CN109576324A - A kind of astragalus polyose and its biological extraction method - Google Patents

A kind of astragalus polyose and its biological extraction method Download PDF

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CN109576324A
CN109576324A CN201811371751.9A CN201811371751A CN109576324A CN 109576324 A CN109576324 A CN 109576324A CN 201811371751 A CN201811371751 A CN 201811371751A CN 109576324 A CN109576324 A CN 109576324A
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decoction
radix astragali
ratio
astragalus polyose
synthase
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张沛
杨国辉
刘冬
王德功
李卓伟
周岩
田俊岭
魏丽娟
魏永辉
孔瑞岗
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HEBEI YUANZHENG PHARMACEUTICAL CO Ltd
Hebei Yuanzheng Hemu Pharmaceutical Co Ltd
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HEBEI YUANZHENG PHARMACEUTICAL CO Ltd
Hebei Yuanzheng Hemu Pharmaceutical Co Ltd
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    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/14Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
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    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/04Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P39/00Processes involving microorganisms of different genera in the same process, simultaneously

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Abstract

The present invention relates to a kind of astragalus polyose and its biological extraction method, the biology extraction method includes: by Radix Astragali grinding and sieving, and three kinds of addition cellulase, hemicellulase and pectase group synthase are digested, then decocted again, merges decoction liquor;And be inoculated with bacillus subtilis in the dregs of a decoction after decoction and ferment with lactic acid bacteria, it is decocted again after fermentation, merges all decoction liquors, be drying to obtain astragalus polyose after the cleaning of 95% ethyl alcohol is added after concentration alcohol precipitation.This method is greatly improved the yield of astragalus polyose, utilize the single-minded high efficiency of enzyme and the biological nature of biofermentation, the extraction of Radix Astragali is maximized, pollution caused by the discharge such as soda acid organic solvent is avoided simultaneously, the last remaining dregs of a decoction can be used as organic fertilizer material, realize the environmentally protective of production process.

Description

A kind of astragalus polyose and its biological extraction method
Technical field
The present invention relates to technical field of polysaccharide extraction, and in particular to a kind of astragalus polyose and its biological extraction method.
Background technique
Radix Astragali is the dry root of astragalus mongholicus or astragalus membranaceus of leguminous plant.Principle active component has polysaccharide, flavones, soap Glycosides, amino acid etc. have solid gas rising Yang, inducing diuresis for removing edema, pus draining and toxin expelling and other effects.Astragalus polyose contained therein by galactolipin, Glucose, rhamnose, arabinose, glucuronic acid and galacturonic acid etc. are polymerized.Now studies have shown that astragalus polyose With enhancing immunity of organisms, adjust the performances such as blood glucose, anti-aging.
Cellulose be by glucose group at macromolecular polysaccharide, be usually incorporated in one with hemicellulose, pectin, lignin It rises, plant cell wall is made of cellulose, hemicellulose, lignin etc., and wherein principal structural component is cellulose, and cellulose squeezes It is not soluble in water, and general organic solvent is not dissolved in, under normal temperature condition, Nature comparison is stablized, and the active principle in plant is big All it is present in cell wall, since the presence of cellulose substances considerably increases extraction rate and recovery rate.Cellulase can Cellulosic molecule is acted on, which can be digested and be discharged for small-molecule substance to destroy plant cell wall composition The effective component wrapped up by cell wall accelerates the process extracted.But due to the complexity of this body structure of plant, enzymatic hydrolysis is only capable of again To a certain extent improve effective component recovery rate, still can some can remain in the dregs of a decoction, then carry out profitable strain without Aerobe fermentation, second extraction, while being by dregs of a decoction fermentation can feeding feed stuff.Chinese patent CN 107698692A discloses a kind of Huang The extracting method of astragalus polysaccharides is concentrated alcohol precipitation by ultrasonic extraction after hot bath heating, highly basic processing and obtains astragalus polyose.It is Chinese special Sharp CN 105693879A discloses a kind of extracting method of astragalus polyose, by the way that, through high pressure explosion, assisting ultrasonic is shaken after enzymatic hydrolysis It swings, prepares astragalus polyose.
Existing frequently-used astragalus polyose extracting method alkali alcohol deposition method, buck extraction method, ultrasonic extraction and high pressure, microwave mention It follows the example of, the extracted amount of astragalus polyose can be improved to a certain extent, but the use of soda acid not only improves extraction cost, also It will increase environmental pressure, subsequent processing steps are cumbersome, and latter two method has special requirement to instrument and equipment, and extraction process energy consumption increases Add.
