CN101709024B - Method for extracting and purifying resveratrol from polygonum cuspidatum - Google Patents

Method for extracting and purifying resveratrol from polygonum cuspidatum Download PDF

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CN101709024B
CN101709024B CN200910212921.3A CN200910212921A CN101709024B CN 101709024 B CN101709024 B CN 101709024B CN 200910212921 A CN200910212921 A CN 200910212921A CN 101709024 B CN101709024 B CN 101709024B
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giant knotweed
extracting
solution
resveratrol
purifying
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CN101709024A (en
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张强华
石莹莹
熊清平
李东
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Huaiyin Institute of Technology
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Huaiyin Institute of Technology
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Abstract

The invention discloses a method for extracting and purifying resveratrol from polygonum cuspidatum, ethanol, iron salt and alkali are used as extraction media in the method, a multi-stage dynamic countercurrent extraction technology is adopted, and the steps of desalination, purification, acidification, enzymatic hydrolysis, concentration, impurity removal and the like are sequentially carried out extraction liquid, thereby preparing a resveratrol product. The method has the advantages of simple process, short operation time, low production cost, high extraction efficiency, no organic solvent and easy industrial production.

Description

A kind of method of from giant knotweed, extracting purified resveratrol
Technical field
The present invention relates to the method for purification of chemical field, be specifically related to a kind of method of from giant knotweed, extracting purified resveratrol.
Background technology
Trans-resveratrol (Resveratrol is called for short Res) is the natural diphenylethylene polyphenol substance that produces in the plant materials, is a kind of non-flavonoid polyphenolic substance that contains the stilbene class formation.Trans-resveratrol is one type of phytoalexin that special medical health care function is arranged, HUMAN HEALTH is had remarkable effect; Because of its anticancer, reduce fat, prevent and treat cardiovascular disorder, anti-oxidant, delaying senility etc. plays a role clearly; And become another new green cancer therapy drug after taxol, being considered to the contemporary mankind has one of anti-cancer and cancer-preventing new drug of exploitation future most.This material has been widely used in industries such as food, Medicines and Health Product, the huge market demand at present.Particularly this material is after being proved it in 2006 hiv virus is had the obvious suppression effect; The market requirement further promotes; Worldwide started the exploitation and the research boom of trans-resveratrol once more, therefore, it is researched and developed had vast market prospect.
At present, see that the method for from giant knotweed, extracting trans-resveratrol that is stated from bibliographical information mainly contains Enzymatic Extraction, organic solvent extraction, alkaline aqueous solution extraction, microwave extraction and supercritical CO 2Extract etc.At publication number is that CN1566349A, name are called that disclosed technical scheme is in " a kind of method that from giant knotweed, prepare trans-resveratrol ": the giant knotweed extracting solution is added the enzymic hydrolysis extraction; Use the organic solvent extraction extracting solution; Reclaim organic solvent, further separate and make with extra care the trans-resveratrol product.At publication number is that CN1621401A, name are called that disclosed technical scheme is in " a kind of method of from giant knotweed, extracting high-purity resveratrol ": the giant knotweed dry rhizome meal of pre-treatment is added the certain amount of organic solvent refluxing extraction; Adopt the opposed polarity solvent refluxing to extract after reclaiming solvent; The recovery part solvent; Centrifugal, obtain the trans-resveratrol product after throw out water and the sorbent treatment.All need use more a large amount of toxic organic solvent in the employed technology of above-mentioned two schemes, be prone to cause organic solvent residual and environmental pollution in product, and there is more serious potential safety hazard in suitability for industrialized production.At publication number is that CN101348805A, name are called that disclosed technical scheme is in " a kind of technology of from plant, extracting trans-resveratrol ": extract with alkaline aqueous solution; Adjustment pH value is afterwards with the finings removal of impurities of flocculating; Filter; Filtrating adds enzymic hydrolysis, and filtration drying gets 50% trans-resveratrol