Delignification of Cistus ladanifer biomass by organosolv and alkali processes

Detalhes bibliográficos
Autor(a) principal: Alves-Ferreira, Júnia
Data de Publicação: 2021
Outros Autores: Lourenço, Ana, Morgado, Francisca, Duarte, Luís C., Roseiro, Luísa B., Fernandes, Maria C., Pereira, Helena, Carvalheiro, Florbela
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/21458
Resumo: 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 Gand 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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spelling Delignification of Cistus ladanifer biomass by organosolv and alkali processesbiorefineryenzymatic hydrolysisglucan-enriched solidslignin-derived productsanalytical pyrolysisrock-roseResidues 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 Gand 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 processesMDPIRepositório da Universidade de LisboaAlves-Ferreira, JúniaLourenço, AnaMorgado, FranciscaDuarte, Luís C.Roseiro, Luísa B.Fernandes, Maria C.Pereira, HelenaCarvalheiro, Florbela2021-06-15T14:15:15Z20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/21458engAlves-Ferreira, J.; Lourenço, A.; Morgado, F.; Duarte, L.C.; Roseiro, L.B.; Fernandes, M.C.; Pereira, H.; Carvalheiro, F. Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes. Energies 2021, 14, 1127https:// doi.org/10.3390/en14041127info: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:RCAAP2023-03-06T14:50:54Zoai:www.repository.utl.pt:10400.5/21458Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:06:02.504888Repositório 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, Júnia
biorefinery
enzymatic hydrolysis
glucan-enriched solids
lignin-derived products
analytical pyrolysis
rock-rose
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, Júnia
author_facet Alves-Ferreira, Júnia
Lourenço, Ana
Morgado, Francisca
Duarte, Luís C.
Roseiro, Luísa B.
Fernandes, Maria C.
Pereira, Helena
Carvalheiro, Florbela
author_role author
author2 Lourenço, Ana
Morgado, Francisca
Duarte, Luís C.
Roseiro, Luísa B.
Fernandes, Maria C.
Pereira, Helena
Carvalheiro, Florbela
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Alves-Ferreira, Júnia
Lourenço, Ana
Morgado, Francisca
Duarte, Luís C.
Roseiro, Luísa B.
Fernandes, Maria C.
Pereira, Helena
Carvalheiro, Florbela
dc.subject.por.fl_str_mv biorefinery
enzymatic hydrolysis
glucan-enriched solids
lignin-derived products
analytical pyrolysis
rock-rose
topic biorefinery
enzymatic hydrolysis
glucan-enriched solids
lignin-derived products
analytical pyrolysis
rock-rose
description 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 Gand 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 2021-06-15T14:15:15Z
2021
2021-01-01T00:00:00Z
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/10400.5/21458
url http://hdl.handle.net/10400.5/21458
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Alves-Ferreira, J.; Lourenço, A.; Morgado, F.; Duarte, L.C.; Roseiro, L.B.; Fernandes, M.C.; Pereira, H.; Carvalheiro, F. Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes. Energies 2021, 14, 1127
https:// doi.org/10.3390/en14041127
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
instname_str 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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