CN112174796A - Method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor - Google Patents
Method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor Download PDFInfo
- Publication number
- CN112174796A CN112174796A CN202010991744.XA CN202010991744A CN112174796A CN 112174796 A CN112174796 A CN 112174796A CN 202010991744 A CN202010991744 A CN 202010991744A CN 112174796 A CN112174796 A CN 112174796A
- Authority
- CN
- China
- Prior art keywords
- coenzyme
- silicon carbide
- water
- stirring
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C46/00—Preparation of quinones
- C07C46/10—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention relates to a method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor, which comprises the following process steps of pretreatment, extraction, crystallization, dissolution, chromatography, reduced pressure concentration, water washing and drying of the coenzyme Q10 fermentation liquor. By adopting the method, the effective content of the coenzyme Q10 finished product can reach 99 percent, and the total extraction yield can reach 95 percent. Compared with the prior domestic conventional process, the method has the advantages of high extraction yield, high product quality, simple extraction process, low production cost and the like, and is favorable for enhancing the market competitiveness of the product at home and abroad.
Description
Technical Field
The invention belongs to the technical field of antioxidant extraction, and particularly relates to a method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor generated by rhodobacter sphaeroides fermentation.
Background
Coenzyme Q10 is a fat-soluble antioxidant, can activate the nutrition of human cells and cell energy, has the functions of improving human immunity, enhancing antioxidation, delaying senility, enhancing human vitality and the like, is widely used for cardiovascular system diseases in medicine, and is widely used for nutritional health care products and food additives at home and abroad.
At present, for extraction and purification of coenzyme Q10 in domestic related documents, a ceramic membrane filtration process and a chromatography process are generally adopted, and the two extraction methods have advantages and disadvantages respectively.
For example, chinese patent "a method and apparatus for extracting coenzyme Q10" (CN 201911412590.8) adopts a ceramic membrane filtration process, which comprises the following steps: the method comprises the steps of leaching and evaporating bacterial powder obtained by filtering coenzyme Q10 fermentation liquor to obtain a coenzyme Q10 crude product, filtering by a small-aperture ceramic membrane, alkalifying, saponifying and filtering by a ceramic microfiltration membrane, and distilling a concentrated solution of the ceramic microfiltration membrane under reduced pressure to remove a solvent to obtain the coenzyme Q10. The problems of the method are that:
1. the method does not pretreat the fermentation liquor of the coenzyme Q10 before extraction and purification, so that the content of impurities in the crude product is high and exceeds more than 40 percent, and the method is not beneficial to the continuous operation of a downstream extraction and purification process.
2. The whole extraction and purification process has more steps, wherein the membrane filtration process and saponification reaction are carried out for 2 times, so that the extraction period is longer, and the production efficiency is reduced.
3. The problems of high impurity content of coenzyme Q10, particularly pigment in finished products, are not effectively solved by membrane filtration and saponification reaction, and the quality of the products is influenced.
For another example, chinese patent "a method for extracting and purifying coenzyme Q10" (CN 201810796126.2) adopts a chromatographic method to extract and purify coenzyme Q10, and the process thereof comprises: the adopted process comprises the steps of extraction, precipitation, decoloration and chromatographic refining, and the technology achieves the technical effects that the purity of the coenzyme Q10 product can reach more than 99.8 percent, the total yield can reach more than 98.5 percent, but the problems exist:
1. in the extraction process, the adsorption process and the chromatography process are combined respectively, so that the extraction period is longer and the production efficiency is lower.
2. In the adsorption process, the adsorbent is at least one of activated clay, diatomite and activated carbon, so that the yield of the product is influenced, and the yield of coenzyme Q10 is reduced by 1-2%.
3. The adsorbent used in the chromatography process is silica gel. In the adsorption process of coenzyme Q10, the silica gel adsorbent is found to have the conditions of small specific surface area, low adsorption quantity, low adsorption efficiency, poor adsorption effect and the like. Under the condition of large-scale production, the consumption of the silica gel adsorbent is large, the adsorption period is long, and the content of impurities in the collected coenzyme Q10 is higher and exceeds 2 percent through detection.
