【摘要】 研究利用超声波提取苹果渣中黄酮类化合物的工艺。通过单因素试验考察乙醇浓度、超声波功率、提取温度、处理时间、料液比和浸泡时间对总黄酮提取率的影响。在单因素试验的基础上,利用正交试验确定超声波法提取苹果渣中总黄酮类化合物的最佳工艺条件为:80%乙醇,超声波作用时间30 min,超声波功率480 W,液料比1∶40(g/mL),浸泡时间24 h,超声波温度70℃,提取2次,总黄酮提取率为7.42 mg/g。更多还原

【Abstract】 The process of extraction of flavonoids from apple pomace with ultrasonic wave was studied.The effect of ethanol concentration,ultrasonic power,temperature,treating time,marinating time and ratio of solid to liquid on extracting rate of total flavonoids were investigated by using single factor analysis method.Basing on the experiment of single factor,the optimum extraction conditions of flavonoids from apple pomace using ultrasonic method was studied according to the orthogonal experiment design.The optimal process of extraction of flavonoids from apple pomace with ultrasonic wave were as follows:80 % ethanol,extracting duration 30 min,ultrasonic power 480 W,ratio of solid to liquid 1:40(g/mL),marinated time 24 h,temperature70 ℃,twice ultrasonic extraction p rocess.The extracting rate of total falconoid was 7.42 mg/g.更多还原