Vine tea extract and applications thereof

Abstract

The invention provides a vine tea extract which is prepared by the following steps: adding a flavones protective agent into an aqueous solution during water extraction of the vine tea; heating and filtering; adding a co-precipitator into the filtrate for flocculation and sedimentation; and after filtering the precipitate, freezing the filtrate to crystallize and separate out the vine tea extract, wherein the vine tea extract comprises 80-90% of general flavones and 70-80% of dihydromyricetin based on general flavones. The invention further provides a composition which comprises the vine tea extract and a ginkgol biloba extract as well as an application of the composition in preparing foods, health foods and drugs for preventing and treating geriatric cognitive disorders. The invention further provides an application of the vine tea extract in preparing drugs for inhibiting prostatic hyperplasia and treating benign prostatic hyperplasia, as well as foods, health foods and drugs for reducing blood sugar, blood fat and blood pressure. Compared with the extract prepared by the existing method, the extract provided by the invention is improved in purity and white in luster. Clinical applications show that the vine tea extract has a certain function of improving getting up in the night to urinate. The vine tea extract combined with the ginkgo biloba extract can be used for preventing and improving geriatric cognitive disorders.

Description

technical field [0001] The invention belongs to the field of extraction of traditional Chinese medicines, in particular to a vine tea, specifically a vine tea extract and its application. Background technique [0002] Vine tea, also known as snake-toothed snake grape, is Ampelopsis grossedentala (Hand.-Mazz) W.T.Wang [A.cantoniesis (H.et A.) Pl.var.grossedentata Hand.-Mazz.], Also known as sweet snake vine, Tianpo tea, black scorpion, red five-clawed golden dragon, and big-toothed snake grape. Mainly distributed in Hunan, Hubei, Guangxi, Guangdong, Yunnan, Guizhou, Jiangxi, Fujian and other provinces. People of the Zhuang and Yao nationalities in provinces such as Guangxi and Hunan in my country often use the stems and leaves as beverages. Sweet and mild in taste, cool in nature, has the effects of clearing away heat and detoxification, dispelling rheumatism, and strengthening muscles and bones. It is mainly used to treat skin moss, jaundice hepatitis, cold wind-heat, sore...

AI Technical Summary

Problems solved by technology

In the alcohol extraction method, because the vine tea extract contains a large amount of fat-soluble components such as chlorophyll, the vine tea extract has a dark green color, and it is necessary to use flammable, explosive, and toxic low-polarity organic The solvent removes fat-soluble impurities such as chlorophyll through a series of processes, which is not conducive to industrial production

The vine tea extract is simply extracted with water. Because the vine tea contains a large amount of impurities such as plant polysaccharides and resin gums, the water extract of vine tea is viscous, difficult to filter and concentrate, and the manufacturing process is very harsh.

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