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Study on Formation Mechanism of Lignin Dehydrogenation Polymer-Glucose Complex
Received:January 08, 2020  
DOI：10.11980/j.issn.0254-508X.2020.04.004
Key Words:lignin  dehydrogenation polymer  glucose  cellobiose  13C tracer
Fund Project:国家自然科学基金（项目编号21878070）。
Author NameAffiliationPostcode
XIE Yimin Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province，430068
Hubei Provincial Key Lab of Green Materials for Light Industry, Hubei University of Technology, Wuhan，Hubei Province，430068 		430068
JIANG Chen Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province，430068 430068
LIU Yanchao Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province，430068 430068
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Abstract:In order to elucidate the chemical linkage of lignin to polydextrose and glucose units in the cell wall of plant fibers, the peroxidase-catalyzed dehydrogenation polymerization with carbohydrates of coniferin in the presence of (6-13C)-glucose and cellobiose was investigated in the present research. It was found that lignin dehydrogenation polymer (DHP) could co-polymerized with glucose and (6-13C)-glucose to form DHP-glucose complex and DHP-(6-13C)-glucose complex. The results of 13C NMR analysis showed that lignin substructure unit was linked with C6 position of glucose through benzyl ether bond. In addition, it was also found that a copolymer of lignin precursor and cellobiose, i.e. DHP-cellobiose complex was obtained. The results of 13C NMR analysis indicated that chemical bonds might exist between cellobiose and DHP, such as benzyl ether bonds, benzyl ester bonds and α-acetal bonds.
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