Abstract: Orthogonal design was used to choose extraction process so as to ensure the reasonable and reliable extracting condition of total saponin.The result showed that the optimum condition for extraction by ultrasonic method was as follows.Granularity was 80 item, adaptive solvent was H₂O, extraction time was 40 minutes, ratio of solid to liquid was 1:20, and drying temperature was 80℃.

Key words: ultrasonic extraction, Hylocereus undatus, total saponin, the optimum extracting condition

摘要： 利用超声波法,采用正交实验对剑花总皂苷提取工艺进行研究。结果表明,提取剑花总皂苷的最优条件为:粒度80目,最佳溶剂水,超声时间40 min,溶剂挥干温度80℃,料液比1:20。

关键词: 超声波法提取, 剑花, 总皂苷, 最优条件