花椒籽仁油的超临界CO2萃取

摘要

以碱皂化后的花椒籽为原料,以出油率为指标,采用单因素实验和正交试验优化超临界CO2萃取花椒籽仁油的工艺条件.实验结果表明,在物料粒度40目、物料含水率10％、CO2流量80L/h、萃取压力35 MPa、萃取温度35℃、萃取时间2.5h的条件下,花椒籽仁油的出油率达到19.98％,所得花椒籽仁油(毛油)各项质量指标达到花椒籽油GB 22479-2008的二级标准.%The supercritical CO2 extraction technology of Zanthoxylum bungeanum seed kernel oil ZSKO) was studied by using single factor and orthogonal array design method.The saponificated Zanthoxylum bungeanum seeds were used as raw material and the yield of ZSKO was used as the index.The results showed that the yield of ZSKO reached 19.73％ ±0.25％ when the material granularity was 40 mesh,the moisture content was 10％,the CO2 flow rate was 80 L/h,the extraction pressure was 35MPa,the extraction temperature was 35 ℃ and the extraction time was 2.5h.The quality indexes of ZSKO (crude oil) could reach to the second grade quality based on Chinese national standard (GB 22479-2008).