Structural features affecting biomass enzymatic digestibility.
Identifieur interne : 003799 ( Main/Exploration ); précédent : 003798; suivant : 003800Structural features affecting biomass enzymatic digestibility.
Auteurs : Li Zhu [États-Unis] ; Jonathan P. O'Dwyer ; Vincent S. Chang ; Cesar B. Granda ; Mark T. HoltzappleSource :
- Bioresource technology [ 0960-8524 ] ; 2008.
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Abstract
The rate and extent of enzymatic hydrolysis of lignocellulosic biomass highly depend on enzyme loadings, hydrolysis periods, and structural features resulting from pretreatments. Furthermore, the influence of one structural feature on biomass digestibility varies with the changes in enzyme loading, hydrolysis period and other structural features as well. In this paper, the effects of lignin content, acetyl content, and biomass crystallinity on the 1-, 6-, and 72-h digestibilities with various enzyme loadings were investigated. To eliminate the cross effects among structural features, selective pretreatment techniques were employed to vary one particular structural feature during a pretreatment, while the other two structural features remained unchanged. The digestibility results showed that lignin content and biomass crystallinity dominated digestibility whereas acetyl content had a lesser effect. Lignin removal greatly enhanced the ultimate hydrolysis extent. Crystallinity reduction, however, tremendously increased the initial hydrolysis rate and reduced the hydrolysis time or the amount of enzyme required to attain high digestibility. To some extent, the effects of structural features on digestibility were interrelated. At short hydrolysis periods, lignin content was not important to digestibility when crystallinity was low. Similarly, at long hydrolysis periods, crystallinity was not important to digestibility when lignin content was low.
DOI: 10.1016/j.biortech.2007.07.033
PubMed: 17826088
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Chang</name></author><author><name sortKey="Granda, Cesar B" sort="Granda, Cesar B" uniqKey="Granda C" first="Cesar B" last="Granda">Cesar B. Granda</name></author><author><name sortKey="Holtzapple, Mark T" sort="Holtzapple, Mark T" uniqKey="Holtzapple M" first="Mark T" last="Holtzapple">Mark T. Holtzapple</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2008">2008</date><idno type="RBID">pubmed:17826088</idno><idno type="pmid">17826088</idno><idno type="doi">10.1016/j.biortech.2007.07.033</idno><idno type="wicri:Area/Main/Corpus">003A81</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003A81</idno><idno type="wicri:Area/Main/Curation">003A81</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">003A81</idno><idno type="wicri:Area/Main/Exploration">003A81</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Structural features affecting biomass enzymatic digestibility.</title><author><name sortKey="Zhu, Li" sort="Zhu, Li" uniqKey="Zhu L" first="Li" last="Zhu">Li Zhu</name><affiliation wicri:level="2"><nlm:affiliation>Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Chemical Engineering, Texas A&M University, College Station, TX 77843</wicri:regionArea><placeName><region type="state">Texas</region></placeName></affiliation></author><author><name sortKey="O Dwyer, Jonathan P" sort="O Dwyer, Jonathan P" uniqKey="O Dwyer J" first="Jonathan P" last="O'Dwyer">Jonathan P. O'Dwyer</name></author><author><name sortKey="Chang, Vincent S" sort="Chang, Vincent S" uniqKey="Chang V" first="Vincent S" last="Chang">Vincent S. Chang</name></author><author><name sortKey="Granda, Cesar B" sort="Granda, Cesar B" uniqKey="Granda C" first="Cesar B" last="Granda">Cesar B. Granda</name></author><author><name sortKey="Holtzapple, Mark T" sort="Holtzapple, Mark T" uniqKey="Holtzapple M" first="Mark T" last="Holtzapple">Mark T. Holtzapple</name></author></analytic><series><title level="j">Bioresource technology</title><idno type="ISSN">0960-8524</idno><imprint><date when="2008" type="published">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomass (MeSH)</term><term>Cellulase (metabolism)</term><term>Cellulose (metabolism)</term><term>Crystallization (MeSH)</term><term>Lignin (metabolism)</term><term>Populus (metabolism)</term><term>Wood (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Biomasse (MeSH)</term><term>Bois (métabolisme)</term><term>Cellulase (métabolisme)</term><term>Cellulose (métabolisme)</term><term>Cristallisation (MeSH)</term><term>Lignine (métabolisme)</term><term>Populus (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Cellulase</term><term>Cellulose</term><term>Lignin</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Populus</term><term>Wood</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Bois</term><term>Cellulase</term><term>Cellulose</term><term>Lignine</term><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biomass</term><term>Crystallization</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Biomasse</term><term>Cristallisation</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The rate and extent of enzymatic hydrolysis of lignocellulosic biomass highly depend on enzyme loadings, hydrolysis periods, and structural features resulting from pretreatments. Furthermore, the influence of one structural feature on biomass digestibility varies with the changes in enzyme loading, hydrolysis period and other structural features as well. In this paper, the effects of lignin content, acetyl content, and biomass crystallinity on the 1-, 6-, and 72-h digestibilities with various enzyme loadings were investigated. To eliminate the cross effects among structural features, selective pretreatment techniques were employed to vary one particular structural feature during a pretreatment, while the other two structural features remained unchanged. The digestibility results showed that lignin content and biomass crystallinity dominated digestibility whereas acetyl content had a lesser effect. Lignin removal greatly enhanced the ultimate hydrolysis extent. Crystallinity reduction, however, tremendously increased the initial hydrolysis rate and reduced the hydrolysis time or the amount of enzyme required to attain high digestibility. To some extent, the effects of structural features on digestibility were interrelated. At short hydrolysis periods, lignin content was not important to digestibility when crystallinity was low. Similarly, at long hydrolysis periods, crystallinity was not important to digestibility when lignin content was low.