Direct evidence for α ether linkage between lignin and carbohydrates in wood cell walls
| Autor: | Masato Katahira, Takashi Nagata, Akihiro Kamiya, Hiroshi Nishimura, Takashi Watanabe |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:Medicine
Glucomannan Lignocellulosic biomass Ether 02 engineering and technology 01 natural sciences complex mixtures Article Cell wall chemistry.chemical_compound Residue (chemistry) Lignin Organic chemistry lcsh:Science Multidisciplinary 010405 organic chemistry Polymer characterization lcsh:R fungi technology industry and agriculture food and beverages Nuclear magnetic resonance spectroscopy 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Covalent bond lcsh:Q 0210 nano-technology Solution-state NMR |
| Zdroj: | Scientific Reports, Vol 8, Iss 1, Pp 1-11 (2018) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | Cross-linking between lignin and polysaccharide in plant cell-wall determines physical, chemical, and biological features of lignocellulosic biomass. Since Erdmann’s first report in 1866, numerous studies have suggested the presence of a bond between hemicelluloses and lignin; however, no clear evidence for this interaction has been reported. We describe the first direct proof of covalent bonding between plant cell-wall polysaccharides and lignin. Nuclear magnetic resonance spectroscopy was used to observe the long-range correlations through an α-ether bond between lignin and the primary hydroxyl group of a mannose residue in glucomannan. Complete signal assignment of the cognate structural units was also achieved. Thus, we identified lignin–carbohydrate bonds by complete connectivity analysis from the phenylpropane unit to the carbohydrate moiety. 植物細胞壁中のリグニン・多糖間結合を初めて解明 --バイオマス変換法の開発や持続可能な社会の実現に貢献--. 京都大学プレスリリース. 2018-05-07. |
| Databáze: | OpenAIRE |
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