Method for extracting astragaloside and astragalus polysaccharide under assistance of steam explosion
A technology of astragaloside and auxiliary extraction, which is applied in the direction of pharmaceutical formulas, medical preparations containing active ingredients, plant raw materials, etc., can solve the problems of low extraction efficiency of active ingredients, increase of extraction cost, limited degree of damage, etc., and shorten the extraction time , Improve the dissolution efficiency, improve the effect of porous characteristics
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[0008] Example 1:
[0009] Cut the astragalus medicinal material to 3~5 cm, add water according to the mass ratio of absolute dry astragalus medicinal material to water 1:1, and then soak and rehydrate at room temperature for 4 hours; put the rehydrated material in a steam explosion tank, Enter steam to make the pressure in the tank reach 1.2 MPa, maintain the pressure at 1.2 MPa for 5 minutes and then proceed with steam explosion treatment; add water at 90℃ with 10 times the absolute dry mass of the material after steam explosion, and extract once, 1 hour each time, and combine the water Extraction: After the water extract is evaporated under reduced pressure, ethanol is added to make the alcohol content reach 80%, while precipitation occurs. The precipitation part and the supernatant are separated and purified to prepare polysaccharides and saponin components. The porosity, pore volume and average pore diameter of the astragalus material after steam explosion are 68.88%, 1.473%...
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[0010] Example 2:
[0011] Cut the astragalus medicinal material to 3~5 cm, add water according to the mass ratio of absolute dry astragalus medicinal material to water 1:4, and then soak and rehydrate at room temperature for 12 h; put the rehydrated material in a steam explosion tank, Add steam to make the pressure in the tank reach 1.8 MPa, maintain it for 15 minutes and proceed with steam explosion treatment; add 100℃ water 20 times the absolute dry mass of the material after steam explosion, extract 3 times, 2 h each time, combine the water extracts; After the water extract is evaporated to dryness under reduced pressure, anhydrous ethanol is added, and precipitation is generated at the same time. The precipitation part and the supernatant are separated and purified to prepare polysaccharide and saponin components respectively. The porosity, pore volume and average pore diameter of the astragalus material after steam explosion were 70.17%, 2.072 ml / g and 41265 nm, while the o...
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[0012] Example 3:
[0013] Cut the astragalus medicinal material to 3~5 cm, put it in the steam explosion tank according to the astragalus medicinal material, and pass the steam to make the pressure in the tank reach 0.6MPa, maintain it for 1 min, then proceed with steam explosion treatment; add the material after steam explosion to its absolute dry quality 5 times of 60℃ water, extract once, 1h each time, combine the water extracts; after the water extracts are evaporated under reduced pressure, ethanol is added to make the alcohol content reach 50%, and precipitation occurs at the same time. The precipitated part and the supernatant are separated Purification separately makes polysaccharide and saponin components. The porosity, pore volume and average pore diameter of the astragalus material after steam explosion were 49.03%, 0.701 ml / g and 1913 nm, while the original unsteamed astragalus material was 48.43%, 0.629 ml / g and 272.6 nm. After steam explosion, astragaloside The ex...
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