FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (2): 130-133.

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Investigation on Solvent Technology Prior Supercritical CO2 Extraction and Crystallization of Andrographolide

 ZHANG  Wen-Cheng, PAN  Jian, XIE  Hui-Ming   

  1. 1.Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China; 2.Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • Online:2007-02-15 Published:2011-12-31

Abstract: Extraction of Andrographis paniculata (Burm.f.) Nees (purity of andrographolide 30%) was investigated for the sorts of solvent, ratio of liquid to solid, extraction temperature, extraction hours and extraction times in technology. The results showed that the ethyl acetone is the optimal solvent with the technology parameters as: ratio of liquid to solid 6:1, extraction temperature50℃, extraction time 3 hours and extraction 3 times. The extract of Andrographis paniculata(Burm.f.) Nees with more than 45% purity of andrographolide and more than 85% extraction ratio can be achieved.

Key words: supercritical CO2, extraction and crystallization, andrographolide, pretreatment, technology