CN100395262C - Betulinol producing process - Google Patents
Betulinol producing process Download PDFInfo
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- CN100395262C CN100395262C CNB2006100097252A CN200610009725A CN100395262C CN 100395262 C CN100395262 C CN 100395262C CN B2006100097252 A CNB2006100097252 A CN B2006100097252A CN 200610009725 A CN200610009725 A CN 200610009725A CN 100395262 C CN100395262 C CN 100395262C
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- betulin
- extraction
- carbon dioxide
- production method
- extraction kettle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The present invention relates to a production method of betulinol. Birch bark is used as raw material; the present invention has the process line of pulverization, ultrasonic wall breaking, supercritical carbon dioxide extraction to obtain the coarse product of the betulinol, ethanol recrystallization to obtain a product. The present invention has the advantages of low production cost, no environment pollution during the production process, high yield of products and high purity.
Description
Technical field
The present invention relates to utilize supercritical liquid extraction technique from plant, to extract the natural constituent field, relate in particular to a kind of processing method of utilizing supercritical carbon dioxide extraction method to produce betulin.
Background technology
Betulin (Betulin) (different name birch camphor, trochol) is a needle crystal, molecular formula: C
30H
50O
2, molecular weight 442.70, molecular structural formula:
Betulin is a kind of important pentacyclic triterpenoid that contains in birch (Betula) bark, tool edge anti-tumor activity.Its derivative betulinic acid is remarkable anti-HIV-1 of a kind of nontoxic substantially tool and the active compound of melanoma, has a extensive future.
At present, betulin generally adopts the organic solvent extraction method to produce.Patent Office of State Intellectual Property Office discloses a kind of trochol and Betulinic acid extracting and purifying method on July 6th, 2005, the betulin extracting and purifying method of this patent of invention adopts following steps: the Japanese birch bark after (1) will pulverize adds organic reagent and stirs extraction for several times, united extraction liquid removes residue.(2) concentrating under reduced pressure extracting solution is placed after-filtration, and with extracting the solvent washing precipitation, collecting precipitation removes filtrate.(3) precipitation is dissolved in the methyl alcohol, adds the gac refluxing extraction, filter.(4) collect filtrate, reclaim under reduced pressure methyl alcohol is collected filter residue, adds the methylene dichloride dissolving, adds pyridine and acetic anhydride again, stirs some hrs.(5) add diluted acid, bicarbonate aqueous solution, the Powdered insolubles in upper strata is collected in the pure water washing.(6) powder is dissolved in ethanol or methyl alcohol or the Virahol places, separate out the crystal after-filtration, washing, dry gained betulin crystal.
The extracting and purifying method of above-mentioned betulin is with through organic solvent extraction repeatedly, complicated operation, and the cost height, yield is low.And having the organic solvent residual problem in the residue after extracting, environmental pollution is serious, and in the production process producers is poisoned greatly.
Supercritical liquid extraction technique is a kind of novel high-tech isolation technique that progressively grows up in later stage nineteen sixties.It is to utilize near stagnation point, and the subtle change of system temperature and pressure can cause the characteristic of the sudden change of solubleness generation several magnitude to realize separating of material.It has the separation efficiency height, and the operational cycle is short, and mass transfer velocity is fast, and solvency power is strong, the selectivity advantages of higher, and wherein supercritical co is a kind of safe, nontoxic and the most sophisticated supercutical fluid of technical development.
Summary of the invention
The object of the present invention is to provide a kind of production cost low, non-environmental-pollution in the leaching process, organic solvent-free are residual, the betulin production technique that product purity is high.
In order to achieve the above object, the present invention is that---ethyl alcohol recrystallization obtains the operational path of product to supersonic wave wall breaking---supercritical carbon dioxide extraction gets the betulin crude product---to raw material through pulverizing with the Cortex Betulae Luminiferae.
Advantage of the present invention is:
1. the present invention utilizes supercritical carbon dioxide extraction triterpenes biologically active substance betulin under the condition of not adding any entrainment agent, in the extraction process not with an organic solvent, non-environmental-pollution.
2. be the raw material production betulin with the Cortex Betulae Luminiferae, raw material is that birch is felled and industrial wood waste, and the source is abundant, and is cheap and easy to get, can effectively improve the utilising efficiency of biomass resource.
3. the present invention is the raw material production betulin with the Cortex Betulae Luminiferae, and product yield is 10～25%.
4. utilize among the present invention that betulin content can surpass 90% in the betulin crude product that supercritical carbon dioxide extraction method produces.Betulin content can surpass 98% in the product that obtains behind the ethyl alcohol recrystallization.
Embodiment
Describe in further detail below in conjunction with embodiments of the invention:
A kind of production method of betulin is that---ethyl alcohol recrystallization obtains the operational path of product to supersonic wave wall breaking---supercritical carbon dioxide extraction gets the betulin crude product---to raw material through pulverizing with the Cortex Betulae Luminiferae.
The production method of described betulin, the supersonic wave wall breaking time is 30～60 minutes, 40～80 kilo hertzs of ultrasonic wave operating frequencies.
The production method of described betulin, the extraction kettle raw material loadings of supercritical carbon dioxide extraction is 10～50% of an extraction kettle volume, the extraction kettle temperature is 32～60 ℃, extraction kettle pressure is 7.5～35 MPas, separating still pressure is 5～7 MPas, carbon dioxide flow is 10～40 liters/hour, and the extraction time is 0.5～5 hour.
The production method of described betulin, ethyl alcohol recrystallization number of times are 2～3 times.
