Separation method of rhubarb-combined anthraquinone and rhubarb tannin
A separation method and a combined technology are applied in the directions of drug combinations, pharmaceutical formulations, medical preparations containing active ingredients, etc., to achieve the effect of reducing tannin content and high utilization value
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Embodiment 1
[0024] (1) 1kg of Chinese medicinal material (root or rhizome) of selected and washed rhubarb, add 15kg of boiling water, decoct for 30 minutes, filter with 80 mesh sieve, and collect the liquid; cut the rhubarb into slices of 0.5mm-2mm, Add 10kg boiling water to extract 3 times, 20 minutes each time, combine all the liquid medicines, add 222g of soy protein powder, let stand for 24 hours, filter with 80 mesh sieve, and dry the precipitate at low temperature to obtain rhubarb tannic acid protein extract to realize rhubarb tanning Quality separation; the supernatant is passed through the processed macroporous resin, eluted with 70% ethanol, the eluate is collected, the ethanol is recovered, and dried to obtain the rhubarb-bound anthraquinone extract.
[0025] (2) Assay method: determination of rhubarb-bound anthraquinone content, refer to the method "Assay of bound anthraquinone" in invention patent application 200510094530.8 "Compound drug granules for the treatment of intestinal ...
Embodiment 2
[0047] 1kg of selected and washed Chinese medicinal materials (root or rhizome) of rhubarb, add 10kg of boiling water, decoct for 20 minutes, filter with 80 mesh, and collect the liquid; cut the rhubarb into slices of 0.5mm-2mm and add 15kg respectively Extract 4 times in boiling water, 15 minutes each time, combine all the medicinal solutions, add 125g of soy protein powder, stand for 24 hours, filter with 80 mesh sieve, and dry the precipitate at low temperature to obtain rhubarb tannic acid protein extract to realize rhubarb tannin separation; The supernatant is passed through the processed macroporous resin and eluted with 60% ethanol, the eluate is collected, the ethanol is recovered, and dried to obtain a rhubarb-bound anthraquinone extract.
Embodiment 3
[0049] Pick and wash the Chinese medicinal material Rhubarb (root or rhizome) 1kg, add 4kg of boiling water, decoct for 15 minutes, filter with 80 mesh sieve, and collect the liquid; cut the rhubarb into slices of 0.5mm-2mm and add 20kg respectively Extract 3 times in boiling water, 30 minutes each time, combine all the medicinal solutions, add 333g of soy protein powder, let stand for 24 hours, filter with an 80 mesh sieve, and dry the precipitate at low temperature to obtain the rhubarb tannin protein extract to realize the separation of rhubarb tannins; The supernatant is passed through the processed macroporous resin and eluted with 80% ethanol, the eluate is collected, the ethanol is recovered, and dried to obtain a rhubarb-bound anthraquinone extract.
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