bullion, and bullion gets 98% trans-resveratrol product after pH value gradient alkaline solution is handled.This scheme has overcome the shortcoming of using toxic organic solvent in the production engineering, but it exists the water yield big, and subsequent processing device pressure is big, the high deficiency of energy consumption; In addition, the control of the temperature of this technology is too high, and scope is too wide, is prone to cause the product oxygenolysis; Extract alkali and use sodium hydroxide, the viscosity that extracts solution is bigger, is prone to cause filter not smooth; Precipitate in the direct filtration aqueous solution the method for product, can make in a large amount of trans-resveratrol residuary water, cause productive rate to descend; Technology is not considered inorganic metal ion such as Ca 2+Removal, cause the product ash oontent to exceed standard.At publication number is in the report of CN1513822A, CN1513823A, has reported employing microwave and supercritical CO respectively 2Extract the method for trans-resveratrol, these method equipment costs are high, are difficult for suitability for industrialized production.
Summary of the invention
The objective of the invention is to: a kind of method of from giant knotweed, extracting purified resveratrol is provided, and this method is simple to operate, and production cost is low, and environmental pollution is little, and product purity and yield are high, are easy to suitability for industrialized production.
Technical solution of the present invention is that the step of this method is following:
(1) pulverizes: the giant knotweed rhizome is pulverized, crossed 14 mesh sieves and get the giant knotweed powder;
(2) extract: adding molysite and alkali get compound in the giant knotweed powder; Compound is placed four jars of pot group type dynamic counterflow extraction apparatus; The aqueous ethanolic solution that adds the concentration 60~70% of 4~6 times of giant knotweed grain weight amounts in jar; Gradation is stirred and is extracted under 45 ± 5 ℃ condition, and the plate-and-frame filter press of 300~500 order filter cloth specifications is crossed and filtered extracting solution;
(3) desalination: extracting solution is got desalting extracted liquid with the resin cation(R.C.) desalination;
(4) purifying: with the ethanol in the desalting extracted liquid reclaim the purifying extracting solution;
(5) acidifying: transfer pH to 4.5~5.5 to get acidizing extracting liquid the purifying extracting solution;
(6) enzymolysis: cellulase is added in the acidizing extracting liquid body, and enzyme dosage is 60~100Ug of giant knotweed grain weight amount -1, 50 ± 5 ℃ of enzymolysis 6~8h of temperature get enzymolysis solution;
(7) concentrate: enzymolysis solution is concentrated, filters with imitative B strainer, separate throw out;
(8) removal of impurities: taking precipitate, the absolute ethyl alcohol of 10~20 times (W/V) of adding weight of precipitate, stirring and dissolving 20~30min filters, and filtrate recycling ethanol gets the trans-resveratrol product.
Wherein, the molysite in the said step (2) is food grade ferrous sulfate, ferric sulfate or bodied ferric sulfate, and its addition is 15~20% of a giant knotweed grain weight amount; Alkali is food grade calcium hydroxide or quicklime, and its addition is 8~10% of a giant knotweed grain weight amount; The time that the pot group type dynamic countercurrent extracts is a not good liquor 60~65min, two not good liquors, 50~55min, three not good liquors, 40~45min, four not good liquors, 30~35min.
Wherein, the resin cation(R.C.) model in the said step (3) is 001 * 14.5 or 001 * 16, and operational condition is flow velocity 3~5BVh -1, blade diameter length ratio 1: 4~7.
Wherein, 45 ± 5 ℃ of the ethanol recovered temperatures in the said step (4), vacuum tightness-0.075~0.085MPa.
Wherein, the acidifying in the said step (5) is adopted Hydrogen chloride or is directly filled CO 2The gas adjust pH.
Wherein, the concentrated amount in the said step (7) is 1/2~1 times (W/V) of relative giant knotweed grain weight amount.
The present invention has following advantage:
1, extracts purge process not with an organic solvent, avoided the pollution of organic solvent environment and product.
2, adopt pot group type dynamic countercurrent technology, guaranteeing to have reduced solvent load greatly under the sufficient condition of extraction, saved energy consumption, reduced production cost, industrial prospect is good.
3, adopt ethanol liquid to add molysite and alkali, guaranteeing to have avoided the proposition of protein, phlegmatic temperament and tannin under the condition that target product fully extracts, realize extracting, the fusion of flocculation two steps, reduced extraction step, shortened the PT for extracting medium.
Embodiment
