CN1263769C - Method for separating and extracting cholesterol from lanolin - Google Patents

Method for separating and extracting cholesterol from lanolin Download PDF

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Publication number
CN1263769C
CN1263769C CN 200410025654 CN200410025654A CN1263769C CN 1263769 C CN1263769 C CN 1263769C CN 200410025654 CN200410025654 CN 200410025654 CN 200410025654 A CN200410025654 A CN 200410025654A CN 1263769 C CN1263769 C CN 1263769C
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lanolin
lanosterol
solution
extraction
cholesterol
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CN1594350A (en
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朱京科
邵君芳
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ZHEJIANG GARDEN BIOCHEMICAL HIGH-TECH CO LTD
Zhejiang University ZJU
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ZHEJIANG GARDEN BIOCHEMICAL HIGH-TECH CO LTD
Zhejiang University ZJU
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Abstract

The present invention relates to a method for separating and extracting cholesterol from lanolin crude products. The method comprises the following procedures: washing lanolin crude products in a water solution of surface active agents; making sponification reaction to washed lanolin or refined lanolin in an alcoholic solution; extracting lanosterol in saponified substances by using ethyl acetate, propanone, toluene, alkane or halohydrocarbon as extracting agents to obtain a lanosterol hydrocarbon solution or a halohydrocarbon solution; at room temperature, washing the lanosterol hydrocarbon solution or the halohydrocarbon solution by an alcoholic solution, and removing an alcoholic solution layer after washing; removing hydrocarbon or halohydrocarbon in the lanosterol solution by evaporation to obtain lanosterol paste containing cholesterol; selectively crystallizing the lanosterol paste in alcohol solvents to obtain crude cholesterol; obtaining cholesterol crystals after recrystallization. Devices used in the method are simple, and all solvents used can be recycled; therefore, the method not only reduces the consumption of chemicals, but also reduces the load of three waste disposal. The extraction ratio of cholestane is high, and the purity reaches more than 90%; the cholesterol obtained conforms to the requirement of medicine production.

Description

The cholesteric method of separation and Extraction in the lanolin
Technical field
The present invention relates to the cholesteric method of separation and Extraction in the lanolin.
Background technology
Cholesterol is a main raw material of producing Vitamin D3 500,000 I.U/GM and artificial Calculus Bovis, also is a kind of liquid crystal material of excellent property simultaneously.
Cholesterol has molecular structure as follows:
Contain a plurality of chiral carbon atoms in the cholesterol molecular structure, be difficult for obtaining by chemical synthesis process.Cholesterol is present in the natural products such as animal viscera, brain, bone and animal-plant oil, but general content is lower, so from natural product, the technology of especially extracting steroid from the natural product course of processing in the waste material that produces seems and is even more important efficiently in grasp.
80~nineties of last century, Czech patents CZ 237,195 (1983), Poland Patent PL 164,762 (1994) disclose the character that metal ions such as utilizing phytosterin compound and calcium, zinc forms title complex, sterols separated from lanolin, its main process is: lanolin saponification in the alcohol solution of alkali (as sodium hydroxide etc.), organic solvent extraction lanosterol.In the solvent, lanosterol is handled the sterol that makes wherein and is obtained to separate with the form of title complex with calcium chloride or zinc chloride.After decomposing title complex, recrystallization obtains sterol.
The mid-90, Czech patents CZ 279,996 (1995) introduces molecular distillation technique and extract cholesterol from lanolin.Its main process is: lanolin after the saponification, is used in the mineral acid and saponification liquor in the alkali alcohol solution, 100 ℃ and the following alcohol and water of removing in the saponification liquor that distills of normal pressure.The distillation residuum carries out molecular distillation and obtains 70% overhead product and 30% distillation residue.Overhead product is handled the back with acetone or benzene extraction with calcium oxide, and distillation removes that solvent gets the sterol mixture in the filtered liquid.