Summary of the invention
The purpose of the present invention is to provide a kind of modes combined using zymotechnic and fermentation technique, extract from Radix Astragali The astragalus polyose that the biological extraction method and this method of polysaccharide are extracted.
Cellulase is added, three kinds of group synthase of hemicellulase and pectase carry out in Radix Astragali grinding and sieving by the present invention Enzymatic hydrolysis, is then decocted again, merges decoction liquor;And in the dregs of a decoction after decoction, be inoculated with bacillus subtilis and lactic acid bacteria into It goes and ferments, decocted again after fermentation, merge all decoction liquors, be concentrated after alcohol precipitation plus be drying to obtain Radix Astragali after washes of absolute alcohol and is more Sugar.
The dregs of a decoction obtained by the above method can be used as organic fertilizer for broiler breeding, and this method is greatly improved astragalus polyose Yield is maximized the extraction of Radix Astragali using the single-minded high efficiency of enzyme and the biological nature of biofermentation, while avoiding soda acid Organic solvent etc. pollutes caused by discharging, and the last remaining dregs of a decoction can be used as organic fertilizer material, realizes the green of production process Environmental protection.
Specifically, biology extraction method of the present invention specifically comprises the following steps:
1) smashed Radix Astragali is first digested using group synthase, then is handled through decoction, separate decoction liquor and the dregs of a decoction;
Wherein, described group of synthase is the combination of cellulase, hemicellulase and pectase;
2) using the dregs of a decoction as fermentation substrate, tunning is obtained after bacillus subtilis and lactobacillus-fermented, then pass through Decoction processing, collects decoction liquor;
3) decoction liquor for merging step 1) and step 2), is separated to obtain the astragalus polyose.
Preferably, after the Radix Astragali crushes, 30~50 meshes is crossed, are then digested again.
In the prior art, most to carry out enzymolysis processing using a kind of biological enzyme, then often obtained polysaccharide is less, And ingredient is single.The present invention has found to digest using a group synthase by research, can effectively obtain that nutritional ingredient is uniform, yield is high Astragalus polyose.Also, the application, can be maximum by showing the amount ratio of three on the basis of using group synthase Guarantee its said effect.
Cellulase, hemicellulase and the pectase that described group of synthase is mass ratio 1:1:2~2:2:1;
Preferably, cellulase, hemicellulase and pectase that described group of synthase is mass ratio 2:2:1.
And it is 150~250:1 that the present invention, which further defines the Radix Astragali and the weight ratio of the cellulase,;When described When weight ratio is 200:1, the effect of enzymatic hydrolysis is more prominent.
In order to advanced optimize hydrolysis result, the present invention is digested using following condition;Specifically: by the Radix Astragali and Described group of synthase add to pH value be 4.5~5.5 buffer in, 45~55 DEG C at a temperature of, digest 1~3h;
Wherein, the Radix Astragali is added in the buffer in the ratio that solid-liquid ratio is 1:1.5~1:5 (g/ml).
Preferably, the Radix Astragali is added in the buffer in the ratio that solid-liquid ratio is 1:3.
Preferably, the pH value of the buffer is 4.5~5, most preferably 4.8.It is preferred that being buffered in the following way Liquid, specifically: 4.8 ± 0.053g of citric acid, sodium citrate 7.94g, constant volume to 1000ml.
Preferably, the time of the enzymatic hydrolysis is 1.5~2.5h, most preferably 2h.
The biological extraction method of zymolysis technique and fermentation technique that the present invention uses combined, on the basis of optimization enzymatic hydrolysis On, the dregs of a decoction obtained targetedly use bacillus subtilis and combining for lactic acid bacteria to carry out at fermentation after the enzymatic hydrolysis Reason.Wherein, the inoculative proportion of the bacillus subtilis and lactic acid bacteria is 1:0.5~2;
Preferably, the inoculative proportion is 1:1.5~2, most preferably 1:2;
Bacillus subtilis and lactic acid bacteria of the present invention obtain in such a way that this field is conventional;It is preferred that using as follows Mode:
Bacillus subtilis strain is seeded in MNB fluid nutrient medium, 100~200r/min shaking table, 32~38 DEG C are placed in Under, 20~30h is cultivated, then diluting conciliation bacterial concentration with sterile saline is 10^7cfu/ml.
