金边瑞香鲜花中瑞香素的超临界萃取及条件的优化

Extracting daphnetin from Daphne odora Thunb fresh f1owers by SFE and optimizing extracting conditions

目的 :研究超临界CO2 流体萃取 (SFE)法萃取金边瑞香鲜花中有效成份之一瑞香素的最佳条件。方法 :采用均匀设计方法。以萃取压力、萃取温度、解析压力、解析温度 4个因素为考察条件 ,每个因素设 7个水平进行实验。结果 :在SFE中最佳萃取条件为 :萃取压力 2 0MPa ,萃取温度 39℃ ,解析压力 8MPa ,解析温度 36℃。结论 :本法是一种简便、高选择性、高效率地萃取金边瑞香鲜花有效成份的方法。

Objective:To study the optium condition of extracting daphnetin,one of the effective components from Daphne odora Thunb fresh flowers by the CO 2 supercritical fluid extraction(SFE).Methods:Uniform design method was taken in these 4 factors:extracting pressure,extracting temperature,releasing pressure and releasing temperature.Each factor was tested at 7 levels.Results:The optium conditions in SFE was as follows,extracting pressure 20MPa,extracting temperature 39℃,releasing pressure over 8MPa,releasing temperature 36℃.Conclusion:This method is simple,highly selective and efficient in extracting the effective component from Daphne odora Thunb fresh flowers.