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Preparation method for extracting general flavone from Chinese medicinal herbs

A technology of total flavonoids and Chinese herbal medicines, applied in the field of plants, can solve the problems that there are no reports on the development and application of chemical components, and achieve the effects of good development and application value, high efficiency, and simple operation

Inactive Publication Date: 2011-08-10
ZHEJIANG FORESTRY UNIVERSITY
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Problems solved by technology

At present, there is no report on the research on its chemical composition and its development and application

Method used

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  • Preparation method for extracting general flavone from Chinese medicinal herbs
  • Preparation method for extracting general flavone from Chinese medicinal herbs
  • Preparation method for extracting general flavone from Chinese medicinal herbs

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Embodiment 1

[0028] 1) Raw material processing: select the medicinal materials of Fructus officinalis and crush them into coarse powder with a pulverizer, and pass through a 20-mesh sieve;

[0029] 2) Percolation extraction: Put the coarse powder of Fructus officinalis into a percolation cylinder, soak it in 60% ethanol with water for 10 hours, then use 70% ethanol with water for percolation extraction, if the weight of the raw material is 1kg, the amount of ethanol with water is 12 liters , the flow rate is 6 mL / min, and the percolate is collected;

[0030] 3) Flash concentration: the percolation liquid is placed in a water bath with a temperature of 70°C, a vacuum of 0.095Mpa, and a flow rate of 250 mL min -1 Carry out vacuum thin-film concentration under the condition of condition, reclaim ethanol, obtain the concentrated solution that every mL medicine liquid is equivalent to containing 2.0g raw material;

[0031] 4) Macroporous resin adsorption purification: the obtained concentrate ...

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Abstract

The invention relates to a preparation method for extracting general flavone from Chinese medicinal herbs, belonging to the technical field of plants. The preparation process comprises the following steps of: percolating and extracting dense cornel as a raw material by using aqueous ethanol as a solvent; flashing the extract, concentrating and recovering the solvent; separating and enriching the concentrated solution through macroporous resin columns, carrying out gradient elution with an aqueous solvent, mixing a certain proportion of aqueous solvent eluate, flashing, concentrating and recovering the solvent; and continuously drying in vacuum to form dry powder. The invention has the advantages of simple process, superior extraction and concentration methods, convenience for operation, environmental protection and high efficiency; the extractive contains 6.12-15.58 percent of general flavone, the extraction rate of the general flavone is up to 5.25-10.43 percent, and the transfer rate of the general flavone is up to 45.63-62.88 percent. Proved by primary in-vitro bioassay tests, the dense cornel general flavone extractive has certain activities, such as oxidation resistance, bacteriostasis, and the like, can be used as a food additive, an antioxidant, a preservative, and the like and has certain development and application values.

Description

technical field [0001] The invention belongs to the technical field of plants, in particular to a preparation method for extracting total flavonoids from Chinese herbal medicines. Background technique [0002] Flavonoids are a class of important biologically active substances that exist in the plant kingdom. They are widely found in plants of different families and genera, mainly in Rutaceae, Lamiaceae, Fabaceae, Umbelliferae and Compositae. Studies have reported that about 20% of Chinese herbal medicines contain flavonoids, which shows that the resources of flavonoids are quite rich. Flavonoids can be ingested from food, and can also be extracted from plants rich in flavonoids. It can not only be used as a drug for preventing and treating cardiovascular and cerebrovascular diseases, but also has obvious anti-lipid peroxidation, anti-aging, and scavenging freedom It is a kind of natural ingredients with broad application prospects, and it is also a natural antioxidant and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/75A61P9/14A61P11/04A61P17/00A61P17/02A61P17/04A61P29/00
Inventor 袁珂刘婷黄伟飞胡佳慧
Owner ZHEJIANG FORESTRY UNIVERSITY
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