Influence of lignin level on release of hemicellulose-derived sugars in liquid hot water.
Lignin layers surrounding hemicelluloses and cellulose in the plant cell walls protect them from deconstruction. This recalcitrance to sugar release is a major limitation for cost-effective industrial conversion of lignocellulosic biomass to biofuels. Many literatures had reported the contribution of lignin removal to cellulose accessibility to enzyme, but less to the hemicellulose hydrolysis. Herein, beech xylan with lignin addition, partly delignified sugarcane bagasse (SB), energy sorghum hybrids (ESH) were treated in liquid hot water (LHW) to investigate the effect of lignin on hemicellulose decomposition. The addition of lignin can enhance the low degree of polymerization of xylooligomers production resulted from the acid catalyzed cleavage of lignin-derived acidic products. However, a negative correlation was observed initially between the lignin level and the total xylose yield from ESH. Furthermore, samples with lignin addition or high lignin content had a great resistant to harsh reaction environment, about 93.5% total xylose lost but only 52.3% released due to the lack of lignin protection for the sample with 100% lignin removal.
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: yuqiang@ms.giec.ac.cn.
Qiang
Q
Yu
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
Xinshu
X
Zhuang
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: yuanzh@ms.giec.ac.cn.
Zhenhong
Z
Yuan
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
Xiaoying
X
Kong
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
Wei
W
Qi
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
Wen
W
Wang
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academic of Sciences, Beijing 100039, China.
Qiong
Q
Wang
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
Xuesong
X
Tan
D006358:Hot Temperature; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014990:Xylans / Q000737:chemistry; D014994:Xylose / Q000737:chemistry
D011134:Polysaccharides; D014990:Xylans; D014867:Water; C007916:hemicellulose; D008031:Lignin; D014994:Xylose
Hemicellulose; Hydrolysis; Lignin