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Optimization of extraction of pepper oil by supercritical CO2 through response surface methodology
  
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KeyWord:pepper oil  supercritical CO2  extraction  response surface methodology
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SUN Jing，WU Jianhua，GAN Di  
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Abstract:
      In order to obtain the optimal process conditions of supercritical CO2 extraction of pepper oil, the effects of extraction temperature, extraction pressure and extraction time on the extraction rate of pepper oil were investigated by single factor experiment, and optimized by response surface methodology. The results showed that the optimal extraction conditions were obtained as follows: extraction temperature 42?℃, extraction pressure 19.8 MPa and extraction time 90 min. Under these conditions, the average extraction rate of pepper oil was 16%.
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