The nineties, Japanese Patent JP 07,278, and 181 (1995) propose to separate sterol compound in the lanolin with cyclodextrin.Its main process is: behind the cracking stock grease, add a certain amount of cyclodextrin and make it to form adducts with cholesterol.Under 60~90 ℃, bubbling in the aqueous solution of adducts, the free cholesterol after the adducts of sterol and cyclodextrin decomposes adhere on the foam and obtain to separate.International monopoly WO 96 16, and 712 (1996) unite use absorption and supercritical technology separation and Extraction cholesterol from grease.And China Guangzhou Inst of Chemistry, Chinese Academy of Sciences adopts column chromatography separation and Extraction cholesterol from marine plant South China Sea sponge Stellettas SP at the patented technology CN 1063449C of the application nineties.Its process comprises that industrial alcohol extracts, concentrates sterol among the sponge Stellettas SP, and with the extraction of ethyl acetate equal solvent, again through silica gel column chromatography, recrystallization gets colourless needle-like cholesterol crystal in acetone-methanol solvate at last then.
In sum, separation and Extraction cholesterol method mainly can be three classes in the existing lanolin, adducts method, molecular distillation method and chromatogram or absorption method.
The adducts method realizes in organic solvent.It is used sterol and easily separates sterol in the lanolin with the character of some metal ions formation adductss.Its advantage is not high to equipment requirements, operates simple relatively.But this method is except that using a large amount of organic solvents, also need use morely such as chemical such as calcium chloride, zinc chloride, makes sterol obtain to separate with the form of adducts.But calcium chloride and zinc chloride also are converted into other compound simultaneously and can not directly apply mechanically in decomposing the adducts process.So this method not only process is longer, also consume more chemical adjuvant simultaneously.
The cyclodextrin method can be thought a kind of generalized adducts method, and the special space structure of cyclodextrin molecular makes it to form environment in the hydrophobicity cavity of certain volume, when cavity volume is suitable, can wrap up hydrophobic steroidal compounds and sterols separated optionally.Its advantage is the separation efficiency height, and selectivity is good, can obtain highly purified steroidal compounds.But, generally be suitable for the preparation of a small amount of steroidal compounds because cyclodextrin costs an arm and a leg.Molecular distillation method (molecular distillation) is a kind of isolation technique that RECENT DEVELOPMENTS is got up, and it is the continuous process of distillation that carries out the liquid-liquid separation operation under high vacuum.Under condition of high vacuum degree, when the hot face of molecular still and the distance between the condensing surface are less than or equal to the mean free path of separated material molecule, molecule forms liquid film and evaporation on hot face, intermolecularly do not bump mutually, does not have the ground of obstruction to the condensing surface motion and do not coagulated by rib.At temperature and pressure one regularly, the mean free path of light molecule is greater than weight molecule, if the spacing of condensing surface and generating surface less than the mean free path of light molecule greater than the mean free path of weight molecule, the condensation on condensing surface of light molecule is collected, and weight molecule is got back to generating surface, thereby realizes sepn process.This technology is applied in the lanolin cholesterol when extracting, and can significantly reduce the usage quantity phase of organic solvent.But before distillation procedure, still must use a certain amount of other chemical adjuvant to handle lanolin saponification thing.Simultaneously, this method is higher to equipment requirements, and need be according to the molecular weight difference design generating surface of separated material and the spacing of condensing surface.
Supercritical chromatography also is a kind of isolation technique of RECENT DEVELOPMENTS.It uses the CO of different compounds in supercritical state 2In different solubility and obtain separation.Its advantage is to use almost non-toxic CO 2, be cleaning technology.But must under high pressure operate, to the equipment requirements height, investment is big.
And column chromatography is based on different compounds at the different and separating compound of the distribution of two-phase (stationary phase and moving phase).Generally be suitable for preparation on a small scale.
Summary of the invention
The purpose of this invention is to provide a kind of from the lanolin crude product that waste water from washing wool reclaim to obtain the cholesteric method of separation and Extraction.
