摘要
研究了以水和乙醇—水混合溶剂提取金莲花中总黄酮的工艺条件,探讨了提取温度、提取时间、料液比、提取次数对总黄酮得率的影响。结果表明,以水为溶剂最佳提取条件为:提取温度80℃、料液比1∶18、提取2次、每次2h,金莲花总黄酮得率为14.0%;以50%乙醇水溶液在其最佳工艺条件提取时,金莲花总黄酮得率为15.3%。
Optimal conditions for the extraction of flavonoids from Trollius chinensis Bunge with water and aqueous ethanol were studied in this paper.The effects of temperature,time and ratio of the weight of Trollius chinensis Bunge to the volume of solvent were investigated in detail.The results showed that the optimal conditions for the extraction with water was 80℃,1∶18 being the raio of the weight of raw material to the volume of water,extraction for 2 times and 2hs for each time.The flavonoids extraction rate was 14.0%.The rate was as high as 15.3% when 50% alcohol was used under its optimal conditions.
出处
《承德石油高等专科学校学报》
CAS
2004年第2期1-3,18,共4页
Journal of Chengde Petroleum College
基金
承德石油高等专科学校科研项目(313)
