CN105663195B - A kind of extracting method of ginsenoside - Google Patents

A kind of extracting method of ginsenoside Download PDF

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CN105663195B
CN105663195B CN201610236817.8A CN201610236817A CN105663195B CN 105663195 B CN105663195 B CN 105663195B CN 201610236817 A CN201610236817 A CN 201610236817A CN 105663195 B CN105663195 B CN 105663195B
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ginsenoside
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陈火林
万学斌
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Jiangxi Zhangshu City Qingren Health Products Co Ltd
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    • A61K2236/30Extraction of the material
    • A61K2236/33Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones
    • A61K2236/333Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones using mixed solvents, e.g. 70% EtOH
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/50Methods involving additional extraction steps
    • A61K2236/55Liquid-liquid separation; Phase separation

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Abstract

The present invention relates to a kind of general ginsenoside rich in ginseng sapoglycoside Rg 3 and its extracting method.Ginsenoside Rb1, Rb2, Rb3, RC, Rg3 mass percent are respectively in the extract:1.0% 3.0%, 0.2% 1.0%, 0.5 2.5%, 0.5% 2.5%, 28% 40%.This method comprises the following steps:Ginseng is extracted using microwave loss mechanisms using ethanol as Extraction solvent, extracts in solution and adds a certain amount of vitamin C, the crude extract of general ginsenoside is obtained by the extracting through microwave heating of certain time;Using macroreticular resin absorbing method, further enriching and purifying obtains general ginsenoside extract to the crude extract of general ginsenoside.

Description

A kind of extracting method of ginsenoside
Technical field
The present invention relates to a kind of ginsenoside and its extracting method, in particular, it is related to a kind of rich in the rare soap of ginseng The ginsenoside and its extracting method of glycosides, it is especially a kind of to make use of being rich in for Catalyzed by Vitamin C technology and microwave heating method The rare saponin(e Rg of ginseng3General ginsenoside extracting method.
Background technology
Ginseng (Panax ginseng C.A.Mey) is the root and rhizome of araliaceae ginseng plant's ginseng, first recorded in《God Agriculture book on Chinese herbal medicine warp》, top grade is classified as, is traditional rare medicinal herbs, the king in medicine is described as, with reinforcing vital energy, prevent prolapse is promoted the production of body fluid, is pacified Effect of god.Cure mainly the deficiency of vital energy to be intended to take off, internal lesion caused by overexertion is deficient, burnout, indigestion and loss of appetite, vomit, lingering diarrhea of defecating, shortness of breath, spontaneous perspiration, chronic cough and dyspnea of deficiency type disappears Yearningly, insomnia, palpitates with fear, forgetful, impotence, frequent micturition, the card of all deficiency of vital energy Tianjin wounds such as uterine bleeding.It is used as traditional rare Chinese medicine, ginseng tool There are a variety of definite pharmacological actions, such as anti-aging, antifatigue, anti-oxidant, antitumor, anti-diabetic.
Chemical composition contained by ginseng includes ginsenoside, carbohydrate, amino acid, vitamin, protein, polypeptide, organic acid, fat Soluble components and trace element etc..Modern medicine proves, ginsenoside is a mostly important class physiologically active thing in ginseng Matter, with regulation central nervous system, improve cardiovascular and hemopoietic system, regulation internal system, improve immunity, it is antifatigue And the effect such as anticancer.Monomer saponin kind more than 40 is had been found that in ginseng, its content accounts for the 4% of ginseng dry mass, and ginseng Total saponin content accounts for the 2.0%-7.0% of dry mass in main root.Ginsenoside is the triterpene being formed by connecting by sugar chain and aglycon Class compound.Triterpenoids sapogenins saponin(e and dammarane type four-ring triterpenoid saponin are divided into according to saponin(e structure.With up to agate Alkane type tetracyclic triterpene saponin(e being characterized property composition, dammarane type four-ring triterpenoid saponin is different according to aglycone structure, can be divided into protoplast Join diol type, such as ginsenoside Rb1、Rb2, RC and Rd;Protopanaxatriol type, such as ginsenoside Re, Rf, Rg1、Rg2Deng.
