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Method for extracting dihydromyricetin in ampelopsin grossedentata by means of fermentation

A technology of dihydromyricetin and Maoyan berry tea, which is applied in the direction of organic chemistry, can solve the problems of not being able to achieve the best economic benefits, waste of tea and flavonoid dihydromyricetin resources, and single waste liquid utilization, so as to improve Yield, extraction rate increase, loss reduction effect

Inactive Publication Date: 2018-04-17
四川外交家酒业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of waste liquid is single, resulting in waste of tea and flavonoid dihydromyricetin resources, which cannot achieve the best economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Grind the finished Maoyanberry tea leaves and pass through a 40-mesh sieve to obtain tea powder. The tea powder is mixed at a material-to-liquid ratio of 1:10 (10 mL of distilled water is added to 1 g of tea powder), extracted with hot water at 80°C for 1 hour, filtered while hot, and the residue is collected. And the filtrate, the residue was mixed with distilled water according to the above method and then refluxed for extraction once, and the filtered filtrate was mixed with the previous filtrate. After concentrating the obtained filtrate, let it stand at 4° C. for 1 day, separate the supernatant from the precipitate, collect the supernatant, and obtain tea juice. Add sucrose to the obtained tea juice to make the sugar content reach 2%, then put the tea juice into an autoclave and sterilize at 121° C. for 20 minutes. After sterilizing 2% sucrose water at 121°C for 20 minutes, mix the two according to the mixing ratio of 1g of brewer's active dry yeast and 20mL of suc...

Embodiment 2

[0044] Grind the finished Maoyanberry tea leaves and pass through a 40-mesh sieve to obtain tea powder. The tea powder is mixed at a material-to-liquid ratio of 1:15 (15 mL of distilled water is added to 1 g of tea powder), extracted with hot water at 100°C for 1 hour, then filtered while hot, and the residue is collected. And the filtrate, the residue was mixed with distilled water according to the above method and then refluxed for extraction once, and the filtered filtrate was mixed with the previous filtrate. After concentrating the obtained filtrate, let it stand at 4° C. for 1 day, separate the supernatant from the precipitate, collect the supernatant, and obtain tea juice. Add sucrose to the tea juice obtained to make the sugar content reach 5%, then put the tea juice into an autoclave and sterilize at 121° C. for 20 minutes. After sterilizing 2% sucrose water at 121°C for 20 minutes, mix the two according to the mixing ratio of 1g of active dry yeast and 20mL of sucros...

Embodiment 3

[0046]Grind the finished Maoyanberry tea leaves through a 40-mesh sieve to obtain tea powder. The tea powder is mixed at a material-to-liquid ratio of 1:25 (25 mL of distilled water is added to 1 g of tea powder), extracted with hot water at 95°C for 2 hours, filtered while hot, and the residue collected. And the filtrate, the residue was mixed with distilled water according to the above method and then refluxed for extraction once, and the filtered filtrate was mixed with the previous filtrate. After concentrating the obtained filtrate, let it stand at 4° C. for 1 day, separate the supernatant from the precipitate, collect the supernatant, and obtain tea juice. Add sucrose to the obtained tea juice to make the sugar content reach 10%, then put the tea juice into an autoclave and sterilize at 121° C. for 20 minutes. After sterilizing 2% sucrose water at 121°C for 20 minutes, mix the two according to the mixing ratio of 1g Saccharomyces cerevisiae active dry yeast and 20mL sucr...

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Abstract

A method for fermenting and extracting dihydromyricetin in Maoyanberry tea relates to a method for extracting active ingredients in Maoyanberry tea, comprising the following steps: pulverizing Maoyanberry tea leaves and extracting them under reflux, concentrating the filtrate and then statically tea juice; add sucrose to the tea juice and sterilize; mix active dry yeast and sucrose solution in a constant temperature water bath to activate the active dry yeast and insert it into the sterilized tea juice; inoculate the tea juice Putting it into a shaker for fermentation; concentrating to obtain extract, drying to obtain dihydromyricetin coarse powder and recrystallizing to obtain pure dihydromyricetin. The present invention utilizes the liquid fermentation method to extract dihydromyricetin in Maoyanberry tea, which can consume nutrients such as sugar and protein in the Maoyanberry water extract, thereby reducing the viscosity of the concentrated hot water extract and making the dihydromyricetin Myricetin can settle down quickly, effectively utilizes Maoyanberry tea resources, and improves the yield of dihydromyricetin.

Description

technical field [0001] The invention relates to a method for extracting active ingredients in Maoyan berry tea, in particular to a method for fermenting and extracting dihydromyricetin in Maoyan berry tea. Background technique [0002] At present, domestic small and medium-sized enterprises mainly use the hot water extraction method to produce dihydromyricetin in Maoyanberry tea. The hot water extraction method includes hot water extraction method and hot water reflux method. The method is simple to operate, the water is safe and non-toxic, and the cost is low. The extraction rate is high, the primary extraction rate can reach 30%, and the secondary extraction rate is about 6%. However, the secondary extraction rate is low, which increases the cost and energy consumption of production; the Maoyanberry water extract contains more nutrients such as sugar and protein, and after concentration, the viscosity is large, and dihydromyricetin is difficult to settle down; directly Du...

Claims

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Application Information

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IPC IPC(8): C07D311/32C07D311/40
CPCC07D311/32C07D311/40
Inventor 熊艳
Owner 四川外交家酒业有限公司
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