Pseudo-lignin formation and its impact on enzymatic hydrolysis.
Identifieur interne : 002934 ( Main/Exploration ); précédent : 002933; suivant : 002935Pseudo-lignin formation and its impact on enzymatic hydrolysis.
Auteurs : Fan Hu [États-Unis] ; Seokwon Jung ; Arthur RagauskasSource :
- Bioresource technology [ 1873-2976 ] ; 2012.
Descripteurs français
- KwdFr :
- Acides sulfuriques (pharmacologie), Biotechnologie (méthodes), Cellulase (métabolisme), Cellulose (métabolisme), Facteurs temps (MeSH), Glucose (biosynthèse), Hydrolyse (effets des médicaments et des substances chimiques), Lignine (composition chimique), Lignine (isolement et purification), Lignine (métabolisme), Masse moléculaire (MeSH), Métabolisme glucidique (effets des médicaments et des substances chimiques), Populus (effets des médicaments et des substances chimiques), Populus (métabolisme), Spectroscopie infrarouge à transformée de Fourier (MeSH), bêta-Glucosidase (métabolisme).
- MESH :
- biosynthèse : Glucose.
- composition chimique : Lignine.
- effets des médicaments et des substances chimiques : Hydrolyse, Métabolisme glucidique, Populus.
- isolement et purification : Lignine.
- métabolisme : Cellulase, Cellulose, Lignine, Populus, bêta-Glucosidase.
- méthodes : Biotechnologie.
- pharmacologie : Acides sulfuriques.
- Facteurs temps, Masse moléculaire, Spectroscopie infrarouge à transformée de Fourier.
English descriptors
- KwdEn :
- Biotechnology (methods), Carbohydrate Metabolism (drug effects), Cellulase (metabolism), Cellulose (metabolism), Glucose (biosynthesis), Hydrolysis (drug effects), Lignin (chemistry), Lignin (isolation & purification), Lignin (metabolism), Molecular Weight (MeSH), Populus (drug effects), Populus (metabolism), Spectroscopy, Fourier Transform Infrared (MeSH), Sulfuric Acids (pharmacology), Time Factors (MeSH), beta-Glucosidase (metabolism).
- MESH :
- chemical , biosynthesis : Glucose.
- chemical , chemistry : Lignin.
- chemical , isolation & purification : Lignin.
- chemical , metabolism : Cellulase, Cellulose, Lignin, beta-Glucosidase.
- drug effects : Carbohydrate Metabolism, Hydrolysis, Populus.
- metabolism : Populus.
- methods : Biotechnology.
- chemical , pharmacology : Sulfuric Acids.
- Molecular Weight, Spectroscopy, Fourier Transform Infrared, Time Factors.
Abstract
Pseudo-lignin, which can be broadly defined as aromatic material that yields a positive Klason lignin value and is not derived from native lignin, has been recently reported to form during the dilute acid pretreatment of poplar holocellulose. To investigate the chemistry of pseudo-lignin formation, GPC, FT-IR and 13C NMR were utilized to characterize pseudo-lignin extracted from dilute-acid pretreated α-cellulose and holocellulose. The results showed that pseudo-lignin consisting of carbonyl, carboxylic, aromatic and aliphatic structures was produced from dilute acid pretreated cellulose and hemicellulose. Pseudo-lignin extracted from holocellulose pretreated at different conditions had similar molecular weights (Mn∼1000 g/mol; Mw∼5000 g/mol) and structural features (carbonyl, carboxylic, aromatic and methoxy structures). These characterizations have provided the pseudo-lignin formation mechanisms during pretreatment. The presence and structure of pseudo-lignin is important since pseudo-lignin decreases the enzymatic conversion.
DOI: 10.1016/j.biortech.2012.04.037
PubMed: 22609707
Affiliations:
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(MeSH)</term><term>Glucose (biosynthèse)</term><term>Hydrolyse (effets des médicaments et des substances chimiques)</term><term>Lignine (composition chimique)</term><term>Lignine (isolement et purification)</term><term>Lignine (métabolisme)</term><term>Masse moléculaire (MeSH)</term><term>Métabolisme glucidique (effets des médicaments et des substances chimiques)</term><term>Populus (effets des médicaments et des substances chimiques)</term><term>Populus (métabolisme)</term><term>Spectroscopie infrarouge à transformée de Fourier (MeSH)</term><term>bêta-Glucosidase (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="biosynthesis" xml:lang="en"><term>Glucose</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Lignin</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>Cellulase</term><term>Cellulose</term><term>Lignin</term><term>beta-Glucosidase</term></keywords><keywords scheme="MESH" qualifier="biosynthèse" xml:lang="fr"><term>Glucose</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Lignine</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Carbohydrate Metabolism</term><term>Hydrolysis</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="effets des médicaments et des substances chimiques" xml:lang="fr"><term>Hydrolyse</term><term>Métabolisme glucidique</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="isolement et purification" xml:lang="fr"><term>Lignine</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Biotechnology</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Cellulase</term><term>Cellulose</term><term>Lignine</term><term>Populus</term><term>bêta-Glucosidase</term></keywords><keywords scheme="MESH" qualifier="méthodes" xml:lang="fr"><term>Biotechnologie</term></keywords><keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr"><term>Acides sulfuriques</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Sulfuric Acids</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Molecular Weight</term><term>Spectroscopy, Fourier Transform Infrared</term><term>Time Factors</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Facteurs temps</term><term>Masse moléculaire</term><term>Spectroscopie infrarouge à transformée de Fourier</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Pseudo-lignin, which can be broadly defined as aromatic material that yields a positive Klason lignin value and is not derived from native lignin, has been recently reported to form during the dilute acid pretreatment of poplar holocellulose. To investigate the chemistry of pseudo-lignin formation, GPC, FT-IR and 13C NMR were utilized to characterize pseudo-lignin extracted from dilute-acid pretreated α-cellulose and holocellulose. The results showed that pseudo-lignin consisting of carbonyl, carboxylic, aromatic and aliphatic structures was produced from dilute acid pretreated cellulose and hemicellulose. Pseudo-lignin extracted from holocellulose pretreated at different conditions had similar molecular weights (Mn∼1000 g/mol; Mw∼5000 g/mol) and structural features (carbonyl, carboxylic, aromatic and methoxy structures). These characterizations have provided the pseudo-lignin formation mechanisms during pretreatment. The presence and structure of pseudo-lignin is important since pseudo-lignin decreases the enzymatic conversion.