Rhodiola extract and pharmaceutical composition thereof as well as application of rhodiola extract in treatment of fatty liver disease
A technology of Rhodiola rosea and its extract, which is applied in the field of medicine, can solve the problems of no effective drugs for preventing and treating fatty liver, and achieve the effects of improving liver microcirculation disorder, low production cost, and reducing liver fat content
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Embodiment 1
[0056] Adopt the dried Rhodiola rosea rhizome as the original drug, grind it and extract it 3 times with 80% ethanol under reflux, each dosage is 8 times of the weight of the original drug, and the extraction time is 2 hours each time, the extracts are combined and filtered, and the filtrate Concentrate under reduced pressure to recover ethanol until there is no alcohol smell, and obtain the extract, adjust the density of the extract to 1.16, add 5 times the amount of water to carry out water precipitation, stand at 5°C for 72 hours, filter the precipitate, concentrate the filtrate under reduced pressure, and perform HP -20 macroporous adsorption resin separation, using three gradients of pure water, 50% ethanol, and 95% ethanol for elution, concentrating the eluent of 50% ethanol under reduced pressure, and obtaining the effective part of Rhodiola rosea after freeze-drying .
Embodiment 2
[0058] Adopt the dry rhizome of Rhodiola angustifolia as the original drug, grind and extract 2 times with 95% ethanol backflow, each dosage is 7 times of the weight of the original drug, and the extraction time is 3 hours each time, the extracts are combined and filtered, and the filtrate is reduced Concentrate under pressure to recover ethanol until there is no alcohol smell, and obtain the extract, adjust the density of the extract to 1.18, add 8 times the amount of water to carry out water precipitation, stand at 5°C for 96 hours, filter the precipitate, and perform HP- Separation with 40 macroporous adsorption resins, using four gradients of pure water, 5% ethanol, 50% ethanol, and 95% ethanol for elution, concentrating the eluent of 50% ethanol under reduced pressure, and obtaining Rhodiola angustifolia after freeze-drying effective part.
Embodiment 3
[0060] Adopt dry Rhodiola rosea rhizome as the original drug, crush it and extract it twice with 70% methanol under reflux, each dosage is 8 times the weight of the original drug, and the extraction time is 2 hours each time, the extracts are combined and filtered, and the filtrate Concentrate under reduced pressure to recover methanol to obtain an extract, adjust the density of the extract to 1.17, add 6 times the amount of water for water precipitation, stand at 5°C for 48 hours, filter the precipitate, and concentrate the filtrate under reduced pressure for D101 macroporous adsorption resin The separation is carried out by four gradients of pure water, 5% ethanol, 50% ethanol and 95% ethanol for elution, the eluate of 50% ethanol is concentrated under reduced pressure, and the effective fraction of Rhodiola rosea is obtained after freeze-drying.
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