Research shows, the rare ginsenoside obtained by the selective hydrolysis of sugared aglucon contained main ginseng than in ginseng Saponin(e has more preferable body absorbability and pharmacological activity.Rare ginsenoside and aglycon have more preferable activity, are improving Effect is unique in terms of memory and treatment and prevention of tumour.The absorption of the natural ginseng saponin(e of rich content in the gastrointestinal tract is very poor. Blood concentration is extremely difficult to give full play to the concentration of pharmacological activity in body.Saponin(e needs could quilt after degraded de-glycosylation Absorption of human body is utilized.Diol type saponin(e could enter blood after being hydrolyzed into rare saponin(e.As can be seen here, the generation of ginsenoside Thanking product-secondary saponin and aglycon has stronger activity, is more easy to be absorbed by organisms, and plays drug effect.It is a large amount of prepare secondary glycosides and Aglycon has obvious medical value and market value.
Ginseng sapoglycoside Rg 3 is by former ginsenoside glycol saponins Rb1、Rb2、Rb3, Rc, Rd etc. C-20 positions glycosyl Obtained secondary rare ginsenoside is hydrolyzed, remembers with anticancer, Anti-tumor metastasis, neuroprotection, immunity enhancing, improvement, resist The curative effects such as pressure, anti-wrinkle, in addition ginsenoside Rg3Use, can effectively improve with other cancer therapy drugs or chemotherapy drugs in combination Therapeutic effect, the life quality of raising people to cancer.In the prior art, ginsenoside Rg3Can by ginsenoside acid, It is prepared by the catalyzing hydrolysis such as alkali, enzyme.Sour water solution is ginsenoside Rg3The method being commonly used in preparation, mainly utilizes hydrochloric acid, sulphur Acid, acetic acid, formic acid, tartaric acid etc. are used as catalyst.But, above-mentioned inorganic acid is easily caused excessive hydrolysis due to acid strong, and right The corrosivity of equipment is strong and the shortcomings of there is spent acid discharge, is unfavorable for the production of industrialization.Formic acid is acid appropriate but volatile, There is infringement to human body, environment, tartaic acid is weaker, be difficult to remove.
For a long time, people are directed to finding a kind of more suitable for industrialization production, can extract and obtain from ginseng High activity, low sugar base ginsenoside method.At present, method used to PDS mostly by carrying out enzyme hydrolysis Or acid-hydrolyzed method prepares ginsenoside, have not seen direct by the optimization of extraction conditions in the extraction process of ginsenoside Promote the method for the generation of the rare saponin(e of ginseng, use vitamin C as catalyst to hydrolyze acquisition rich in dilute while having not seen There is ginsenoside Rg3Ginsenoside extracting method.
The content of the invention
It is an object of the invention to solve above-mentioned technical problem, a kind of operation letter is provided by a series of condition optimizing Just, production cost is low, production efficiency is high is rich in ginsenoside Rg3General ginsenoside extracting method, extraction process use Microwave heating method, catalyst is used as by the use of vitamin C.
The present invention develops new catalyst vitamin C, using vitamin C as catalyst general ginsenoside extraction During, diol saponin is directly converted into rare ginsenoside Rg3, people is rich in notable physiologically active so as to obtain Join saponin(e Rg3General ginsenoside extract.Using vitamin C as catalyst, reaction condition is gentle, does not corrode instrument and equipment, Environment will not be polluted.Vitamin C is harmless and necessary to being human body, and intake in appropriate amount is beneficial to maintain body Every function of organization, therefore, in the post processor of extract, for ascorbic separation without excessively strict, this Point make it that extraction process is more simple and easy to do, with wide market application foreground.
The technical scheme is that:
One kind is rich in ginsenoside Rg3General ginsenoside extract, it is characterised in that ginsenoside in the extract Rb1、Rb2、Rb3、RC、Rg3Mass percent be respectively:1.0%-3.0%, 0.2%-1.0%, 0.5-2.5%, 0.5%- 2.5%th, 28%-40%.
One kind is rich in ginsenoside Rg3General ginsenoside extract preparation method, it is characterised in that include following step Suddenly:
(1) ginseng is extracted using microwave loss mechanisms using ethanol as Extraction solvent, extracts in solution and add necessarily The vitamin C of amount, the crude extract of general ginsenoside is obtained by the extracting through microwave heating of certain time;
(2) using macroreticular resin absorbing method, further enriching and purifying obtains general ginsenoside to the crude extract of general ginsenoside Extract.
Concentration of alcohol described in step (1) is 50%-80%, preferably 60%-70%;It is ascorbic in extract solution Concentration is 0.6-2.0g/100ml;The consumption of ethanol is 8-20 times (ml/g) of ginseng weight.
Ascorbic concentration is preferably 1.2g/100ml in step (1) extract solution.
The consumption of ethanol is preferably 15 times (ml/g) of ginseng weight in step (1).
