Exploring surface characterization and electrostatic property of Hybrid Pennisetum during alkaline sulfite pretreatment for enhanced enzymatic hydrolysability
文献类型： 外文期刊
作者： Yang, Ming 1 ; Wang, Jingfeng 1 ; Hou, Xincun 2 ; Wu, Juying 2 ; Fan, Xifeng 2 ; Jiang, Fan 1 ; Tao, Pan 1 ; Wang, Fan 1 ; P 1 ;
作者机构： 1.Northwest A&F Univ, Coll Forestry, 3 Taicheng Rd, Yangling 712100, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China
关键词： Hybrid Pennisetum;Alkaline sulfite pretreatment;Surface characterization;Electrostatic property;Enzymatic digestibility
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
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收录情况： SCI
摘要： The surface characterization and electrostatic property of Hybrid Pennisetum (HP) after alkaline sulfite pretreatment were explored for enhanced enzymatic hydrolysability. The O/C ratio in HP increased from 0.34 to 0.60, and C1 concentration decreased from 62.5% to 31.6%, indicating that alkaline sulfite pretreatment caused poorer lignin but richer carbohydrate on HP surface. Zeta potential and sulfur element analysis indicated that more enzymes would preferably adsorb on the carbohydrate surface of alkaline sulfite pretreated HP because the lignin was sulfonated, which facilitated the decrease of non-productive adsorption. Glucose yield of alkaline sulfite pretreated HP reached to 100% by synergistic action of cellulase and xylanase in the hydrolysis, which was significantly higher than that of NaOH pretreated, and the concentration of glucose released was 1.52 times higher. The results suggested that alkaline sulfite pretreatment had potential for improving the HP hydrolysability, and the surface characterization and electrostatic property facilitated the enzymatic digestibility.
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