摘要
以桔梗为原料,对超声辅助提取桔梗皂甙的工艺进行优化研究。利用Box-Behnken的中心组合设计原理及响应面法(RSM)分析建立二次回归模型,对料液比(桔梗粉末:水)、提取时间和提取温度三因素进行优化组合。确定超声辅助提取桔梗皂甙的最佳工艺条件为料液比1:9.75(g/mL)、超声温度35℃、超声时间31min。在该最佳工艺条件下,桔梗皂甙的提取率为4.64%,有效提高了桔梗皂甙的提取率。
Saponins in the roots of Platycodon grandiflorum were extracted with distilled water under the assistance of ultrasonic,and the extraction process was optimized by using response surface analysis based on Box-Behnken design to examine the effects of extraction conditions including material-to-liquid ratio,length of ultrasonic treatment time and extraction temperature on saponin yield,which were reflected by a quadratic regression model.The results showed that the optimal values of the above extraction conditions were as follows：material-to-liquid ratio 1：9.75（g/mL）,length of ultrasonic treatment time 31 min and extraction temperature 35 ℃.Under these conditions,the saponin yield was 4.64%,higher than before the optimization.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2010年第12期49-52,共4页
Food Science
基金
黑龙江省自然科学基金项目(C200509)
哈尔滨市科技局后备学科带头人基金项目(2005AFXXJ026)
关键词
桔梗
皂甙
响应曲面
提取
Platycodon grandiflorum
saponins
response surface analysis
extraction