It is preferred that, the power of Microwave Extraction is 200-600W, more preferably 300W.
It is preferred that Microwave Extraction time be 15-30min, more preferably 20min.
In step (2), the macroreticular resin of absorption saponin(e is eluted respectively with deionized water, ethanol, collect ethanol eluate, subtract Pressure concentration, dry reaction product, i.e. general ginsenoside.
The volume of deionized water used is 3-6BV, and the volume of ethanol is 5-7BV, and concentration is 50%-70%.
Ginsenoside is soluble in water, methanol, ethanol, dissolves in n-butanol, acetic acid and ethyl acetate, insoluble in chloroform, second In ether, benzene.Ethanol is nontoxic, cheap, impurity content is few in extract solution, and present invention selection ethanol is molten as the extraction of ginsenoside Agent.Influence of the concentration of alcohol change to ginsenoside extraction efficiency, the content of total saposins in 70% ethanol extract are investigated Highest, is then gradually reduced, and the preferred concentration of ethanol is 50%-80%.
Microwave be wavelength in the range of 1mm to 1m (frequency 300-300000MHz) electromagnetic wave, positioned at infrared radiating light and Between radio wave, the most frequently used heating frequency is 2450MHz.It has been generally acknowledged that heating of the medium in microwave field has two kinds of machines Reason, i.e. ion conduction mechanism and dipole rotate mechanism.Microwave auxiliary extraction technology is microwave heating and traditional solvent extraction A kind of new extractive technique that method is formed after being combined, makes analyte be separated from sample matrices and enters using microwave heating Solvent, the otherness of microwave ability is absorbed according to the selection of appropriate solvent and different compounds, raising target compound is reached A kind of Novel extraction method of extraction efficiency.Compared with traditional extraction process, microwave―assisted extraction have extraction time it is short, choosing The advantages of selecting property is good, the rate of recovery is high, reagent dosage is few.
The degree that different material absorbs microwave in the electromagnetic field of microwave radiation is different, the electricity of ethanol, water in microwave radiation Material by microwave application is absorbed in magnetic field, microwave radiation energy is converted into heat energy, and then transfers heat to other materials coexisted, from And compared with traditional heating mode, significantly shorten the time of extraction.
Microwave power and extraction time have been investigated, said extracted condition has been optimized, to obtain maximum extracted production Rate.As a result indicate, during from 70% ethanol water (V/V) as Extraction solvent, the power of Microwave Extraction is preferably 200- 600W, more preferably 300w;The time of Microwave Extraction is preferably 15-30 minutes, more preferably 20 minutes.
Vitamin C is added during Microwave Extraction as catalyst, ascorbic consumption has been investigated to ginsenoside Rg3The influence of yield.
Quantitative analysis is carried out to ginsenoside Rb1, Rb2, Rb3, RC, Rg3 by high performance liquid chromatography.Chromatographic condition is such as Under:Lunna NH2Chromatographic column (4.6mm × 150mm, 5 μm);Mobile phase acetonitrile-water gradient;Flow velocity 1.0mLmin-1;Inspection Survey wavelength 203nm;Column temperature:30℃;The μ L of sample size 20.Condition of gradient elution is:Mobile phase acetonitrile (A):Water (B), gradient elution (0-20min, A:25→40;20-33min, A:40→60;33-37min, A:46;37-45min, A:46→50;45-62min, A:50→70;62-65min, A:70→90).
Embodiment
Embodiment 1
Single factor exploration
With the recovery rate of general ginsenoside (quality of general ginsenoside accounts for the percentage of sample gross mass i.e. in extract) Single factor exploration is carried out to concentration of alcohol, consumption, microwave abstracting number of times as index.Obtain the optimum level of each single factor test Respectively concentration of alcohol 70% (V/V), consumption is 15 times (ml/g) of ginseng weight, and extraction times are 2 times.
Orthogonal experiment
To optimize the experiment condition of extracting through microwave heating, in the feelings that above-mentioned concentration of alcohol, consumption, extraction times condition are constant Under condition, microwave power (A) is selected, vitamin C concentration (B), extraction time (C) is used as investigation factor (as shown in table 1), Mei Geyin Element takes three levels, and orthogonal experiment is carried out according to table 2.The extract of acquisition uses macroreticular resin ginseng therein Total saposins, after the elution impurity elimination of 5BV deionized waters, are enriched with general ginsenoside, and use high-efficient liquid phase technique with the ethanol of 7BV 60% The content (W/W) of the Rg3 in general ginsenoside is determined, three factors are analyzed.R values in table 2, it can be seen that each Factor is respectively B to the influence degree of microwave auxiliary extraction ginsenoside recovery rate>A>C, ascorbic concentration influence is most aobvious Write, microwave power takes second place, the influence of extraction time is minimum.It is preferred that scheme be A2B2C2, i.e. microwave power is 300w, vitamin C Concentration is 1.2 (g/100ml), and extraction time is 20 minutes.
