超声波辅助提取甘蔗渣木聚糖工艺优化

Optimization for Ultrasonic-assisted Extraction of Xylan from Bagasse

以甘蔗渣为原料制备木聚糖,为甘蔗加工副产物的深度开发及工业化利用提供理论和方法参考。采用超声波辅助提取甘蔗渣中木聚糖,在单因素试验的基础上,采用响应曲面法研究了NaOH浓度、液料比、超声波处理时间对木聚糖提取效果的影响。结果表明,超声波辅助提取甘蔗渣中木聚糖的最佳条件为NaOH浓度6%、液料比38∶1(mL/g),超声波处理时间28.4 min。在此条件下实际测得的平均提取率为28.39%。

This research was to extract and produce xylan from bagasse, which provided a theoretical and methodological instruction for development and utilization of sugarcane by-products. On the basis of single factor test, the response surface method was designed to study the effects of NaOH concentration, liquid material rate and ultrasonic processing time on xylan extraction rate. The results showed that the optimum condition for ultrasonic-assisted extraction of xylan was as follows ： NaOH concentration 6 %, liquid material rate 38 ： 1 （mL/g）, and ultrasonic processing time 28.4 min. Under this condition, the actual average extraction rate of xylan was 28.39 %.