High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose
Autor(a) principal: | |
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Data de Publicação: | 2011 |
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/10773/6945 |
Resumo: | The effect of high pressure (HP) pre-treatments on the subsequent enzymatic hydrolysis of cellulose from bleached kraft Eucalyptus globulus pulp by cellulase from Tricoderma viride was evaluated. Pressure pre-treatments of 300 and 400 MPa during 5–45 min, lead to both an increased rate and degree of hydrolysis, reaching values ranging from 1.5- to 1.9-fold, quantified by the formation of reducing sugars. Both the pressure and time under pressure influenced the enzymatic hydrosability of the cellulosic pulps, with the former being more important. The results indicate that the pressure pre-treatments promoted an increased accessibility of cellulose towards cellulase in the cell wall. The results obtained open promising possibilities, to contribute to overcome conventional limitations of enzymatic cellulose hydrolysis for the production of fermentable glucose, for the production of second generation bioethanol and chemicals by enhancement of both rate and yield of hydrolysis. The results are also of interest for the preparation of “pressure engineered” celullose with incremented tailored hydrolysis patterns. |
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High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of celluloseHigh pressure pre-treatmentscellulose hydrolysisBioethanolThe effect of high pressure (HP) pre-treatments on the subsequent enzymatic hydrolysis of cellulose from bleached kraft Eucalyptus globulus pulp by cellulase from Tricoderma viride was evaluated. Pressure pre-treatments of 300 and 400 MPa during 5–45 min, lead to both an increased rate and degree of hydrolysis, reaching values ranging from 1.5- to 1.9-fold, quantified by the formation of reducing sugars. Both the pressure and time under pressure influenced the enzymatic hydrosability of the cellulosic pulps, with the former being more important. The results indicate that the pressure pre-treatments promoted an increased accessibility of cellulose towards cellulase in the cell wall. The results obtained open promising possibilities, to contribute to overcome conventional limitations of enzymatic cellulose hydrolysis for the production of fermentable glucose, for the production of second generation bioethanol and chemicals by enhancement of both rate and yield of hydrolysis. The results are also of interest for the preparation of “pressure engineered” celullose with incremented tailored hydrolysis patterns.Royal Society of Chemistry2013-02-05T15:48:37Z2011-08-08T00:00:00Z2011-08-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/6945eng1463-926210.1039/C1GC15500HFerreira, Ana R. F. C.Figueiredo, Andreia B.Evtuguin, Dmitry V.Saraiva, Jorge A.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:RCAAP2024-02-22T11:11:27Zoai:ria.ua.pt:10773/6945Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:44:38.872177Repositório 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 |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose |
title |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose |
spellingShingle |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose Ferreira, Ana R. F. C. High pressure pre-treatments cellulose hydrolysis Bioethanol |
title_short |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose |
title_full |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose |
title_fullStr |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose |
title_full_unstemmed |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose |
title_sort |
High pressure pre-treatments promote higher rate and degree of enzymatic hydrolysis of cellulose |
author |
Ferreira, Ana R. F. C. |
author_facet |
Ferreira, Ana R. F. C. Figueiredo, Andreia B. Evtuguin, Dmitry V. Saraiva, Jorge A. |
author_role |
author |
author2 |
Figueiredo, Andreia B. Evtuguin, Dmitry V. Saraiva, Jorge A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Ferreira, Ana R. F. C. Figueiredo, Andreia B. Evtuguin, Dmitry V. Saraiva, Jorge A. |
dc.subject.por.fl_str_mv |
High pressure pre-treatments cellulose hydrolysis Bioethanol |
topic |
High pressure pre-treatments cellulose hydrolysis Bioethanol |
description |
The effect of high pressure (HP) pre-treatments on the subsequent enzymatic hydrolysis of cellulose from bleached kraft Eucalyptus globulus pulp by cellulase from Tricoderma viride was evaluated. Pressure pre-treatments of 300 and 400 MPa during 5–45 min, lead to both an increased rate and degree of hydrolysis, reaching values ranging from 1.5- to 1.9-fold, quantified by the formation of reducing sugars. Both the pressure and time under pressure influenced the enzymatic hydrosability of the cellulosic pulps, with the former being more important. The results indicate that the pressure pre-treatments promoted an increased accessibility of cellulose towards cellulase in the cell wall. The results obtained open promising possibilities, to contribute to overcome conventional limitations of enzymatic cellulose hydrolysis for the production of fermentable glucose, for the production of second generation bioethanol and chemicals by enhancement of both rate and yield of hydrolysis. The results are also of interest for the preparation of “pressure engineered” celullose with incremented tailored hydrolysis patterns. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-08-08T00:00:00Z 2011-08-08 2013-02-05T15:48:37Z |
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/10773/6945 |
url |
http://hdl.handle.net/10773/6945 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1463-9262 10.1039/C1GC15500H |
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 |
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 |
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1799137498347077632 |