A kind of extraction and purification method of Prunella vulgaris total flavonoids and its application

Abstract

The invention relates to an extracting and purifying method for prunella vulgaris total flavonoids. The method comprises the steps: (1) fetching and crushing a prunella vulgaris medicinal material, sieving the crushed prunella vulgaris medicinal material, adding 5-95% ethanol, of which the weight is 1-30 times that of the crushed prunella vulgaris medicinal material, into the crushed prunella vulgaris medicinal material, carrying out refluxing extraction for 1-3 times, carrying out refluxing extraction for 1-5 hours at a time, filtrating extractions, and combining filtrates, so as to obtain an extract; (2) heating to concentrate the extract until the concentration of the extract is 0.05-0.5g / mL, and then, adjusting the pH value to 1-7, so as to obtain a liquid sample; (3) loading the liquid sample to macroporous adsorption resin NKA-9, carrying out impurity removal with 1-10BV water, and then, eluting with 1-10BV 10-95% ethanol; (4) continuously carrying out a purifying process in the step (3) repeatedly so as to obtain enrichment, drying the enrichment at reduced pressure until the enrichment becomes powder or extractum, thereby obtaining the prunella vulgaris total flavonoids. The invention also provides application of the prunella vulgaris total flavonoids in preparation of drugs for treating liver cancer. Proven by pharmacological drug effect researches, the prunella vulgaris total flavonoids have obvious liver tumor resisting activity and are of an obvious dose-effect relationship, so that a theoretical and experimental basis is provided for the development of new liver tumor resisting drugs, which are prepared from enrichment of the prunella vulgaris total flavonoids and have extensive clinical use value and commercial development value, and industrial production.

Description

technical field [0001] The invention relates to the technical fields of chemistry and medicine, in particular to a method for extracting and purifying total flavonoids from Prunella vulgaris and its application. Background technique [0002] Cancer is a general term for a large class of malignant tumors. It is the world's largest disease that seriously threatens human health. Various inducing factors such as environmental pollution, chemical pollution (chemical toxins), ionizing radiation, free radical toxins, etc. can lead to cancer happened. Current cancer treatments include surgery, chemotherapy, radiotherapy, traditional Chinese medicine, etc. These treatments have certain curative effects on cancer, but their effects are limited, and radiotherapy and chemotherapy can also cause great damage to normal tissues. Therefore, The treatment of cancer is still a great test facing mankind. TCM treatment of cancer has now been widely recognized by medical experts at home and ab...

AI Technical Summary

Problems solved by technology

Therefore, the medicinal material extract contains a large amount of non-flavonoid impurities, which is not conducive to clarifying the components and mechanism of action of medicinal substances, and it is difficult to invest in the research and development of new drugs. Therefore, the research on the purification method of total flavonoids of Prunella vulgaris has practical significance

According to literature reports, the enrichment purity of total flavonoids in Prunella vulgaris has not reached more than 90%, which is not conducive to the study of the material basis, mechanism of action and the analysis and characterization of its medicinal components, and it is difficult to develop it into a clinical product. new drug