超临界CO_2萃取云南松松子油提取工艺研究

本试验采用超临界CO2萃取云南松松子油,以萃取温度、萃取压力和萃取时间3个因素进行单因素试验,在单因素试验结果的基础上,利用响应面法中的Box-Behnken和中心旋转组合设计对超临界CO2萃取云南松松子油的提取工艺条件进行了优化。各个条件均做3次重复试验,以平均值作为最后结果。试验结果表明:萃取温度、萃取压力和萃取时间3个因素对松子出油率影响都显著。经过验证性试验后,最终得到超临界CO2萃取云南松松子油的最佳工艺条件为:萃取温度36.7℃、萃取压力40.6MPa和萃取时间112.6min,在最佳条件下的出油率24.68%。

Extraction Technology of Pinus yunnanensis Franch Nut Oil by Supercritical CO2 Fluid Extraction

Oil extraction from Pinus yunnanensis Franch seeds with supercritical CO2 fluid was studied. Based on results of single factor experiment, extraction process conditions were optimized by using Box-Behnken and central composite rotatable design. Each condition was repeated three times, and average value was taken as final result. Results showed that temperature, pressure and time of these three factors were significant effects on pine nut oil yield. Optimal operation conditions was supercritical CO2 fluid extraction temperature at 36.7℃, pressure 40.6MPa and time 112.6miu. Oil yield was 24.68% under optimum conditions.