| abstract |
The invention discloses a method for extracting artemisinin. The method comprises the following steps: crushing leaf of Artemisia carvifolia; carrying out enzymatic hydrolysis in an aqueous solution, and carrying out pumping filtration after the enzymatic hydrolysis; carrying out low temperature extraction of the obtained filter cake by using an organic solvent, and concentrating the obtained extract liquid to obtain crude artemisinin; and recrystallizing the crude artemisinin to obtain purified artemisinin. Compared with traditional extraction methods and supercritical extraction methods, the method adopting an enzymatic hydrolysis-reflux two-step extraction technology in the invention has the advantages of simple process, less impurities, low apparatus requirements, and obviously increased extraction rate, and is an environmentally-friendly and efficient artemisinin extraction method. The method is also suitable for extracting sesquiterpene lactones in other medicinal plants. |