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">22609707</PMID><DateCompleted><Year>2012</Year><Month>10</Month><Day>10</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-2976</ISSN><JournalIssue CitedMedium="Internet"><Volume>117</Volume><PubDate><Year>2012</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Bioresource technology</Title><ISOAbbreviation>Bioresour Technol</ISOAbbreviation></Journal><ArticleTitle>Pseudo-lignin formation and its impact on enzymatic hydrolysis.</ArticleTitle><Pagination><MedlinePgn>7-12</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.biortech.2012.04.037</ELocationID><Abstract><AbstractText>Pseudo-lignin, which can be broadly defined as aromatic material that yields a positive Klason lignin value and is not derived from native lignin, has been recently reported to form during the dilute acid pretreatment of poplar holocellulose. To investigate the chemistry of pseudo-lignin formation, GPC, FT-IR and 13C NMR were utilized to characterize pseudo-lignin extracted from dilute-acid pretreated α-cellulose and holocellulose. The results showed that pseudo-lignin consisting of carbonyl, carboxylic, aromatic and aliphatic structures was produced from dilute acid pretreated cellulose and hemicellulose. Pseudo-lignin extracted from holocellulose pretreated at different conditions had similar molecular weights (Mn∼1000 g/mol; Mw∼5000 g/mol) and structural features (carbonyl, carboxylic, aromatic and methoxy structures). These characterizations have provided the pseudo-lignin formation mechanisms during pretreatment. The presence and structure of pseudo-lignin is important since pseudo-lignin decreases the enzymatic conversion.</AbstractText><CopyrightInformation>Copyright © 2012 Elsevier Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hu</LastName><ForeName>Fan</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>BioEnergy Science Center, School of Chemistry and Biochemistry, Institute of Paper Science and Technology, Georgia Institute of Technology, 500 10th Street, Atlanta, GA 30332, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Jung</LastName><ForeName>Seokwon</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Ragauskas</LastName><ForeName>Arthur</ForeName><Initials>A</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>04</Month><Day>21</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Bioresour Technol</MedlineTA><NlmUniqueID>9889523</NlmUniqueID><ISSNLinking>0960-8524</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D013464">Sulfuric Acids</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 3.2.1.21</RegistryNumber><NameOfSubstance UI="D001617">beta-Glucosidase</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 3.2.1.4</RegistryNumber><NameOfSubstance UI="D002480">Cellulase</NameOfSubstance></Chemical><Chemical><RegistryNumber>IY9XDZ35W2</RegistryNumber><NameOfSubstance UI="D005947">Glucose</NameOfSubstance></Chemical><Chemical><RegistryNumber>O40UQP6WCF</RegistryNumber><NameOfSubstance UI="C033158">sulfuric acid</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001709" MajorTopicYN="N">Biotechnology</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D050260" MajorTopicYN="N">Carbohydrate Metabolism</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName></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="D005947" MajorTopicYN="N">Glucose</DescriptorName><QualifierName UI="Q000096" MajorTopicYN="N">biosynthesis</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006868" MajorTopicYN="N">Hydrolysis</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008031" MajorTopicYN="N">Lignin</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000302" MajorTopicYN="N">isolation & purification</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008970" MajorTopicYN="N">Molecular Weight</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017550" MajorTopicYN="N">Spectroscopy, Fourier Transform Infrared</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013464" MajorTopicYN="N">Sulfuric Acids</DescriptorName><QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013997" MajorTopicYN="N">Time Factors</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001617" MajorTopicYN="N">beta-Glucosidase</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2011</Year><Month>11</Month><Day>21</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2012</Year><Month>04</Month><Day>05</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2012</Year><Month>04</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>5</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>5</Month><Day>23</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>10</Month><Day>12</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">22609707</ArticleId><ArticleId IdType="pii">S0960-8524(12)00642-6</ArticleId><ArticleId IdType="doi">10.1016/j.biortech.2012.04.037</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Géorgie (États-Unis)</li></region></list><tree><noCountry><name sortKey="Jung, Seokwon" sort="Jung, Seokwon" uniqKey="Jung S" first="Seokwon" last="Jung">Seokwon Jung</name><name sortKey="Ragauskas, Arthur" sort="Ragauskas, Arthur" uniqKey="Ragauskas A" first="Arthur" last="Ragauskas">Arthur Ragauskas</name></noCountry><country name="États-Unis"><region name="Géorgie (États-Unis)"><name sortKey="Hu, Fan" sort="Hu, Fan" uniqKey="Hu F" first="Fan" last="Hu">Fan Hu</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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