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Technique for extracting total flavone from eleocharis dulcis trin.ex henschel husk

A technology of water chestnut skin and total flavonoids, which is applied in the field of flavonoid extraction technology, can solve the problems that have not been widely used, and achieve the effect of expanding raw material resources

Inactive Publication Date: 2008-09-24
HEZHOU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water leaching and supercritical extraction are not widely used due to many limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0017] Take 100g of water chestnut skin dry powder raw material, put it into an extraction tank, add 1000g of 70% edible ethanol, reflux extraction at 50°C for 3h, filter the extract, repeat 3 times, combine the extract, distill the filtrate under reduced pressure, recover ethanol, residue After drying, add water 5 times the amount of the residue to dissolve, wash with petroleum ether 4 times the amount of the residue several times until the petroleum ether phase is colorless, take the water phase and transfer it to a D101 macroporous adsorption resin column at a flow rate of 0.2BV / H , the ratio of raw material to resin amount is 1: 1.5, wash the resin after adsorption with water at a flow rate of 0.2BV / H to colorless, and then use 80% edible ethanol to elute to no flavonoids at a flow rate of 2.0BV / H Outflow (with FeCl 3 The solution detects the elution of flavonoids, if there are flavonoids, add FeCl 3 When the solution is yellow, if there is no color change), the eluate is...

Embodiment approach 2

[0019] Take 100g of water chestnut skin dry powder raw material, put it into an extraction tank, add 1200g of 60% edible ethanol, reflux extraction at 60°C for 2h, filter the extract, repeat 3 times, combine the extract, distill the filtrate under reduced pressure, recover ethanol, residue After drying, add water 4 times the amount of the residue to dissolve, wash with petroleum ether 3 times the amount of the residue several times until the petroleum ether phase is colorless, take the water phase and transfer it to a D201 macroporous adsorption resin column at a flow rate of 0.5BV / H , the ratio of the raw material to the amount of resin is 1:2, wash the adsorbed resin with water at a flow rate of 0.5BV / H to colorless, and then use 75% edible ethanol to elute with a flow rate of 1.5BV / H until no flavonoids Outflow (with FeCl 3 The solution detects the elution of flavonoids, if there are flavonoids, add FeCl 3 When the solution is yellow, if there is no discoloration), the elu...

Embodiment approach 3

[0021] Take 100g of water chestnut skin dry powder raw material, put it into the extraction tank, add 1500g of 50% edible ethanol, reflux extraction at 70°C for 3h, filter the extract, repeat 2 times, combine the extract, distill the filtrate under reduced pressure, recover ethanol, residue After drying, add 7 times the amount of residue in water to dissolve, wash several times with chloroform that is 6 times the amount of residue, until the chloroform phase is colorless, take the water phase and transfer it to D101 macropore adsorption at a flow rate of 0.8BV / H Resin column, the ratio of raw material and resin amount is 1: 3, the resin after the adsorption is washed with water at the flow rate of 0.8BV / H to colorless, and then with the concentration of 75% edible ethanol with the flow rate of 1.0BV / H Elution to No flavonoids elute (with FeCl 3 The solution detects the elution of flavonoids, if there are flavonoids, add FeCl 3 When the solution is yellow, if there is no color...

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PUM

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Abstract

The invention provides a technology for extracting TFA from a chufa peel, which belongs to the crude drugs chemical technical field. The technology is characterized in that the chufa peel is taken as the raw material, the edible ethanol solution is taken as a menstruum and is refluxed and extracted at a temperature ranging from 50 DEG C to 70 DEG C, the extracting fluid which is degreased is collected by a macropore polymeric adsorbent and is eluted by the edible ethanol solution to the extent that no flavone flows out (which is detected by an FeCl3 solution), the elution solution is concentrated and dried, the ethanol is recycled at the same time, the chufa peel TFA crude product is made and is extracted by the ethanol as well as is filtered and concentrated and dried, the ethanol is recycled at the same time, and the refined chufa peel TFA is made. The technology extracts the chufa peel TFA from the chufa peel successfully, has the productive rate ranging from 0.8 percent to 1.2 percent, is easy to realize the industrial production, widens the raw material resources of the flavone products, ensures that the chufa peel as the waste is changed into valuable, extracts the flavonoid compound which is the green and natural product and can be used for pharmacy or food industry.

Description

1. Technical field [0001] The invention relates to a process for extracting flavonoids, belonging to the technical field of natural medicinal chemistry, in particular to a process for extracting total flavonoids from water chestnut skin. 2. Technical Background [0002] Water chestnut (Eleochairis toberosa), also known as Water chestnut, is the underground corm of water chestnut, a perennial aquatic herb of Cyperaceae. It is cultivated in all provinces south of the Yangtze River Basin in China, and the output of water chestnut in Guangxi accounts for more than 70% of China's . Water chestnuts are not only juicy, sweet and nutritious, but also have certain medicinal value. It is an excellent fruit and vegetable food with both medicine and food. It has been known as "Jiangnan ginseng" since ancient times. Traditional Chinese medicine believes that water chestnuts are cold in nature and sweet in taste, have the effects of clearing away heat, reducing phlegm, and eliminating ac...

Claims

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Application Information

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IPC IPC(8): A61K36/89A61P31/04A61P31/12A61K125/00
Inventor 罗杨合解庆林谢复青韦飞梅
Owner HEZHOU UNIV
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