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Method for producing waste liquid separated puerarin by the aid of pueraria starch

A technology for the separation of puerarin starch and waste liquid, applied in the direction of organic chemistry, etc., can solve the problems of low puerarin content, difficult filtration, affecting the production of puerarin, etc., and achieve the effect of large adsorption capacity and high separation purity

Inactive Publication Date: 2017-12-29
国农农业股份有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] At present, the extraction and separation of puerarin from pueraria is mostly directly carried out by boiling raw materials or alcohol heat reflux extraction technology. On the one hand, this method causes a large amount of puerarin starch in the raw material to be wasted. Starch gelatinization due to high temperature during boiling or alcohol heat reflux extraction makes filtration difficult and seriously affects the production of puerarin
In addition, some researchers proposed to use the method of extracting pueraria starch first, and then separating puerarin from the extract solution. However, there is no reasonable and perfect puerarin starch production line and solution recovery system in China at present, so that the puerarin product obtained by this method has a low puerarin content. , and the extraction rate is extremely low

Method used

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  • Method for producing waste liquid separated puerarin by the aid of pueraria starch

Examples

Experimental program
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Effect test

example 1

[0041] Take by weighing 300 kg of fresh Pueraria lobata, use the paddle cleaning machine to clean the fresh Pueraria lobata, wash off the silt and other sundries on the fresh Pueraria lobata, and then use the coarse rasp mill and the fine rasp mill to grind the fresh Pueraria lobata to obtain fine Pueraria lobata. powder; use a centrifugal sieve to separate pueraria fine powder and slag slurry to remove impurities such as coarse fibers to obtain a starch slurry solution; use a vacuum dehydrator to dehydrate the starch slurry solution to obtain wet starch and dehydration liquid, and use a drying system to dry the wet starch. Dry to obtain kudzu root starch; use a double-effect concentrator to concentrate the dehydrated liquid to obtain a concentrated dehydrated liquid, boil the concentrated dehydrated liquid for 10 minutes, and then filter to remove high-temperature deformed substances such as protein to obtain a crude filtrate; use a plate frame Filter the coarse filtrate to ob...

example 2

[0043] Take by weighing 350kg of fresh Pueraria lobata, utilize the paddle cleaning machine to clean the fresh Pueraria lobata, wash off the silt and other sundries on the fresh Pueraria lobata, then utilize the coarse rasp mill and the fine rasp mill to grind the fresh Pueraria lobata to obtain fine Pueraria lobata. powder; use a centrifugal sieve to separate pueraria fine powder and slag slurry to remove impurities such as coarse fibers to obtain a starch slurry solution; use a vacuum dehydrator to dehydrate the starch slurry solution to obtain wet starch and dehydration liquid, and use a drying system to dry the wet starch. Dry to obtain kudzu root starch; use double-effect concentrator to concentrate the dehydration liquid to obtain concentrated dehydration liquid, boil the concentrated dehydration liquid for 12 minutes, and then filter to remove high-temperature deformation substances such as protein to obtain crude filtrate; Filter the coarse filtrate to obtain the fine f...

example 3

[0045]Take by weighing 400kg of fresh Pueraria lobata, use the paddle cleaning machine to clean the fresh Pueraria lobata, wash off the silt and other sundries on the fresh Pueraria lobata, then use the coarse rasp mill and the fine rasp mill to grind the fresh Pueraria lobata, to obtain fine Pueraria lobata. powder; use a centrifugal sieve to separate pueraria fine powder and slag slurry to remove impurities such as coarse fibers to obtain a starch slurry solution; use a vacuum dehydrator to dehydrate the starch slurry solution to obtain wet starch and dehydration liquid, and use a drying system to dry the wet starch. Dry to obtain kudzu root starch; use a three-effect concentrator to concentrate the dehydrated liquid to obtain a concentrated dehydrated liquid, boil the concentrated dehydrated liquid for 15 minutes, and then filter to remove high-temperature deformed substances such as protein to obtain a crude filtrate; use a plate frame Filter the coarse filtrate to obtain t...

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Abstract

The invention provides a method for producing waste liquid separated puerarin by the aid of pueraria starch. The method includes: cleaning fresh pueraria lobata and grinding the same to obtain fine pueraria lobata powder; performing slag-slurry separation on the fine pueraria lobata powder to obtain a starch solution; dehydrating the starch solution to obtain green starch and dehydrated liquid and drying the green starch to obtain the pueraria starch; concentrating the dehydrated liquid, boiling the concentrated dehydrated liquid prior to filtering the same to obtain a rough filtrate; filtering the rough filtrate to obtain a fine filtrate; adsorbing the fine filtrate with a large-pore resin adsorption column and then performing extraction with normal butanol to obtain a normal butanol extract; concentrating the normal butanol extract, adding in glacial acetic acid, and then performing crystallization to obtain a crystallized product; centrifuging the crystallized product to obtain a puerarin crystal; recrystalizing the puerarin crystal to obtain a puerarin product. By the arrangement, the puerarin product with the puerarin of 95% to 100% in content can be obtained.

Description

technical field [0001] The invention relates to the field of medicine and health food preparation, in particular to a method for separating puerarin from pueraria starch production waste liquid. Background technique [0002] Pueraria pueraria is the dried root of Puerariathomsonii Benth, a leguminous plant. Pueraria genus is distributed in all provinces except Xinjiang, Tibet and Qinghai in my country. Kudzu root contains a lot of high-quality starch, essential amino acids (lysine, methionine, phenylalanine, isoleucine, leucine, etc.) and trace elements (selenium, zinc, manganese, germanium, etc.), and also contains a certain amount of flavonoids, such as daidzein (daldzein), daidzin (daidziun), puerarin, puerarin-7-xyloside (puerarin-7-xy-loside) and other substances. [0003] Scientific studies have shown that puerarin has the effects of lowering blood pressure, slowing down heart rate, dilating coronary vessels, improving microcirculation, inhibiting arteriosclerosis, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D407/04C08B30/04
CPCC07D407/04C08B30/04
Inventor 宋新生
Owner 国农农业股份有限公司
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