Bioconversion of hybrid poplar to ethanol and co-products using an organosolv fractionation process: optimization of process yields.
Identifieur interne : 003E57 ( Main/Exploration ); précédent : 003E56; suivant : 003E58Bioconversion of hybrid poplar to ethanol and co-products using an organosolv fractionation process: optimization of process yields.
Auteurs : Xuejun Pan [Canada] ; Neil Gilkes ; John Kadla ; Kendall Pye ; Shiro Saka ; David Gregg ; Katsunobu Ehara ; Dan Xie ; Dexter Lam ; Jack SaddlerSource :
- Biotechnology and bioengineering [ 0006-3592 ] ; 2006.
Descripteurs français
- KwdFr :
- Bois (MeSH), Composés chimiques organiques (composition chimique), Dépollution biologique de l'environnement (MeSH), Fractionnement chimique (méthodes), Populus (composition chimique), Solvants (composition chimique), Techniques de chimie combinatoire (méthodes), Éthanol (composition chimique), Éthanol (isolement et purification).
- MESH :
- composition chimique : Composés chimiques organiques, Populus, Solvants, Éthanol.
- isolement et purification : Éthanol.
- méthodes : Fractionnement chimique, Techniques de chimie combinatoire.
- Bois, Dépollution biologique de l'environnement.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Ethanol, Organic Chemicals, Solvents.
- chemical , isolation & purification : Ethanol.
- chemistry : Populus.
- methods : Chemical Fractionation, Combinatorial Chemistry Techniques.
- Biodegradation, Environmental, Wood.
Abstract
An organosolv process involving extraction with hot aqueous ethanol has been evaluated for bioconversion of hybrid poplar to ethanol. The process resulted in fractionation of poplar chips into a cellulose-rich solids fraction, an ethanol organosolv lignin (EOL) fraction, and a water-soluble fraction containing hemicellulosic sugars, sugar breakdown products, degraded lignin, and other components. The influence of four independent process variables (temperature, time, catalyst dose, and ethanol concentration) on product yields was analyzed over a broad range using a small composite design and response surface methodology. Center point conditions for the composite design (180 degrees C, 60 min, 1.25% H(2)SO(4), and 60% ethanol), yielded a solids fraction containing approximately 88% of the cellulose present in the untreated poplar. Approximately 82% of the total cellulose in the untreated poplar was recovered as monomeric glucose after hydrolysis of the solids fraction for 24 h using a low enzyme loading (20 filter paper units of cellulase/g cellulose); approximately 85% was recovered after 48 h hydrolysis. Total recovery of xylose (soluble and insoluble) was equivalent to approximately 72% of the xylose present in untreated wood. Approximately 74% of the lignin in untreated wood was recovered as EOL. Other cooking conditions resulted in either similar or inferior product yields although the distribution of components between the various fractions differed markedly. Data analysis generated regression models that describe process responses for any combination of the four variables.
DOI: 10.1002/bit.20905
PubMed: 16523526
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Gilkes</name></author><author><name sortKey="Kadla, John" sort="Kadla, John" uniqKey="Kadla J" first="John" last="Kadla">John Kadla</name></author><author><name sortKey="Pye, Kendall" sort="Pye, Kendall" uniqKey="Pye K" first="Kendall" last="Pye">Kendall Pye</name></author><author><name sortKey="Saka, Shiro" sort="Saka, Shiro" uniqKey="Saka S" first="Shiro" last="Saka">Shiro Saka</name></author><author><name sortKey="Gregg, David" sort="Gregg, David" uniqKey="Gregg D" first="David" last="Gregg">David Gregg</name></author><author><name sortKey="Ehara, Katsunobu" sort="Ehara, Katsunobu" uniqKey="Ehara K" first="Katsunobu" last="Ehara">Katsunobu Ehara</name></author><author><name sortKey="Xie, Dan" sort="Xie, Dan" uniqKey="Xie D" first="Dan" last="Xie">Dan Xie</name></author><author><name sortKey="Lam, Dexter" sort="Lam, Dexter" uniqKey="Lam D" first="Dexter" last="Lam">Dexter Lam</name></author><author><name sortKey="Saddler, Jack" sort="Saddler, Jack" uniqKey="Saddler J" first="Jack" 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University of British Columbia, 2424 Main Mall, Vancouver, BC, Canada V6T 1Z4. xuepan@forestry.ubc.ca</nlm:affiliation><country>Canada</country><wicri:regionArea>Department of Wood Science, University of British Columbia, 2424 Main Mall, Vancouver, BC</wicri:regionArea><orgName type="university">Université de la Colombie-Britannique</orgName><placeName><settlement type="city">Vancouver</settlement><region type="state">Colombie-Britannique </region></placeName></affiliation></author><author><name sortKey="Gilkes, Neil" sort="Gilkes, Neil" uniqKey="Gilkes N" first="Neil" last="Gilkes">Neil Gilkes</name></author><author><name sortKey="Kadla, John" sort="Kadla, John" uniqKey="Kadla J" first="John" last="Kadla">John Kadla</name></author><author><name sortKey="Pye, Kendall" sort="Pye, Kendall" uniqKey="Pye K" first="Kendall" last="Pye">Kendall Pye</name></author><author><name sortKey="Saka, Shiro" sort="Saka, Shiro" uniqKey="Saka S" first="Shiro" last="Saka">Shiro Saka</name></author><author><name sortKey="Gregg, David" sort="Gregg, David" uniqKey="Gregg D" first="David" last="Gregg">David Gregg</name></author><author><name