"In situ" analysis of lignin by 2D-NMR of wood (Eucalyptus globulus and Picea abies) and non-woody (Agave sisalana) plant materials at the gel state
2008
Rencoret, Jorge | Marques, Gisela | Gutiérrez Suárez, Ana | Nieto, Lidia | Jiménez-Barbero, Jesús | Martínez, Ángel T. | Río Andrade, José Carlos del
"In situ" analysis of lignin by 2D-NMR of whole lignocellulosic materials was carried out by swelling in dimethylsulfoxide (DMSO-d6) finely ground samples, and forming a gel in the NMR analysis tube. Solution HSQC-NMR spectra of lignocellulosic materials representative for hardwood (Eucalyptus globulus), softwood (Picea abies) and non-woody plants (Agave sisalana) at the gel state are presented showing signal corresponding to the main plant constituents. The obtained spectra showed both lignin and carbohydrates signals and the assignment of the lignin signals was obtained by comparing the lignocellulose spectra with spectra of MWL isolated from the same materials.
Показать больше [+] Меньше [-]This study has been supported by the Spanish Ministerio de Ciencia y Tecnología (project AGL2005-01748), the CSIC (project 2006-4-0I-039) and the European Commission (BIORENEW project NMP2-CT-2006-026456). J.R. thanks the CSIC for a I3P fellowship.
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