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Chemical Composition Analysis and Isolated Lignin Structural Characterization of 10 Wild Bamboo Species in Guangxi
Received:April 30, 2023  
DOI：10.11980/j.issn.0254-508X.2023.08.007
Key Words:wild bamboo  lignin  structural characterization  chemical composition analysis
Fund Project:国家科技基础资源调查专项（2019FY100900）；广东省自然科学基金（2023A1515011972）。
Author NameAffiliationPostcode
ZHOU Xin College of Light Industry Science and Engineering， State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
LU Jinwen College of Light Industry Science and Engineering， State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
YUE Fengxia* College of Light Industry Science and Engineering， State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
REN Junli College of Light Industry Science and Engineering， State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
LIU Chuanfu College of Light Industry Science and Engineering， State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
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Abstract:In this study， the chemical composition and isolated lignin structure of 10 wild bamboo raw materials from Guangxi province were characterized by the National Renewable Energy Laboratory （NREL） method， thioacidolysis， gel permeation chromatography （GPC）， two-dimensional nuclear magnetic （2D NMR）， etc. The results showed that the cellulose contents of 10 wild bamboo species were between 37.09%~44.21%， and the hemicellulose and lignin contents were 17.16%~23.32% and 21.73%~25.81%， respectively. All lignin preparations were GSH-type， and the content of the H-type unit was below 5%. Three major inter-unit linkages present in all kinds of bamboo’s lignin are β-O-4， β-β， and β-5， of which the β-O-4 linkages accounted for more than 80% of the main side-chain linkages and accounted for 47.41%~52.07% of the total aromatics.In addition， ferulic acid and p-coumarin acid were also found in the aromatic region. In summary， it suggested that the Bambusapervariabilis， among these bamboo samples，was the most suitable type of bamboo to be used in biorefinery， lignin degradation， and pulping and papermaking， followed by the Schizostachyumauriculatum and Dendrocalamopsis.
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