Periodic disorder along ramie cellulose microfibrils.
Identifieur interne : 004342 ( Main/Exploration ); précédent : 004341; suivant : 004343Periodic disorder along ramie cellulose microfibrils.
Auteurs : Yoshiharu Nishiyama [Japon] ; Ung-Jin Kim ; Dae-Young Kim ; Kyoko S. Katsumata ; Roland P. May ; Paul LanganSource :
- Biomacromolecules [ 1525-7797 ]
Descripteurs français
- KwdFr :
- Acides (composition chimique), Boehmeria (composition chimique), Boehmeria (ultrastructure), Cellulose (composition chimique), Cellulose (ultrastructure), Chromatographie sur gel (MeSH), Concentration en ions d'hydrogène (MeSH), Deutérium (composition chimique), Diffusion de rayonnements (MeSH), Hydrogène (composition chimique), Hydrolyse (MeSH), Microfibrilles (composition chimique), Microfibrilles (ultrastructure), Microscopie électronique à balayage (MeSH), Neutrons (MeSH), Paroi cellulaire (composition chimique), Paroi cellulaire (ultrastructure), Viscosité (MeSH).
- MESH :
- composition chimique : Acides, Boehmeria, Cellulose, Deutérium, Hydrogène, Microfibrilles, Paroi cellulaire.
- ultrastructure : Boehmeria, Cellulose, Chromatographie sur gel, Concentration en ions d'hydrogène, Diffusion de rayonnements, Hydrolyse, Microfibrilles, Microscopie électronique à balayage, Neutrons, Paroi cellulaire, Viscosité.
English descriptors
- KwdEn :
- Acids (chemistry), Boehmeria (chemistry), Boehmeria (ultrastructure), Cell Wall (chemistry), Cell Wall (ultrastructure), Cellulose (chemistry), Cellulose (ultrastructure), Chromatography, Gel (MeSH), Deuterium (chemistry), Hydrogen (chemistry), Hydrogen-Ion Concentration (MeSH), Hydrolysis (MeSH), Microfibrils (chemistry), Microfibrils (ultrastructure), Microscopy, Electron, Scanning (MeSH), Neutrons (MeSH), Scattering, Radiation (MeSH), Viscosity (MeSH).
- MESH :
- chemical , chemistry : Acids, Cellulose, Deuterium, Hydrogen.
- chemistry : Boehmeria, Cell Wall, Microfibrils.
- ultrastructure : Boehmeria, Cell Wall, Cellulose, Microfibrils.
- Chromatography, Gel, Hydrogen-Ion Concentration, Hydrolysis, Microscopy, Electron, Scanning, Neutrons, Scattering, Radiation, Viscosity.
Abstract
Small angle neutron scattering studies have been carried out on cellulose fibers from ramie and Populus maximowicii (cotton wood). Labile hydrogen atoms were replaced by deuterium atoms, in water-accessible disordered regions of the fibers, to increase the neutron scattering contrast between the disordered and crystalline regions. A meridional Bragg reflection, corresponding to a longitudinal periodicity of 150 nm, was observed when scattering collected from hydrogenated and deuterated dry ramie fibers was subtracted. No Bragg reflection was observed with the cotton wood fibers, probably because of lower orientation of the microfibrils in the cell wall. The ramie fibers were then subjected to electron microscopy, acid hydrolysis, gel permeation chromatography, and viscosity studies. The leveling off degree of polymerization (LODP) of the hydrolyzed samples matched exactly the periodicity observed in the diffraction studies. The weight loss related to the LODP was only about 1.5%, and thus, the microfibrils can be considered to have 4-5 disordered residues every 300 residues.
