Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/10400.9/3054 |
Resumo: | ABSTRACT: This work aims to demonstrate the importance of hydrothermal alkaline sulfite pretreatment of sugarcane bagasse in the delivery of fermentable sugars. The pretreatment conditions, namely sodium sulfite loads (5.0-10.0 wt%), temperatures (140-160 degrees C) and reaction times (30-60 min), were tested according to the full factorial design of experiments. The employed pretreatment was characterized by high lignin removal (43-77 wt%) and partial extraction of xylans (up to 25.0 wt%), mainly by cleavage of acetyl and arabinosyl groups. After 72 h of enzymatic hydrolysis with 10 FPU (filter paper unit) cellulase and 10 CBU (cellobiose unit) -glucosidase per g of pretreated bagasse, the conversion of the carbohydrate-enriched substrates was in the range of 51 to 80 mol% for cellulose and 45 to 71 mol% for xylans. The best hydrothermal alkaline sulfite pretreatment conditions (10.0 wt% sulfite load, 150 degrees C and 45 min) were found to be highly efficient for the delivery of fermentable sugars with a yield as high as 40.4 +/- 1.9 g for 100 g native bagasse. |
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Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasseLignocellulosic biomassIonic liquidsBiorefinery conceptHydrolysisSugarcane bagasseABSTRACT: This work aims to demonstrate the importance of hydrothermal alkaline sulfite pretreatment of sugarcane bagasse in the delivery of fermentable sugars. The pretreatment conditions, namely sodium sulfite loads (5.0-10.0 wt%), temperatures (140-160 degrees C) and reaction times (30-60 min), were tested according to the full factorial design of experiments. The employed pretreatment was characterized by high lignin removal (43-77 wt%) and partial extraction of xylans (up to 25.0 wt%), mainly by cleavage of acetyl and arabinosyl groups. After 72 h of enzymatic hydrolysis with 10 FPU (filter paper unit) cellulase and 10 CBU (cellobiose unit) -glucosidase per g of pretreated bagasse, the conversion of the carbohydrate-enriched substrates was in the range of 51 to 80 mol% for cellulose and 45 to 71 mol% for xylans. The best hydrothermal alkaline sulfite pretreatment conditions (10.0 wt% sulfite load, 150 degrees C and 45 min) were found to be highly efficient for the delivery of fermentable sugars with a yield as high as 40.4 +/- 1.9 g for 100 g native bagasse.Royal Society of ChemistryRepositório do LNEGTavares, JoãoLukasik, Rafal M.Paiva, Teresa deSilva, Flávio da2018-09-18T14:28:31Z2018-01-01T00:00:00Z2018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/3054engTavares, João; Lukasik, Rafal M.; Paiva, Teresa de; [et.al.]. - Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse. In: New Journal of Chemistry, 2018, Vol. 42, p. 4474-44841144-0546info: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:RCAAP2022-09-06T12:28:24Zoai:repositorio.lneg.pt:10400.9/3054Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:36:12.798655Repositório 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 |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse |
title |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse |
spellingShingle |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse Tavares, João Lignocellulosic biomass Ionic liquids Biorefinery concept Hydrolysis Sugarcane bagasse |
title_short |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse |
title_full |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse |
title_fullStr |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse |
title_full_unstemmed |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse |
title_sort |
Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse |
author |
Tavares, João |
author_facet |
Tavares, João Lukasik, Rafal M. Paiva, Teresa de Silva, Flávio da |
author_role |
author |
author2 |
Lukasik, Rafal M. Paiva, Teresa de Silva, Flávio da |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Tavares, João Lukasik, Rafal M. Paiva, Teresa de Silva, Flávio da |
dc.subject.por.fl_str_mv |
Lignocellulosic biomass Ionic liquids Biorefinery concept Hydrolysis Sugarcane bagasse |
topic |
Lignocellulosic biomass Ionic liquids Biorefinery concept Hydrolysis Sugarcane bagasse |
description |
ABSTRACT: This work aims to demonstrate the importance of hydrothermal alkaline sulfite pretreatment of sugarcane bagasse in the delivery of fermentable sugars. The pretreatment conditions, namely sodium sulfite loads (5.0-10.0 wt%), temperatures (140-160 degrees C) and reaction times (30-60 min), were tested according to the full factorial design of experiments. The employed pretreatment was characterized by high lignin removal (43-77 wt%) and partial extraction of xylans (up to 25.0 wt%), mainly by cleavage of acetyl and arabinosyl groups. After 72 h of enzymatic hydrolysis with 10 FPU (filter paper unit) cellulase and 10 CBU (cellobiose unit) -glucosidase per g of pretreated bagasse, the conversion of the carbohydrate-enriched substrates was in the range of 51 to 80 mol% for cellulose and 45 to 71 mol% for xylans. The best hydrothermal alkaline sulfite pretreatment conditions (10.0 wt% sulfite load, 150 degrees C and 45 min) were found to be highly efficient for the delivery of fermentable sugars with a yield as high as 40.4 +/- 1.9 g for 100 g native bagasse. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-09-18T14:28:31Z 2018-01-01T00:00:00Z 2018-01-01T00:00:00Z |
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/10400.9/3054 |
url |
http://hdl.handle.net/10400.9/3054 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Tavares, João; Lukasik, Rafal M.; Paiva, Teresa de; [et.al.]. - Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse. In: New Journal of Chemistry, 2018, Vol. 42, p. 4474-4484 1144-0546 |
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 |
Royal Society of Chemistry |
publisher.none.fl_str_mv |
Royal Society of Chemistry |
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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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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1799130228048527360 |