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A structural characterization of the lignins from sugarcane (Saccharum spp. L) bagasse and straw

AuthorsGuarino Lino, Alessandro; Colodette, Jorge L.; Río Andrade, José Carlos del ; Gutiérrez Suárez, Ana ; Rencoret, Jorge ; Lima, Claudio; Martínez, Ángel T.
Saccharum sp.
Issue Date26-May-2015
PublisherUniversidade Federal de Viçosa
CitationProceedings of the 7th International Colloquium on Eucalyptus Pulp, 2015
AbstractThe 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 p-coumarates 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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