Method for preparing plant extract
A plant extract and extract technology, applied in the direction of plant raw materials, medical preparations containing active ingredients, plant/algae/fungus/moss components, etc., can solve the problem of varying daidzin content, unstable therapeutic effect, and difficulty in exerting Efficacy and other issues, to achieve reasonable and complete quality control indicators, stability and effect, and improve the effect of the effect
Inactive Publication Date: 2015-10-21
LIUZHOU BEIDIFEN TECH
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Problems solved by technology
In the extract prepared by this method, the content of daidzein is very small, and it is difficult to exert the best medicinal effect in application
Moreover, since there is no requirement for the content of daidzein, there is no item of daidzein in the quality control index of kudzu root extract in the prior art. Therefore, the content of daidzein in each batch of products may vary, which makes the drug effect sometimes good and sometimes bad. Bad, the treatment effect is unstable
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[0010] The present invention will be further described below in combination with specific embodiments.
[0011] A preparation method of plant extract, comprising the following steps:
[0012] S1. Add 92% methanol or ethanol solution of 7 times the volume of Pueraria root, heat and reflux for extraction for 3 hours, separate solid and liquid, recover methanol or ethanol solution, make the extract a thick paste, and then extract the extract with water-saturated n-butanol 6 times, after recovering the solvent, the extract was concentrated and dried in vacuum to obtain the kudzu root extract;
[0013] S2. Heat the soybean meal with 91% ethanol solution to reflux and extract for 5 hours, separate the solid and liquid, reclaim the ethanol solution until the extract is thick paste, then extract the extract 8 times with water-saturated n-butanol, and after recovering the solvent, extract The product was concentrated and dried in vacuum to obtain daidzein;
[0014] S3. Mix the Puerar...
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The invention provides a method for preparing plant extract. The method includes the following steps: S1, 92% of methyl alcohol or ethanol solutions with the volume seven times that of kudzuvine roots are added into the kudzuvine roots, extracting is carried out for three hours in a heating reflux mode, solid-liquid separation is carried out, the methyl alcohol or ethanol solutions are recycled to enable the extract to be in a thick paste type, then the extract is extracted six times by water-saturated normal butanol, after solvents are recycled, the extract is concentrated and dried in a vacuum mode, and kudzuvine root extract is obtained; S2, soybean meal is extracted for five hours in a heating reflux mode through 91% of ethanol solutions, solid-liquid separation is carried out, the ethanol solutions are recycled till the extract is in a thick paste type, then the extract is extracted eight times by water-saturated normal butanol, after solvents are recycled, the extract is concentrated and dried in a vacuum mode, and daidzin is obtained; S3, the kudzuvine root extract and the daidzin are mixed in the proportion 6:1, and a compound kudzuvine root extract product is obtained. The method has the advantages that the content of the daidzin in the extract is greatly increased.
Description
technical field [0001] The invention relates to a preparation method of an extract, in particular to a preparation method of a plant extract. Background technique [0002] The natural plant kudzu root has very special medicinal value. It has good curative effect on cardiovascular and cerebrovascular diseases, and has quite good alcohol abstinence and hangover effects. The latest research has found that these medicinal effects of puerarin are mainly due to its two components, puerarin and daidzein. Puerarin and daidzein have their own special effects in medicine, and both are indispensable. The prior art generally adopts the following processes when preparing the kudzu root extract: kudzu root plant→methanol extraction→extract→water-saturated n-butanol extraction or Al 2 o 3 Separation on the column → extract or eluent → recovery of solvent → residue → vacuum concentration and drying → kudzu root extract. In the extract prepared by this method, the content of daidzein is v...
Claims
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Login to View More IPC IPC(8): A61K36/488A61P39/02A61P25/32
Inventor 吴国勇
Owner LIUZHOU BEIDIFEN TECH