Preparation method of high-purity salidroside
A salidroside and high-purity technology, applied in the field of preparation of high-purity salidroside, can solve the problems of organic solvent residue, high energy consumption, low separation efficiency, etc., to improve purity and yield, and improve resource utilization rate, the effect of ensuring the separation effect
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Embodiment 1
[0024] Pretreatment: Take the decoction pieces of Rhodiola angustifolia, crush them into coarse powder; refer to the percolation method of liquid infusion and extract, use 95% ethanol (mass fraction) equal to the weight of the coarse powder, stir and soak for 1 hour;
[0025] Rough extraction: add 65% ethanol solution to the soaked coarse powder, so that the coarse powder is completely immersed in the ethanol solution, soak for 24 hours and then infiltrate, collect the leachate and concentrate it in a vacuum at low temperature, recover the solvent ethanol, and the concentrated solution is the leachate.
[0026] Macroporous resin purification: absorb the supernatant of the leachate after standing still, and use weakly polar AB-8 macroporous resin to adsorb and remove polysaccharides and proteins. The specific steps for removing polysaccharides and proteins are as follows: after loading the supernatant, wash it with purified water until it is colorless, the volume of purified wat...
Embodiment 2
[0030] Pretreatment: Take the decoction pieces of Rhodiola angustifolia, crush them into coarse powder; refer to the percolation method of liquid infusion and extract, use 95% ethanol (mass fraction) equal to the weight of the coarse powder, stir and soak for 1 hour;
[0031] Rough extraction: add 65% ethanol solution to the soaked coarse powder, so that the coarse powder is completely immersed in the ethanol solution, soak for 24 hours and then infiltrate, collect the leachate and concentrate it in a vacuum at low temperature, recover the solvent ethanol, and the concentrated solution is the leachate.
[0032] Macroporous resin purification: absorb the supernatant of the leachate after standing still, and use weakly polar AB-8 macroporous resin to adsorb and remove polysaccharides and proteins. The specific steps for removing polysaccharides and proteins are as follows: after loading the supernatant, wash it with purified water until it is colorless, the volume of purified wat...
Embodiment 3
[0037] Pretreatment: Take the decoction pieces of Rhodiola angustifolia, crush them into coarse powder; refer to the percolation method of liquid infusion and extract, use 95% ethanol (mass fraction) equal to the weight of the coarse powder, stir and soak for 1 hour;
[0038] Rough extraction: add 65% ethanol solution to the soaked coarse powder, so that the coarse powder is completely immersed in the ethanol solution, soak for 24 hours and then infiltrate, collect the leachate and concentrate it in a vacuum at low temperature, recover the solvent ethanol, and the concentrated solution is the leachate.
[0039] Macroporous resin purification: absorb the supernatant of the leachate after standing still, and use weakly polar AB-8 macroporous resin to adsorb and remove polysaccharides and proteins. The specific steps for removing polysaccharides and proteins are as follows: after loading the supernatant, wash it with purified water until it is colorless, the volume of purified water...
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