DOI: 10.1021/bm025772x
PubMed: 12857086
Affiliations:
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Katsumata</name></author><author><name sortKey="May, Roland P" sort="May, Roland P" uniqKey="May R" first="Roland P" last="May">Roland P. May</name></author><author><name sortKey="Langan, Paul" sort="Langan, Paul" uniqKey="Langan P" first="Paul" last="Langan">Paul Langan</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2003">2003 Jul-Aug</date><idno type="RBID">pubmed:12857086</idno><idno type="pmid">12857086</idno><idno type="doi">10.1021/bm025772x</idno><idno type="wicri:Area/Main/Corpus">004435</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">004435</idno><idno type="wicri:Area/Main/Curation">004435</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">004435</idno><idno type="wicri:Area/Main/Exploration">004435</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Periodic disorder along ramie cellulose microfibrils.</title><author><name sortKey="Nishiyama, Yoshiharu" sort="Nishiyama, Yoshiharu" uniqKey="Nishiyama Y" first="Yoshiharu" last="Nishiyama">Yoshiharu Nishiyama</name><affiliation wicri:level="4"><nlm:affiliation>School of Agricultural and Life Science, The University of Tokyo, Tokyo 113-8657, Japan. nishiy@sbp.fp.a.u-tokyo.ac.jp</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>School of Agricultural and Life Science, The University of Tokyo, Tokyo 113-8657</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName><orgName type="university">Université de Tokyo</orgName><placeName><settlement type="city">Tokyo</settlement><region type="province">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Kim, Ung Jin" sort="Kim, Ung Jin" uniqKey="Kim U" first="Ung-Jin" last="Kim">Ung-Jin Kim</name></author><author><name sortKey="Kim, Dae Young" sort="Kim, Dae Young" uniqKey="Kim D" first="Dae-Young" last="Kim">Dae-Young Kim</name></author><author><name sortKey="Katsumata, Kyoko S" sort="Katsumata, Kyoko S" uniqKey="Katsumata K" first="Kyoko S" last="Katsumata">Kyoko S. Katsumata</name></author><author><name sortKey="May, Roland P" sort="May, Roland P" uniqKey="May R" first="Roland P" last="May">Roland P. May</name></author><author><name sortKey="Langan, Paul" sort="Langan, Paul" uniqKey="Langan P" first="Paul" last="Langan">Paul Langan</name></author></analytic><series><title level="j">Biomacromolecules</title><idno type="ISSN">1525-7797</idno></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acids (chemistry)</term><term>Boehmeria (chemistry)</term><term>Boehmeria (ultrastructure)</term><term>Cell Wall (chemistry)</term><term>Cell Wall (ultrastructure)</term><term>Cellulose (chemistry)</term><term>Cellulose (ultrastructure)</term><term>Chromatography, Gel (MeSH)</term><term>Deuterium (chemistry)</term><term>Hydrogen (chemistry)</term><term>Hydrogen-Ion Concentration (MeSH)</term><term>Hydrolysis (MeSH)</term><term>Microfibrils (chemistry)</term><term>Microfibrils (ultrastructure)</term><term>Microscopy, Electron, Scanning (MeSH)</term><term>Neutrons (MeSH)</term><term>Scattering, Radiation (MeSH)</term><term>Viscosity (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acides (composition chimique)</term><term>Boehmeria (composition chimique)</term><term>Boehmeria (ultrastructure)</term><term>Cellulose (composition chimique)</term><term>Cellulose (ultrastructure)</term><term>Chromatographie sur gel (MeSH)</term><term>Concentration en ions d'hydrogène (MeSH)</term><term>Deutérium (composition chimique)</term><term>Diffusion de rayonnements (MeSH)</term><term>Hydrogène (composition chimique)</term><term>Hydrolyse (MeSH)</term><term>Microfibrilles (composition chimique)</term><term>Microfibrilles (ultrastructure)</term><term>Microscopie électronique à balayage (MeSH)</term><term>Neutrons (MeSH)</term><term>Paroi cellulaire (composition chimique)</term><term>Paroi cellulaire (ultrastructure)</term><term>Viscosité (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Acids</term><term>Cellulose</term><term>Deuterium</term><term>Hydrogen</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Boehmeria</term><term>Cell Wall</term><term>Microfibrils</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Acides</term><term>Boehmeria</term><term>Cellulose</term><term>Deutérium</term><term>Hydrogène</term><term>Microfibrilles</term><term>Paroi cellulaire</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Boehmeria</term><term>Cell Wall</term><term>Cellulose</term><term>Microfibrils</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Chromatography, Gel</term><term>Hydrogen-Ion Concentration</term><term>Hydrolysis</term><term>Microscopy, Electron, Scanning</term><term>Neutrons</term><term>Scattering, Radiation</term><term>Viscosity</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="fr"><term>Boehmeria</term><term>Cellulose</term><term>Chromatographie sur gel</term><term>Concentration en ions d'hydrogène</term><term>Diffusion de rayonnements</term><term>Hydrolyse</term><term>Microfibrilles</term><term>Microscopie électronique à balayage</term><term>Neutrons</term><term>Paroi cellulaire</term><term>Viscosité</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Small angle neutron scattering studies have been carried out on cellulose fibers from ramie and Populus maximowicii (cotton wood). Labile hydrogen atoms were replaced by deuterium atoms, in water-accessible disordered regions of the fibers, to increase the neutron scattering contrast between the disordered and crystalline regions. A meridional Bragg reflection, corresponding to a longitudinal periodicity of 150 nm, was observed when scattering collected from hydrogenated and deuterated dry ramie fibers was subtracted. No Bragg reflection was observed with the cotton wood fibers, probably because of lower orientation of the microfibrils in the cell wall. The ramie fibers were then subjected to electron microscopy, acid hydrolysis, gel permeation chromatography, and viscosity studies. The leveling off degree of polymerization (LODP) of the hydrolyzed samples matched exactly the periodicity observed in the diffraction studies. The weight loss related to the LODP was only about 1.5%, and thus, the microfibrils can be considered to have 4-5 disordered residues every 300 residues.