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A kind of extraction process of dihydromyricetin in vine tea and the preparation process of vine tea functional beverage

A technology of dihydromyricetin and vine tea, which is applied in the direction of organic chemistry, can solve the problems of restricting the subsequent extraction of dihydromyricetin, low content of total flavonoids, and low extraction rate, so as to achieve increased extraction difficulty, high extraction rate, and The effect of high-efficiency extraction

Active Publication Date: 2022-04-22
武汉食味深山农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As can be seen from the above prior art, the extraction of flavonoids in vine tea mostly adopts conventional extraction methods, which have the problems of low extraction rate and low total flavonoid content; and extraction methods such as ethanol extraction and acetone extraction There is also a shortage of solvent residues
Dihydromyricetin is the main component of vine tea flavonoids extract, and the existing methods for extracting vine tea flavonoids are insufficient, which also greatly restricts the subsequent extraction of dihydromyricetin in vine tea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for extracting dihydromyricetin in rattan tea, comprising the following steps:

[0032] (1) Pretreatment: 1kg rattan tea leaves are dried and pulverized for subsequent use;

[0033] (2) Countercurrent extraction treatment: The tea leaves pulverized in step (1) are subjected to low-temperature countercurrent extraction in a low-temperature countercurrent equipment, the extraction temperature is room temperature, and the extraction time is 15 minutes. The extraction solvent is 1.4g / L surface active (a mixture of Tween 80 and sodium lauryl sulfate with a mass ratio of 3:1), the leaching liquid-solid ratio is 25mL / g, and after the leaching is completed, filtrate and filter residue are obtained;

[0034] (3) Pretreatment of the filter residue: add deionized water to the filter residue obtained in step (2) at a mass ratio of 1:1, and then ultrasonicate for 10 minutes under the conditions of 60°C, 40khz, and 150W;

[0035] (4) Extraction of filter residue: transfer t...

Embodiment 2

[0040] A method for extracting dihydromyricetin in rattan tea, comprising the following steps:

[0041] (1) Pretreatment: 1kg rattan tea leaves are dried and pulverized for subsequent use;

[0042] (2) Countercurrent extraction treatment: The tea leaves pulverized in step (1) are subjected to low-temperature countercurrent extraction in a low-temperature countercurrent equipment, the extraction temperature is room temperature, and the extraction time is 18 minutes. The extraction solvent is 1.4g / L surface active agent (a mixture of Tween 80 and sodium lauryl sulfate with a mass ratio of 3:1), the liquid-solid ratio of the extraction is 25mL / g, and after the extraction is completed, filtrate and filter residue are obtained;

[0043] (3) Pretreatment of the filter residue: add deionized water to the filter residue obtained in step (2) at a mass ratio of 1:1.5, and then ultrasonicate for 8 minutes under the conditions of 60°C, 40khz, and 180W;

[0044] (4) Extraction of filter r...

Embodiment 3

[0049] A method for extracting dihydromyricetin in rattan tea, comprising the following steps:

[0050](1) Pretreatment: 1kg rattan tea leaves are dried and pulverized for subsequent use;

[0051] (2) Countercurrent extraction treatment: The tea leaves pulverized in step (1) are subjected to low-temperature countercurrent extraction in a low-temperature countercurrent equipment, the extraction temperature is room temperature, and the extraction time is 20 minutes. The extraction solvent is 1.4g / L surface active agent (a mixture of Tween 80 and sodium lauryl sulfate with a mass ratio of 3:1), the liquid-solid ratio of the extraction is 25mL / g, and after the extraction is completed, filtrate and filter residue are obtained;

[0052] (3) Pretreatment of the filter residue: add deionized water to the filter residue obtained in step (2) at a mass ratio of 1:1, and then ultrasonicate for 8 minutes under the conditions of 60°C, 40khz, and 200W;

[0053] (4) Extraction of filter resi...

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PUM

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Abstract

The invention discloses an extraction process of dihydromyricetin in vine tea and a preparation process of vine tea functional beverage, wherein the extraction method includes pretreatment, countercurrent extraction treatment, pretreatment of filter residue, extraction and combination of filter residue, flavonoid Steps such as vacuum concentration and crystallization of the class extract. The extraction method can not only fully extract the raw materials, but also more thoroughly extract the flavonoids remaining in the filter residue, ensuring efficient extraction of the flavonoids, high extraction rate and high flavonoid content. At the same time, the extraction method adopts a combination of water extraction, ultrasonic extraction and high-pressure extraction, which avoids potential pollution caused by the use of organic solvents such as ethanol. The method has high extraction rate and high content of dihydromyricetin.

Description

technical field [0001] The invention belongs to the technical field of vine tea processing, and more specifically relates to an extraction process of dihydromyricetin in vine tea and a preparation process of vine tea functional beverage. Background technique [0002] Tengcha, also known as Maoyan Qingshuang Tea, Qingshuang Guteng Tea, Immortal Tea, Dragon Beard Tea, etc. Vine tea is not only a pure natural green drink, but also a wonderful tea with strong medicinal and health care properties, rich in flavonoids. Flavonoids usually have the functions of protecting the liver, treating chronic hepatitis and anti-oxidation, and also have the functions of preventing and treating hypertension, coronary heart disease, lowering blood fat and cholesterol. [0003] At present, the main methods for extracting flavonoids in vine tea include hot water extraction, ultrafiltration, dilute ethanol extraction, acetone extraction, ultrasonic extraction, microwave extraction, and enzymatic hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/32C07D311/40
CPCC07D311/32C07D311/40
Inventor 谭乔代传文
Owner 武汉食味深山农业科技有限公司
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