By lactobacillus inoculum in MRS fluid nutrient medium, it is placed in 100~200r/min shaking table, at 35~40 DEG C, culture 40 ~55h, diluting conciliation bacterial concentration with sterile saline is 10^7cfu/ml.
Wherein, when the inoculum concentration of the bacillus subtilis and lactic acid bacteria is respectively 3%~6%, 3%~6%, institute's needle Pair the specific dregs of a decoction, ferment obtain tunning in, polyoses content is considerable.Particularly preferably, the bacillus subtilis and The inoculum concentration of lactic acid bacteria is 3%, 6%.
In order to advanced optimize ferment effect, the present invention uses following fermentation condition: by the dregs of a decoction be dried to moisture for 40%~50%, it is inoculated with the bacillus subtilis and lactic acid bacteria;It is subsequently placed in 28 DEG C~38 DEG C of temperature, closed shaking table training 3~5d is supported, tunning is obtained;
Preferably, the inoculative proportion of the bacillus subtilis and lactic acid bacteria is 1:2, and fermentation temperature is 35 DEG C, closed to shake Bed incubation time is 4d.
Preferably, the dregs of a decoction drying moisture content is 45%.
The present invention after enzymatic hydrolysis and sends out to guarantee the utilizability and the higher astragalus polyose of purity of the subsequent dregs of a decoction It is handled after ferment using decoction.
In step 1), the decoction processing specifically: after the reaction solution inactivation treatment after enzymatic hydrolysis, in mass, be divided to two The secondary water that 6 times of amounts for being equivalent to the Radix Astragali are added decocts 0.5~1h, and filtering merges decoction liquor;
In step 2), the decoction processing specifically: in mass, be equivalent to being added in two portions in the tunning The water of 6 times of Radix Astragali amounts decocts 0.5~1h, and filtering merges decoction liquor.
After the present invention merges the decoction liquor of two steps, further progress purification processes;In order to cooperate biology of the invention to extract Method is purified by the way of alcohol precipitation.
Currently preferred, the decoction liquor merges, and conventional method can be used and obtain the astragalus polyose.The present invention is preferred Using being first concentrated, then alcohol precipitation.
The alcohol precipitation is carried out using this field usual manner, particularly preferably in the following way: the alcohol precipitation specifically: will Concentrate and 95% ethyl alcohol according to volume ratio 1:3 (V/V) ratio after mixing, stand for 24 hours, 3000r/min centrifugation repeats The step is three times to get astragalus polyose.
The present invention provides a kind of prioritization scheme on the basis of optimizing each step and condition, and the biology extraction method includes Following steps:
1) buffer that pH value is 4.5~5.5 is added in the ratio that smashed Radix Astragali is 1:1.5~1:5 in solid-liquid ratio In, add described group of synthase, 45~55 DEG C at a temperature of, digest 1~3h;It is handled again through decoction, separates decoction liquor and the dregs of a decoction, Collect the decoction liquor;
Wherein, the combination of described group of synthase is mass ratio 2:2:1 cellulase, hemicellulase and pectase;It is described The weight ratio of Radix Astragali and the cellulase is 200:1.
2) dregs of a decoction are dried to moisture content is 40%~50%, then by described by bacillus subtilis and lactic acid bacteria It is inoculated with by 3%, 6% inoculum concentration;It is subsequently placed in 28 DEG C~38 DEG C of temperature, closed 3~5d of shaking table culture is sent out Ferment product;
3) merge the decoction liquor of step 1) and step 2), concentration, alcohol precipitation is to get the astragalus polyose.
The present invention provides a kind of methods for extracting astragalus polyose, combine extraction Radix Astragali more using zymotechnic and fermentation technique Sugar, action condition temperature release the polysaccharide in Radix Astragali maximumlly, and obtained polysaccharide yield is high, active good, production process Addition soda acid and special installation are not needed, it is simple and easy, it is easy to operate, and the dregs of a decoction after finally fermentation extraction polysaccharide can be direct For feeding, reduces the subsequent processing work of the dregs of a decoction, while fully and rationally using resource, protect environment, reach green The purpose of production.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
The bacillus subtilis and lactic acid bacteria used in following examples obtains in the following way: by bacillus subtilis It kind is seeded in MNB fluid nutrient medium, is placed in 100~200r/min shaking table, at 32~38 DEG C, cultivates 20~30h, then use nothing It is 10^7cfu/ml that bacterium normal saline dilution, which reconciles bacterial concentration,.