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17826088</PMID><DateCompleted><Year>2008</Year><Month>05</Month><Day>21</Day></DateCompleted><DateRevised><Year>2008</Year><Month>02</Month><Day>26</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0960-8524</ISSN><JournalIssue CitedMedium="Print"><Volume>99</Volume><Issue>9</Issue><PubDate><Year>2008</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Bioresource technology</Title><ISOAbbreviation>Bioresour Technol</ISOAbbreviation></Journal><ArticleTitle>Structural features affecting biomass enzymatic digestibility.</ArticleTitle><Pagination><MedlinePgn>3817-28</MedlinePgn></Pagination><Abstract><AbstractText>The rate and extent of enzymatic hydrolysis of lignocellulosic biomass highly depend on enzyme loadings, hydrolysis periods, and structural features resulting from pretreatments. Furthermore, the influence of one structural feature on biomass digestibility varies with the changes in enzyme loading, hydrolysis period and other structural features as well. In this paper, the effects of lignin content, acetyl content, and biomass crystallinity on the 1-, 6-, and 72-h digestibilities with various enzyme loadings were investigated. To eliminate the cross effects among structural features, selective pretreatment techniques were employed to vary one particular structural feature during a pretreatment, while the other two structural features remained unchanged. The digestibility results showed that lignin content and biomass crystallinity dominated digestibility whereas acetyl content had a lesser effect. Lignin removal greatly enhanced the ultimate hydrolysis extent. Crystallinity reduction, however, tremendously increased the initial hydrolysis rate and reduced the hydrolysis time or the amount of enzyme required to attain high digestibility. To some extent, the effects of structural features on digestibility were interrelated. At short hydrolysis periods, lignin content was not important to digestibility when crystallinity was low. Similarly, at long hydrolysis periods, crystallinity was not important to digestibility when lignin content was low.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Zhu</LastName><ForeName>Li</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>O'Dwyer</LastName><ForeName>Jonathan P</ForeName><Initials>JP</Initials></Author><Author ValidYN="Y"><LastName>Chang</LastName><ForeName>Vincent S</ForeName><Initials>VS</Initials></Author><Author ValidYN="Y"><LastName>Granda</LastName><ForeName>Cesar B</ForeName><Initials>CB</Initials></Author><Author ValidYN="Y"><LastName>Holtzapple</LastName><ForeName>Mark T</ForeName><Initials>MT</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2007</Year><Month>09</Month><Day>07</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Bioresour Technol</MedlineTA><NlmUniqueID>9889523</NlmUniqueID><ISSNLinking>0960-8524</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>11132-73-3</RegistryNumber><NameOfSubstance UI="C036909">lignocellulose</NameOfSubstance></Chemical><Chemical><RegistryNumber>9004-34-6</RegistryNumber><NameOfSubstance UI="D002482">Cellulose</NameOfSubstance></Chemical><Chemical><RegistryNumber>9005-53-2</RegistryNumber><NameOfSubstance UI="D008031">Lignin</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 3.2.1.4</RegistryNumber><NameOfSubstance UI="D002480">Cellulase</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D018533" MajorTopicYN="Y">Biomass</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002480" MajorTopicYN="N">Cellulase</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002482" MajorTopicYN="N">Cellulose</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003460" MajorTopicYN="N">Crystallization</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008031" MajorTopicYN="N">Lignin</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="N">Wood</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2006</Year><Month>01</Month><Day>09</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2007</Year><Month>07</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2007</Year><Month>07</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>9</Month><Day>11</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2008</Year><Month>5</Month><Day>22</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>9</Month><Day>11</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">17826088</ArticleId><ArticleId IdType="pii">S0960-8524(07)00586-X</ArticleId><ArticleId IdType="doi">10.1016/j.biortech.2007.07.033</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Texas</li></region></list><tree><noCountry><name sortKey="Chang, Vincent S" sort="Chang, Vincent S" uniqKey="Chang V" first="Vincent S" last="Chang">Vincent S. Chang</name><name sortKey="Granda, Cesar B" sort="Granda, Cesar B" uniqKey="Granda C" first="Cesar B" last="Granda">Cesar B. Granda</name><name sortKey="Holtzapple, Mark T" sort="Holtzapple, Mark T" uniqKey="Holtzapple M" first="Mark T" last="Holtzapple">Mark T. Holtzapple</name><name sortKey="O Dwyer, Jonathan P" sort="O Dwyer, Jonathan P" uniqKey="O Dwyer J" first="Jonathan P" last="O'Dwyer">Jonathan P. O'Dwyer</name></noCountry><country name="États-Unis"><region name="Texas"><name sortKey="Zhu, Li" sort="Zhu, Li" uniqKey="Zhu L" first="Li" last="Zhu">Li Zhu</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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