超声波提取枣树皮中总黄酮的条件研究  

Study on the Conditions of Total Flavonoids from Jujube Peel by Ultrasonic Extraction

作　　者：王英超[1] 金红[2] 王燕霞[1] 张平平[3] 

机构地区：[1]天津农学院基础科学学院,天津300384 [2]天津农学院农学与资源环境学院,天津300384 [3]天津农学院食品科学与生物工程学院,天津300384

出　　处：《食品研究与开发》2017年第11期52-56,共5页Food Research and Development

基　　金：天津市科技支撑项目(11ZCKFNC01600)

摘　　要：采用超声波法提取金丝小枣枣树皮中的总黄酮。通过单因素试验研究了料液比、乙醇体积分数、提取时间、超声功率和超声温度等因素对总黄酮提取率的影响,并进行了四因素三水平正交试验,确定了枣树皮总黄酮的最佳提取条件。结果表明:最佳提取条件为料液比1∶15(g/m L),乙醇体积分数50%,提取时间50 min,超声功率342 W,提取温度70℃,提取两次。此条件下总黄酮的平均提取率为5.53%。Total flavonoids from jujube peel was extracted by ultrasonic method. Experiments of single factor in- cluding solid-liquid ratio, ethanol concentration, extraction time, ultrasonic power and temperature were done to find the influence of various factors on the extraction rate. Based on single factor experiments, four factor and three level orthogonal test was designed. The results showed that optimum extraction conditions of total flavonoids from jujube peel were solid-liquid ratio 1 ： 15 （g/mL）, 50 % ethanol concentration, extraction time 50 min, power of 342 W, temperature 70 ℃, two step extraction. The average extraction rate of total flavonoids was 5.53 %.

关 键 词：超声波 枣树皮 黄酮 正交试验 

分 类 号：TQ914.1[化学工程]