Embodiment 1
Cortex Betulae Luminiferae after 80 ℃ of oven dry, is pulverized 60 orders.100 gram Cortex Betulae Luminiferae powder supersonic wave wall breakings under 45 kilo hertzs ultrasonic wave operating frequency are packed into after 50 minutes in 1 liter the extraction kettle, the Cortex Betulae Luminiferae powder volume accounts for 45% of extraction kettle, under the condition of 33 ℃ of extraction kettle temperature, extraction kettle pressure 8 MPas, separating still pressure 6 MPas, carbon dioxide flow is 20 liters/hour, extract and got the betulin crude product in 3 hours, crude product obtains betulin product 21.2 grams for 2 times through ethyl alcohol recrystallization, and purity is 98.1%.
Embodiment 2
Cortex Betulae Luminiferae after 80 ℃ of oven dry, is pulverized 60 orders.75 gram Cortex Betulae Luminiferae powder supersonic wave wall breakings under 70 kilo hertzs ultrasonic wave operating frequency are packed into after 30 minutes in 1 liter the extraction kettle, the Cortex Betulae Luminiferae powder volume accounts for 40% of extraction kettle, under the condition of 35 ℃ of extraction kettle temperature, extraction kettle pressure 20 MPas, separating still pressure 7 MPas, carbon dioxide flow is 10 liters/hour, extract and got the betulin crude product in 4 hours, crude product obtains betulin product 11.3 grams for 3 times through ethyl alcohol recrystallization, and purity is 98.1%.
Embodiment 3
Cortex Betulae Luminiferae after 80 ℃ of oven dry, is pulverized 60 orders.20 gram Cortex Betulae Luminiferae powder supersonic wave wall breakings under 40 kilo hertzs ultrasonic wave operating frequency are packed into after 40 minutes in 1 liter the extraction kettle, the Cortex Betulae Luminiferae powder volume accounts for 15% of extraction kettle, under the condition of 45 ℃ of extraction kettle temperature, extraction kettle pressure 30 MPas, separating still pressure 5 MPas, carbon dioxide flow is 40 liters/hour, extract and got the betulin crude product in 1 hour, crude product obtains betulin product 2.78 grams for 2 times through ethyl alcohol recrystallization, and purity is 98.0%.
Claims (4)
1. the production method of a betulin is characterized in that: be that---ethyl alcohol recrystallization obtains the operational path of product to supersonic wave wall breaking---supercritical carbon dioxide extraction gets the betulin crude product---to raw material through pulverizing with the Cortex Betulae Luminiferae.
2. according to the production method of the described betulin of claim 1, it is characterized in that: the supersonic wave wall breaking time is 30～60 minutes, 40～80 kilo hertzs of ultrasonic wave operating frequencies.
3. according to the production method of the described betulin of claim 1, it is characterized in that: the extraction kettle raw material loadings of supercritical carbon dioxide extraction is 10～50% of an extraction kettle volume, the extraction kettle temperature is 32～60 ℃, extraction kettle pressure is 7.5～35 MPas, separating still pressure is 5～7 MPas, carbon dioxide flow is 10～40 liters/hour, and the extraction time is 0.5～5 hour.
4. according to the production method of the described betulin of claim 1, it is characterized in that: the ethyl alcohol recrystallization number of times is 2～3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100097252A CN100395262C (en) | 2006-02-21 | 2006-02-21 | Betulinol producing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100097252A CN100395262C (en) | 2006-02-21 | 2006-02-21 | Betulinol producing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1810826A CN1810826A (en) | 2006-08-02 |
| CN100395262C true CN100395262C (en) | 2008-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100097252A Expired - Fee Related CN100395262C (en) | 2006-02-21 | 2006-02-21 | Betulinol producing process |
Country Status (1)
| Country | Link |
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| CN (1) | CN100395262C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093458B (en) * | 2010-12-20 | 2012-10-17 | 大兴安岭林格贝有机食品有限责任公司 | Method for enriching and purifying betulin in birch barks |
| CN109134584B (en) * | 2018-08-14 | 2020-09-08 | 四川兴杰象药业有限公司 | Separation and purification preparation method for extracting corosolic acid from loquat leaves |
| CN110092811A (en) * | 2019-06-04 | 2019-08-06 | 哈尔滨市泽尼康药业有限公司 | A kind of preparation method of betulin |
| CN114009780A (en) * | 2021-11-17 | 2022-02-08 | 生命因子生物科技(广东)有限公司 | Food for repairing nerve cells and preparation method thereof |
-
2006
- 2006-02-21 CN CNB2006100097252A patent/CN100395262C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| Extraction of betulin from bark of Betula platyphylla bysupercriticaltion carbon dioxide extraction. Zhang Yu-hong ,Yu Tao,Wang Yang.Journal of Forestry Research,Vol.14 No.3. 2003 |
| Extraction of betulin from bark of Betula platyphylla bysupercriticaltion carbon dioxide extraction. Zhang Yu-hong ,Yu Tao,Wang Yang.Journal of Forestry Research,Vol.14 No.3. 2003 * |
| 前处理条件对超临界CO2萃取隐甲藻油脂的影响. 王永华等.食品与发酵工艺，第28卷第4期. 2002 |
| 前处理条件对超临界CO2萃取隐甲藻油脂的影响. 王永华等.食品与发酵工艺，第28卷第4期. 2002 * |
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| Publication number | Publication date |
|---|---|
| CN1810826A (en) | 2006-08-02 |
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Granted publication date: 20080618 |