响应面法优化薏苡仁总多酚超声提取工艺  

Optimization of Ultrasound-assisted Extraction of Total Polyphenol from Coix Seed by Response Surface Methodology

作　　者：李家磊[1] 姚鑫淼[1] 卢淑雯[1] 任传英[1] 吕世祥[1] 张英蕾[1] 

机构地区：[1]黑龙江省农业科学院食品加工研究所,哈尔滨150086

出　　处：《食品工业》2014年第6期40-44,共5页The Food Industry

基　　金：农业部948项目(2012-Z45);黑龙江省博士后资助经费(LBH-Z12243)

摘　　要：以薏苡仁为原料,用乙醇溶液为溶剂,采用超声提取其中的酚类物质。通过单因素试验对乙醇体积分数、液料比、超声时间、超声温度等工艺参数进行研究,并用响应面Box-Behnken试验设计对提取工艺进行优化,建立二次多项数学模型,所得超声提取多酚工艺的最佳工艺参数:乙醇体积分数40%,液料比20∶1(mL/g),超声温度50℃,超声时间40 min。实际测得多酚得率为0.495 mg·g-1,与理论预测值基本相符。The coix seed as raw material was used for exlmcfing polyphcnols with ulWasonic by ethanol. The process parametersincluding ethanol concenWation, ratio of liquid to solid, ultrasonic tcrnpcrature, ultrasonic firnc, wcrc studied through the single factorexpcfimcnk and the op ＂tn＇nization of exWact process were created by response surface experiments with the Box-Bchnkcn design, thena quadratic polynomial regression equation of the forecasting model was set up. The optimal conditions of ulWasonic exWaction wereconcluded as follows ethanol concenWation 40%, ratio of liquid to solid 20 ： 1 （mL/g）, ultrasonic temperature 50 ℃, ulWasonic time40 min. The actual detection value ofpolyphenol yield rate was 0.495 mg.g-1, that is almost equal to the predictable value.

关 键 词：响应面法 薏苡仁 总多酚 超声提取 

分 类 号：TQ461[化学工程—制药化工]