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杨木碳水化合物自水解特征的P因子调控 被引量:3

P-factor Regulation of Characteristics in the Auto Hydrolysis of Poplar Carbohydrate
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摘要 为了实现对杨木自水解生物炼制中碳水化合物反应的调控,系统研究了不同P因子对杨木自水解体系中pH值、水解率、还原糖、综纤维素、不同单糖以及糠醛产物的影响,结果表明:随着P因子增大至约2 800,体系pH值不断降低至3.6,总水解率和综纤维素脱除率分别高达47%和54%,来自聚戊糖的阿拉伯糖、鼠李糖几乎完全水解,木聚糖大部分水解,葡聚糖脱除率为37%;总水解趋势、综纤维素脱除、聚戊糖脱除过程均可分为快速和慢速脱除两个阶段;P因子和糠醛的产生具有正相关性,分为慢速阶段和快速阶段,戊糖糠醛转化率达40%。P因子对杨木碳水化合物自水解具有调控性。 To regulate carbohydrate reaction in the poplar autohydrolysis of biorefining, the effects of different P-factors on the pH value, hydrolysis rate, reducing sugar, holocellulose, different monosaccharides and furfural product in the poplar autohydrolysis system were studied in detail. The results showed that with the increase of P-factor to about 2 800, the pH value of the system decreased continuously to 3.6, the total hydrolysis rate and holocellulose removal rate reached 47% and 54%, respectively. Arabinose and rhamnose in pentosan were almost completely hydrolyzed, xylan was mostly hydrolyzed, and the removal rate of glucan was 37%(mostly from hemicellulose). The trend of total hydrolysis, holocellulose removal and pentosan removal could be divided into a fast and a following slow removal phase in the process. There was a positive correlation between P-factor and furfural production, which could be divided into a slow and a fast phase, and the conversion of pentose to furfural was 40%. P-factor could regulate the autohydrolysis of carbohydrate in poplar.
作者 王鹏飞 任浩 翟华敏 WANG Pengfei;REN Hao;ZHAI Huamin(Jiangsu Provincial Key Laboratory of Pulp and Paper Technology,Nanjing Forestry University, Nanjing 210037, China;State Key Laboratory of Biomaterials and Green Papermaking, Qilu University of Technology, Jinan 250353, China)
出处 《林产化学与工业》 EI CAS CSCD 北大核心 2019年第4期65-71,共7页 Chemistry and Industry of Forest Products
基金 生物基材料与绿色造纸国家重点实验室开放基金资助项目(KF201803) 国家自然科学基金资助项目(31070524)
关键词 杨木 碳水化合物 P因子 自水解 单糖 poplar carbohydrate P-factor autohydrolysis monosaccharide
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