【摘要】 本文主要采用乙醇回流浸提法,从新疆阿克苏产甘草的废渣中提取黄酮类化合物,以芦丁为标准物,采用硼酸-柠檬酸比色法,在紫外区对黄酮含量进行测定。通过正交实验确定了最佳提取工艺,即用75%的乙醇、料液比1:40、提取时间4h、提取温度95℃,并作了回收试验,结果发现,采用乙醇回流浸提法作为生产方法具有较高的准确度和可靠性。更多还原

【Abstract】 The method of extracting flavonoids from waste residue of licorice root by UV-visible recording spectrophotometer was studied. The highest extraction rate of flavonoids can be obtained with 75% aqueous ethanol refluxing 95℃, 4 hours. With the comparison of other methods, the refluxing alcoholic extraction is the best production method. The determination used boric acid-citric acid colorimetry with the standard substance of rutin.更多还原