FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (9): 186-188.

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Study on Optimum Conditions of Supercritical Fluid Extraction of Ursolic Acid from Follum eriobotryae

 JIANG  Sheng-Yan, CHEN  Li-De, ZHAO  Liang-Zhong, YU  You-Gui, ZHANG  Ru-Xin   

  1. Department of Biological and Chemical Engineering,Shaoyang University,Shaoyang 422000,China
  • Online:2007-09-15 Published:2011-11-22

Abstract: The supercritical carbon dioxide fluid extraction of ursolic acid from Follum eriobotryae was studied,and the extraction process conditions were optimized by the orthogonal test L9(34).The contents of ursolic acid in the extracts were determined directly by the high performance liquid chromatography(HPLC).The result showed that the order of the factors influencing extraction is A> D >C>B(A:extraction temperature,B:extraction pressure,C:presoaker,D:extraction time)and the optimum extraction conditions were extraction temperature 30 ℃,pressure 15 MPa,presoaker 50 ml,extraction time 90 min.On these condition,the average ursolic acid content is 7.83%.

Key words: supercritical CO2 extraction, Follum eriobotryae, ursolic acid, HPLC