摘要
探讨超声波辅助萃取技术在明日叶查尔酮提取应用中的最佳工艺,并测定明日叶中查尔酮的含量。采用单因素实验研究超声功率、乙醇浓度、料液比、提取时间、提取温度对明日叶查尔酮提取率的影响,在此基础上,利用正交试验确定超声波辅助提取明日叶中查尔酮的最佳工艺条件。在所探讨的因素中,对明日叶中查尔酮提取的影响程度为:料液比>乙醇浓度>提取温度>提取时间>超声功率。最佳工艺参数:超声波功率300 W,乙醇浓度为70%,提取温度为50℃,料液比为1∶50,萃取时间为20 min,提取二次后吸光值为1.191,查尔酮得率为7.53 mg/g。明日叶中查尔酮含量较高,优化的提取工艺简便、高效、节能、可行,为明日叶查尔酮的工业化提取提供参考。
To investigate the optimum extraction of chalcone from the Angelica keiskei by ultrasonic wave,and to determine the content of chalcone.According to single factor experiment,the influence of five parameters on the extraction rate of chalcone were investigated,including the ultrasonic power,ethanol concentration,the ratio of material and solvent,the extracting time,the extracting temperature.Then orthogonal experiment was employed to determine the optimum extraction of chalcone from the Angelica keiskei by ultrasonic wave.The influencing order of each factor on the yield of chalcone was solid to liquid ratio extraction temperature concentration of ethanol extraction time ultrasonic power,and the optimal conditions of chalcone extraction from the Angelica keiskei were：ultrasonic power of 300 W,ethanol concentration of 70 %,extraction temperature of 50 ℃,solid to liquid ratio of 1 ∶50,extraction time of 20 min.The Angelica keiskei was extracted twice under those conditions,the chalcone extraction yield was 7.53 mg/g.The cholcone content is high.This extraction technology is simple,efficient,energysaving,feasible,which can provide reference for industrial extraction of chalcone from the Angelica keiskei.
出处
《食品研究与开发》
CAS
北大核心
2014年第8期34-37,共4页
Food Research and Development
关键词
明日叶
查尔酮
超声波提取
正交试验
Angelica keiskei
chalcone
ultrasonic extraction
orthogonal experiment
