da UnB - Universidade de Brasília (UnB)false
dc.title.none.fl_str_mv Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
title Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
spellingShingle Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
Colares, Carla Jovania Gomes
Espectroscopia
Celulose
Lignina
Madeira
title_short Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
title_full Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
title_fullStr Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
title_full_unstemmed Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
title_sort Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics
author Colares, Carla Jovania Gomes
author_facet Colares, Carla Jovania Gomes
Pastore, Tereza Cristina Monteiro
Coradin, Vera Teresinha Rauber
Camargos, José Arlete Alves
Moreira, Alessandro Cézar de Oliveira
Rubim, Joel Camargo
Braga, Jez Willian Batista
author_role author
author2 Pastore, Tereza Cristina Monteiro
Coradin, Vera Teresinha Rauber
Camargos, José Arlete Alves
Moreira, Alessandro Cézar de Oliveira
Rubim, Joel Camargo
Braga, Jez Willian Batista
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Colares, Carla Jovania Gomes
Pastore, Tereza Cristina Monteiro
Coradin, Vera Teresinha Rauber
Camargos, José Arlete Alves
Moreira, Alessandro Cézar de Oliveira
Rubim, Joel Camargo
Braga, Jez Willian Batista
dc.subject.por.fl_str_mv Espectroscopia
Celulose
Lignina
Madeira
topic Espectroscopia
Celulose
Lignina
Madeira
description The determinations of cellulose and lignin are important in wood analysis from both perspectives: chemistry composition, commercial and industrial application of woods. In this context, Raman image spectroscopy was applied in the determination of cellulose and lignin distribution in wood surfaces of Swietenia macrophylla King (Mahogany) and Eucalyptus hybrid (E. urophylla × E. camaldulensis). The relative concentration maps were obtained by applying a multivariate curve resolution procedure. The estimated Raman spectra for cellulose and lignin agrees with the ones available in the literature. The cellulose concentration maps showed similar variations for both studied species with an average value of nearly 85% as obtained by the reference method. The lignin concentration maps were somewhat different. The Eucalyptus hybrid presents a broader distribution (20 to 45%) while for Mahogany it is nearly constant, around 25%, with localized regions presenting contents of 45 to 65% of lignin. The reference method showed that the mean lignin content of both species is 27%. The cellulose and lignin concentration maps agree with the biological functions of the anatomic structures observed in the images.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
2017-12-07T05:12:54Z
2017-12-07T05:12:54Z
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 COLARES, Carla Jovania Gomes et al. Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics. Journal of the Brazilian Chemical Society, São Paulo, v. 26, n. 6, p. 1297-1305, jun. 2015. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000601297&lng=en&nrm=iso>. Acesso em: 16 abr. 2018. doi: http://dx.doi.org/10.5935/0103-5053.20150096.
http://repositorio.unb.br/handle/10482/29691
http://dx.doi.org/10.5935/0103-5053.20150096
identifier_str_mv COLARES, Carla Jovania Gomes et al. Exploratory analysis of the distribution of lignin and cellulose in woods by raman imaging and chemometrics. Journal of the Brazilian Chemical Society, São Paulo, v. 26, n. 6, p. 1297-1305, jun. 2015. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000601297&lng=en&nrm=iso>. Acesso em: 16 abr. 2018. doi: http://dx.doi.org/10.5935/0103-5053.20150096.
url http://repositorio.unb.br/handle/10482/29691
http://dx.doi.org/10.5935/0103-5053.20150096
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.format.none.fl_str_mv application/pdf
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 reponame:Repositório Institucional da UnB
instname:Universidade de Brasília (UnB)
instacron:UNB
instname_str Universidade de Brasília (UnB)
instacron_str UNB
institution UNB
reponame_str Repositório Institucional da UnB
collection Repositório Institucional da UnB
repository.name.fl_str_mv Repositório Institucional da UnB - Universidade de Brasília (UnB)
repository.mail.fl_str_mv repositorio@unb.br
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