Dogwood fruit extract and its preparing method and use
A technology of Cornus officinalis and extract, applied in the field of Cornus officinalis extract
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Embodiment 1
[0108] Example 1: Preparation of Cornus officinalis Extract
[0109] Cornus officinalis medicinal materials are decocted 3 times with water, and the amount of water is added 6 times, and the time is 2 hours. Combine the decoctions for 3 times, filter, concentrate under reduced pressure, and refrigerate for later use after filtration; extract the concentrated Cornus officinalis water, put it on a HP20 macroporous adsorption resin column, let the liquid medicine flow through the whole column, and use deionized water, 30%, Carry out gradient elution with 50% ethanol, collect the eluate of 50% ethanol, and concentrate under reduced pressure to form an extract; extract the extract obtained by separating the macroporous adsorption resin with ethanol, remove the organic solvent, concentrate, and dry to obtain a solid product . Yield 2.5%.
Embodiment 2
[0110] Example 2: Preparation of Cornus officinalis Extract
[0111] Cornus officinalis medicinal materials are decocted 3 times with water, and the amount of water is added 6 times, and the time is 2 hours. Combine the decoctions for 3 times, filter, concentrate under reduced pressure, add ethanol to adjust the alcohol concentration to 70%, refrigerate for 24 hours, filter, recover ethanol from the filtrate under reduced pressure, and refrigerate for later use.
[0112] Take the above-mentioned water extraction and alcohol precipitation extract of Cornus officinalis, put it on a HP20 macroporous adsorption resin column, let the medicinal solution flow through the whole column, and carry out gradient elution with deionized water, 30% and 50% ethanol in sequence, and collect the elution of 50% ethanol. liquid, concentrated under reduced pressure into an extract.
[0113] On Al 2 o 3 Chromatographic column, eluted with ethanol for purification, and freeze-dried to obtain a ...
Embodiment 3
[0115] Example 3: Capsules
[0116] The cornus officinalis extract 300g of the present invention 1000g of medicinal starch, mix evenly, pack into No. 1 capsule, each 0.35g, take 1-2 capsules orally each time, twice a day.
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