4. The embodiment of the invention has smaller scale and fails to embody the technical level of industrial mass production. Pilot-scale tests prove that the scale of the mushroom dregs is 50kg, and after three times of extraction and purification, the average yield of the final product is 90-92%, the purity is 93-95%, and the technical level cannot be achieved.
For another example, the Chinese patent "a method for preparing a pure coenzyme Q10" (CN 201710606521.5) adopts the following processes: firstly, carrying out microfiltration and spray drying on coenzyme Q10 fermentation liquor by a ceramic membrane to obtain a crude product, then leaching the crude product by acetone, carrying out phase separation and reduced pressure concentration on the obtained leaching liquor to obtain a coenzyme Q10 extraction concentrated solution, then carrying out petroleum ether extraction, silica gel column chromatography and reduced pressure distillation to concentrate the eluent, finally adding coenzyme Q10 seed crystals for crystallization, and carrying out reduced pressure drying to obtain a coenzyme Q10 pure product. The problems of the technology are as follows:
1. the technology does not describe the technical effect of the process, and the product extraction yield is low. In five embodiments, the total extraction yield is 73-7%, and the total yield is low.
3. The silica gel chromatography process is the same as the extraction and purification method of coenzyme Q10 (CN 201810796126.2).
Other patents, for example "a process for extracting and separating coenzyme Q10 from mushroom dregs" (CN 201610481472.2) disclose a process for extracting and preparing high-purity coenzyme Q10 from mushroom dregs, in which the mushroom dregs are used as raw materials to perform percolation extraction to obtain a coenzyme Q10 percolation extract, the coenzyme Q10 extract is subjected to multi-stage extraction to remove impurities to obtain a raffinate, and then the raffinate is subjected to crystallization treatment to finally obtain the high-purity coenzyme Q10 with the purity of more than 98%, and the yield is more than 95%. The percolation process is known as a dynamic leaching process. Firstly, the patent does not describe a coenzyme Q10 fermentation liquor pretreatment process, and secondly, fat-soluble impurities in the mushroom dregs can enter an organic solution through a percolation process; and finally, multi-stage extraction is adopted to remove impurities, so that most of impurities can be removed only, and the removal amount of the impurities is limited. Only by adopting the processes of percolation, multistage extraction and crystallization, the technical effect described in the patent can not be achieved at all through verification.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the method for extracting the coenzyme Q10 from the coenzyme Q10 fermentation liquor, which can effectively improve the extraction yield and content of the coenzyme Q10, reduce the production cost and has simple extraction process.
The technical scheme adopted for realizing the purpose is as follows:
a method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor is characterized by comprising the following process steps:
(1) pretreatment of
Filtering coenzyme Q10 fermentation liquor by using a plate frame, adding methanol into the obtained wet mushroom dregs, stirring, standing and filtering, adding water and sodium sulfite into the obtained wet mushroom dregs, stirring again, standing and filtering, and carrying out flash evaporation and drying on the obtained wet mushroom dregs to obtain solid mushroom dregs;
(2) leaching
Adding ethylene glycol-butyl ether into the solid fungus dregs, stirring, standing and filtering;
(3) crystallization of
Adding water into the filtrate obtained in the step (2), rapidly cooling to 0-5 ℃ within 30min, stirring, standing and filtering to obtain solid coenzyme Q10;
(4) dissolving and chromatography
Dissolving the obtained solid coenzyme Q10 by using butyl acetate, adding the solid coenzyme Q10 into chromatography equipment, carrying out chromatography by using butyl acetate as a mobile phase under the condition of a flow rate of 3-5L/min, and collecting a liquid showing yellow or orange yellow to obtain a coenzyme Q10 butyl acetate solution;
(6) concentrating under reduced pressure, washing with water and drying
The coenzyme Q10 butyl acetate solution is subjected to reduced pressure concentration, water washing, filtration and drying to obtain the pure coenzyme Q10.
