A kind of extraction and preparation method of active ingredient of rhubarb saltpeter decoction
An active ingredient, the technology of rhubarb, which is applied in the field of extraction and preparation of active ingredients of rhubarb saltpeter soup, can solve the problems of reduced active ingredients, low solubility, and reduced drug efficacy, so as to avoid chemical changes, reduce the use, and solve the problem of active ingredients Reduced effect
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[0018] Take about 1000g of rhubarb, add 7L of water to decoct for 40min, filter the decoction while it is hot, concentrate to 0.53g of crude drug per ml, and load 0.73g of rhubarb per 1ml of resin into the D-101 macropore Resin column, washed with water until clarified, then eluted with 75% ethanol until colorless, collected 75% ethanol eluate, recovered solvent, dried at low temperature, and pulverized into fine powder to obtain rhubarb extract fraction.
[0019] Take about 1000g of Cortex Phellodendri, add 7L of 50% ethanol, and extract under reflux for 1 hour. After recovering the solvent from the extract, dry it at low temperature, and grind it into fine powder to obtain the extract component of Phellodendron Phellodendri.
[0020] Take about 1000g of gardenia, add 7L of water to decoct for 40min, then add the same volume of water to decoct for 30min, filter each decoction while it is hot, combine the two decoctions, and concentrate to 0.65g of crude drug per ml. Resin loa...
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