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Method for extracting dihydromyricetin from vine tea

A technology of dihydromyricetin and rattan tea, applied in the direction of organic chemistry, etc., to achieve the effects of saving production costs, convenient operation, and large output

Inactive Publication Date: 2010-08-18
安徽省瑞森生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the development, utilization and clinical application of vine tea is still at a relatively low level.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Take by weighing 10kg of rattan tea dried leaves, carry out microwave radiation treatment with a microwave oven at a microwave power of 900w, and pulverize to 80-100 mesh particles;

[0021] (2) Add the above-mentioned particles to WNT-B type microwave countercurrent extraction equipment, add 100kg of water, and filter under microwave power 1000w for 60 minutes to obtain filtrate A and filter residue A;

[0022] (3) Add the filter residue A to the WNT-B type microwave countercurrent extraction equipment, add 100kg of water, and filter after extracting for 60 minutes at a microwave power of 1000w to obtain filtrate B and filter residue B;

[0023] (4) Merge filter residue A and filter residue B totaling 5.3 kg, add to microwave countercurrent extraction equipment, add 15 kg of ethanol with a mass fraction of 70%, and filter after 50 minutes of extraction under microwave power 1000w to obtain filtrate C;

[0024] (5) Filtrate A, filtrate B and filtrate C were combined...

Embodiment 2

[0026] (1) Take by weighing 10kg of the dried leaves of rattan tea, carry out microwave radiation treatment with a microwave oven at a microwave power of 800w, and pulverize to 80-100 mesh particles;

[0027] (2) Add the above-mentioned granules to the WNT-B type microwave countercurrent extraction equipment, add 60kg of water, and filter after extracting for 30 minutes at a microwave power of 1500w to obtain filtrate A and filter residue A;

[0028] (3) Add the filter residue A to the WNT-B type microwave countercurrent extraction equipment, add 60kg of water, and filter after extracting for 30 minutes at a microwave power of 1500w to obtain filtrate B and filter residue B;

[0029] (4) Combine the filter residue A and the filter residue B to a total of 5.1kg, add to microwave countercurrent extraction equipment, add 12kg of ethanol with a mass fraction of 70%, and filter after 30 minutes of extraction under microwave power 1500w to obtain filtrate C;

[0030] (5) Filtrate A,...

Embodiment 3

[0032] (1) Take by weighing 10kg of the dried leaves of rattan tea, carry out microwave radiation treatment with a microwave oven at a microwave power of 800w, and pulverize to 80-100 mesh particles;

[0033] (2) Add the above particles into WNT-B type microwave countercurrent extraction equipment, then add 120kg of water, and filter after extracting for 90 minutes at a microwave power of 1200w to obtain filtrate A and filter residue A;

[0034] (3) Add the filter residue A to the WNT-B type microwave countercurrent extraction equipment, add 120kg of water, and filter after extracting for 90 minutes at a microwave power of 1200w to obtain filtrate B and filter residue B;

[0035] (4) Merge filter residue A and filter residue B total 5.5kg, join in the microwave countercurrent extraction equipment, then add 18kg of ethanol with a mass fraction of 50%, filter after extraction for 30 minutes under microwave power 1200w, obtain filtrate C;

[0036] (5) Filtrate A, filtrate B and f...

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Abstract

The invention discloses a method for extracting dihydromyricetin from vine tea, including the following steps: (1) vine tea dry leaves are weighed, subject to microwave radiation treatment by a microwave oven and then smashed; (2) the particles are added into a microwave reverse flow extractor, water is added, microwave extraction and filtering are carried out, thus obtaining filtration A and residue A; (3) the residue A is processed according to the method in the step (2), thus obtaining filtration B and residue B; (4) residue A and residue B are merged and added into the microwave reverse flow extractor, ethanol is added, microwave extraction is carried out for 30-60min and then filtering is carried out, thus obtaining filtration C; (5) the filtrations A, B and C are merged, and then concentration, crystallization and drying are carried out. The invention has simple technology and convenient operation, extraction ratio of dihydromyricetin can reach 47.3%, purity can reach 85%, the required organic solvent is less, operating safety is good, no high temperature furnace is required for heating, energy consumption is reduced, and production cost is saved.

Description

technical field [0001] The invention relates to a method for extracting effective components in vine tea, in particular to a method for extracting dihydromyricetin from vine tea. Background technique [0002] Vine tea is a very ancient Chinese herbal medicine resource, tea-like plant resource and medicinal and edible plant resource. Its original plant is the snake grape of the genus Vitaceae, commonly known as sweet tree tea, sweet tea vine, Tianpo tea (Guangxi), vinepo tea (Guangdong Lianzhou), wintersweet tea, stone flower tea (Guangdong Yingde), Maoyan Mildew tea (Zhangjiajie, Hunan), white tea (Guangdong), white tea cake, dysentery tea, nectar tea, etc. Its nature is cool, and it can clear away heat and detoxify. Diuretic. Anti-inflammatory, expelling wind and dampness, dissipating stasis and breaking knots, etc., can treat lung abscess, intestinal, scrofula, rheumatism, carbuncle swelling and pain, bruises, burns, chronic nephritis, hepatitis, astringent pain in urin...

Claims

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Application Information

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IPC IPC(8): C07D311/32C07D311/40
Inventor 韦洋向忠菊蔡菊程克炯
Owner 安徽省瑞森生物科技有限责任公司
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