In the step (1), the amount of the methanol is VMethanol:MWet mushroom dregs10kg of water in a proportion of 2-6L; the amount of water is according to VWater (W):MWet mushroom dregsAdding 10kg of sodium sulfite according to the proportion of 6-10L, wherein the amount of the sodium sulfite is MSodium sulfite:MWet mushroom dregsAdding 10kg of the powder in a proportion of 1-2 g; and the standing time is controlled to be 20-60 min.
In the step (2), the dosage of the ethylene glycol-butyl ether is VEthylene glycol monobutyl ether:MSolid mushroom dregs1kg of (= 4-8L); and the standing time is controlled to be 180-220 min.
In the step (3), the water consumption is VEthylene glycol monobutyl ether:VPurified water8-12L of = 1L; and the standing time is controlled to be 120-160 min.
In the step (4), the solubility of the solid coenzyme Q10 is controlled to be 20-30%.
In the step (4), the height-diameter ratio of a glass column in the chromatographic equipment is 5-6: 1, the filler is a porous silicon carbide microsphere composite material filled with polystyrene gel, and the dosage of the porous silicon carbide microsphere composite material is MFiller:MTotal amount of coenzyme Q10 fermentation broth1kg of a compound (I) = 2-4 kg:1kg, wherein MTotal amount of coenzyme Q10 fermentation broth (kg)= fermentation liquor unit (mg/L) × fermentation liquor volume (m)3）/1000。
The preparation process of the porous silicon carbide microsphere composite material filled with polystyrene gel comprises the following steps:
1) dissolving PEG2000 and gulonic acid in deionized water, adding 80% of nano silicon carbide powder in the total amount by 3-5 times under the condition of slow stirring by a magnetic stirrer, continuously adding a polyurethane solution with the mass concentration of 5% after uniform mixing, continuously stirring, slowly adding the rest 20% of nano silicon oxide powder, continuously stirring for 120-150 min to obtain gel-like nano silicon carbide slurry,
the dosage of the substances is as follows:
MPEG2000:Mgulonic acid:MNano silicon carbide powder: V5% polyurethane solution=3kg:1～2kg:5～6kg:14～15L；
2) Adding vacuum pump oil and Tween 20 into the gel-like nanometer silicon carbide slurry, stirring at the rotating speed of 700r/min for 40-60 min, adding saturated calcium sulfate solution, continuously stirring for 10-20 min, adding absolute ethyl alcohol, stirring for 80-100 min, standing for 60-80 min, pouring out upper pump oil after liquid level layering, collecting silicon carbide microspheres at the bottom of a beaker, thoroughly cleaning the microspheres with 40-50% ethanol and water, drying at 50-60 ℃, sieving the bonded microspheres with an 80-mesh standard sieve to obtain monodisperse silicon carbide ceramic microsphere green bodies,
the dosage of the substances is as follows: mNano silicon carbide powder:MVacuum pump oil:MTween 20：LSaturated calcium sulfate solution：LAnhydrous ethanol=1kg:3～4kg：0.5～0.6kg：4～5L：15～20L；
3) Sintering the silicon carbide ceramic microsphere green blank by adopting a high-temperature muffle furnace, which specifically comprises the following steps: firstly, raising the temperature to 200 ℃ at the speed of 10 ℃/min, and preserving the temperature for 30 min; then raising the temperature to 300 ℃ at the speed of 10 ℃/min, preserving the heat for 30min, finally raising the temperature to 500 ℃ at the speed of 5 ℃/min, and preserving the heat for 20 min; naturally cooling to room temperature to obtain porous silicon carbide microspheres;
4) soaking the porous silicon carbide microspheres in 10-20% polystyrene-butyl acetate solution, preserving heat for 60-80 min at 90-100 ℃ under aseptic conditions, slowly cooling to room temperature, adding purified water for grinding after the polystyrene gel is solidified, and screening to remove fragments to obtain the porous silicon carbide microsphere composite material filled with the polystyrene gel,
the dosage of the substances is as follows:
Mporous silicon carbide microspheres: L10-20% polystyrene-butyl acetate solution=1kg:3～5L。
In the step (5), in the vacuum concentration, the temperature is controlled to be 90-100 ℃, and the pressure is controlled to be-0.1-0 MPa.
