Structural characterization of lignin from triploid of Populus tomentosa Carr.
Identifieur interne : 002D05 ( Main/Exploration ); précédent : 002D04; suivant : 002D06Structural characterization of lignin from triploid of Populus tomentosa Carr.
Auteurs : Tong-Qi Yuan [République populaire de Chine] ; Shao-Ni Sun ; Feng Xu ; Run-Cang SunSource :
- Journal of agricultural and food chemistry [ 1520-5118 ] ; 2011.
Descripteurs français
- KwdFr :
- MESH :
- composition chimique : Lignine, Populus.
- génétique : Populus.
- Spectroscopie infrarouge à transformée de Fourier, Spectroscopie par résonance magnétique, Structure moléculaire, Triploïdie.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Lignin.
- chemistry : Populus.
- genetics : Populus.
- Magnetic Resonance Spectroscopy, Molecular Structure, Spectroscopy, Fourier Transform Infrared, Triploidy.
Abstract
To improve yields while minimizing the extent of mechanical action (just 2 h of planetary ball-milling), the residual wood meal obtained from extraction of milled wood lignin (MWL) was sequentially treated with cellulolytic enzyme and alkali, and the yields of MWL, cellulolytic enzyme lignin (CEL), and alkaline lignin (AL) were 5.4, 23.2, and 16.3%, respectively. The chemical structures of the lignin fractions obtained were characterized by carbohydrate analysis, gel permeation chromatography (GPC), Fourier transform infrared (FT-IR) spectroscopy, and various advanced NMR spectroscopic techniques. The results showed that the lignin isolated as MWL during the early part of ball milling may originate mainly from the middle lamella. This lignin fraction was less degradable and contained more linear hemicelluloses and more C═O in unconjugated groups as well as more phenolic OH groups. Both 1D and 2D NMR spectra analyses confirmed that the lignin in triploid of Populus tomentosa Carr. is GSH-type and partially acylated at the γ-carbon of the side chain. Two-dimensional heteronuclear single-quantum coherence (¹³C-¹H) NMR of MWL, CEL, and AL showed a predominance of β-O-4' aryl ether linkages (81.1-84.5% of total side chains), followed by β-β' resinol-type linkages (12.2-16.4%), and lower amounts of β-5' phenylcoumaran (2.1-2.6%) and β-1' spirodienone-type (0.4-1.4%) linkages. The syringyl (S)/guaiacyl (G) ratios were estimated to be 1.43, 2.29, and 2.83 for MWL, CEL, and AL, respectively.
DOI: 10.1021/jf2003865
PubMed: 21568341
Affiliations:
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Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Institute of Biomass Chemistry and Technology, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Sun, Shao Ni" sort="Sun, Shao Ni" uniqKey="Sun S" first="Shao-Ni" last="Sun">Shao-Ni Sun</name></author><author><name sortKey="Xu, Feng" sort="Xu, Feng" uniqKey="Xu F" first="Feng" last="Xu">Feng Xu</name></author><author><name sortKey="Sun, Run Cang" sort="Sun, Run Cang" uniqKey="Sun R" first="Run-Cang" last="Sun">Run-Cang Sun</name></author></analytic><series><title level="j">Journal of agricultural and food chemistry</title><idno type="eISSN">1520-5118</idno><imprint><date when="2011" type="published">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Lignin (chemistry)</term><term>Magnetic Resonance Spectroscopy (MeSH)</term><term>Molecular Structure (MeSH)</term><term>Populus (chemistry)</term><term>Populus (genetics)</term><term>Spectroscopy, Fourier Transform Infrared (MeSH)</term><term>Triploidy (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Lignine (composition chimique)</term><term>Populus (composition chimique)</term><term>Populus (génétique)</term><term>Spectroscopie infrarouge à transformée de Fourier (MeSH)</term><term>Spectroscopie par résonance magnétique (MeSH)</term><term>Structure moléculaire (MeSH)</term><term>Triploïdie (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Lignin</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Lignine</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Magnetic Resonance Spectroscopy</term><term>Molecular Structure</term><term>Spectroscopy, Fourier Transform Infrared</term><term>Triploidy</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Spectroscopie infrarouge à transformée de Fourier</term><term>Spectroscopie par résonance magnétique</term><term>Structure moléculaire</term><term>Triploïdie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To improve yields while minimizing the extent of mechanical action (just 2 h of planetary ball-milling), the residual wood meal obtained from extraction of milled wood lignin (MWL) was sequentially treated with cellulolytic enzyme and alkali, and the yields of MWL, cellulolytic enzyme lignin (CEL), and alkaline lignin (AL) were 5.4, 23.2, and 16.3%, respectively. The chemical structures of the lignin fractions obtained were characterized by carbohydrate analysis, gel permeation chromatography (GPC), Fourier transform infrared (FT-IR) spectroscopy, and various advanced NMR spectroscopic techniques. The results showed that the lignin isolated as MWL during the early part of ball milling may originate mainly from the middle lamella. This lignin fraction was less degradable and contained more linear hemicelluloses and more C═O in unconjugated groups as well as more phenolic OH groups. Both 1D and 2D NMR spectra analyses confirmed that the lignin in triploid of Populus tomentosa Carr. is GSH-type and partially acylated at the γ-carbon of the side chain. Two-dimensional heteronuclear single-quantum coherence (¹³C-¹H) NMR of MWL, CEL, and AL showed a predominance of β-O-4' aryl ether linkages (81.1-84.5% of total side chains), followed by β-β' resinol-type linkages (12.2-16.4%), and lower amounts of β-5' phenylcoumaran (2.1-2.6%) and β-1' spirodienone-type (0.4-1.4%) linkages. The syringyl (S)/guaiacyl (G) ratios were estimated to be 1.43, 2.29, and 2.83 for MWL, CEL, and AL, respectively.