超临界CO_2萃取银杏油工艺研究

Research on the Supercritical CO_2 Extraction of Ginkgo Oil

[目的]为银杏深加工和综合利用探寻一条有效途径,为高附加值、高品质的银杏油工业化生产奠定基础。[方法]采用单因素试验与响应面分析法相结合的方法对超临界CO2萃取银杏油的工艺条件进行了研究。单因素试验研究了原料粒度、萃取压力、萃取温度3个因素对萃取效果的影响,再使用Design Expert6.1.1软件分析,对数据进行优化,优化试验设计为3因素3水平共15个试验点的响应分析试验。[结果]经优化得出银杏油提取最优条件为:粒度为40目,萃取压力为27 MPa,萃取温度为43.5℃,萃取时间为2.5 h,在最优条件下银杏油的得率为7.188%。[结论]该方法可用于下一步的综合、无毒、高效利用。

[ Objective] The efficiency approach of ginkgo processing and integrated utilization was developed for the industrialization of ginkgo oil with high additional value and good-quality. [Method] The supercritical CO2 extraction of the oil in ginkgo was researched with the single factor experiment and the response surface methodology. The effect of the granulated degree of the raw material, extraction press and temperature on oil extraction was analyzed with the single factor experiment and the primary experimental data was optimized through the analysis of Design Expert6.1.1. Then, the optimal design with 3 factors and 3 levels in 15 experimental spots was conducted with the response surface methodology. [ Results] The optimum condition for ginkgo oil was the granulated degree of the raw material, 40 orders; the extraction press, 27 MPa; the extraction temperature, 43.5 % and the extraction time, 2.5 h and the rate of ginkgo oil extraction was 7.188 %. [ Conclusion ] The method could be future developed for the integrated, non-toxicity and high-efficiency utilization of ginkgo oil.