A detailed structural characterization of the lignin from wheat straw

The structure of the lignin in wheat straw has been investigated by 2D-NMR and DFRC. It is a phydroxyphenyl-guaiacyl-syringyl lignin (with a H:G:S ratio of 6:64:30) associated with p-coumarates and ferulates. The main substructures present are β–O–4´-ethers (~75%), followed by phenylcoumarans (~11%)...

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Detalles Bibliográficos
Autores: Río Andrade, José Carlos del, Rencoret, Jorge, Prinsen, Pepijn, Gutiérrez Suárez, Ana, Ralph, John, Martínez, Ángel T.
Tipo de recurso: otro
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/98691
Acceso en línea:http://hdl.handle.net/10261/98691
Access Level:acceso abierto
Palabra clave:Lignin
Wheat straw
2D NMR
Py-GC/MS
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repository_id_str
spelling A detailed structural characterization of the lignin from wheat strawRío Andrade, José Carlos delRencoret, JorgePrinsen, PepijnGutiérrez Suárez, AnaRalph, JohnMartínez, Ángel T.LigninWheat straw2D NMRPy-GC/MSThe structure of the lignin in wheat straw has been investigated by 2D-NMR and DFRC. It is a phydroxyphenyl-guaiacyl-syringyl lignin (with a H:G:S ratio of 6:64:30) associated with p-coumarates and ferulates. The main substructures present are β–O–4´-ethers (~75%), followed by phenylcoumarans (~11%), with lower amounts of other units. The lignin is partially acylated (~10%) at the γ-carbon, predominantly with acetates that preferentially acylate guaiacyl (12%) rather than syringyl (1%) units. p-Coumarate esters were barely detectable (<1%) on monomer conjugates released by selectively cleaving β-ethers in DFRC, indicating that they might be preferentially involved in condensed or terminal structures. A major new finding is that the flavone tricin is apparently incorporated into the lignins.This study has been funded by the EU-project LIGNODECO (KBBE-244362) and the Spanish project AGL2011-25379 (co-financed by FEDER funds). Jorge Rencoret thanks the CSIC for a JAE-DOC contract of the program “Junta para la Ampliación de Estudios” co-financed by Fondo Social Europeo (FSE). John Ralph was funded by the DOE Great Lakes Bioenergy Research Center (DOE Office of Science BER DE-FC02-807ER64494).Peer reviewedCSIC - Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142014info:eu-repo/semantics/otherhttp://purl.org/coar/resource_type/c_3248info:eu-repo/semantics/bookParthttp://hdl.handle.net/10261/98691reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/986912026-05-22T06:33:51Z
dc.title.none.fl_str_mv A detailed structural characterization of the lignin from wheat straw
title A detailed structural characterization of the lignin from wheat straw
spellingShingle A detailed structural characterization of the lignin from wheat straw
Río Andrade, José Carlos del
Lignin
Wheat straw
2D NMR
Py-GC/MS
title_short A detailed structural characterization of the lignin from wheat straw
title_full A detailed structural characterization of the lignin from wheat straw
title_fullStr A detailed structural characterization of the lignin from wheat straw
title_full_unstemmed A detailed structural characterization of the lignin from wheat straw
title_sort A detailed structural characterization of the lignin from wheat straw
dc.creator.none.fl_str_mv Río Andrade, José Carlos del
Rencoret, Jorge
Prinsen, Pepijn
Gutiérrez Suárez, Ana
Ralph, John
Martínez, Ángel T.
author Río Andrade, José Carlos del
author_facet Río Andrade, José Carlos del
Rencoret, Jorge
Prinsen, Pepijn
Gutiérrez Suárez, Ana
Ralph, John
Martínez, Ángel T.
author_role author
author2 Rencoret, Jorge
Prinsen, Pepijn
Gutiérrez Suárez, Ana
Ralph, John
Martínez, Ángel T.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Lignin
Wheat straw
2D NMR
Py-GC/MS
topic Lignin
Wheat straw
2D NMR
Py-GC/MS
description The structure of the lignin in wheat straw has been investigated by 2D-NMR and DFRC. It is a phydroxyphenyl-guaiacyl-syringyl lignin (with a H:G:S ratio of 6:64:30) associated with p-coumarates and ferulates. The main substructures present are β–O–4´-ethers (~75%), followed by phenylcoumarans (~11%), with lower amounts of other units. The lignin is partially acylated (~10%) at the γ-carbon, predominantly with acetates that preferentially acylate guaiacyl (12%) rather than syringyl (1%) units. p-Coumarate esters were barely detectable (<1%) on monomer conjugates released by selectively cleaving β-ethers in DFRC, indicating that they might be preferentially involved in condensed or terminal structures. A major new finding is that the flavone tricin is apparently incorporated into the lignins.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/other
http://purl.org/coar/resource_type/c_3248
dc.type.openaire.fl_str_mv info:eu-repo/semantics/bookPart
format other
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/98691
url http://hdl.handle.net/10261/98691
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv CSIC - Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS)
publisher.none.fl_str_mv CSIC - Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS)
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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