Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (7): 67-71.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Ultrasonic-Assisted Supercritical CO2 Extraction of Volatile Oil from Compound Recipe of Clove and Cinnamon

Li Chao1  Yang Ri-fu2  Fu Xue-feng3  Qiu Tai-qiu1  Fan Xiao-dan1     

  1. 1. School of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. School of Physics, South China University of Technology, Guangzhou 510640, Guangdong, China; 3. University Hospital, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-06-18 Revised:2008-04-02 Online:2008-07-25 Published:2008-07-25
  • Contact: 丘泰球（1941-），男，教授，博士生导师，主要从事超声提取和超临界萃取研究． E-mail:tqqiu@scut．edu.cn
  • About author:李超（1979-），男，博士生，主要从事天然产物提取分离研究．E-mail：chaoge002@163．com．
  • Supported by:

    广东省科技计划资助项目（2006835605002）;广州市科技计划资助项目（200723-E5131）

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Abstract:

The optimal parameters for the ultrasound-assisted supercritical CO2 extraction （USCE） of volatile oil from the compound recipe of clove and cinnamon were determined by orthogonal experiments, and the corresponding dynamic models were established based on the model equation deduced from the differential mass balance and Fick＇s first law. By analyzing the dynamic models of USCE and supercritical CO2 extraction （SCE） , the enhancement effect of ultrasonic on SCE was revealed. Moreover, by means of GC-MS and GC analyses, the yields of the volatile oil respectively with simultaneous and individual extractions were compared. The results show that, in the optimal conditions, namely an extraction pressure of 25MPa, an extraction time of 4. 0h, a CO2 flowrate of 3. 0L/h and an ultrasonic power density of 60 W/L, the yield of the volatile oil reaches 11.60% , thus revealing the enhancement of SCE by ultrasonic. It is also found that the yield of volatile oil from the compound recipe of clove and cinnamon is greater than the sum of the yields of individual extractions of clove and cinnamon.

Key words: ultrasonic, supercritical CO2 extraction, clove, cinnamon, volatile oil, simultaneous extraction, individual extraction