Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/5175 |
Resumo: | A comparative study on the chemical composition of oak cork (Quercus suber L.) and corresponding industrial residues and birch (Betula pendula L.) outer bark is reported. Cork oak samples have lower extractives contents (6-9%) and higher contents of carbohydrates and lignin (23-27 and 33-38%, respectively) than those found for birch outer bark (40, 6 and 9%, respectively); suberin contents accounted for around 30% of cork, 11% of industrial cork powder and 45% of birch outer bark. Analysis of the suberin monomeric composition revealed that C18 and C22 omega-hydroxyfatty acids (including mid-chain epoxy- and dihydroxy-derivatives), followed by alpha,omega-dicarboxylic acids, are the main components in both suberins, with 9,10-epoxy-18-hydroxyoctadecanoic, 18-hydroxyoctadec-9-enoic, 9,10,18-trihydroxyoctadecanoic and octadec-9-enoic acids as the major components. The differences in the relative amounts of these acids in the suberin samples and the impact on the potential exploitation of the different industrial by-products are discussed. (C) 2008 Elsevier B.V All rights reserved. |
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Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative studyCork oakQuercus suber L.CorkBirchBetula pendula L.SuberinChemical compositionHydroxyfatty acidsDicarboxylic acidsA comparative study on the chemical composition of oak cork (Quercus suber L.) and corresponding industrial residues and birch (Betula pendula L.) outer bark is reported. Cork oak samples have lower extractives contents (6-9%) and higher contents of carbohydrates and lignin (23-27 and 33-38%, respectively) than those found for birch outer bark (40, 6 and 9%, respectively); suberin contents accounted for around 30% of cork, 11% of industrial cork powder and 45% of birch outer bark. Analysis of the suberin monomeric composition revealed that C18 and C22 omega-hydroxyfatty acids (including mid-chain epoxy- and dihydroxy-derivatives), followed by alpha,omega-dicarboxylic acids, are the main components in both suberins, with 9,10-epoxy-18-hydroxyoctadecanoic, 18-hydroxyoctadec-9-enoic, 9,10,18-trihydroxyoctadecanoic and octadec-9-enoic acids as the major components. The differences in the relative amounts of these acids in the suberin samples and the impact on the potential exploitation of the different industrial by-products are discussed. (C) 2008 Elsevier B.V All rights reserved.Elsevier2012-01-17T12:21:20Z2009-01-01T00:00:00Z2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/5175eng0926-669010.1016/j.indcrop.2008.04.015Pinto, Paula C. R. O.Sousa, Andreia F.Silvestre, Armando J. D.Neto, Carlos PascoalGandini, AlessandroEckerman, ChristerHolmbom, Bjarneinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:06:59Zoai:ria.ua.pt:10773/5175Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:43:05.540385Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study |
title |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study |
spellingShingle |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study Pinto, Paula C. R. O. Cork oak Quercus suber L. Cork Birch Betula pendula L. Suberin Chemical composition Hydroxyfatty acids Dicarboxylic acids |
title_short |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study |
title_full |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study |
title_fullStr |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study |
title_full_unstemmed |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study |
title_sort |
Quercus suber and Betula pendula outer barks as renewable sources of oleochemicals: A comparative study |
author |
Pinto, Paula C. R. O. |
author_facet |
Pinto, Paula C. R. O. Sousa, Andreia F. Silvestre, Armando J. D. Neto, Carlos Pascoal Gandini, Alessandro Eckerman, Christer Holmbom, Bjarne |
author_role |
author |
author2 |
Sousa, Andreia F. Silvestre, Armando J. D. Neto, Carlos Pascoal Gandini, Alessandro Eckerman, Christer Holmbom, Bjarne |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Pinto, Paula C. R. O. Sousa, Andreia F. Silvestre, Armando J. D. Neto, Carlos Pascoal Gandini, Alessandro Eckerman, Christer Holmbom, Bjarne |
dc.subject.por.fl_str_mv |
Cork oak Quercus suber L. Cork Birch Betula pendula L. Suberin Chemical composition Hydroxyfatty acids Dicarboxylic acids |
topic |
Cork oak Quercus suber L. Cork Birch Betula pendula L. Suberin Chemical composition Hydroxyfatty acids Dicarboxylic acids |
description |
A comparative study on the chemical composition of oak cork (Quercus suber L.) and corresponding industrial residues and birch (Betula pendula L.) outer bark is reported. Cork oak samples have lower extractives contents (6-9%) and higher contents of carbohydrates and lignin (23-27 and 33-38%, respectively) than those found for birch outer bark (40, 6 and 9%, respectively); suberin contents accounted for around 30% of cork, 11% of industrial cork powder and 45% of birch outer bark. Analysis of the suberin monomeric composition revealed that C18 and C22 omega-hydroxyfatty acids (including mid-chain epoxy- and dihydroxy-derivatives), followed by alpha,omega-dicarboxylic acids, are the main components in both suberins, with 9,10-epoxy-18-hydroxyoctadecanoic, 18-hydroxyoctadec-9-enoic, 9,10,18-trihydroxyoctadecanoic and octadec-9-enoic acids as the major components. The differences in the relative amounts of these acids in the suberin samples and the impact on the potential exploitation of the different industrial by-products are discussed. (C) 2008 Elsevier B.V All rights reserved. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01T00:00:00Z 2009 2012-01-17T12:21:20Z |
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://hdl.handle.net/10773/5175 |
url |
http://hdl.handle.net/10773/5175 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0926-6690 10.1016/j.indcrop.2008.04.015 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137480005386240 |