Journal
ANALYTICAL CHEMISTRY
Volume 85, Issue 6, Pages 3213-3221Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac303529v
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- Energy Biosciences Institute, University of California, Berkeley, CA, USA
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Lignocellulosic biomass is composed of the polysaccharides cellulose and hemicellulose and the polyphenol lignin. Many current methods for analyzing the structure of lignocelluloses involve a sequential extraction of the material and subsequent analysis of the resulting fractions, which is labor-intensive and time-consuming. The work presented here assesses the dissolution of whole lignocellulosic material, focusing on biomass derived from the perennial bioenergy grass Miscanthus. The solvent dimethylsulfoxide (DMSO)-d(6) containing 1-ethyl-3-methylimidazolium acetate ([Emim]OAc) was able to dissolve lignocellulosic material completely and gave high-resolution 2D heteronuclear single quantum coherence (HSQC) NMR spectra of the entire array of wall polymers. Extrapolated time-zero HSQC was applied using DMSO-d(6)/[Emim]OAc-d(14) and enabled quantitative analysis of structural traits of lignocellulose components.
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