Xinjiang juniper total flavonoids extract and its preparation method and application
The technology of total flavonoids and extracts is applied in the field of total flavonoids extract of juniper juniper and its preparation field, which can solve the problems of affecting the regeneration of macroporous adsorption resin, affecting the quality of total flavonoids extract, and unclean removal of fat-soluble components, and achieving Good anti-inflammatory and analgesic effect, easy regeneration, no heavy metal residue effect
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Embodiment 1
[0025]Example 1, the total flavonoids extract of Sinica juniper is obtained according to the following preparation method: the first step, the branches and leaves of Sinica juniper are pulverized and dried, and the mixed medicinal material is obtained after drying, the mixed medicinal material is degreased with petroleum ether, and after the degreasing of petroleum ether Add ethanol solution to the medicinal materials, boil and then reflux extraction for 1 to 3 times. After extraction, the extracts are combined and concentrated to obtain a primary extract; in the second step, the primary extract and silica gel are mixed and dried. The packed silica gel packing chromatographic column is degreased for the second time with a mixed solution of petroleum ether and ethyl acetate, and then eluted with ethanol solution to collect the ethanol eluate. After the ethanol eluate is concentrated, the second leaching paste; the third step is to dilute the secondary extract with deionized wate...
Embodiment 2
[0026] Example 2, as an optimization of the above example, in the first step, the amount of ethanol solution added during each reflux extraction is 6 times to 20 times the mass of the mixed medicinal materials; or / and, each extraction time is 1h to 2h , the ethanol solution is 50% to 70% ethanol aqueous solution by volume percentage during each reflux extraction.
Embodiment 3
[0027] Example 3, as an optimization of the above example, in the first step, after extraction, the extracts were combined and concentrated until the relative density at 25° C. was 1.05 to 1.20 to obtain a primary extract.
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