The L of table 19(34) orthogonal test factor and level
The orthogonal experiments of table 2
The content analysis of ginsenoside composition in the extract of embodiment 2
Ginsenoside extract A preparation:2.5 grams of samples of Ginseng are weighed, are surpassed at room temperature with 50ml70% (V/V) ethanol Sound is extracted 2 times, and 60 minutes every time, extract solution is recovered under reduced pressure into solvent under the conditions of 40 DEG C, is concentrated as the aqueous solution, is inhaled using macropore Attached resin concentration purifies general ginsenoside, elutes impurity elimination first with 5BV deionized waters, is then enriched with ginseng with the ethanol of 7BV 60% Total saposins, carry out the purifying of saponin(e, elution speed is 1.5ml/min.Ethanol eluate is collected, rotary evaporation removes ethanol in proper amount Afterwards, concentrate is placed in stainless steel disc, in being evaporated in water-bath, 60 DEG C are dried under reduced pressure, and obtain ginsenoside extract A.
Ginsenoside extract B preparation:2.5 grams of samples of Ginseng are weighed, are placed in the extractor of Microwave Extraction Apparatus, are added (V/V) ethanol solutions of 50ml 70% and 0.6 gram of vitamin C, are 300W by extraction power setting, and extraction time is 20 minutes, After the completion of extraction, collect in filtered fluid, filter residue and add (V/V) ethanol solutions of 50ml 70% and 0.6 gram of vitamin C again, together The extraction conditions of sample collects filtrate after the completion of extracting.Filtrate it will merge twice, rotary evaporation to volume is about 20ml, uses concentrated ammonia liquor PH value is adjusted to 7.0, using D101 enriching and purifying macroporous resin general ginsenosides, is gone first with the elution of 5BV deionized waters It is miscellaneous, general ginsenoside is then enriched with the ethanol of 7BV 60%, the purifying of saponin(e is carried out, elution speed is 1.5ml/min.Collect second Alcohol eluen, rotary evaporation is removed after ethanol in proper amount, and concentrate is placed in stainless steel disc, and in being evaporated in water-bath, 60 DEG C depressurize Dry, obtain ginsenoside extract B.
Using ginsenoside Rb in ginsenoside extract A, B obtained by high effective liquid chromatography for measuring1, ginsenoside Rb2、 Ginsenoside Rb3, ginsenoside RC, ginsenoside Rg3Mass percent.
The preparation of mixed reference substance solution:Precision weighs ginsenoside Rb1Reference substance, ginsenoside Rb2Reference substance, ginseng Saponin(e Rb3Reference substance, ginsenoside RC reference substances and ginsenoside Rg3In right amount, it is accurately weighed, it is placed in same 5ml measuring bottles, uses Methanol dissolving and constant volume, are made mixed reference substance solution.
The preparation of need testing solution:
Ginsenoside extract A about 30mg, accurate Cheng Ding are taken, is placed in 10ml measuring bottles, plus methanol dissolving and constant volume, shake It is even, 0.45 μm of filter membrane is crossed, it is continuous to take filtrate, as need testing solution A;
Ginsenoside extract B about 30mg, accurate Cheng Ding are taken, is placed in 10ml measuring bottles, plus methanol dissolving and constant volume, shake It is even, 0.45 μm of filter membrane is crossed, it is continuous to take filtrate, as need testing solution B.
Chromatographic condition:Lunna NH2Chromatographic column (4.6mm × 150mm, 5 μm);Mobile phase acetonitrile-water gradient;Flow velocity 1.0mL·min-1;Detection wavelength 203nm;Column temperature:30℃;The μ L of sample size 20.Condition of gradient elution is:Mobile phase:Acetonitrile (A): Water (B), gradient elution (0-20min, A:25→40;20-33min, A:40→60;33-37min, A:46;37-45min, A:46 →50;45-62min, A:50→70;62-65min, A:70→90).
As a result:The content for determining ginsenoside composition in ginsenoside extract A groups, B groups is as shown in table 3, it is seen then that dimension life Plain C addition and the use of microwave auxiliary extraction method are during the extract of ginsenoside effectively by panoxadiol group Saponin(e is converted into rare ginsenoside Rg3.
