The Optimum Process of Extracting Icariin by High Pressure Method

ZHAN Pei-ying1,2,LI Gui-juan1(1.College of Chemical Engineering,Changchun University of Technology,Changchun,Jilin 130012,China;2.Department of Chemistry,Tonghua Normal University,Tonghua,Jilin 134002,China)  

In view of the limitations of traditional extraction methods,without changing its flow,the extraction conditions of icariin were optimized by means of high pressure method.The experiments show that using high pressure method(5-7MPa) extracted icariin is not only a feasible method can effectively improve the yield of target products.In four main factors of the extraction time,extraction frequency,solid-liquid ratio and pressure,the pressure factor has the greatest impact on icariin,followed by the extraction frequency and time,while the solid-liquid ratio has less impact on the experiment.The optimum conditions of extracting icariin were: extraction time 10 minutes,extraction times 2 times,solid-liquid ratio 1:20,reaction temperature 105 ℃,reaction pressure 5MPa.

【Key Words】： icariin extraction pressure
【CateGory Index】： R284.1

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