By lactobacillus inoculum in MRS fluid nutrient medium, it is placed in 100~200r/min shaking table, at 35~40 DEG C, culture 40 ~55h, diluting conciliation bacterial concentration with sterile saline is 10^7cfu/ml.
Buffer used in following examples: 4.8 ± 0.053g of citric acid, sodium citrate 7.94g are settled to 1000ml。
Embodiment 1
The present embodiment provides a kind of biological extraction methods of astragalus polyose, include the following steps:
1) smashed Radix Astragali is crossed into 40 meshes, the ratio for being 1:3 in solid-liquid ratio is added in the buffer that pH value is 4.8, Be added cellulase, hemicellulase and pectase group synthase, 50 DEG C at a temperature of, digest 2h;
Wherein, the additive amount of the cellulase, hemicellulase and pectase be respectively the astragalus weight 5 ‰, 5‰,2.5‰;
2) by 100 DEG C of inactivation 15min of reaction solution after enzymatic hydrolysis, in two times plus 6 times of amount water of the Radix Astragali decoct 0.5h, mistake Filter obtains decoction liquor and the dregs of a decoction, merges decoction liquor, and decoction liquor concentration sealing cryo-conservation is stand-by;
3) dregs of a decoction are dried to moisture content is 45%, then presses bacillus subtilis and lactic acid bacteria respectively for described 3%, 6% inoculum concentration is inoculated with;It is subsequently placed in 35 DEG C of temperature, closed shaking table culture 4d, obtains tunning;
4) 6 times of amount water of the Radix Astragali are added to decoct 0.5~1h in two times the tunning, filtering merges decoction liquor, Concentration is stand-by;
5) decoction liquor is added the decoction liquor after merging step 2) and step 4) concentration in the ratio of 1:3 (V/V) 95% ethyl alcohol carries out alcohol precipitation, is centrifuged after standing overnight, and repeats this step 2~3 time, is drying to obtain astragalus polyose.
It after polysaccharide is completely dissolved with water, is detected using Phenol sulfuric acid procedure, the yield of the astragalus polyose is 30.71%.
Embodiment 2
The present embodiment provides a kind of biological extraction methods of astragalus polyose, include the following steps:
1) smashed Radix Astragali is crossed into 40 meshes, the buffer that pH value is 4.5 is added in the ratio for being 1:1.5 in solid-liquid ratio In, be added cellulase, hemicellulase and pectase group synthase, 55 DEG C at a temperature of, digest 1h;
Wherein, the additive amount of the cellulase, hemicellulase and pectase is respectively the astragalus weight 7.5‰,5‰,2.5‰;
2) by 100 DEG C of inactivation 15min of reaction solution after enzymatic hydrolysis, in two times plus 6 times of amount water of the Radix Astragali decoct 0.5h, mistake Filter obtains decoction liquor and the dregs of a decoction, merges decoction liquor, and decoction liquor concentration sealing cryo-conservation is stand-by;
3) dregs of a decoction are dried to moisture content is 45%, then presses bacillus subtilis and lactic acid bacteria respectively for described 6%, 3% inoculum concentration is inoculated with;It is subsequently placed in 28 DEG C of temperature, closed shaking table culture 5d, obtains tunning;
4) 6 times of amount water of the Radix Astragali are added to decoct 0.5~1h in two times the tunning, filtering merges decoction liquor, Concentration is stand-by;
5) decoction liquor is added the decoction liquor after merging step 2) and step 4) concentration in the ratio of 1:3 (V/V) 95% ethyl alcohol carries out alcohol precipitation, is centrifuged after standing overnight, and repeats this step 2~3 time, is drying to obtain astragalus polyose.
It after polysaccharide is completely dissolved with water, is detected using Phenol sulfuric acid procedure, the yield of the astragalus polyose is 28.65%.
