2024-03-28T23:47:38Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1593102018-11-06T13:58:06Zcom_10261_15com_10261_6col_10261_898
Lignin structure from Cynara cardunculus in comparison with other herbaceous species
Lourenço, Ana
Rencoret, Jorge
Chemetova, C.
Gominho, J.
Gutiérrez Suárez, Ana
Pereira, Helena
Río Andrade, José Carlos del
European Commission
Ministerio de Economía y Competitividad (España)
Cynara cardunculus
Py-GC/MS
2D-NMR
DFRC’
Lignin isolation
Cardoon lignin was isolated by the Björkman method and its composition and structure were studied by Py-GC/MS, 2D-NMR and DFRC. Cardoon lignin has more guaiacyl (G) than syringyl (S) units (S/G 0.7), and no p-hydroxyphenyl (H) units. The linkages are predominantly of ß¿O¿4¿ alkyl-aryl ether type (70% of all inter-unit linkages), but some condensed linkages such as ß-5¿ phenylcoumarans (14%), ß-ß¿ resinols (7%), ß-1¿ spirodienones (5%) and 5-5¿ dibenzodioxocins (4%) are also present. Lignin is partially acylated at the ¿-OH (12% acylation) by acetate groups, preferentially on syringyl-units. Cardoon lignin is structurally similar to wheat straw lignin, but different from sisal, jute and Mmiscanthus lignins regarding acylation type and degree.
2018-01-19T11:11:58Z
2018-01-19T11:11:58Z
2016-06-28
2018-01-19T11:11:58Z
póster de congreso
14th European Workshop on Lignocellulosics and Pulp June 28-30, 2016 - Autrans, France.
http://hdl.handle.net/10261/159310
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
eng
Sí
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2014-53730-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2014-60764-JIN
closedAccess
International Union of Forest Research Organizations