The cholesteric method of separation and Extraction in the lanolin crude product of the present invention may further comprise the steps:
1) crude product lanolin is with isopyknic 0.2% polyoxyethylene surfactant solution washing, 60~80 ℃ of wash temperatures, and washing time 2~4 hours, branch vibration layer gets the lanolin that color and luster improves behind the standing demix;
2) under the alkaline condition, with above-mentioned through the washing lanolin or the alcoholic solution of refined wool fat 50~95% in carry out saponification reaction, temperature of reaction is 40~80 ℃, lanolin and alkali weight ratio are 10: 1.5~3.0, lanolin and alcoholic solution volume ratio are 1: 2~2.5, reaction finishes to steam under the normal pressure of back 80~90% solvent, and 100~110 ℃ down or vacuum-drying, after the cooling brown solid is saponified;
3) be that extraction agent extracts above-mentioned lanosterol in saponified with ethyl acetate, acetone, toluene, alkane or halogenated alkane, the total consumption of extraction agent is 8~16 times of saponified weight, 20~60 ℃ of following extraction agents divide 2~3 batches add saponified in, every batch was stirred 30~60 minutes, filter, merging filtrate gets lanosterol solution, when using ethyl acetate, acetone or methylbenzene extraction lanosterol, extraction agent was removed in evaporation after extraction was finished, and added hydrocarbon or halogenated alkane solution that hydrocarbon or halogenated hydrocarbon solvent convert lanosterol in the distillation residuum;
4) under the room temperature, above-mentioned lanosterol hydrocarbon or halogenated alkane solution wash with isopyknic 60~95% alcoholic solutions, and washing back branch removes the alcoholic solution layer, and hydrocarbon or the halohydrocarbon in the lanosterol solution removed in evaporation, and residuum cooling back is for containing cholesteric paste lanosterol;
5) with step 4) gained paste lanosterol selective crystallization cholesterol in alcoholic solvent, paste and alcoholic solvent volume ratio are 1: 1~5, slowly lower the temperature behind the dissolving paste down for 50~60 ℃, crystallization got needle-like crystal in 8~24 hours, filter, get faint yellow cholesterol crude product after the washing, thick cholesterol recrystallization in alcohol gets white needles cholesterol crystal.
Among the present invention, said polyoxyethylene is can be peregal and/or OP-10 nonionic surface active agent.The alkane extraction agent can adopt hexane, heptane, octane, sherwood oil or solvent oil.The halogenated alkane extraction agent can adopt methylene dichloride, trichloromethane or ethylene dichloride.
Above-mentioned steps 2) said alkali is sodium hydroxide or potassium hydroxide.Said selective crystallization of step 5) and recrystallization alcoholic solvent can be methyl alcohol, ethanol or Virahol and the aqueous solution thereof.
Separate purification sterol method in the inventive method and the existing lanolin relatively, have the following advantages:
1) the present invention separates in lanolin and does not adopt adducts method sterols separated in the purification sterol process, but the application choice crystallization directly from lanosterol crystallization go out sterol, make whole technological process except that organic solvent, seldom use other chemical.Not only reduced the consumption of chemical, also alleviated the three wastes and handled load.
2) traditional technology is separated cholesterol by sterol and metal formation adducts, and other sterol also forms similar adducts under the same conditions in the lanolin, obtains to mix steroidal compounds behind the decomposition adducts, and its purity can't satisfy the requirement of drug manufacture.And the cholesterol content that the present invention obtains reaches more than 90%, meets the drug manufacture requirement.
3) traditional technology is passed through the adducts sterols separated, and is because many factors can influence the formation of title complex, so traditional technology is higher to raw material lanolin quality requirements, just applicable after general lanolin need be made with extra care.And the present invention is to raw material lanolin wide adaptability, and the long wool of inferior quality or storage time refers to all can be suitable for, and still can obtain the cholesterol extraction yield of being satisfied with.
4) the sterol method still must be carried out a series of pre-treatment to lanolin in the molecular distillation method extraction lanolin except that equipment requirements is higher, wherein need use a certain amount of inorganic calcium to separate lanolin fatty acid in advance.The present invention is not high to equipment requirements, although use quantity of solvent greater than molecular distillation technology, all solvents are all directly recycled, and do not use other chemical adjuvant substantially.So the waste material that the present invention produces in the whole technological process still less, and is lighter to other composition destructiveness in the lanolin.
Embodiment
Embodiment 1.
Have at device and to add refined wool fat 200 grams, 30 gram solid sodium hydroxide (technical grade) and 500 milliliter of 60% methyl alcohol (technical grade) in the 1000ml there-necked flask of thermometer, condenser and agitator.Start stirring after being warming up to 60 ℃, stir 2.0 hours stopped reaction under this temperature, make reaction unit into water distilling apparatus and steam most of solvent.Residuum descended dry 2 hours at 105 ℃, got light brown solid 220 grams after the cooling.Extract lanosterol (comprising cholesterol) wherein under 1800 milliliters of ethyl acetate room temperatures of this saponified usefulness in three batches, filter and obtain 1700 milliliters of filtrates.After evaporating the ethyl acetate of removing in the filtrate, residuum dissolves with 1400 ml n-hexanes.In hexane solution, add 500 milliliter of 70% methyl alcohol, stir standing demix after 30 minutes under the room temperature.Divide and remove methanol layer, repeat twice of aforesaid operations.Institute's normal hexane is removed in evaporation, gets the light paste of 50 grams after the cooling.With 150 milliliters of industrial methanol heating for dissolving pastes, slowly cool to room temperature, 12 hours after-filtration, crystallization is with methanol wash once.Get the light yellow hour hand shape cholesterol crude product of 15 grams after the drying.This crude product is with 100 milliliters of industrial methanol recrystallizations.Filter white cholesterol 13.5 grams, recrystallization cholesterol purity is greater than 90%, yield 82%.
