Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood
12 páginas.-- 6 figuras.-- 5 tablas.-- 27 referencias
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| Format: | artículo biblioteca |
| Language: | English |
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Springer
2014-02-15
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| Subjects: | Spruce wood, Picea abies, Lignin– carbohydrate complexes (LCCs), Enzymatic hydrolysis, Analytical pyrolysis, 2D NMR, Lignin structure, |
| Online Access: | http://hdl.handle.net/10261/96828 |
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dig-irnas-es-10261-968282020-11-13T13:29:39Z Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood Du, Xueyu Pérez-Boada, Marta Fernández, Carmen Rencoret, Jorge Río Andrade, José Carlos del Jiménez-Barbero, Jesús Li, Jiebing Gutiérrez Suárez, Ana Martínez, Ángel T. Spruce wood Picea abies Lignin– carbohydrate complexes (LCCs) Enzymatic hydrolysis Analytical pyrolysis 2D NMR Lignin structure 12 páginas.-- 6 figuras.-- 5 tablas.-- 27 referencias Xylan–lignin (XL), glucomannan–lignin (GML) and glucan–lignin (GL) complexes were isolated from spruce wood, hydrolyzed with xylanase or endoglucanase/β-glucosidase, and analyzed by analytical pyrolysis and 2D-NMR. The enzymatic hydrolysis removed most of the polysaccharide moieties in the complexes, and the lignin content and relative abundance of lignin–carbohydrate linkages increased. Analytical pyrolysis confirmed the action of the enzymatic hydrolysis, with strong decreases of levoglucosane and other carbohydrate-derived products. Unexpectedly it also revealed that the hydrolase treatment alters the pattern of lignin breakdown products, resulting in higher amounts of coniferyl alcohol. From the anomeric carbohydrate signals in the 2D-NMR spectra, phenyl glycoside linkages (undetectable in the original complexes) could be identified in the hydrolyzed GML complex. Lower amounts of glucuronosyl and benzyl ether linkages were also observed after the hydrolysis. From the 2D-NMR spectra of the hydrolyzed complexes, it was concluded that the lignin in GML is less condensed than in XL due to its higher content in β-O-4′ ether substructures (62 % of side chains in GML vs 53 % in XL) accompanied by more coniferyl alcohol end units (16 vs 13 %). In contrast, the XL lignin has more pinoresinols (11 vs 6 %) and dibenzodioxocins (9 vs 2 %) than the GML (and both have ~13 % phenylcoumarans and 1 % spirodienones). Direct 2D-NMR analysis of the hydrolyzed GL complex was not possible due to its low solubility. However, after sample acetylation, an even less condensed lignin than in the GML complex was found (with up to 72 % β-O-4′ substructures and only 1 % pinoresinols). The study provides evidence for the existence of structurally different lignins associated to hemicelluloses (xylan and glucomannan) and cellulose in spruce wood and, at the same time, offers information on some of the chemical linkages between the above polymers. This study was supported by the EU projects LIGNODECO (KBBE-2009-3-244362), the ProLignin project of the WoodWisdom-Bioenergy ERA-Net, and the Spanish project AGL 2011-25379. J.R. thanks the CSIC for a JAE-DOC contract, cofinanced by Fondo Social Europeo. Peer reviewed 2014-05-19T08:08:21Z 2014-05-19T08:08:21Z 2014-02-15 artículo http://purl.org/coar/resource_type/c_6501 Planta 239 (5): 1079-1090 (2014) 0032-0935 http://hdl.handle.net/10261/96828 10.1007/s00425-014-2037-y 1432-2048 en Preprint http://dx.doi.org/10.1007/s00425-014-2037-y open Springer |
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Spruce wood Picea abies Lignin– carbohydrate complexes (LCCs) Enzymatic hydrolysis Analytical pyrolysis 2D NMR Lignin structure Spruce wood Picea abies Lignin– carbohydrate complexes (LCCs) Enzymatic hydrolysis Analytical pyrolysis 2D NMR Lignin structure |
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Spruce wood Picea abies Lignin– carbohydrate complexes (LCCs) Enzymatic hydrolysis Analytical pyrolysis 2D NMR Lignin structure Spruce wood Picea abies Lignin– carbohydrate complexes (LCCs) Enzymatic hydrolysis Analytical pyrolysis 2D NMR Lignin structure Du, Xueyu Pérez-Boada, Marta Fernández, Carmen Rencoret, Jorge Río Andrade, José Carlos del Jiménez-Barbero, Jesús Li, Jiebing Gutiérrez Suárez, Ana Martínez, Ángel T. Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood |
| description |
12 páginas.-- 6 figuras.-- 5 tablas.-- 27 referencias |
| format |
artículo |
| topic_facet |
Spruce wood Picea abies Lignin– carbohydrate complexes (LCCs) Enzymatic hydrolysis Analytical pyrolysis 2D NMR Lignin structure |
| author |
Du, Xueyu Pérez-Boada, Marta Fernández, Carmen Rencoret, Jorge Río Andrade, José Carlos del Jiménez-Barbero, Jesús Li, Jiebing Gutiérrez Suárez, Ana Martínez, Ángel T. |
| author_facet |
Du, Xueyu Pérez-Boada, Marta Fernández, Carmen Rencoret, Jorge Río Andrade, José Carlos del Jiménez-Barbero, Jesús Li, Jiebing Gutiérrez Suárez, Ana Martínez, Ángel T. |
| author_sort |
Du, Xueyu |
| title |
Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood |
| title_short |
Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood |
| title_full |
Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood |
| title_fullStr |
Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood |
| title_full_unstemmed |
Analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood |
| title_sort |
analysis of lignin-carbohydrate and lignin-lignin linkages after hydrolase treatment of xylan-lignin, glucomannan-lignin and glucan-lignin complexes from spruce wood |
| publisher |
Springer |
| publishDate |
2014-02-15 |
| url |
http://hdl.handle.net/10261/96828 |
| work_keys_str_mv |
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