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21568341</PMID><DateCompleted><Year>2011</Year><Month>10</Month><Day>12</Day></DateCompleted><DateRevised><Year>2011</Year><Month>06</Month><Day>15</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1520-5118</ISSN><JournalIssue CitedMedium="Internet"><Volume>59</Volume><Issue>12</Issue><PubDate><Year>2011</Year><Month>Jun</Month><Day>22</Day></PubDate></JournalIssue><Title>Journal of agricultural and food chemistry</Title><ISOAbbreviation>J Agric Food Chem</ISOAbbreviation></Journal><ArticleTitle>Structural characterization of lignin from triploid of Populus tomentosa Carr.</ArticleTitle><Pagination><MedlinePgn>6605-15</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/jf2003865</ELocationID><Abstract><AbstractText>To improve yields while minimizing the extent of mechanical action (just 2 h of planetary ball-milling), the residual wood meal obtained from extraction of milled wood lignin (MWL) was sequentially treated with cellulolytic enzyme and alkali, and the yields of MWL, cellulolytic enzyme lignin (CEL), and alkaline lignin (AL) were 5.4, 23.2, and 16.3%, respectively. The chemical structures of the lignin fractions obtained were characterized by carbohydrate analysis, gel permeation chromatography (GPC), Fourier transform infrared (FT-IR) spectroscopy, and various advanced NMR spectroscopic techniques. The results showed that the lignin isolated as MWL during the early part of ball milling may originate mainly from the middle lamella. This lignin fraction was less degradable and contained more linear hemicelluloses and more C═O in unconjugated groups as well as more phenolic OH groups. Both 1D and 2D NMR spectra analyses confirmed that the lignin in triploid of Populus tomentosa Carr. is GSH-type and partially acylated at the γ-carbon of the side chain. Two-dimensional heteronuclear single-quantum coherence (¹³C-¹H) NMR of MWL, CEL, and AL showed a predominance of β-O-4' aryl ether linkages (81.1-84.5% of total side chains), followed by β-β' resinol-type linkages (12.2-16.4%), and lower amounts of β-5' phenylcoumaran (2.1-2.6%) and β-1' spirodienone-type (0.4-1.4%) linkages. The syringyl (S)/guaiacyl (G) ratios were estimated to be 1.43, 2.29, and 2.83 for MWL, CEL, and AL, respectively.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Yuan</LastName><ForeName>Tong-Qi</ForeName><Initials>TQ</Initials><AffiliationInfo><Affiliation>Institute of Biomass Chemistry and Technology, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sun</LastName><ForeName>Shao-Ni</ForeName><Initials>SN</Initials></Author><Author ValidYN="Y"><LastName>Xu</LastName><ForeName>Feng</ForeName><Initials>F</Initials></Author><Author ValidYN="Y"><LastName>Sun</LastName><ForeName>Run-Cang</ForeName><Initials>RC</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>2011</Year><Month>05</Month><Day>24</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Agric Food Chem</MedlineTA><NlmUniqueID>0374755</NlmUniqueID><ISSNLinking>0021-8561</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>9005-53-2</RegistryNumber><NameOfSubstance UI="D008031">Lignin</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D008031" MajorTopicYN="N">Lignin</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009682" MajorTopicYN="N">Magnetic Resonance Spectroscopy</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015394" MajorTopicYN="N">Molecular Structure</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017550" MajorTopicYN="N">Spectroscopy, Fourier Transform Infrared</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D057885" MajorTopicYN="Y">Triploidy</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>5</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>5</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>10</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21568341</ArticleId><ArticleId IdType="doi">10.1021/jf2003865</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><noCountry><name sortKey="Sun, Run Cang" sort="Sun, Run Cang" uniqKey="Sun R" first="Run-Cang" last="Sun">Run-Cang Sun</name><name sortKey="Sun, Shao Ni" sort="Sun, Shao Ni" uniqKey="Sun S" first="Shao-Ni" last="Sun">Shao-Ni Sun</name><name sortKey="Xu, Feng" sort="Xu, Feng" uniqKey="Xu F" first="Feng" last="Xu">Feng Xu</name></noCountry><country name="République populaire de Chine"><noRegion><name sortKey="Yuan, Tong Qi" sort="Yuan, Tong Qi" uniqKey="Yuan T" first="Tong-Qi" last="Yuan">Tong-Qi Yuan</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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