In the step (5), the washing is carried out for 1 time by using purified water, and the using amount of the purified water is 5-10 times of the solid weight of the coenzyme Q10; the drying is carried out for 14-15 h by adopting a double-cone rotary vacuum dryer, the drying temperature is 30-40 ℃, the vacuum pressure is-0.02 to-0.08 MPa, and the operation frequency is adjusted to be 8-15 HZ according to the humidity of the material.
The technical advantages of the invention are embodied in that:
1. the method comprises the steps of firstly, carrying out pretreatment of processes such as leaching coenzyme Q10 fermentation liquor by using methanol (action: coenzyme Q10 in fungi residues is leached by using an organic solvent), sodium sulfite (action: coenzyme Q10 is in contact with oxygen in the air to cause oxidation, sodium sulfite is added to protect coenzyme Q10 and is not easy to oxidize), and then carrying out further extraction by using ethylene glycol-butyl ether, so that the extraction yield of coenzyme Q10 reaches 98%.
2. The invention adopts a low-temperature crystallization mode, effectively removes water-soluble impurities and ensures that the crystallization yield is more than 98 percent.
3. The invention uses the novel synthesized porous silicon carbide microsphere composite material filled with polystyrene gel as the filler in the chromatography process, the filler can effectively separate coenzyme Q10 and impurities, the chromatography period is shorter, and the period is shortened by about 7 hours compared with a silica gel filler (the period is more than 18 hours). After the chromatography is finished, the yield can reach more than 97 percent, and the effective content reaches 99 percent.
In conclusion, the method can lead the effective content of the coenzyme Q10 finished product to reach 99 percent and the total extraction yield to reach 95 percent. Compared with the prior domestic conventional process, the method has the advantages of high extraction yield, high product quality, simple extraction process, low production cost and the like, and is favorable for enhancing the market competitiveness of the product at home and abroad.
Detailed Description
The invention is illustrated below by way of examples, which are to be understood as being illustrative and not limiting. The scope and core content of the invention are to be determined by the claims.
In the following examples, the coenzyme 10 fermentation broth is prepared by fermentation of rhodobacter sphaeroides, and the process is the technology disclosed at present.
In the following examples, the aspect ratio of the glass column of the chromatography device was 5: 1, and the filler was a porous silicon carbide microsphere composite filled with polystyrene gel in the interior, and the amount of the filler was MFiller:MTotal amount of coenzyme Q10 fermentation broth1kg of a compound of formula (I) =3kg:1kg, wherein MTotal amount of coenzyme Q10 fermentation broth (kg)= fermentation liquor unit (mg/L) × fermentation liquor volume (m)3)/1000. Before use, the filler is added into the glass column, the butyl acetate is added into the column, and the column is soaked for 140 min. After the infiltration, the rinsing with butyl acetate was continued for 2 times. During the chromatography, the flow rate was controlled at 4L/min.
