Synergistic effect of delignification and treatment with the ionic liquid 1-ethyl-3-methylimidazolium acetate on enzymatic digestibility of poplar wood.
Identifieur interne : 002031 ( Main/Exploration ); précédent : 002030; suivant : 002032Synergistic effect of delignification and treatment with the ionic liquid 1-ethyl-3-methylimidazolium acetate on enzymatic digestibility of poplar wood.
Auteurs : Long Wu [Japon] ; Akio Kumagai [Japon] ; Seung-Hwan Lee [Corée du Sud] ; Takashi Endo [Japon]Source :
- Bioresource technology [ 1873-2976 ] ; 2014.
Descripteurs français
- KwdFr :
- Biomasse (MeSH), Bois (effets des médicaments et des substances chimiques), Cellobiose (métabolisme), Cellulase (métabolisme), Diffraction des rayons X (MeSH), Glucanes (analyse), Glucose (métabolisme), Hydrolyse (effets des médicaments et des substances chimiques), Imidazoles (pharmacologie), Lignine (isolement et purification), Populus (effets des médicaments et des substances chimiques), Xylanes (analyse), Xylose (métabolisme).
- MESH :
- analyse : Glucanes, Xylanes.
- effets des médicaments et des substances chimiques : Bois, Hydrolyse, Populus.
- isolement et purification : Lignine.
- métabolisme : Cellobiose, Cellulase, Glucose, Xylose.
- pharmacologie : Imidazoles.
- Biomasse, Diffraction des rayons X.
English descriptors
- KwdEn :
- Biomass (MeSH), Cellobiose (metabolism), Cellulase (metabolism), Glucans (analysis), Glucose (metabolism), Hydrolysis (drug effects), Imidazoles (pharmacology), Lignin (isolation & purification), Populus (drug effects), Wood (drug effects), X-Ray Diffraction (MeSH), Xylans (analysis), Xylose (metabolism).
- MESH :
- chemical , analysis : Glucans, Xylans.
- chemical , isolation & purification : Lignin.
- chemical , metabolism : Cellobiose, Cellulase, Glucose, Xylose.
- drug effects : Hydrolysis, Populus, Wood.
- chemical , pharmacology : Imidazoles.
- Biomass, X-Ray Diffraction.
Abstract
This study examined the effects of removing key recalcitrance factors by ionic liquid (IL) treatment on the cellulase digestibility of poplar wood. Ground biomass was subjected to chlorite delignification and IL (1-ethyl-3-methylimidazolium acetate) treatment alone or in combination. The compositional and structural features of differentially treated biomass samples and their hydrolysis performance at various cellulase loadings were investigated. IL treatment caused minor compositional changes but drastically decreased cellulose crystallinity; in particular, when administered after delignification, an X-ray diffractogram similar to that of cellulose II polymorph was observed, suggesting that in the absence of lignin, the cellulose was dissolved in the IL and regenerated in water with a polymorphic transformation. The structural changes induced by the combined delignification-IL treatment facilitated the enzymatic hydrolysis of cellulose; the biomass could be fully degraded within 72 h by 4 FPU of cellulase per gram glucan, with cellobiose degradation being the rate-limiting step.
DOI: 10.1016/j.biortech.2014.03.144
PubMed: 24755318
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<series><title level="j">Bioresource technology</title>
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<imprint><date when="2014" type="published">2014</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomass (MeSH)</term>
<term>Cellobiose (metabolism)</term>
<term>Cellulase (metabolism)</term>
<term>Glucans (analysis)</term>
<term>Glucose (metabolism)</term>
<term>Hydrolysis (drug effects)</term>
<term>Imidazoles (pharmacology)</term>
<term>Lignin (isolation & purification)</term>
<term>Populus (drug effects)</term>
<term>Wood (drug effects)</term>
<term>X-Ray Diffraction (MeSH)</term>
<term>Xylans (analysis)</term>
<term>Xylose (metabolism)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Biomasse (MeSH)</term>
<term>Bois (effets des médicaments et des substances chimiques)</term>
<term>Cellobiose (métabolisme)</term>
<term>Cellulase (métabolisme)</term>
<term>Diffraction des rayons X (MeSH)</term>
<term>Glucanes (analyse)</term>
<term>Glucose (métabolisme)</term>
<term>Hydrolyse (effets des médicaments et des substances chimiques)</term>
<term>Imidazoles (pharmacologie)</term>
<term>Lignine (isolement et purification)</term>
<term>Populus (effets des médicaments et des substances chimiques)</term>
<term>Xylanes (analyse)</term>
<term>Xylose (métabolisme)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Glucans</term>
<term>Xylans</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="isolation & purification" xml:lang="en"><term>Lignin</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Cellobiose</term>
<term>Cellulase</term>
<term>Glucose</term>
<term>Xylose</term>
</keywords>
<keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Glucanes</term>
<term>Xylanes</term>
</keywords>
<keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Hydrolysis</term>
<term>Populus</term>
<term>Wood</term>
</keywords>
<keywords scheme="MESH" qualifier="effets des médicaments et des substances chimiques" xml:lang="fr"><term>Bois</term>
<term>Hydrolyse</term>
<term>Populus</term>
</keywords>
