Rosa davurica total flavone extract, its extracting method and its medical use
An extraction method and a technology of total flavonoids, which are applied in the direction of pharmaceutical formulas, medical preparations containing active ingredients, drug combinations, etc., can solve the problems of less development and application, and achieve the effect of abundant resources
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Embodiment 1
[0018] a. Dry and pulverize the Rosa rosea fruit, extract with 6 times the amount of 75% ethanol under heat reflux for 3 times, each time for 5h, 3h, and 1h, filter, and combine the extracts;
[0019] b. Put the extract obtained in step a on a 30-mesh polyamide column, wash it with water until it becomes colorless, then elute with 75% ethanol, collect the eluate, recover the ethanol to obtain an extract, and dry to constant weight.
Embodiment 2
[0021] a. Dry and pulverize the Rosa rosea fruit, extract with 8 times the amount of 70% ethanol under heat reflux for 3 times, each time for 5h, 3h, and 1h, filter, and combine the extracts;
[0022] b. Put the extract obtained in step a on a 45-mesh polyamide column, wash with water until it becomes colorless, then elute with 70% ethanol, collect the eluate, reclaim the ethanol to obtain an extract, and dry to constant weight.
Embodiment 3
[0024] a. Dry and pulverize the Rosa rosea fruit, extract 3 times with 10 times the amount of 65% ethanol under heat reflux, each time for 5h, 3h, 1h, filter, and combine the extracts;
[0025] b. Put the extract obtained in step a on a 60-mesh polyamide column, wash with water until colorless, then elute with 65% ethanol, collect the eluate, recover ethanol to obtain extract, and dry to constant weight.
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