Structural characterization of the lignins from sugarcane bagasse and straw
The structure of the lignins of sugarcane bagasse and straw was investigated. The lignins were characterized both in situ and in isolated preparations (Milled-Wood Lignin, MWL, and Cellulolytic Lignin, CEL) by Py-GC/MS and 2D-NMR. It was concluded that they are p-hydroxyphenyl-guaiacyl-syringyl lign...
| Autores: | , , , , , , |
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| Formato: | otro |
| Fecha de publicación: | 2014 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/98709 |
| Acesso em linha: | http://hdl.handle.net/10261/98709 |
| Access Level: | acceso abierto |
| Palavra-chave: | Sugarcane Bagasse Straw Lignin Py-GC/MS Py-TMAH |
| Resumo: | The structure of the lignins of sugarcane bagasse and straw was investigated. The lignins were characterized both in situ and in isolated preparations (Milled-Wood Lignin, MWL, and Cellulolytic Lignin, CEL) by Py-GC/MS and 2D-NMR. It was concluded that they are p-hydroxyphenyl-guaiacyl-syringyl lignins with associated pcoumarates and ferulates. 2D-NMR indicated that the main substructures present are β–O–4´-ethers, followed by β–5´ phenylcoumarans and with lower amounts of β–β´ resinols and β–1´ spirodienones. |
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