CO2 supercritical extraction method of rhodiola root glycoside with ethanol as entrainer
A technology of salidroside and entrainer, applied in solid solvent extraction, chemical instruments and methods, preparation of sugar derivatives, etc., can solve the problems of non-selective extraction of target compounds, large industrial pollution, long extraction time, etc. Easy-to-recycle, inexpensive, easy-to-refine effects
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[0012] The optimal process parameter scheme obtained is:
[0013] The dried root of Rhodiola rosea L. was crushed and sieved (0.25 μm) as the material. Load it into an extraction kettle (supercritical extractor: American Applied Separator, model: Spe-ed SFE). The extraction temperature was 60°C, CO 2 When the fluid pressure is 300Par and the entrainer ethanol flow rate is 0.4ml / min, the extraction time is 2h. According to the above method, the extraction rate of salidroside is 1.398%, which is 3.56 times higher than the extraction efficiency by the traditional reflux method (0.39%).
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