Document Detail


Quantification of wheat straw lignin structure by comprehensive NMR analysis.
MedLine Citation:
PMID:  24143908     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A further understanding of lignin structure 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 13C and HSQC NMR spectral analysis. 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 inter-unit linkages, including β-O-4, β-5, β¬- β', β-1, α, β-diaryl ether, 5-5'/4-O-β' as well as potential lignin-carbohydrate complex (LCC) bonds, were identified and quantified. These findings provide useful information for development of bio-fuels and lignin based materials.
Authors:
Jijiao Zeng; Gregory L Helms; Xin Gao; Shulin Chen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-10-22
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2013 Oct 
Date Detail:
Created Date:  2013-10-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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