Through concrete embodiment technical solution of the present invention is detailed below, but technical solution of the present invention is not limited to following embodiment.
Embodiment 1:
The giant knotweed rhizome is crushed to 14 mesh sieves got the giant knotweed powder; Take by weighing 4 parts in 100kg giant knotweed powder, place the pot group type dynamic counterflow extraction apparatus respectively, each adds 15kg ferrous sulfate and 8kg quicklime; Each adds the aqueous ethanolic solution of 400kg concentration 60%, and 40 ℃ of gradation are stirred and extracted a not good liquor 60min; Two not good liquor 50min; Three not good liquor 40min, four not good liquor 30min, the plate-and-frame filter press of 300 order filter cloth specifications is crossed and is filtered extracting solution; Extracting solution is 3BVh with 001 * 14.5 resin cation(R.C.) in flow velocity -1, blade diameter length ratio is that desalination gets desalting extracted liquid under 1: 4 the condition; Desalting extracted liquid is reclaimed ethanol in 40 ℃, vacuum tightness-0.075MPa get the purifying extracting solution; Transfer pH to 4.5 to get acidizing extracting liquid with Hydrogen chloride the purifying extracting solution; With cellulase 2.4 * 10 7U adds in the acidizing extracting liquid body, and 45 ℃ of temperature, enzymolysis 6h get enzymolysis solution; Enzymolysis solution is concentrated into 1/2 times (W/V) with respect to giant knotweed powder amount, filters with imitative B strainer, separate throw out; The absolute ethyl alcohol that adds its amount 10 times (W/V) in the throw out, stirring and dissolving 20min filters, and filtrate recycling ethanol gets trans-resveratrol product 4.47kg, and purity is 91.2%.
Embodiment 2:
The giant knotweed rhizome is crushed to 14 mesh sieves got the giant knotweed powder; Take by weighing 4 parts in 100kg giant knotweed powder, place the pot group type dynamic counterflow extraction apparatus respectively, each adds 17.5kg ferric sulfate and 9kg calcium hydroxide; Each adds the aqueous ethanolic solution of 500kg concentration 65%, and 45 ℃ of gradation are stirred and extracted a not good liquor 62min; Two not good liquor 52min; Three not good liquor 42min, four not good liquor 32min, the plate-and-frame filter press of 400 order filter cloth specifications is crossed and is filtered extracting solution; Extracting solution with 001 * 16 resin cation(R.C.) in flow velocity 4BVh -1, blade diameter length ratio is that desalination gets desalting extracted liquid under 1: 5.5 condition; Desalting extracted liquid is got the purifying extracting solution in 45 ℃, the condition recover ethanol of vacuum tightness-0.08MPa; In the purifying extracting solution, charge into CO 2Gas transfers pH to 5.0 to get acidizing extracting liquid; With cellulase 3.2 * 10 7U adds in the acidizing extracting liquid body, and 50 ℃ of temperature, enzymolysis 7h get enzymolysis solution; Enzymolysis solution is concentrated into 3/4 times (W/V) with respect to giant knotweed grain weight amount, filters with imitative B strainer, separate throw out; The absolute ethyl alcohol that adds its amount 15 times (W/V) in the throw out, stirring and dissolving 25min filters, and filtrate recycling ethanol gets trans-resveratrol product 5.23kg, and purity is 93.1%.
Embodiment 3:
The giant knotweed rhizome is crushed to 14 mesh sieves got the giant knotweed powder; Take by weighing 4 parts in 100kg giant knotweed powder, place the pot group type dynamic counterflow extraction apparatus respectively, each adds 20kg bodied ferric sulfate and 10kg calcium hydroxide; Each adds the aqueous ethanolic solution of 600kg concentration 70%, and 50 ℃ of gradation are stirred and extracted a not good liquor 65min; Two not good liquor 55min; Three not good liquor 45min, four not good liquor 35min, the plate-and-frame filter press of 500 order filter cloth specifications is crossed and is filtered extracting solution; Extracting solution with 001 * 16 resin cation(R.C.) in flow velocity 5BVh -1, blade diameter length ratio is that desalination gets desalting extracted liquid under 1: 7 the condition; Desalting extracted liquid is got the purifying extracting solution in 50 ℃, the condition recover ethanol of vacuum tightness-0.085MPa; Transfer pH to 5.5 to get acidizing extracting liquid in purifying extracting solution Hydrogen chloride; With cellulase 4.0 * 10 7U adds in the acidizing extracting liquid body, and 55 ℃ of temperature, enzymolysis 8h get enzymolysis solution; Enzymolysis solution is concentrated into 1 times (W/V) with respect to giant knotweed grain weight amount, filters with imitative B strainer, separate throw out; The absolute ethyl alcohol that adds its amount 20 times (W/V) in the throw out, stirring and dissolving 30min filters, and filtrate recycling ethanol gets trans-resveratrol product 3.64kg, and purity is 89.4%.

