响应面法优化超声辅助碱法提取米糠中膳食纤维  

Optimization of ultrasound-assisted alkali extraction of dietary fiber from rice bran by response surface method

作　　者：匡燕 罗跃中[1] 姚琦 KUANG Yan;LUO Yue-zhong;YAO Qi(Hunan zhuzhou Chemical Vocational Technology College,Zhuzhou 412000,China)

机构地区：[1]湖南化工职业技术学院,株洲412000

出　　处：《武汉轻工大学学报》2023年第1期26-32,共7页Journal of Wuhan Polytechnic University

基　　金：湖南化工职业技术学院校级课题(编号:HNHY202215)。

摘　　要：以米糠为原料,用超声辅助碱法提取米糠中膳食纤维(Dietary Fiber,DF),探讨碱液浓度、超声功率、超声时间、超声温度对DF提取率的影响。用Box-Behnken原理建立数学模型,通过响应面法优化超声辅助碱法提取工艺参数,同时进行样品性能分析。最佳提取工艺为:NaOH浓度0.230 mol/L,超声功率120 W,超声时间40 min,超声温度54℃,在此条件下提取率可达37.65%。DF的持水力为5.3 g/g、持油力为4.6 g/g、膨胀度为5.8 mL/g,明显优于未经处理的膳食纤维,以上结果表明,通过响应面优化可有效提高米糠中膳食纤维提取率,为米糠膳食纤维的研发和推广利用提供理论基础。Using rice bran as raw material,the dietary fiber(DF)was extracted from rice bran by ultrasound-assisted alkali method.The effects of alkali concentration,ultrasonic power,ultrasonic time,and ultrasonic temperature on the extraction rate of DF were investigated.A mathematical model was established based on Box-Behnken principle,and the parameters of ultrasound-assisted alkali extraction were optimized by response surface method.At the same time,the sample properties were analyzed.The optimal extraction process was as follows:NaOH concentration 0.230 mol/l,ultrasonic power 120 W,ultrasonic time 40min,and ultrasonic temperature 54℃.Under these conditions,the extraction yield could reach 37.65%.The water holding capacity,oil holding capacity and swelling capacity of DF were 5.3 g/g,4.6 g/g and 5.8mL/g,respectively,which were significantly better than those of untreated dietary fiber.The results showed that the extraction yield of dietary fiber from rice bran could be effectively improved by response surface optimization,which provided a theoretical basis for the development and promotion of dietary fiber from rice bran.

关 键 词：米糠 膳食纤维 超声辅助碱法 响应面分析 

分 类 号：TS213[轻工技术与工程—粮食、油脂及植物蛋白工程]