目的 优化山柰的超临界CO₂萃取工艺。方法 通过正交试验,采用气相色谱法测定其中苯甲醛的量,采用极差、方差对试验数据进行分析。结果 最佳工艺为萃取温度55℃、萃取压力20MPa、分离压力9MPa,在分离釜Ⅱ中收集主要提取物。结论 萃取温度、分离压力对山柰的超临界CO₂萃取工艺有显著性影响。

Objective To optimize the extracting process for Kaempferia galanga by supercritical CO₂ extraction. Methods GC was used to determine the contents of benzaldehyde. Orthogonal design was used to optimize supercritical CO₂ extraction process. Range and variance analysis were used to deal with the test data. Results The optimum process was established as following: the extracting technique was dealt with under 20 MPa as extracting pressure; 55 ℃ as extracting temperature and 9 MPa as separating pressure. The main extracts were collected in separated kettle Ⅱ. Conclusion The extracting temperature and separating pressure would make remarkably effects on CO₂ extracting resultsof K. galanga.

湖南省中医药管理局中医药科研基金资助项目(204128)