The preparation process of the porous silicon carbide microsphere composite material filled with polystyrene gel comprises the following steps:
1) dissolving PEG2000 and gulonic acid in deionized water, adding 80% of nano silicon carbide powder in a total amount by 4 times under the condition of slow stirring by a magnetic stirrer, continuously adding a polyurethane solution with the mass concentration of 5% after uniform mixing, continuously stirring, slowly adding the rest 20% of nano silicon oxide powder, continuously stirring for 130min to obtain nano silicon carbide slurry with uniformly dispersed particles and gelatinous slurry,
MPEG2000:Mgulonic acid:MNano silicon carbide powder: V5% polyurethane solution=3kg:1kg:6kg:14L；
2) Adding vacuum pump oil and Tween 20 into the gel-like nanometer silicon carbide slurry, stirring at the rotating speed of 700r/min for 60min, adding saturated calcium sulfate solution, continuously stirring for 15min, adding absolute ethyl alcohol, stirring for 100min, standing for 70min, pouring upper layer pump oil after liquid level delamination, collecting silicon carbide microspheres at the bottom of a beaker, thoroughly cleaning the microspheres with 50% ethanol and water, drying at 50-60 ℃, sieving the microspheres bonded together by a 80-mesh standard sieve to obtain monodisperse silicon carbide ceramic microsphere green bodies,
the dosage of the substances is as follows: mNano silicon carbide powder:MVacuum pump oil:MTween 20：LSaturated calcium sulfate solution：LAnhydrous ethanol=1kg: 4kg：0.5kg：4.5L：17L；
3) Sintering the silicon carbide ceramic microsphere green blank by adopting a high-temperature muffle furnace, which specifically comprises the following steps: firstly, raising the temperature to 200 ℃ at the speed of 10 ℃/min, and preserving the temperature for 30 min; then raising the temperature to 300 ℃ at the speed of 10 ℃/min, preserving the heat for 30min, finally raising the temperature to 500 ℃ at the speed of 5 ℃/min, and preserving the heat for 20 min; naturally cooling to room temperature to obtain porous silicon carbide microspheres;
4) soaking the porous silicon carbide microspheres in a 15% polystyrene-butyl acetate (butyl acetate is used as a solvent) solution, preserving the heat for 80min at 90-100 ℃ under aseptic conditions, and then slowly cooling to room temperature, so that the porous silicon carbide microspheres are filled with the polystyrene solution; after the polystyrene gel is solidified, taking out the silicon carbide microspheres deposited at the bottom, adding purified water for grinding, removing polystyrene fragments and crushed silicon carbide fragments through standard sieve screening and a fluidized bed to obtain the porous silicon carbide microsphere composite material filled with the polystyrene gel, after the polystyrene gel is solidified,
the dosage of the substances is as follows:
Mporous silicon carbide microspheres: L10-20% polystyrene-butyl acetate solution=1kg:4L。
Example 1
Coenzyme Q10 fermentation liquor 100m3The fermentation unit is 2980mg/L, and the total amount is 298 kg.
The fermentation liquor of the coenzyme Q10 is filtered by a plate frame to obtain wet mushroom dregs of which the volume is 23.2 tons, and is added with 4640L of methanol, stirred and kept stand for 10min, and then filtered to obtain wet mushroom dregs of which the volume is two.
13920L of primary water and 2.32kg of sodium sulfite are added into the wet mushroom dregs, the mixture is stirred and kept stand for 20min, the wet mushroom dregs are obtained by filtration, and the solid mushroom dregs are obtained by flash evaporation and drying, wherein the water content is 1.9 percent.
Adding 16540L of ethylene glycol-butyl ether into the solid fungi residue, stirring, standing for 180min, and filtering to obtain filtrate.
Adding purified water 132320L into the obtained filtrate, rapidly cooling to 5 deg.C within 30min, stirring and standing for 120min, and filtering to obtain solid coenzyme Q10294 kg with yield of 98%.
Adding 1460L butyl acetate into solid coenzyme Q10, and dissolving to control the concentration at 20%.
In the chromatographic equipment, the glass column diameter is 0.5 m, height is 2.5 m, and 596kg of filling agent is added. Adding coenzyme Q10 butyl acetate solution into the chromatographic column treated by butyl acetate, and taking butyl acetate as a mobile phase at the flow rate of 3L/min. The liquid showing yellow or orange-yellow color was collected to obtain a coenzyme Q10 butyl acetate solution.
The coenzyme Q10 butyl acetate solution is decompressed and concentrated to obtain 290kg of coenzyme Q10 solid, and the yield is 98.6%.
Adding purified water 1420L into coenzyme Q10 solid, washing with water for 60min, filtering, and drying with double cones to obtain pure coenzyme Q10289.7kg.
