Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes
Autor(a) principal: | |
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Data de Publicação: | 2021 |
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/10400.9/3621 |
Resumo: | ABSTRACT: Residues of Cistus ladanifer obtained after commercial steam distillation for essential oil production were evaluated to produce cellulose enriched solids and added-value lignin-derived compounds. The delignification of extracted (CLRext) and extracted and hydrothermally pretreated biomass (CLRtreat) was studied using two organosolv processes, ethanol/water mixtures (EO), and alkali-catalyzed glycerol (AGO), and by an alkali (sodium hydroxide) process (ASP) under different reaction conditions. The phenolic composition of soluble lignin was determined by capillary zone electrophoresis and by Py-GC/MS, which was also used to establish the monomeric composition of both the delignified solids and isolated lignin. The enzymatic saccharification of the delignified solids was also evaluated. The ASP (4% NaOH, 2 h) lead to both the highest delignification and enzymatic saccharification (87% and 79%, respectively). A delignification of 76% and enzymatic hydrolysis yields of 72% were obtained for AGO (4% NaOH) while EO processes led to lower delignification (maximum lignin removal 29%). The residual lignin in the delignified solids were enriched in G- and H-units, with S-units being preferentially removed. The main phenolics present in the ASP and AGO liquors were vanillic acid and epicatechin, while gallic acid was the main phenolic in the EO liquors. The results showed that C. ladanifer residues can be a biomass source for the production of lignin-derivatives and glucan-rich solids to be further used in bioconversion processes. |
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Delignification of Cistus ladanifer Biomass by Organosolv and Alkali ProcessesBiorefineryEnzymatic hydrolysisBiomass Pre-treatmentLigninOrganosolv processPyrolysisABSTRACT: Residues of Cistus ladanifer obtained after commercial steam distillation for essential oil production were evaluated to produce cellulose enriched solids and added-value lignin-derived compounds. The delignification of extracted (CLRext) and extracted and hydrothermally pretreated biomass (CLRtreat) was studied using two organosolv processes, ethanol/water mixtures (EO), and alkali-catalyzed glycerol (AGO), and by an alkali (sodium hydroxide) process (ASP) under different reaction conditions. The phenolic composition of soluble lignin was determined by capillary zone electrophoresis and by Py-GC/MS, which was also used to establish the monomeric composition of both the delignified solids and isolated lignin. The enzymatic saccharification of the delignified solids was also evaluated. The ASP (4% NaOH, 2 h) lead to both the highest delignification and enzymatic saccharification (87% and 79%, respectively). A delignification of 76% and enzymatic hydrolysis yields of 72% were obtained for AGO (4% NaOH) while EO processes led to lower delignification (maximum lignin removal 29%). The residual lignin in the delignified solids were enriched in G- and H-units, with S-units being preferentially removed. The main phenolics present in the ASP and AGO liquors were vanillic acid and epicatechin, while gallic acid was the main phenolic in the EO liquors. The results showed that C. ladanifer residues can be a biomass source for the production of lignin-derivatives and glucan-rich solids to be further used in bioconversion processes.MDPIRepositório do LNEGAlves Ferreira Caturra, Júnia AparecidaLourenço, AnaMorgado, FranciscaDuarte, Luís C.Roseiro, Luisa B.Fernandes, M. C.Pereira, HelenaCarvalheiro, Florbela2021-12-02T15:37:52Z2021-02-01T00:00:00Z2021-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/3621engAlves-Ferreira, Júnia... [et.al.] - Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes. In: Energies, 2021, Vol. 14(4), article nº112710.3390/en140411271996-1073info: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:RCAAP2022-09-06T12:29:18Zoai:repositorio.lneg.pt:10400.9/3621Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:36:49.714229Repositório 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 |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes |
title |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes |
spellingShingle |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes Alves Ferreira Caturra, Júnia Aparecida Biorefinery Enzymatic hydrolysis Biomass Pre-treatment Lignin Organosolv process Pyrolysis |
title_short |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes |
title_full |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes |
title_fullStr |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes |
title_full_unstemmed |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes |
title_sort |
Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes |
author |
Alves Ferreira Caturra, Júnia Aparecida |
author_facet |
Alves Ferreira Caturra, Júnia Aparecida Lourenço, Ana Morgado, Francisca Duarte, Luís C. Roseiro, Luisa B. Fernandes, M. C. Pereira, Helena Carvalheiro, Florbela |
author_role |
author |
author2 |
Lourenço, Ana Morgado, Francisca Duarte, Luís C. Roseiro, Luisa B. Fernandes, M. C. Pereira, Helena Carvalheiro, Florbela |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Alves Ferreira Caturra, Júnia Aparecida Lourenço, Ana Morgado, Francisca Duarte, Luís C. Roseiro, Luisa B. Fernandes, M. C. Pereira, Helena Carvalheiro, Florbela |
dc.subject.por.fl_str_mv |
Biorefinery Enzymatic hydrolysis Biomass Pre-treatment Lignin Organosolv process Pyrolysis |
topic |
Biorefinery Enzymatic hydrolysis Biomass Pre-treatment Lignin Organosolv process Pyrolysis |
description |
ABSTRACT: Residues of Cistus ladanifer obtained after commercial steam distillation for essential oil production were evaluated to produce cellulose enriched solids and added-value lignin-derived compounds. The delignification of extracted (CLRext) and extracted and hydrothermally pretreated biomass (CLRtreat) was studied using two organosolv processes, ethanol/water mixtures (EO), and alkali-catalyzed glycerol (AGO), and by an alkali (sodium hydroxide) process (ASP) under different reaction conditions. The phenolic composition of soluble lignin was determined by capillary zone electrophoresis and by Py-GC/MS, which was also used to establish the monomeric composition of both the delignified solids and isolated lignin. The enzymatic saccharification of the delignified solids was also evaluated. The ASP (4% NaOH, 2 h) lead to both the highest delignification and enzymatic saccharification (87% and 79%, respectively). A delignification of 76% and enzymatic hydrolysis yields of 72% were obtained for AGO (4% NaOH) while EO processes led to lower delignification (maximum lignin removal 29%). The residual lignin in the delignified solids were enriched in G- and H-units, with S-units being preferentially removed. The main phenolics present in the ASP and AGO liquors were vanillic acid and epicatechin, while gallic acid was the main phenolic in the EO liquors. The results showed that C. ladanifer residues can be a biomass source for the production of lignin-derivatives and glucan-rich solids to be further used in bioconversion processes. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-02T15:37:52Z 2021-02-01T00:00:00Z 2021-02-01T00:00:00Z |
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/10400.9/3621 |
url |
http://hdl.handle.net/10400.9/3621 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Alves-Ferreira, Júnia... [et.al.] - Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes. In: Energies, 2021, Vol. 14(4), article nº1127 10.3390/en14041127 1996-1073 |
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 |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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 |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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