sortKey="Ehara, Katsunobu" sort="Ehara, Katsunobu" uniqKey="Ehara K" first="Katsunobu" last="Ehara">Katsunobu Ehara</name></author><author><name sortKey="Xie, Dan" sort="Xie, Dan" uniqKey="Xie D" first="Dan" last="Xie">Dan Xie</name></author><author><name sortKey="Lam, Dexter" sort="Lam, Dexter" uniqKey="Lam D" first="Dexter" last="Lam">Dexter Lam</name></author><author><name sortKey="Saddler, Jack" sort="Saddler, Jack" uniqKey="Saddler J" first="Jack" last="Saddler">Jack Saddler</name></author></analytic><series><title level="j">Biotechnology and bioengineering</title><idno type="ISSN">0006-3592</idno><imprint><date when="2006" type="published">2006</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biodegradation, Environmental (MeSH)</term><term>Chemical Fractionation (methods)</term><term>Combinatorial Chemistry Techniques (methods)</term><term>Ethanol (chemistry)</term><term>Ethanol (isolation & purification)</term><term>Organic Chemicals (chemistry)</term><term>Populus (chemistry)</term><term>Solvents (chemistry)</term><term>Wood (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Bois (MeSH)</term><term>Composés chimiques organiques (composition chimique)</term><term>Dépollution biologique de l'environnement (MeSH)</term><term>Fractionnement chimique (méthodes)</term><term>Populus (composition chimique)</term><term>Solvants (composition chimique)</term><term>Techniques de chimie combinatoire (méthodes)</term><term>Éthanol (composition chimique)</term><term>Éthanol (isolement et purification)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Ethanol</term><term>Organic Chemicals</term><term>Solvents</term></keywords><keywords scheme="MESH" type="chemical" qualifier="isolation & purification" xml:lang="en"><term>Ethanol</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Composés chimiques organiques</term><term>Populus</term><term>Solvants</term><term>Éthanol</term></keywords><keywords scheme="MESH" qualifier="isolement et purification" xml:lang="fr"><term>Éthanol</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Chemical Fractionation</term><term>Combinatorial Chemistry Techniques</term></keywords><keywords scheme="MESH" qualifier="méthodes" xml:lang="fr"><term>Fractionnement chimique</term><term>Techniques de chimie combinatoire</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biodegradation, Environmental</term><term>Wood</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Bois</term><term>Dépollution biologique de l'environnement</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">An organosolv process involving extraction with hot aqueous ethanol has been evaluated for bioconversion of hybrid poplar to ethanol. The process resulted in fractionation of poplar chips into a cellulose-rich solids fraction, an ethanol organosolv lignin (EOL) fraction, and a water-soluble fraction containing hemicellulosic sugars, sugar breakdown products, degraded lignin, and other components. The influence of four independent process variables (temperature, time, catalyst dose, and ethanol concentration) on product yields was analyzed over a broad range using a small composite design and response surface methodology. Center point conditions for the composite design (180 degrees C, 60 min, 1.25% H(2)SO(4), and 60% ethanol), yielded a solids fraction containing approximately 88% of the cellulose present in the untreated poplar. Approximately 82% of the total cellulose in the untreated poplar was recovered as monomeric glucose after hydrolysis of the solids fraction for 24 h using a low enzyme loading (20 filter paper units of cellulase/g cellulose); approximately 85% was recovered after 48 h hydrolysis. Total recovery of xylose (soluble and insoluble) was equivalent to approximately 72% of the xylose present in untreated wood. Approximately 74% of the lignin in untreated wood was recovered as EOL. Other cooking conditions resulted in either similar or inferior product yields although the distribution of components between the various fractions differed markedly. Data analysis generated regression models that describe process responses for any combination of the four variables.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">16523526</PMID><DateCompleted><Year>2006</Year><Month>09</Month><Day>05</Day></DateCompleted><DateRevised><Year>2019</Year><Month>12</Month><Day>10</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0006-3592</ISSN><JournalIssue CitedMedium="Print"><Volume>94</Volume><Issue>5</Issue><PubDate><Year>2006</Year><Month>Aug</Month><Day>05</Day></PubDate></JournalIssue><Title>Biotechnology and bioengineering</Title><ISOAbbreviation>Biotechnol Bioeng</ISOAbbreviation></Journal><ArticleTitle>Bioconversion of hybrid poplar to ethanol and co-products using an organosolv fractionation process: optimization of process yields.