食品科学 ›› 2012, Vol. 33 ›› Issue (2): 39-42.doi: 10.7506/spkx1002-6630-201202009

• 工艺技术 • 上一篇    下一篇

微波辅助玉米芯酸水解提取木糖条件优化

张明霞,呼秀智,庞建光   

  1. 1.河北工程大学理学院 2.河北工程大学农学院
  • 收稿日期:2017-02-16 修回日期:2017-02-16 出版日期:2012-01-25 发布日期:2012-01-16

Optimization of Microwave-Assisted Acid Hydrolysis Conditions for Xylose Preparation from Corncob

ZHANG Ming-xia,HU Xiu-zhi,PANG Jian-guang   

  1. 1. College of Science, Hebei University of Engineering, Handan 056038, China; 2. College of Agriculture, Hebei University of Engineering, Handan 056038, China
  • Received:2017-02-16 Revised:2017-02-16 Online:2012-01-25 Published:2012-01-16

摘要: 研究实验室规模下微波辐照玉米芯酸水解提取木糖的影响因素,通过单因素试验和正交试验,确定最佳反应条件。结果表明:质量分数2%硫酸溶液与玉米芯比10:1(V/m)、微波功率540W条件下酸解16min,可获较高的木糖产率(16.95%)和较好的还原糖收率(37.62%)。相对于传统的蒸煮法,该方法可大大缩短反应时间、降低能耗。

关键词: 玉米芯, 木糖, 微波, 离子交换, 酸水解

Abstract: An investigation was carried out to study the factors affecting the extraction of xylose from corncob by acid hydrolysis under the assistance of microwave radiation at a laboratory scale. Using one-factor-at-a-time and orthogonal array design methods, the optimal conditions for xylose extraction were determined to be 16 min hydrolysis at a H2SO4 solution (2%)/corncob ratio of 10:1 (V/m) when the microwave power was set at 540 W. Under these conditions, the yields of xylose and reducing sugar were 16.95% and 37.62%, respectively. Over the traditional steaming method, the optimized method showed the advantages of shorter extraction time and lower energy consumption.

Key words: corncob, xylose, microwave, ion exchange, acid hydrolysis

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