目的 采用超声波辅助法对沙棘果渣黄酮类化合物提取工艺进行研究.方法 对沙棘果渣脱脂后,采用超声波辅助法浸提总黄酮.结果 通过单因素及正交试验得出较优化条件为:乙醇浓度为50％,固液比为1:25(g/mL),提取时间为20 min,超声功率为0.4 kW.在此条件下,测得沙棘果渣提取物中总黄酮含量为6.45 mg/g.结论 经过超声波处理后所提取的总黄酮含量较常规提取下的明显增高.%Objective To investigate the extraction process of flavonoids from seabuckthorn marc by using the ultrasonic assisted method. Methods After defatting the seabuckthorn acanthium, the extraction of total flavonoids by ultrasonic assisted extraction was performed. Results Based on single factor and orthogonal experiments, the obtained optimum conditions were as follows: ethanol concentration was 50％, ratio of solid to liquid was 1:25 (g/mL), extraction time was 20 min, and the ultrasonic power was 0.4 kW. Extraction rate of flavonoids from seabuckthorn marc was 6.45 mg/g under the optimal conditions. Conclusion The total flavonoids content extracted after ultrasonic treatment is significantly higher than that of conventional extraction.
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