中心复合设计优化稀酸水解竹黄制备戊糖的研究  

Central Composite Design to Optimize the Hydrolysis Condition of Bamboo Sweeps Hemicellulose

作　　者：别士霞[1,2,3,4,5] 沈葵忠[1,2,3,4,5] 王戈[6] 房桂干[1,2,3,4,5] 韩善明[1,2,3,4] 焦健[1,2,3,4] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]江苏省生物质能源与材料重点实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]生物质化学利用国家工程实验室,江苏南京210042 [5]中国林业科学研究院林业新技术研究所,北京100091 [6]国际竹藤网络中心,北京100091

出　　处：《造纸科学与技术》2014年第2期16-20,共5页Paper Science & Technology

基　　金："十二五"国家科技支撑计划课题(2012BAD23B02)

摘　　要：为充分提取竹黄废屑原料中的半纤维素组分,论文采用中心复合实验设计方法(Central composite design,CCD),以戊糖得率为评价指标,对竹黄稀酸预水解工艺进行了优化。结果表明,各因素的影响顺序为反应温度(X1)>硫酸浓度(X3)>反应时间(X2);固定固液比(w/v)为1∶10时,竹黄半纤维素最佳水解条件为水解温度120.5℃,水解时间2.32h,硫酸质量分数4.66%,在此条件下戊糖收率为78.67%,底物失重率为21.93%。通过验证实验表明,本研究方法对于竹黄半纤维素水解条件优化是可靠的。In this paper the pentose yield were chosen as response variable, central composite design （CCD） was applied to optimize the conditions of dilute sulfuric acid hydrolysis of bamboo sweeps hemicelluloses. The results showed that the influence order of the factors on the yield of pentose was reaction temperature （X） , concentration of H2SO4（ X3） and reaction time（ X2 ） ; When the material and liquid ratio was 1： 10, the optimal hydrolysis conditions were reaction temperature 120. 5℃, reaction time 2.32h and 4. 66% concentration of H2SO4. Under these reaction conditions, the pentose yield was 78.67% and the weight-loss ratio was 21.93%. It was showed that the model can be used to predict the hydrolysis condition of bamboo sweeps hemicelluloses.

关 键 词：中心复合设计 竹黄 稀酸水解 戊糖 

分 类 号：TQ353[化学工程]