结果用水加热回流提取法得率最高。
方法：采用乙醇做溶剂，水浴加热回流提取。
并发现用乙醇加热回流提取制备的浸膏，黄酮含量不稳定。
We also find that the content of flavonoids was not same in extract prepared by alcohol under refluxing.
方法：用不同功率和频率的超声仪提取及加热回流提取样品液。
Method: Sample solution were extracted by ultrasonic in different power and frequency and by reflux.
结果供试品溶液制备中以70%甲醇直接加热回流提取，优于提取方法。
Result Refluxing with 70% methanol was better than other ways in sample preparation.
主要研究结果如下：采用加热回流提取法，对白首乌进行乙醇提取，并通过化学萃取得到总甾苷。
The main results of this dissertation were described as following:The roots of C. auriculatum was extracted by ethanol through heating reflux, then purified by chemical extraction.
利用超声波提取脱脂豆粕中的大豆异黄酮，并与加热回流的提取方法进行比较。
Soybean isoflavone were extracted from defatted soybean meal by ultrasonic wave and compared with heating circumfluence method.
加入夹带剂乙醇后白花前胡甲素提取量增加，且超临界流体萃取法明显高于水煎煮和加热回流法。
As cosolvent alcohol was added, the amount of extraction of the praeruptorin A increased, and the amount of SFECO2 extraction was higher than those of decoction and heating reflux.
为了开发莽草酸资源，以高效液相色谱法分析了马尾松、侧柏以及八角茴香中的莽草酸含量，并研究了马尾松中莽草酸的超声提取、加热回流两种提取方法和不同加标水平的回收试验。
To exploit the resources of shikimic acid, the content of shikimic acid in Masson pine leaf, Oriental arborvitae leaf and Star anise, the extraction and recovery experiments were studied by HPLC.
为了开发莽草酸资源，以高效液相色谱法分析了马尾松、侧柏以及八角茴香中的莽草酸含量，并研究了马尾松中莽草酸的超声提取、加热回流两种提取方法和不同加标水平的回收试验。
To exploit the resources of shikimic acid, the content of shikimic acid in Masson pine leaf, Oriental arborvitae leaf and Star anise, the extraction and recovery experiments were studied by HPLC.
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