Study on the Extraction of Anthraquinone from Morinda officinalis How by Microwave Method
GAO Qi (College of Chemistry and Environmental Engineering,Shaoguan University,Shaoguan,Guangdong 512005)
[Objective ] The aim of the research was to optimize the extraction technology of anthraquinone from Morinda officinalis How by microwave method.[Method] Using the chloroform as solvent,the anthraquinone was extracted from Chinese medicinal materials by microwave method.With 1,8 dihydroxyanthraquinone as reference substance,the anthraquinone content was determined by spectrophotometry.The influences of material-liquid ratio,extraction power,extraction time on the extraction effect of dihydroxyanthraquinone were studied through orthogonal test.The optimum extraction conditions were confirmed and it was compared with that by bath heating and refluxing method.[Result] The effects of each factor on the extraction effects of dihydroxyanthraquinone in order were as follows: material-liquid ratioextraction powerextraction time.Compared with traditional extraction method,extracting by microwave method had such advantages as fast decomposition rate,little reagent dose,high extraction efficiency and the determined results had good accuracy and precision.The results of t test and F test showed that there was no significant difference between the results of 2 kinds of methods.[Conclusion] The optimum extraction conditions of dihydroxyanthraquinone from M.officinalis by microwave method were as follows: material-liquid ratio of 1∶7,extraction power of 616 W and the extraction time of 8 h.
【CateGory Index】： R284