New purpose of brevifolin
A technology of brevifolia hematoxylin and medicine, which is applied in the field of brevifolia hematoxylin in the field of medicine, and can solve the problem of rare pomegranate leaves
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[0025] The following preparation method and drug effect experiment data make the preparation and application of the said brevicol of the present invention confirmed, and the following examples should not be regarded as limiting the present invention simultaneously.
[0026] The brevifolia hematoxylin of the present invention is obtained by the following method: firstly, reflux extracting 5-15 times the weight of the medicinal material with 60%-95% ethanol, the extraction frequency is generally 1-3 times, and each time is 1-3 hours. Concentrate the extract at normal pressure or reduced pressure at a temperature of 30-90°C to recover ethanol. Add methanol to dissolve, mix the sample with macroporous resin AB-8, pack it into a column, and then elute with 4-8 times column volume of water and 30-90% ethanol respectively, and collect the ethanol eluate part. Concentrate the collected eluate under reduced pressure at 30-80°C, extract with ethyl acetate, take the extracted part of eth...
Embodiment 1
[0028] Get 0.5 kg of pomegranate leaves and extract once with 80% ethanol reflux of 6 times its weight, each time for 1 hour. The extract was decompressed, concentrated at a temperature of 45°C, recovered ethanol, dried, and weighed. Add methanol to dissolve, stir into macroporous adsorption resin (AB-8) and pack into column, then use 4 times of column volume of water and 4 times of column volume of 90% ethanol to elute respectively, and collect the latter part of the eluate. The collected eluate was concentrated under reduced pressure at a temperature of 30° C., and dried under reduced pressure to obtain brevifolia hematoxylin. As determined by high performance liquid chromatography, the purity of the brevichematoxylin is about 80%.
Embodiment 2
[0030] Get 0.5 kg of hematoxylin and use 15 times of the weight of the material to extract 2 times with 80% ethanol under reflux, each time for 3 hours. Concentrate the extract to recover ethanol, add water, extract with ethyl acetate, take the extract, mix it with polyamide (60-80 mesh) and pack it into a column, elute with 6 times the column volume of ethanol-water (50:50), collect and elute liquid. The collected eluate was concentrated under reduced pressure at 60° C., and the precipitate was dried under normal pressure to obtain brevifolia hematoxylin. The brevifolia hematoxylin is determined by high performance liquid chromatography, and the brevifolia hematoxylin has a purity of about 90%.
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