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">12857086</PMID><DateCompleted><Year>2004</Year><Month>08</Month><Day>30</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1525-7797</ISSN><JournalIssue CitedMedium="Print"><Volume>4</Volume><Issue>4</Issue><PubDate><MedlineDate>2003 Jul-Aug</MedlineDate></PubDate></JournalIssue><Title>Biomacromolecules</Title><ISOAbbreviation>Biomacromolecules</ISOAbbreviation></Journal><ArticleTitle>Periodic disorder along ramie cellulose microfibrils.</ArticleTitle><Pagination><MedlinePgn>1013-7</MedlinePgn></Pagination><Abstract><AbstractText>Small angle neutron scattering studies have been carried out on cellulose fibers from ramie and Populus maximowicii (cotton wood). Labile hydrogen atoms were replaced by deuterium atoms, in water-accessible disordered regions of the fibers, to increase the neutron scattering contrast between the disordered and crystalline regions. A meridional Bragg reflection, corresponding to a longitudinal periodicity of 150 nm, was observed when scattering collected from hydrogenated and deuterated dry ramie fibers was subtracted. No Bragg reflection was observed with the cotton wood fibers, probably because of lower orientation of the microfibrils in the cell wall. The ramie fibers were then subjected to electron microscopy, acid hydrolysis, gel permeation chromatography, and viscosity studies. The leveling off degree of polymerization (LODP) of the hydrolyzed samples matched exactly the periodicity observed in the diffraction studies. The weight loss related to the LODP was only about 1.5%, and thus, the microfibrils can be considered to have 4-5 disordered residues every 300 residues.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Nishiyama</LastName><ForeName>Yoshiharu</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>School of Agricultural and Life Science, The University of Tokyo, Tokyo 113-8657, Japan. nishiy@sbp.fp.a.u-tokyo.ac.jp</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Kim</LastName><ForeName>Ung-Jin</ForeName><Initials>UJ</Initials></Author><Author ValidYN="Y"><LastName>Kim</LastName><ForeName>Dae-Young</ForeName><Initials>DY</Initials></Author><Author ValidYN="Y"><LastName>Katsumata</LastName><ForeName>Kyoko S</ForeName><Initials>KS</Initials></Author><Author ValidYN="Y"><LastName>May</LastName><ForeName>Roland P</ForeName><Initials>RP</Initials></Author><Author ValidYN="Y"><LastName>Langan</LastName><ForeName>Paul</ForeName><Initials>P</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Biomacromolecules</MedlineTA><NlmUniqueID>100892849</NlmUniqueID><ISSNLinking>1525-7797</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000143">Acids</NameOfSubstance></Chemical><Chemical><RegistryNumber>7YNJ3PO35Z</RegistryNumber><NameOfSubstance UI="D006859">Hydrogen</NameOfSubstance></Chemical><Chemical><RegistryNumber>9004-34-6</RegistryNumber><NameOfSubstance UI="D002482">Cellulose</NameOfSubstance></Chemical><Chemical><RegistryNumber>AR09D82C7G</RegistryNumber><NameOfSubstance 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MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002850" MajorTopicYN="N">Chromatography, Gel</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003903" MajorTopicYN="N">Deuterium</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006859" MajorTopicYN="N">Hydrogen</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006863" MajorTopicYN="N">Hydrogen-Ion Concentration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006868" MajorTopicYN="N">Hydrolysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D020894" MajorTopicYN="N">Microfibrils</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008855" MajorTopicYN="N">Microscopy, Electron, Scanning</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009502" MajorTopicYN="N">Neutrons</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012542" MajorTopicYN="N">Scattering, Radiation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014783" MajorTopicYN="N">Viscosity</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2003</Year><Month>7</Month><Day>15</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2004</Year><Month>8</Month><Day>31</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2003</Year><Month>7</Month><Day>15</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">12857086</ArticleId><ArticleId IdType="doi">10.1021/bm025772x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Japon</li></country><region><li>Région de Kantō</li></region><settlement><li>Tokyo</li></settlement><orgName><li>Université de Tokyo</li></orgName></list><tree><noCountry><name sortKey="Katsumata, Kyoko S" sort="Katsumata, Kyoko S" uniqKey="Katsumata K" first="Kyoko S" last="Katsumata">Kyoko S. Katsumata</name><name sortKey="Kim, Dae Young" sort="Kim, Dae Young" uniqKey="Kim D" first="Dae-Young" last="Kim">Dae-Young Kim</name><name sortKey="Kim, Ung Jin" sort="Kim, Ung Jin" uniqKey="Kim U" first="Ung-Jin" last="Kim">Ung-Jin Kim</name><name sortKey="Langan, Paul" sort="Langan, Paul" uniqKey="Langan P" first="Paul" last="Langan">Paul Langan</name><name sortKey="May, Roland P" sort="May, Roland P" uniqKey="May R" first="Roland P" last="May">Roland P. May</name></noCountry><country name="Japon"><region name="Région de Kantō"><name sortKey="Nishiyama, Yoshiharu" sort="Nishiyama, Yoshiharu" uniqKey="Nishiyama Y" first="Yoshiharu" last="Nishiyama">Yoshiharu Nishiyama</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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