Claims (6)

1. method of from giant knotweed, extracting purified resveratrol is characterized in that the step of this method is following:
(1) pulverizes: the giant knotweed rhizome is pulverized, crossed 14 mesh sieves and get the giant knotweed powder;
(2) extract: adding molysite and alkali get compound in the giant knotweed powder; Compound is placed four jars of pot group type dynamic counterflow extraction apparatus; The aqueous ethanolic solution that adds the concentration 60~70% of 4~6 times of giant knotweed grain weight amounts in jar; Gradation is stirred and is extracted under 45 ± 5 ℃ condition, and the plate-and-frame filter press of 300~500 order filter cloth specifications is crossed and filtered extracting solution;
(3) desalination: extracting solution is got desalting extracted liquid with the resin cation(R.C.) desalination;
(4) purifying: with the ethanol in the desalting extracted liquid reclaim the purifying extracting solution;
(5) acidifying: transfer pH to 4.5~5.5 to get acidizing extracting liquid the purifying extracting solution;
(6) enzymolysis: cellulase is added in the acidizing extracting liquid body, and enzyme dosage is 60~100Ug of giant knotweed grain weight amount -1, 50 ± 5 ℃ of enzymolysis 6~8h of temperature get enzymolysis solution;
(7) concentrate: enzymolysis solution is concentrated, filters with imitative B strainer, separate throw out;
(8) removal of impurities: taking precipitate, the absolute ethyl alcohol of 10~20 times of W/V of adding weight of precipitate, stirring and dissolving 20~30min filters, and filtrate recycling ethanol gets the trans-resveratrol product.
2. a kind of method of from giant knotweed, extracting purified resveratrol according to claim 1, it is characterized in that: the molysite in the said step (2) is food grade ferrous sulfate, ferric sulfate or bodied ferric sulfate, its addition is 15~20% of a giant knotweed grain weight amount; Alkali is food grade calcium hydroxide or quicklime, and its addition is 8~10% of a giant knotweed grain weight amount; The time that the pot group type dynamic countercurrent extracts is a not good liquor 60~65min, two not good liquors, 50~55min, three not good liquors, 40~45min, four not good liquors, 30~35min.
3. a kind of method of from giant knotweed, extracting purified resveratrol according to claim 1, it is characterized in that: the resin cation(R.C.) model in the said step (3) is 001 * 14.5 or 001 * 16, operational condition is flow velocity 3~5BVh -1, blade diameter length ratio 1: 4~7.
4. a kind of method of from giant knotweed, extracting purified resveratrol according to claim 1 is characterized in that: 45 ± 5 ℃ of the ethanol recovered temperatures in the said step (4), and vacuum tightness-0.075~-0.085MPa.
5. a kind of method of from giant knotweed, extracting purified resveratrol according to claim 1, it is characterized in that: the acidifying in the said step (5) is adopted Hydrogen chloride or is directly filled CO 2The gas adjust pH.
6. a kind of method of from giant knotweed, extracting purified resveratrol according to claim 1, it is characterized in that: the concentrated amount in the said step (7) is 1/2~1 times of W/V of relative giant knotweed grain weight amount.
CN200910212921.3A 2009-11-06 2009-11-06 Method for extracting and purifying resveratrol from polygonum cuspidatum Expired - Fee Related CN101709024B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1251361A (en) * 1999-09-24 2000-04-26 四川省凉山州生物研究所 Process for extracting resveratrol from Chinese medicine giant knotweed root
CN101348805A (en) * 2007-07-20 2009-01-21 上海诺德生物实业有限公司 Process for extracting resveratrol from plant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1251361A (en) * 1999-09-24 2000-04-26 四川省凉山州生物研究所 Process for extracting resveratrol from Chinese medicine giant knotweed root
CN101348805A (en) * 2007-07-20 2009-01-21 上海诺德生物实业有限公司 Process for extracting resveratrol from plant

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