Journal article
Quantification of wheat straw lignin structure by comprehensive NMR analysis
Journal of agricultural and food chemistry, Vol.61(46), pp.10848-10857
11/20/2013
Handle:
https://hdl.handle.net/2376/105603
PMID: 24143908
Abstract
A further understanding of the structure of lignin from herbaceous crops is needed for advancing technologies of lignocellulosic biomass processing and utilization. A method was established in this study for analyzing structural motifs found in milled straw lignin (MSL) and cellulase-digested lignin (CEL) isolated from wheat straw by combining quantitative (13)C and HSQC NMR spectral analyses. The results showed that guaiacyl (G) was the predominant unit in wheat straw cell wall lignin over syringyl (S) and hydroxyphenyl (H) units. Up to 8.0 units of tricin were also detected in wheat straw lignin per 100 aromatic rings. Various interunit linkages, including β-O-4, β-5, β-β', β-1, α, β-diaryl ether, and 5-5'/4-O-β' as well as potential lignin-carbohydrate complex (LCC) bonds, were identified and quantified. These findings provide useful information for the development of biofuels and lignin-based materials.
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Details
- Title
- Quantification of wheat straw lignin structure by comprehensive NMR analysis
- Creators
- Jijiao Zeng - Department of Biological Systems Engineering, The Bioprocessing and Bioproduct Engineering Laboratory (BBEL), L. J. Smith 213, Washington State University , Pullman, Washington 99163 United StatesGregory L HelmsXin GaoShulin Chen
- Publication Details
- Journal of agricultural and food chemistry, Vol.61(46), pp.10848-10857
- Academic Unit
- Biological Systems Engineering, Department of; NMR Center
- Publisher
- United States
- Identifiers
- 99900546930801842
- Language
- English
- Resource Type
- Journal article