Embodiment 3
The present embodiment provides a kind of biological extraction methods of astragalus polyose, include the following steps:
1) smashed Radix Astragali is crossed into 40 meshes, the ratio for being 1:5 in solid-liquid ratio is added in the buffer that pH value is 5.5, Be added cellulase, hemicellulase and pectase group synthase, 45 DEG C at a temperature of, digest 3h;
Wherein, the additive amount of the cellulase, hemicellulase and pectase is respectively the astragalus weight 2.5‰,2.5‰,5‰;
2) by 100 DEG C of inactivation 15min of reaction solution after enzymatic hydrolysis, in two times plus 6 times of amount water of the Radix Astragali decoct 0.5h, mistake Filter obtains decoction liquor and the dregs of a decoction, merges decoction liquor, and decoction liquor concentration sealing cryo-conservation is stand-by;
3) dregs of a decoction are dried to moisture content is 45%, then presses bacillus subtilis and lactic acid bacteria respectively for described 4%, 4% inoculum concentration is inoculated with;It is subsequently placed in 38 DEG C of temperature, closed shaking table culture 3d, obtains tunning;
4) 6 times of amount water of the Radix Astragali are added to decoct 0.5~1h in two times the tunning, filtering merges decoction liquor, Concentration is stand-by;
5) decoction liquor is added the decoction liquor after merging step 2) and step 4) concentration in the ratio of 1:3 (V/V) 95% ethyl alcohol carries out alcohol precipitation, is centrifuged after standing overnight, and repeats this step 2~3 time, is drying to obtain astragalus polyose.
It after polysaccharide is completely dissolved with water, is detected using Phenol sulfuric acid procedure, the yield of the astragalus polyose is 29.10%.
Comparative example 1
This comparative example provides a kind of biological extraction method of astragalus polyose, and the difference with embodiment 1 is only that, group synthase replacement For " cellulase list enzyme ".
1) smashed Radix Astragali is crossed into 40 meshes, the ratio for being 1:3 in solid-liquid ratio is added in the buffer that pH value is 4.8, Be added cellulase, hemicellulase and pectase group synthase, 50 DEG C at a temperature of, digest 2h;
Wherein, the cellulase additive amount is the 5 ‰ of the astragalus weight;
2) by 100 DEG C of inactivation 15min of reaction solution after enzymatic hydrolysis, in two times plus 6 times of amount water of the Radix Astragali decoct 0.5h, mistake Filter obtains decoction liquor and the dregs of a decoction, merges decoction liquor, and decoction liquor concentration sealing cryo-conservation is stand-by;
3) dregs of a decoction are dried to moisture content is 45%, then presses bacillus subtilis and lactic acid bacteria respectively for described 3%, 6% inoculum concentration is inoculated with;It is subsequently placed in 35 DEG C of temperature, closed shaking table culture 4d, obtains tunning;
4) 6 times of amount water of the Radix Astragali are added to decoct 0.5~1h in two times the tunning, filtering merges decoction liquor, Concentration is stand-by;
5) decoction liquor is added the decoction liquor after merging step 2) and step 4) concentration in the ratio of 1:3 (V/V) 95% ethyl alcohol carries out alcohol precipitation, is centrifuged after standing overnight, and repeats this step 2~3 time, is drying to obtain astragalus polyose.
It after polysaccharide is completely dissolved with water, is detected using Phenol sulfuric acid procedure, the yield of the astragalus polyose is 25.18%.
Comparative example 2
This comparative example provides a kind of biological extraction method of astragalus polyose, the difference from embodiment 1 is that, only use enzyme digestion reaction After extract,
1) smashed Radix Astragali is crossed into 40 meshes, the ratio for being 1:3 in solid-liquid ratio is added in the buffer that pH value is 4.8, Be added cellulase, hemicellulase and pectase group synthase, 50 DEG C at a temperature of, digest 2h;
Wherein, the additive amount of the cellulase, hemicellulase and pectase be respectively the astragalus weight 5 ‰, 5‰,2.5‰;
2) by 100 DEG C of inactivation 15min of reaction solution after enzymatic hydrolysis, in two times plus 6 times of amount water of the Radix Astragali decoct 0.5h, mistake Filter obtains decoction liquor and the dregs of a decoction, merges decoction liquor,
5) decoction liquor is added to 95% ethyl alcohol in the ratio of 1:3 (V/V), alcohol precipitation is carried out, is centrifuged after standing overnight, This step 2~3 time are repeated, astragalus polyose is drying to obtain.
It after polysaccharide is completely dissolved with water, is detected using Phenol sulfuric acid procedure, the yield of the astragalus polyose is 22.37%.
Although above having used general explanation, specific embodiment and test, the present invention is made to retouch in detail It states, but on the basis of the present invention, it can be made some modifications or improvements, this is apparent to those skilled in the art 's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed Range.

Claims (10)

1. a kind of biological extraction method of astragalus polyose, which comprises the steps of:
1) smashed Radix Astragali is first digested using group synthase, then is handled through decoction, separate decoction liquor and the dregs of a decoction;
Wherein, described group of synthase is the combination of cellulase, hemicellulase and pectase;
2) using the dregs of a decoction as fermentation substrate, tunning is obtained after bacillus subtilis and lactobacillus-fermented, then through decocting Decoction liquor is collected in processing;
3) merge decoction liquor obtained by step 1) and step 2), separated to obtain astragalus polyose.
