Dropping pills containing Prunella vulgaris extract and preparation method thereof
A technology of Prunella vulgaris and its extract is applied to dropping pills containing Prunella vulgaris extract. The field of preparation of the dropping pills can solve the problems such as no disclosure of Prunella vulgaris extract preparations.
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preparation example 1
[0052] Preparation example 1-Prunella vulgaris extract A
[0053] The preparation method of the Prunella vulgaris extract of the present invention is:
[0054] (1) Extract Prunella vulgaris with water as the extraction solvent, heat reflux and extract twice, add 10 times the amount of water to extract for 1 hour each time, combine the extracts, concentrate the extracts under reduced pressure, and dry to obtain a crude extract of Prunella vulgaris.
[0055] (2) Disperse the crude extract of Prunella vulgaris in deionized water to obtain a loading solution with a crude extract content of 31g / 100ml of Prunella vulgaris. Place the loading solution on an AB-8 macroporous resin column, and use 2 One-fold volume of deionized water, three-fold volume of 20 vol% ethanol aqueous solution and five-fold volume of 50 vol% ethanol aqueous solution were used as eluents for gradient elution.
[0056] (3) Collect the eluate eluted with 50 vol% ethanol aqueous solution, concentrate and dry to obtain Pr...
preparation example 2
[0057] Preparation example 2-Prunella vulgaris extract B
[0058] (1) Prunella vulgaris was extracted by ultrasonic method with 70vol% ethanol aqueous solution as the extraction solvent, ultrasonically extracted twice at 45℃, each time 20 times the amount of ethanol aqueous solution was added for 1 hour, the extracts were combined, concentrated under reduced pressure until there was no alcohol, and dried , To obtain the crude extract of Prunella vulgaris.
[0059] (2) Disperse the crude extract of Prunella vulgaris in water to obtain a loading solution with a crude extract content of 31g / 100ml of Prunella vulgaris. Place the loading solution on an AB-8 macroporous resin column and use 2 times the volume in turn. Deionized water, 3 times volume of 20 vol% ethanol aqueous solution and 5 times volume of 70 vol% ethanol aqueous solution were used as eluents for gradient elution.
[0060] (3) Collect the eluate eluted with 70 vol% ethanol aqueous solution, concentrate the eluate, and dr...
preparation example 3
[0062] (1) Extract Prunella vulgaris with water as the extraction solvent, ultrasonically extract 3 times, ultrasonic temperature 35℃, add 10 times the amount of water to extract for 1.5h each time, combine the extracts, concentrate the extracts under reduced pressure, and dry to obtain crude extracts of Prunella vulgaris ;
[0063] (2) Disperse the crude extract of Prunella vulgaris in deionized water to obtain a sample loading solution with a crude extract content of 50g / 100ml of Prunella vulgaris. Place the sample loading solution on an AB-8 macroporous resin column, and then Use 4 times volume of deionized water, 2 times volume of 15 vol% ethanol aqueous solution and 5 times volume of 60 vol% ethanol aqueous solution as eluents for gradient elution;
[0064] (3) Collect the eluate after elution with 60 vol% ethanol aqueous solution, concentrate and dry to obtain Prunella vulgaris extract.
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