Embodiment 2.
Device has and adds degras 200 gram and 200 milliliters of 0.2%OP-10 aqueous solution in the 1000ml there-necked flask of thermometer, condenser and agitator.60 ℃ are stirred standing demix after 2 hours down, behind the branch vibration layer, add 50 gram solid potassium hydroxide (technical grade) and 500 milliliter of 80% ethanol (technical grade).Start stirring after being warming up to 60 ℃, stirred 3.0 hours under this temperature, press embodiment 1 method later on and handle saponified that 210 grams are brown saponified.Under 40 ℃, with 1800 milliliters of boiling ranges be 60 ~ 90 ℃ of sherwood oils divide extract for three times saponified in lanosterol, filter 1700 milliliters of filtrates.Divide wash filtrate 3 times with 1600 milliliter of 80% ethanol under the room temperature.After branch removed ethanol, evaporation was removed sherwood oil and is got dark paste 45 grams.Press the crystallization operation of embodiment 1 last white cholesterol crystal 8.2 grams, recrystallization cholesterol purity is greater than 90%, yield 80%.
Embodiment 3.
The pre-treatment of lanolin crude product is with embodiment 2, and wherein the 0.2%OP-10 aqueous solution is used the 0.2% peregal aqueous solution instead, and saponification reaction and aftertreatment are with embodiment 1.Under 50 ℃, 900 milliliters of ethylene dichloride divide three extractions saponified middle lanosterol.Under the room temperature, extracting solution divides the washing extracting solution three times with 900 milliliter of 80% methyl alcohol.After branch removed methanol layer, evaporation was removed ethylene dichloride and is got dark paste 46 grams.Use industrial alcohol to obtain white cholesterol 8 grams, cholesterol purity 90%, yield 81% at last by embodiment 1 crystallization operation.
Embodiment 4
Pre-treatment of lanolin crude product and saponification and aftertreatment thereof are with embodiment 2.The 1400 milliliters of acetone of saponified usefulness that obtain divide the extraction lanosterol three times.Acetone in the extracting solution is removed in evaporation, adds 1500 milliliters of 120# solvent oils, behind the stirring and dissolving lanosterol, obtains the paste lanosterol by embodiment 2 washings and processing.Carry out selective crystallization and recrystallization by embodiment 1 and get cholesterol crystal 7.6 grams, cholesterol purity is greater than 90%, yield 75%.
Embodiment 5
Replace acetone among the embodiment 4 with toluene, other operate with embodiment 4, obtains cholesterol crystal 7.1 and restrains, and cholesterol purity is greater than 90%, yield 70%.

Claims (6)

1. the cholesteric method of separation and Extraction in the lanolin crude product is characterized in that may further comprise the steps:
1) crude product lanolin is with isopyknic 0.2% polyoxyethylene surfactant solution washing, 60~80 ℃ of wash temperatures, and washing time 2~4 hours, branch vibration layer gets the lanolin that color and luster improves behind the standing demix;
2) under the alkaline condition, with above-mentioned through the washing lanolin or the alcoholic solution of refined wool fat 50~95% in carry out saponification reaction, temperature of reaction is 40~80 ℃, lanolin and alkali weight ratio are 10: 1.5~3.0, lanolin and alcoholic solution volume ratio are 1: 2~2.5, reaction finishes to steam under the normal pressure of back 80~90% solvent, and 100~110 ℃ down or vacuum-drying, after the cooling brown solid is saponified;
3) be that extraction agent extracts above-mentioned lanosterol in saponified with ethyl acetate, acetone, toluene, alkane or halogenated alkane, the total consumption of extraction agent is 8~16 times of saponified weight, 20~60 ℃ of following extraction agents divide 2~3 batches add saponified in, every batch was stirred 30~60 minutes, filter, merging filtrate gets lanosterol solution, when using ethyl acetate, acetone or methylbenzene extraction lanosterol, extraction agent was removed in evaporation after extraction was finished, and added hydrocarbon or halogenated alkane solution that hydrocarbon or halogenated hydrocarbon solvent convert lanosterol in the distillation residuum;
4) under the room temperature, the hydrocarbon of above-mentioned lanosterol or halogenated alkane solution wash with isopyknic 60~95% alcoholic solutions, and washing back branch removes the alcoholic solution layer, and hydrocarbon or the halohydrocarbon in the lanosterol solution removed in evaporation, and residuum cooling back is for containing cholesteric paste lanosterol;
5) with step 4) gained paste lanosterol selective crystallization cholesterol in alcoholic solvent, paste and alcoholic solvent volume ratio are 1: 1~5, slowly lower the temperature behind the dissolving paste down for 50~60 ℃, crystallization got needle-like crystal in 8~24 hours, filter, get faint yellow cholesterol crude product after the washing, thick cholesterol recrystallization in alcohol gets white needles cholesterol crystal.
