Separation of Lignocellulose and Preparation of Xylose from Miscanthus lutarioriparius with a Formic Acid Method
文献类型: 外文期刊
作者: Ouyang, Jia 1 ; He, Wen-Qiang 1 ; Li, Qing-Ming 1 ; Chen, Liang 2 ; Wu, Xiao-Fen 2 ; Su, Xiao-Jun 1 ;
作者机构: 1.Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Peoples R China
2.Hunan Acad Agr Sci, Inst Nucl Agr Sci & Space Breeding, Changsha 410125, Peoples R China
3.Hunan Engn Lab Alcohol Fuels Biomass, Changsha 410128, Peoples R China
关键词: Miscanthus lutarioriparius; formic acid method; fractionation; hemicellulose; xylose
期刊名称:APPLIED SCIENCES-BASEL ( 影响因子:2.838; 五年影响因子:2.921 )
ISSN:
年卷期: 2022 年 12 卷 3 期
页码:
收录情况: SCI
摘要: Efficient component separation technology is one of the key ways to improve the efficiency of lignocellulose bioconversion. In this study, the formic acid method was used to separate the components of lignocellulose from Miscanthus lutarioriparius, hemicellulose was degraded into xylose simultaneously, and the composition and structure of the separated components were analyzed. Then, xylose was further purified with activated carbon for decolorization and resins for the removal of formic acid and other monosaccharide impurities. The results showed that formic acid could effectively separate the cellulose, hemicellulose, and lignin of lignocellulose with recoveries of 91.7%, 80.2%, and 85.3%, respectively. Structural analyses revealed that the cellulose and lignin underwent different degrees of formylation during the formic acid treatment, yet their primary structures remained intact, and the crystallinity of cellulose increased significantly. By GC-MS and HPLC analysis, xylose was the main component of hemicellulose extract, accounting for 74.90%. The activated carbon treatment decolorized the xylose extract more than 93.66% and gave a xylose recovery of 88.58%. D301 resin could effectively remove more than 99% of the formic acid residue in xylose. The xylose extract was further purified by removing arabinose and other monosaccharide impurities with Dowex 50wx4 resin, which increased the purity to 95%. The results demonstrated that the formic acid method is an effective method to separate lignocellulose and prepare xylose, and it has broad application prospects in the field of bio-refining lignocellulose resources such as Miscanthus lutarioriparius
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