2. biology extraction method according to claim 1, which is characterized in that described group of synthase is mass ratio 1:1:2~2:2:1 Cellulase, hemicellulase and pectase;
Preferably, cellulase, hemicellulase and pectase that described group of synthase is mass ratio 2:2:1.
3. biology extraction method according to claim 1 or 2, which is characterized in that the weight of the Radix Astragali and the cellulase Amount is than being 150~250:1;
Preferably, the weight ratio is 200:1.
4. described in any item biological extraction methods according to claim 1~3, which is characterized in that the enzymatic hydrolysis specifically: will be described Radix Astragali and described group of synthase add to pH value be 4.5~5.5 buffer in, 45~55 DEG C at a temperature of, digest 1~3h;
Wherein, the Radix Astragali is added in the buffer in the ratio that solid-liquid ratio is 1:1.5~1:5;
Preferably, the enzymatic hydrolysis specifically: add to the Radix Astragali and described group of synthase in the buffer that pH value is 4.8,45 At a temperature of~55 DEG C, 2h is digested;
Wherein, the Radix Astragali is added in the buffer in the ratio that solid-liquid ratio is 1:3.
5. biology extraction method according to any one of claims 1 to 4, which is characterized in that the bacillus subtilis and cream The inoculative proportion of sour bacterium is 1:0.5~2;
Preferably, the inoculative proportion is 1:2.
6. described in any item biological extraction methods according to claim 1~5, which is characterized in that the bacillus subtilis and cream The inoculum concentration of sour bacterium is respectively 3%~6%, 3%~6%;
Preferably, the inoculum concentration of the bacillus subtilis and lactic acid bacteria difference 3%, 6%.
7. described in any item biological extraction methods according to claim 1~6, which is characterized in that fermentation described in step 2) is specific Are as follows: it is 40%~50% that the dregs of a decoction, which are dried to moisture, inoculates the bacillus subtilis and lactic acid bacteria;It is subsequently placed in 28 DEG C~38 DEG C of temperature in, closed 3~5d of shaking table culture obtains tunning.
8. described in any item biological extraction methods according to claim 1~7, which is characterized in that in step 1), the decoction processing Specifically: after the reaction solution inactivation treatment after enzymatic hydrolysis, in mass, it is added thereto is equivalent to 6 times of the Radix Astragali in two times The water of amount decocts 0.5~1h, and filtering merges decoction liquor;
And/or in step 2), the decoction processing specifically: in mass, be added in two portions in Xiang Suoshu tunning quite 0.5~1h is decocted in the water that 6 times of the Radix Astragali are measured, filtering merges decoction liquor.
9. described in any item biological extraction methods according to claim 1~8, which comprises the steps of:
1) smashed Radix Astragali is added in the buffer that pH value is 4.5~5.5 in the ratio that solid-liquid ratio is 1:1.5~1:5, is added Add described group of synthase, 45~55 DEG C at a temperature of, digest 1~3h;It is handled again through decoction, separates decoction liquor and the dregs of a decoction;
Wherein, the combination of described group of synthase is mass ratio 2:2:1 cellulase, hemicellulase and pectase;The Radix Astragali Weight ratio with the cellulase is 200:1;
2) by the dregs of a decoction be dried to moisture content be 40%~50%, then by 3%, 6% inoculum concentration be inoculated with thereto described in Bacillus subtilis and lactic acid bacteria;It is subsequently placed in 28 DEG C~35 DEG C of temperature, closed 3~5d of shaking table culture, obtains fermentation and produce Object;
3) merge decoction liquor obtained by step 1) and step 2), concentration, alcohol precipitation is to get the astragalus polyose;
Preferably, the alcohol precipitation specifically: by concentrate and 95% ethyl alcohol according to volume ratio 1:3 ratio after mixing, It stands for 24 hours, 3000r/min centrifugation repeats the step three times to get astragalus polyose.
10. astragalus polyose made from biology extraction method according to any one of claims 1 to 9.
CN201811371751.9A 2018-11-15 2018-11-15 A kind of astragalus polyose and its biological extraction method Pending CN109576324A (en)

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CN114606287A (en) * 2022-04-22 2022-06-10 乔金星 Method for improving extraction amount of polysaccharide and flavone from dogbane leaves and fermentation tank thereof

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