Preparation method for chemical reference substances of anthraquinone glucoside and stibene glucoside in rheum officinale medicinal material
A technology of stilbene glycoside chemistry and anthraquinone glycosides, which is applied in chemical instruments and methods, organic chemistry, preparation of sugar derivatives, etc., can solve the problems of restricting research and not being able to fully reflect the quality of rhubarb, and achieve simple operation and easy The effect of automatic control and high recovery rate
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Embodiment 1
[0028] Example 1 The preparation method of anthraquinone glycoside and stilbene glycoside chemical reference substance in rhubarb medicinal material comprises the following steps:
[0029] (1) Extraction: After the dried root of rhubarb was crushed to 40 mesh, 500 g was taken, and 2.5 L of ethanol with a mass concentration of 10% was used for heat reflux extraction at 50°C. ; The extract was concentrated under reduced pressure at 60°C and 0.04 MPa until there was no alcohol smell, and the extract concentrate was obtained.
[0030] Among them: rhubarb dried root refers to Tangut rhubarb ( Rheum tanguticum Maxim. ex Balf.).
[0031] (2) Enrichment: put the extract concentrate on a D101 macroporous adsorption resin column, and then use 5 times the column bed volume of deionized water, ethanol with a mass concentration of 30%, ethanol with a mass concentration of 40%, and ethanol with a mass concentration of 50%. ethanol with a mass concentration of 95% ethanol, of which ...
Embodiment 2
[0038] Example 2 The preparation method of anthraquinone glycoside and stilbene glycoside chemical reference substance in rhubarb medicinal material comprises the following steps:
[0039] (1) Extraction: after crushing the dried rhubarb medicinal root to 200 mesh, take 500 g, use 15 L of ethanol with a mass concentration of 95% to carry out heat reflux extraction at 80°C, the extraction times are 3 times, each time for 3 h, and combined to obtain the extraction solution; the extract was concentrated under reduced pressure at 80°C and 0.07MPa until there was no alcohol smell, and the extract concentrate was obtained.
[0040] Among them: the dry root of rhubarb medicinal material refers to the Polygonaceae plant rhubarb palmatum ( Rheum palmatum L.) dry roots.
[0041] (2) Enrichment: put the extract concentrate on the AB-8 macroporous adsorption resin column, and use deionized water with 20 times the volume of the column bed, ethanol with a mass concentration of 30%, e...
Embodiment 3
[0048] Example 3 The preparation method of anthraquinone glycoside and stilbene glycoside chemical reference substance in rhubarb medicinal material comprises the following steps:
[0049] (1) Extraction: After crushing the dried rhubarb medicinal root to 80 mesh, take 500 g, and use 5 L of ethanol with a mass concentration of 70% to carry out heat reflux extraction at 70°C. The extraction times are 3 times, each time for 2 h, and combined to obtain the extraction solution; the extract was concentrated under reduced pressure at 70°C and 0.05 MPa until there was no alcohol smell, and the extract concentrate was obtained.
[0050] Among them: rhubarb medicinal dry root refers to medicinal rhubarb ( Rheum officinale Baill.) dry roots.
[0051] (2) Enrichment: put the extract concentrate on a D3520 macroporous adsorption resin column, and sequentially use 15 times the column bed volume of deionized water, ethanol with a mass concentration of 30%, ethanol with a mass concen...
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