响应面法优化超声波强化提取薏苡仁酯  

Optimization of Ultrasonic-assisted Extraction of Coix lacryma-jobi Seed Ester Using Response Surface Methodology

作　　者：陈燕[1,2] 王文平[1,2] 邱树毅[1,2] 吴国卿[1,2] 周良友[1] 黄小焕[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550003 [2]贵州省发酵工程与生物制药重点实验室,贵州贵阳550003

出　　处：《食品科学》2010年第8期46-50,共5页Food Science

基　　金：贵州省科学技术基金项目(黔科合J字[2008]2092号);贵州大学引进人才科研项目(贵大人基合字(2009)号)

摘　　要：采用超声波强化溶剂提取法提取薏苡仁酯,在单因素试验基础上,利用响应面法对提取工艺参数进行优化研究。建立料液比、超声时间、超声温度与薏苡仁酯得率之间的数学模型,通过典型性分析得出最优工艺条件为料液比1:10(g/mL)、超声时间50min、超声温度50℃、超声功率300W、超声频率20kHz,在此条件下,薏苡仁酯得率为5.798%。The purpose of the present study was to achieve an optimal ultrasonic-assisted extraction of Coix lacryma-jobi seed ester.On the basis of single factor experiments,a three-variable,three-level central composite design leading to 17 experiments combined with response surface analysis was employed to optimize key technological parameters（namely,ultrasonic treatment time,extraction temperature and material/liquid ratio） affecting Coix lacryma-jobi seed ester yield.In the optimization,a mathematical regression model describing Coix lacryma-jobi seed ester yield as a function of the parameters was created.Results indicated that the optimal values of the parameters were as follows：ultrasonic treatment time 50 min,ultrasonic power 300 W,extraction temperature 50 ℃ and material/liquid ratio 1：10（g/mL）.Under such conditions,an optimal Coix lacryma-jobi seed ester yield of 5.798% was obtained.

关 键 词：薏苡仁酯 超声波提取 响应面法 

分 类 号：S519[农业科学—作物学]