Ginsenoside component content (weight/mass percentage composition) in the extract of table 3
Embodiment 3
Weigh 3 grams of samples of Ginseng, be placed in the extractor of Microwave Extraction Apparatus, add (V/V) ethanol solutions of 45ml 70% with And 0.9 gram of vitamin C, it is 350W by extraction power setting, extraction time is 30 minutes, after the completion of extraction, collects filtered fluid, filter (V/V) ethanol solutions of 45ml 70% and 0.6 gram of vitamin C are added in slag again, same extraction conditions is received after the completion of extracting Collect filtrate.It filtrate will merge twice, rotary evaporation to volume is about 20ml, and adjust pH value to 7.0 with concentrated ammonia liquor, inhaled using macropore Attached resin concentration purifies general ginsenoside, elutes impurity elimination first with 4BV deionized waters, is then enriched with ginseng with the ethanol of 9BV 60% Total saposins, carry out the purifying of saponin(e, elution speed is 1.5ml/min.Ethanol eluate is collected, rotary evaporation removes ethanol in proper amount Afterwards, concentrate is placed in stainless steel disc, in being evaporated in water-bath, 60 DEG C are dried under reduced pressure, and obtain ginsenoside extract.With reference to implementation Ginsenoside Rb in ginsenoside extract obtained by the high effective liquid chromatography for measuring of example 21, ginsenoside Rb2, ginsenoside Rb3, ginsenoside RC, ginsenoside Rg3Mass percent, as a result as shown in table 4.
Ginsenoside component content (weight/mass percentage composition) in the extract of table 4
Embodiment 4
Weigh 5 grams of samples of Ginseng, be placed in the extractor of Microwave Extraction Apparatus, add (V/V) ethanol solutions of 80ml 60% with And 1.0 grams of vitamin Cs, it is 600W by extraction power setting, extraction time is 30 minutes, after the completion of extraction, collects filtered fluid, filter Add (V/V) ethanol solutions of 60ml 60% and 0.6 gram of vitamin C in slag again, extraction power is 600W, extraction time is 20 minutes, filtrate is collected after the completion of extraction.Filtrate it will merge twice, rotary evaporation to volume is about 30ml, is adjusted with concentrated ammonia liquor PH value using enriching and purifying macroporous resin general ginsenoside, elutes impurity elimination to 7.0 with 6BV deionized waters first, then with The ethanol of 8BV 60% is enriched with general ginsenoside, carries out the purifying of saponin(e, elution speed is 1.5ml/min.Collect ethanol eluate, Rotary evaporation is removed after ethanol in proper amount, concentrate is placed in stainless steel disc, in being evaporated in water-bath, 60 DEG C are dried under reduced pressure, and obtain people Join saponin extract.Ginsenoside Rb in the ginsenoside extract with reference to obtained by the high effective liquid chromatography for measuring of embodiment 21、 Ginsenoside Rb2, ginsenoside Rb3, ginsenoside RC, ginsenoside Rg3Mass percent, as a result as shown in table 5.
Ginsenoside component content (weight/mass percentage composition) in the extract of table 5

Claims (1)

1. one kind uses vitamin C as catalyst preparation and is rich in ginsenoside Rg3General ginsenoside extract method, its It is characterised by comprising the steps of:
(1)Ginseng is extracted using microwave loss mechanisms using 60%-70% ethanol as Extraction solvent, the consumption of ethanol is ginseng 8-20 times of weight, wherein ethanol consumption are in terms of milliliter, and ginseng weight is in gram;It is 1.2g/ to extract and concentration is added in solution 100ml vitamin C, the crude extract of general ginsenoside, the work(of Microwave Extraction are obtained by 15-30min extracting through microwave heating Rate is 300W, and the time of Microwave Extraction is 15-30min;
(2)Using macroreticular resin absorbing method, further enriching and purifying obtains general ginsenoside extraction to the crude extract of general ginsenoside Thing;Elute the macroreticular resin of absorption saponin(e respectively with deionized water, ethanol, collect ethanol eluate, be concentrated under reduced pressure, it is anti-dry Product, i.e. general ginsenoside are answered, the volume of deionized water used is 3-6BV, and the volume of ethanol is 5-7BV, and concentration is 50%- 70%;
Extract obtained middle ginsenoside Rb1、Rb2、Rb3、RC、Rg3Mass percent be respectively:1.0%-3.0%、0.2%- 1.0%、0.5-2.5%、0.5%-2.5%、28%-40%。
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