摘要
以水作为溶剂,研究了超声波辅助法提取玉米芯中多糖的工艺,通过单因素试验和中心组合试验,利用响应面分析,优化了超声波辅助法提取玉米芯中多糖的工艺条件。试验结果表明,最佳提取条件为,粒度100目,pH为5,液料比为20∶1(mL/g)、超声时间15 min、超声温度51℃、提取次数2次。此时实际提取率为7.19%,与预测值7.21%差别不大。
Use ultrasonic to assist extraction ofpolysaccharide of corncob with water as solvent, and optimize of its extractionconditions by response surface. The best results of single factor experiment is： the optimum mesh size is 100 mesh, solid-liq-uid ratio is 20： 1 （mL/g）, ultrasonic time 15 min, ultrasonic temperature 50 ℃, pH is 5, the number of extraction for 2 times.Under this condition the extraction rate obtained in the experiment is 7.19% and the predicted value of 7.21% little difference.
出处
《食品工业》
北大核心
2014年第6期69-72,共4页
The Food Industry
基金
河北省科技厅项目(12227107D1)
河北联合大学大学生创新计划
关键词
玉米芯
多糖
响应面优化法
超声波辅助提取
corncob
polysaccharide
response surface
ultrasonic assisted extraction
