Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept

Detalhes bibliográficos
Autor(a) principal: Romaní, Aloia
Data de Publicação: 2016
Outros Autores: Tomaz, Pablo D., Garrote, Gil, Teixeira, J. A., Domingues, Lucília
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/42679
Resumo: The aim of this work was the evaluation of lime pretreatment combined or not with previous step of autohydrolysis for oat straw valorization. Under selected conditions of lime pretreatment, 96% of glucan and 77% of xylan were recovered and 42% of delignification was achieved. Xylose fermentation to ethanol by metabolic engineered Saccharomyces cerevisiae (MEC1133) strain improved the ethanol production by 22% achieving 41 g/L. Alternatively, first step of autohydrolysis (S0=4.22) allowed a high oligosaccharides recovery (68%) and subsequent lime pretreatment attained a 57% of delignification and 99% of glucan to glucose conversion. Oat straw processed by autohydrolysis and lime pretreatment reached the maximal ethanol concentration (50 g/L). Both strategies led to oat straw valorization into bioethanol, oligosaccharides and lignin indicating that these pretreatments are adequate as a first stage within an oat straw biorefinery.
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spelling Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery conceptOat strawLime pretreatmentAutohydrolysisBiorefineryBioethanolScience & TechnologyThe aim of this work was the evaluation of lime pretreatment combined or not with previous step of autohydrolysis for oat straw valorization. Under selected conditions of lime pretreatment, 96% of glucan and 77% of xylan were recovered and 42% of delignification was achieved. Xylose fermentation to ethanol by metabolic engineered Saccharomyces cerevisiae (MEC1133) strain improved the ethanol production by 22% achieving 41 g/L. Alternatively, first step of autohydrolysis (S0=4.22) allowed a high oligosaccharides recovery (68%) and subsequent lime pretreatment attained a 57% of delignification and 99% of glucan to glucose conversion. Oat straw processed by autohydrolysis and lime pretreatment reached the maximal ethanol concentration (50 g/L). Both strategies led to oat straw valorization into bioethanol, oligosaccharides and lignin indicating that these pretreatments are adequate as a first stage within an oat straw biorefinery.The authors thank the financial support from the Strategic Project of UID/BIO/04469/2013 CEB Unit (Funding agency for Science and Technology, FCT, Portugal) and for the Project CTQ2012-30855 of the Spanish "Ministry of Science and Innovation", partially funded by the FEDER program of the European Union. A Romani thanks her post-doctoral grant funded by Xunta of Galicia (Plan I2C, 2014).Elsevier B.V.Universidade do MinhoRomaní, AloiaTomaz, Pablo D.Garrote, GilTeixeira, J. A.Domingues, Lucília2016-112016-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/42679engRomaní, Aloia; Tomaz, Pablo D.; Garrote, Gil; Teixeira, J. A.; Domingues, Lucília, Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept. Bioresource Technology, 220, 323-332, 20160960-85240960-852410.1016/j.biortech.2016.08.07727591518http://www.journals.elsevier.com/bioresource-technology/info: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:RCAAP2023-07-21T12:18:35Zoai:repositorium.sdum.uminho.pt:1822/42679Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:11:25.404781Repositório 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 Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
title Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
spellingShingle Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
Romaní, Aloia
Oat straw
Lime pretreatment
Autohydrolysis
Biorefinery
Bioethanol
Science & Technology
title_short Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
title_full Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
title_fullStr Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
title_full_unstemmed Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
title_sort Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept
author Romaní, Aloia
author_facet Romaní, Aloia
Tomaz, Pablo D.
Garrote, Gil
Teixeira, J. A.
Domingues, Lucília
author_role author
author2 Tomaz, Pablo D.
Garrote, Gil
Teixeira, J. A.
Domingues, Lucília
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Romaní, Aloia
Tomaz, Pablo D.
Garrote, Gil
Teixeira, J. A.
Domingues, Lucília
dc.subject.por.fl_str_mv Oat straw
Lime pretreatment
Autohydrolysis
Biorefinery
Bioethanol
Science & Technology
topic Oat straw
Lime pretreatment
Autohydrolysis
Biorefinery
Bioethanol
Science & Technology
description The aim of this work was the evaluation of lime pretreatment combined or not with previous step of autohydrolysis for oat straw valorization. Under selected conditions of lime pretreatment, 96% of glucan and 77% of xylan were recovered and 42% of delignification was achieved. Xylose fermentation to ethanol by metabolic engineered Saccharomyces cerevisiae (MEC1133) strain improved the ethanol production by 22% achieving 41 g/L. Alternatively, first step of autohydrolysis (S0=4.22) allowed a high oligosaccharides recovery (68%) and subsequent lime pretreatment attained a 57% of delignification and 99% of glucan to glucose conversion. Oat straw processed by autohydrolysis and lime pretreatment reached the maximal ethanol concentration (50 g/L). Both strategies led to oat straw valorization into bioethanol, oligosaccharides and lignin indicating that these pretreatments are adequate as a first stage within an oat straw biorefinery.
publishDate 2016
dc.date.none.fl_str_mv 2016-11
2016-11-01T00:00:00Z
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/1822/42679
url http://hdl.handle.net/1822/42679
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Romaní, Aloia; Tomaz, Pablo D.; Garrote, Gil; Teixeira, J. A.; Domingues, Lucília, Combined alkali and hydrothermal pretreatments for oat straw valorization within a biorefinery concept. Bioresource Technology, 220, 323-332, 2016
0960-8524
0960-8524
10.1016/j.biortech.2016.08.077
27591518
http://www.journals.elsevier.com/bioresource-technology/
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 B.V.
publisher.none.fl_str_mv Elsevier B.V.
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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