摘要
以陕西洛南连翘叶为原料,采用超声波辅助提取连翘叶总黄酮。在超声频率40 k Hz固定条件下,通过单因素试验和正交试验优选连翘叶总黄酮最佳超声提取工艺。结果表明:影响连翘叶中总黄酮提取率的主次因素为时间>温度>料液比>乙醇浓度,其最佳提取工艺条件为:提取时间20 min、提取温度为60℃、料液比1:30(g:m L)、乙醇浓度为65%,该条件下连翘叶总黄酮的提取率为14.60%。
Shangluo Forsythia suspensa＇s leaves were used as raw material, ultrasonic extraction was used to obtain theoptimal extraction conditions. Under fixed conditions：ultrasonic frequency： 40 kHz, single factor experiment and orthogonal experiment was conducted to obtain the optimal extraction conditions. Results showed that the primary and secondary factors affacting flavonoids extraction rate were extraction temperature 〉 extraction time 〉 the solid to liquid ratio〉ethanol concentration , and the optimum extraction conditions were as follows： extraction temperature of 60 ^,extraction time of 20 min,the solid to liquid ratio of 1：30 （g：mL）, and ethanol concentration of 65%.Under the aboveconditions, Flavonoids extraction rate can reach 14.60%.
出处
《商洛学院学报》
2017年第2期42-45,91,共5页
Journal of Shangluo University
关键词
连翘叶
总黄酮
超声波提取
Forsythia suspensa leaves
total flavonoids
ultrasonic extraction
