微波辅助提取红景天苷

以红景天粉为原料 ,以水为溶剂研究微波提取红景天苷的最佳工艺参数 ,通过单因素试验 ,分别考察了固液比、浸泡时间、微波功率、微波处理时间、搅拌时间、提取级数等因素对提取率的影响 ,探讨了微波提取的机理。得出的最佳工艺条件为 :固液比为 1∶2 0 ,浸泡时间为 1 5h ,微波功率为低 ,微波处理时间为 60s,搅拌时间为 1 5min ,提取级数为二级。在此条件下红景天苷的提取率为 90 %。     

Adsorption and desorption properties of macroreticular resins for salidroside from Rhodiola sachalinensis A. Bor

Four different macroreticular resins (HZ-801, HPD500, HPD700 and DA201) were evaluated for the adsorption properties of the salidroside extracted from Rhodiola sachalinensis A. Bor. The results showed that DA-201 displayed the optimal adsorption and desorption properties. The static and dynamic adsorption capacities of DA-201 were 21.88 and 13.25 mg/ml, respectively. The purity of 13.8% for the partially purified salidroside product, which was higher than the purity of 10% for sales in the markets, was achieved by one-step separation and purification with 50% ethanol.