首页|CAOSA-extracted lignin improves enzymatic hydrolysis of cellulose
CAOSA-extracted lignin improves enzymatic hydrolysis of cellulose
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The conversion of biomass into sugar platform compounds is very important for the biorefinery industry.Pretreatment is essential to the biomass of the sugar platform,however,the lignin obtained by pretreatment,as a key part of lignocellulose,generally has a passive effect on the enzymatic hydrolysis of cellulose into sugars.In this study,p-TsOH(p-toluenesulfonic acid),DES(Deep eutectic solvent)and CAOSA(cooking with active oxygen and solid alkali)pretreatment ways were used to fraction lignin from bamboo biomass.After CAOSA treatment,the hy-drolysis efficiency of the pulp was 95.57%.Moreover,the effect of different treatment methods on lignin properties was studied and the promotion effect of lignin was investigated by adding it to the cellulose enzymatic hydrolysis system.In this work,the results showed that CAOSA-extracted lignin with lower Đ(1.31-1.25)had a better adsorption effect on the enzyme protein.p-TsOH-extracted lignin with a larger S/G ratio enhanced the inhibition of enzymatic hydrolysis.In addition,the presence of-COOHs in lignin could reduce its inhibitory effect on cellulose saccharification.
Sen Ma、Zheng Li、Jonathan Sperry、Xing Tang、Yong Sun、Lu Lin、Jian Liu、Xianhai Zeng
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College of Energy,State Key Laboratory of Physical Chemistry of Solid Surfaces,Xiamen University,Xiamen,361102,China
Fujian Engineering and Research Centre of Clean and High-valued Technologies for Biomass,Xiamen Key Laboratory of Clean and High-valued Utilization of Biomass,Xiamen,361102,China
Centre for Green Chemical Science,University of Auckland,Auckland,1142,New Zealand
国家重点研发计划国家自然科学基金国家自然科学基金Fujian Provincial Key Science and Technology Program of China
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