<keywords scheme="MESH" qualifier="isolement et purification" xml:lang="fr"><term>Lignine</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Cellobiose</term>
<term>Cellulase</term>
<term>Glucose</term>
<term>Xylose</term>
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<keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr"><term>Imidazoles</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Imidazoles</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Biomass</term>
<term>X-Ray Diffraction</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Biomasse</term>
<term>Diffraction des rayons X</term>
</keywords>
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<front><div type="abstract" xml:lang="en">This study examined the effects of removing key recalcitrance factors by ionic liquid (IL) treatment on the cellulase digestibility of poplar wood. Ground biomass was subjected to chlorite delignification and IL (1-ethyl-3-methylimidazolium acetate) treatment alone or in combination. The compositional and structural features of differentially treated biomass samples and their hydrolysis performance at various cellulase loadings were investigated. IL treatment caused minor compositional changes but drastically decreased cellulose crystallinity; in particular, when administered after delignification, an X-ray diffractogram similar to that of cellulose II polymorph was observed, suggesting that in the absence of lignin, the cellulose was dissolved in the IL and regenerated in water with a polymorphic transformation. The structural changes induced by the combined delignification-IL treatment facilitated the enzymatic hydrolysis of cellulose; the biomass could be fully degraded within 72 h by 4 FPU of cellulase per gram glucan, with cellobiose degradation being the rate-limiting step.</div>
</front>
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<ArticleTitle>Synergistic effect of delignification and treatment with the ionic liquid 1-ethyl-3-methylimidazolium acetate on enzymatic digestibility of poplar wood.</ArticleTitle>
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<Abstract><AbstractText>This study examined the effects of removing key recalcitrance factors by ionic liquid (IL) treatment on the cellulase digestibility of poplar wood. Ground biomass was subjected to chlorite delignification and IL (1-ethyl-3-methylimidazolium acetate) treatment alone or in combination. The compositional and structural features of differentially treated biomass samples and their hydrolysis performance at various cellulase loadings were investigated. IL treatment caused minor compositional changes but drastically decreased cellulose crystallinity; in particular, when administered after delignification, an X-ray diffractogram similar to that of cellulose II polymorph was observed, suggesting that in the absence of lignin, the cellulose was dissolved in the IL and regenerated in water with a polymorphic transformation. The structural changes induced by the combined delignification-IL treatment facilitated the enzymatic hydrolysis of cellulose; the biomass could be fully degraded within 72 h by 4 FPU of cellulase per gram glucan, with cellobiose degradation being the rate-limiting step.</AbstractText>
<CopyrightInformation>Copyright © 2014 Elsevier Ltd. All rights reserved.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Wu</LastName>
<ForeName>Long</ForeName>
<Initials>L</Initials>
<AffiliationInfo><Affiliation>Biomass Refinery Research Center, National Institute of Advanced Industrial Science and Technology, 3-11-32 Kagamiyama, Higashihiroshima, Hiroshima 739-0046, Japan.</Affiliation>
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<ForeName>Akio</ForeName>
<Initials>A</Initials>
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<Initials>SH</Initials>
<AffiliationInfo><Affiliation>Biomass Refinery Research Center, National Institute of Advanced Industrial Science and Technology, 3-11-32 Kagamiyama, Higashihiroshima, Hiroshima 739-0046, Japan; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chunchen 200-701, Republic of Korea.</Affiliation>
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<Author ValidYN="Y"><LastName>Endo</LastName>
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<ChemicalList><Chemical><RegistryNumber>0</RegistryNumber>
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<MeshHeading><DescriptorName UI="D007093" MajorTopicYN="N">Imidazoles</DescriptorName>
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<MeshHeading><DescriptorName UI="D014934" MajorTopicYN="N">Wood</DescriptorName>
<QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D014961" MajorTopicYN="N">X-Ray Diffraction</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D014990" MajorTopicYN="N">Xylans</DescriptorName>
<QualifierName UI="Q000032" MajorTopicYN="N">analysis</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D014994" MajorTopicYN="N">Xylose</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
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</MeshHeadingList>
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<Keyword MajorTopicYN="N">Bioenergy</Keyword>
<Keyword MajorTopicYN="N">Ethanol</Keyword>
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