Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study
Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, E-28040 Madrid, Spain, Instituto de Química, UNAM, Ciudad Universitaria, Coyoacán, CP 04510, México, DF, Instituto de Recursos Naturales y Agrobiología, CSIC, PO Box 1052, E-41080 Seville, Spain, CIT, ENCE, Ctra. Campañó, Ribeiro Vao, E...
| Autores: | , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2007 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/35167 |
| Acceso en línea: | http://hdl.handle.net/10261/35167 |
| Access Level: | acceso abierto |
| Palabra clave: | Lignin structure 2D NMR HSQC HMBC HSQC-TOCSY Analytical pyrolysis Infrared spectroscopy Eucalyptus globulus Kraft pulping Totalli chlorine free bleaching Paper pulp residual lignin |
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Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry studyIbarra, DavidChávez Uribe, María IsabelRencoret, JorgeRío Andrade, José Carlos delGutiérrez Suárez, AnaRomero Sánchez, JavierCamarero, SusanaMartínez, María JesúsJiménez-Barbero, JesúsMartínez, Ángel T.Lignin structure2D NMRHSQCHMBCHSQC-TOCSYAnalytical pyrolysisInfrared spectroscopyEucalyptus globulusKraft pulpingTotalli chlorine free bleachingPaper pulp residual ligninCentro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, E-28040 Madrid, Spain, Instituto de Química, UNAM, Ciudad Universitaria, Coyoacán, CP 04510, México, DF, Instituto de Recursos Naturales y Agrobiología, CSIC, PO Box 1052, E-41080 Seville, Spain, CIT, ENCE, Ctra. Campañó, Ribeiro Vao, E-36157 Pontevedra, Spain; E-mail address: ATMartinez@cib.csic.es (A.T.MartínezChemical modification of eucalypt lignin was investigated during kraft pulping and chlorine-free bleaching by comparing milled-wood lignin, kraft lignin, and enzymatic residual lignins. The syringyl-to-guaiacyl ratio (S/G) from analytical pyrolysis slightly changed during pulping and bleaching (S/G 3-4) but was much higher in the kraft lignin. Semiquantitative HSQC NMR showed that the relative amount of β-O-4' (around 80% side-chains) and resinol-type substructures (around 15%) was only slightly modified during pulping and oxygen delignification. Other minor inter-unit linkages and terminal units were also detected. However, a decrease of resinol substructures (to only 6%) was found after alkaline-peroxide bleaching. The relative amount of surviving linkages in the highly-phenolic kraft lignin was dramatically modified, resinols being predominant. Oxygen delignification did not change inter-unit linkages, but an increase of oxidized units was found in the HSQC aromatic region, in agreement with the higher amount of pyrolysis markers with oxidized side-chains. HMBC NMR correlations showed that the oxidized units after oxygen delignification bore conjugated ketone groups, and conjugated carboxyls after peroxide bleaching. Presence of xylan and lignin-carbohydrate linkage signals was shown by the HSQC spectra of pulp ligninsThe study was funded by the Spanish projects BIO2005-03569, AGL2005-01748 and CTQ2005-08925-C02-02, the EU contracts QLK3-99-590 and FP6-2004-NMP-NI-4-02456, the CSIC project 2006-4-0I-039, and two ENCE-CSIC contracts.Peer reviewedAmerican Chemical SocietyConsejo Superior de Investigaciones Científicas (España)European CommissionMinisterio de Ciencia e Innovación (España)201120112007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/35167reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/351672026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study |
| title |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study |
| spellingShingle |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study Ibarra, David Lignin structure 2D NMR HSQC HMBC HSQC-TOCSY Analytical pyrolysis Infrared spectroscopy Eucalyptus globulus Kraft pulping Totalli chlorine free bleaching Paper pulp residual lignin |
| title_short |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study |
| title_full |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study |
| title_fullStr |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study |
| title_full_unstemmed |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study |
| title_sort |
Lignin modification during Eucalyptus globulus kraft pulping followed by totally chlorine free bleaching: a two dimensional nuclear magnetic resonance, Fourier transform infrared, and pyrolysis-gas chromatography/mass spectrometry study |
| dc.creator.none.fl_str_mv |
Ibarra, David Chávez Uribe, María Isabel Rencoret, Jorge Río Andrade, José Carlos del Gutiérrez Suárez, Ana Romero Sánchez, Javier Camarero, Susana Martínez, María Jesús Jiménez-Barbero, Jesús Martínez, Ángel T. |
| author |
Ibarra, David |
| author_facet |
Ibarra, David Chávez Uribe, María Isabel Rencoret, Jorge Río Andrade, José Carlos del Gutiérrez Suárez, Ana Romero Sánchez, Javier Camarero, Susana Martínez, María Jesús Jiménez-Barbero, Jesús Martínez, Ángel T. |
| author_role |
author |
| author2 |
Chávez Uribe, María Isabel Rencoret, Jorge Río Andrade, José Carlos del Gutiérrez Suárez, Ana Romero Sánchez, Javier Camarero, Susana Martínez, María Jesús Jiménez-Barbero, Jesús Martínez, Ángel T. |
| author2_role |
author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Consejo Superior de Investigaciones Científicas (España) European Commission Ministerio de Ciencia e Innovación (España) |
| dc.subject.none.fl_str_mv |
Lignin structure 2D NMR HSQC HMBC HSQC-TOCSY Analytical pyrolysis Infrared spectroscopy Eucalyptus globulus Kraft pulping Totalli chlorine free bleaching Paper pulp residual lignin |
| topic |
Lignin structure 2D NMR HSQC HMBC HSQC-TOCSY Analytical pyrolysis Infrared spectroscopy Eucalyptus globulus Kraft pulping Totalli chlorine free bleaching Paper pulp residual lignin |
| description |
Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, E-28040 Madrid, Spain, Instituto de Química, UNAM, Ciudad Universitaria, Coyoacán, CP 04510, México, DF, Instituto de Recursos Naturales y Agrobiología, CSIC, PO Box 1052, E-41080 Seville, Spain, CIT, ENCE, Ctra. Campañó, Ribeiro Vao, E-36157 Pontevedra, Spain; E-mail address: ATMartinez@cib.csic.es (A.T.Martínez |
| publishDate |
2007 |
| dc.date.none.fl_str_mv |
2007 2011 2011 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/35167 |
| url |
http://hdl.handle.net/10261/35167 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
American Chemical Society |
| publisher.none.fl_str_mv |
American Chemical Society |
| 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 |
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|
| repository.mail.fl_str_mv |
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1869423127007592448 |
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15.81155 |