2. the cholesteric method of separation and Extraction in the lanolin crude product according to claim 1 is characterized in that said polyoxyethylene is peregal and/or OP-10 nonionic surface active agent.
3. the cholesteric method of separation and Extraction is characterized in that step 2 in the lanolin crude product according to claim 1) said alkali is sodium hydroxide or potassium hydroxide.
4. the cholesteric method of separation and Extraction in the lanolin crude product according to claim 1 is characterized in that said alkane extraction agent is hexane, heptane, octane, sherwood oil or solvent oil.
5. the cholesteric method of separation and Extraction in the lanolin crude product according to claim 1 is characterized in that said halogenated alkane extraction agent is methylene dichloride, trichloromethane or ethylene dichloride.
6. the cholesteric method of separation and Extraction in the lanolin crude product according to claim 1 is characterized in that said selective crystallization of step 5) and recrystallization alcoholic solvent are methyl alcohol, ethanol or Virahol and the aqueous solution thereof.
CN 200410025654 2004-06-24 2004-06-24 Method for separating and extracting cholesterol from lanolin Expired - Fee Related CN1263769C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101307086B (en) * 2008-07-17 2012-11-14 浙江大学 Process for purifying 3beta-cholest-5,24-diene-3-alcohol y solvent crystallization method
CN101817859B (en) * 2010-06-02 2012-07-18 天津大学 Method for separating and extracting cholesterol in lanolin alcohol
CN102690312B (en) * 2012-05-24 2014-05-21 河南利伟生物药业股份有限公司 Purification method for lanolin cholesterol
CN102703557B (en) * 2012-06-14 2013-10-30 华南理工大学 Preparation method for phytosterol acetate formed by catalytic synthesis through enzymic method
CN102731602B (en) * 2012-07-04 2014-03-12 浙江大学 Method for separating cholesteryl ester from lanolin
CN103113446B (en) * 2013-03-15 2015-11-18 北京化工大学 The method of separation and Extraction sterol from lanolin
CN106699831B (en) * 2016-12-27 2018-12-21 河南利伟生物药业股份有限公司 A method of liquid crystal cholesterol is prepared using lanolin using complexometry
CN108047297A (en) * 2017-12-15 2018-05-18 江苏科鼐生物制品有限公司 A kind of method that melt pelletization prepares phytosterol
CN108558977A (en) * 2018-05-08 2018-09-21 刘健 A method of extracting ergosterol from amylofermentation object
CN108485821B (en) * 2018-05-29 2021-03-26 浙江花园生物高科股份有限公司 Method for synthesizing refined lanolin by base catalysis
CN109761867B (en) * 2019-02-28 2021-02-26 四川健腾生物技术有限公司 Vitamin D production by using lanolin as raw material3Is a new method for industrialization
CN111171098B (en) * 2020-01-14 2021-05-07 江西天新药业股份有限公司 Method for preparing cholesterol by using lanolin
CN114933625A (en) * 2021-06-30 2022-08-23 湖南益旺生物科技有限公司 Process method for extracting cholesterol from lanolin
CN114456221B (en) * 2022-01-25 2023-05-23 淮北师范大学 Cholesterol separation method
CN114426566B (en) * 2022-01-25 2023-07-21 淮北师范大学 Separation method of lanosterol in lanolin

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