</ArticleTitle><Pagination><MedlinePgn>851-61</MedlinePgn></Pagination><Abstract><AbstractText>An organosolv process involving extraction with hot aqueous ethanol has been evaluated for bioconversion of hybrid poplar to ethanol. The process resulted in fractionation of poplar chips into a cellulose-rich solids fraction, an ethanol organosolv lignin (EOL) fraction, and a water-soluble fraction containing hemicellulosic sugars, sugar breakdown products, degraded lignin, and other components. The influence of four independent process variables (temperature, time, catalyst dose, and ethanol concentration) on product yields was analyzed over a broad range using a small composite design and response surface methodology. Center point conditions for the composite design (180 degrees C, 60 min, 1.25% H(2)SO(4), and 60% ethanol), yielded a solids fraction containing approximately 88% of the cellulose present in the untreated poplar. Approximately 82% of the total cellulose in the untreated poplar was recovered as monomeric glucose after hydrolysis of the solids fraction for 24 h using a low enzyme loading (20 filter paper units of cellulase/g cellulose); approximately 85% was recovered after 48 h hydrolysis. Total recovery of xylose (soluble and insoluble) was equivalent to approximately 72% of the xylose present in untreated wood. Approximately 74% of the lignin in untreated wood was recovered as EOL. Other cooking conditions resulted in either similar or inferior product yields although the distribution of components between the various fractions differed markedly. Data analysis generated regression models that describe process responses for any combination of the four variables.</AbstractText><CopyrightInformation>(c) 2006 Wiley Periodicals, Inc.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Pan</LastName><ForeName>Xuejun</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Department of Wood Science, University of British Columbia, 2424 Main Mall, Vancouver, BC, Canada V6T 1Z4. xuepan@forestry.ubc.ca</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gilkes</LastName><ForeName>Neil</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Kadla</LastName><ForeName>John</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Pye</LastName><ForeName>Kendall</ForeName><Initials>K</Initials></Author><Author ValidYN="Y"><LastName>Saka</LastName><ForeName>Shiro</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Gregg</LastName><ForeName>David</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Ehara</LastName><ForeName>Katsunobu</ForeName><Initials>K</Initials></Author><Author ValidYN="Y"><LastName>Xie</LastName><ForeName>Dan</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Lam</LastName><ForeName>Dexter</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Saddler</LastName><ForeName>Jack</ForeName><Initials>J</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D023362">Evaluation Study</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Biotechnol Bioeng</MedlineTA><NlmUniqueID>7502021</NlmUniqueID><ISSNLinking>0006-3592</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D009930">Organic Chemicals</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012997">Solvents</NameOfSubstance></Chemical><Chemical><RegistryNumber>3K9958V90M</RegistryNumber><NameOfSubstance UI="D000431">Ethanol</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001673" MajorTopicYN="N">Biodegradation, Environmental</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005591" MajorTopicYN="N">Chemical Fractionation</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D020650" MajorTopicYN="N">Combinatorial Chemistry Techniques</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D000431" MajorTopicYN="N">Ethanol</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000302" MajorTopicYN="Y">isolation & purification</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009930" MajorTopicYN="N">Organic Chemicals</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012997" MajorTopicYN="N">Solvents</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="Y">Wood</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2006</Year><Month>3</Month><Day>9</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2006</Year><Month>9</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2006</Year><Month>3</Month><Day>9</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">16523526</ArticleId><ArticleId IdType="doi">10.1002/bit.20905</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Canada</li></country><region><li>Colombie-Britannique </li></region><settlement><li>Vancouver</li></settlement><orgName><li>Université de la Colombie-Britannique</li></orgName></list><tree><noCountry><name sortKey="Ehara, Katsunobu" sort="Ehara, Katsunobu" uniqKey="Ehara K" first="Katsunobu" last="Ehara">Katsunobu Ehara</name><name sortKey="Gilkes, Neil" sort="Gilkes, Neil" uniqKey="Gilkes N" first="Neil" last="Gilkes">Neil Gilkes</name><name sortKey="Gregg, David" sort="Gregg, David" uniqKey="Gregg D" first="David" last="Gregg">David Gregg</name><name sortKey="Kadla, John" sort="Kadla, John" uniqKey="Kadla J" first="John" last="Kadla">John Kadla</name><name sortKey="Lam, Dexter" sort="Lam, Dexter" uniqKey="Lam D" first="Dexter" last="Lam">Dexter Lam</name><name sortKey="Pye, Kendall" sort="Pye, Kendall" uniqKey="Pye K" first="Kendall" last="Pye">Kendall Pye</name><name sortKey="Saddler, Jack" sort="Saddler, Jack" uniqKey="Saddler J" first="Jack" last="Saddler">Jack Saddler</name><name sortKey="Saka, Shiro" sort="Saka, Shiro" uniqKey="Saka S" first="Shiro" last="Saka">Shiro Saka</name><name sortKey="Xie, Dan" sort="Xie, Dan" uniqKey="Xie D" first="Dan" last="Xie">Dan Xie</name></noCountry><country name="Canada"><region name="Colombie-Britannique "><name sortKey="Pan, Xuejun" sort="Pan, Xuejun" uniqKey="Pan X" first="Xuejun" last="Pan">Xuejun 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