Selenium-enriched ampelopsis grossedentata and preparation method thereof

Abstract

The invention provides selenium-enriched ampelopsis grossedentata and a preparation method thereof and belongs to the field of tea preparation. The defect of excessive loss of nutrients in a traditional ampelopsis grossedentata production process is overcome. The preparation method of the selenium-enriched ampelopsis grossedentata comprises the following steps of pretreatment, wherein freshly collected ampelopsis grossedentata leaves are soaked in an ethanol solution of alpha-imidic acid for 12-36 hours, and solids are taken out and dried; killing out; fermentation; evaporation of water. In addition, a flavoring step can also be included. The selenium-enriched ampelopsis grossedentata has not only high selenium content but also abundant dihydromyricetin, and the nutritional value of the selenium-enriched ampelopsis grossedentata serving as a beverage is greatly improved. The total selenium content is as high as 2.67 mg / kg, and the highest content of dihydromyricetin can also reach 33.8%.

Description

technical field [0001] The invention belongs to the field of tea preparation, in particular to a selenium-enriched vine tea and a preparation method thereof. Background technique [0002] Vine tea, also known as Maoyan berry tea, is the branches and leaves of Ampelopsis megalophylla Dielset Gilg, a plant in the grape family. In the field of traditional Chinese medicine, it is believed that its characteristics are bitter, slightly astringent, and cool in nature. It has the effects of clearing heat and dampness, calming the liver and lowering blood pressure, promoting blood circulation and dredging collaterals. Blood pressure, dizziness and bruises. [0003] Modern medical research has found that vine tea has the following effects: [0004] 1. Anti-inflammatory and sterilizing [0005] Vine tea has anti-inflammatory, antitussive, and expectorant effects, and its anti-phlegm, and cough-relieving effects are similar to those of clofibrate. Experiments have shown that vine te...

AI Technical Summary

Problems solved by technology

[0016] In the prior art, the Chinese patent with the authorized announcement number CN 102018083 B discloses a production method of fermented vine tea, vine tea extract and vine tea beverage, but this method does not take into account the presence of dihydromyricetin, the active ingredient of vine tea. It is very easy to crystallize during the preparation process, and it is easy to lose activity when the temperature is higher than 100 ° C, so the loss of dihydromyricetin in this method is extremely large

[0017] The authorized announcement number is the Chinese patent of CN 103431105 B. The Chinese patent provides a kind of manufacturing process of selenium-enriched Maoyan berry tea, but this process uses sodium selenite in a large amount, but those skilled in the art know that sodium selenite is harmful to the human body. It is highly toxic, and the oral half-lethal dose for rats is only 7mg / kg, which also leads to the inevitable cumbersome post-treatment process, which is not suitable for large-scale promotion and application

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