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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 Name | Affiliation | Postcode | | 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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