Through measurement and calculation, the total yield is as follows: 97.2 percent and the effective content of the finished product is 98.4 percent.
Example 2
Coenzyme Q10 fermentation liquor 100m3The fermentation unit is 2763mg/L, and the total amount is 276 kg.
And (3) filtering the coenzyme Q10 fermentation liquor by using a plate-and-frame filter to obtain wet mushroom dregs of which the volume is 22.8 tons, adding 6840L of methanol, stirring and standing for 30min, and filtering to obtain wet mushroom dregs of which the volume is two.
Adding 15960L of primary water and 2.74kg of sodium sulfite into the wet mushroom dregs, stirring, standing for 30min, filtering to obtain wet mushroom dregs, and performing flash evaporation drying to obtain 4024kg of solid mushroom dregs with the water content of 2.1%.
Adding ethylene glycol-butyl ether 20120L into the solid fungus residue, stirring and standing for 190min, and filtering to obtain filtrate.
Adding purified water 181080L into the obtained filtrate, rapidly cooling to 4 deg.C within 30min, stirring and standing for 130min, and filtering to obtain solid coenzyme Q10272 kg with yield of 98.5%.
Butyl acetate 1232L was added to the solid coenzyme Q10 to dissolve it, and the concentration was controlled at 22%.
The diameter of the glass column is 0.5 m, the height is 2.6 m, the filling agent 678kg is added, the coenzyme Q10 butyl acetate solution is added into the chromatography column after butyl acetate treatment, butyl acetate is taken as a mobile phase, and the flow rate is 3.5L/min. The liquid showing yellow or orange-yellow color was collected to obtain a coenzyme Q10 butyl acetate solution.
The coenzyme Q10 butyl acetate solution was concentrated under reduced pressure to obtain 268.6kg of coenzyme Q10 solid with a yield of 98.7%.
1600L of purified water is added into the solid coenzyme Q10, the solid coenzyme Q10 is washed by water for 70min, and the solid coenzyme Q10 is filtered and then bipyramidally dried to obtain the pure coenzyme Q10268.5kg.
Through measurement and calculation, the total yield is as follows: 97.3 percent and the effective content of the finished product is 98.5 percent.
Example 3
Coenzyme Q10 fermentation liquor 100m3The fermentation unit is 2860mg/L, and the total amount is 286 kg.
The coenzyme Q10 fermentation liquor is filtered by a plate frame to obtain wet mushroom dregs (23.1 tons), then methanol 9240L is added, stirred and stood for 40min, and finally the wet mushroom dregs (II) are obtained by filtering.
18480L of primary water and 3.47kg of sodium sulfite are added into the wet mushroom dregs, stirred and kept stand for 40min, filtered to obtain wet mushroom dregs, and then flash-dried to obtain 4052kg of solid mushroom dregs with the water content of 2.2 percent.
Adding 24312L ethylene glycol-butyl ether into the obtained solid fungus residue, stirring, standing for 200min, and filtering to obtain filtrate.
Adding purified water 243120L into the filtrate, rapidly cooling to 3 deg.C within 30min, stirring and standing for 140min, and filtering to obtain solid coenzyme Q10282 kg with yield of 98.6%.
Adding butyl acetate 1128L into solid coenzyme Q10 to dissolve, and controlling the concentration at 25%.
The diameter of the glass column is 0.5 m, the height is 2.8 m, 715kg of filler is added, a coenzyme Q10 butyl acetate solution is added into the chromatographic column treated by butyl acetate, butyl acetate is taken as a mobile phase, and the flow rate is 4L/min. The liquid showing yellow or orange-yellow color was collected to obtain a coenzyme Q10 butyl acetate solution.
The resulting coenzyme Q10 butyl acetate solution was concentrated under reduced pressure to give 278.6kg of coenzyme Q10 as a solid, with a yield of 98.8%.
Adding purified water 2230L into coenzyme Q10 solid, washing with water for 80min, filtering, and drying with double cones to obtain pure coenzyme Q10278.5kg.
Through measurement and calculation, the total yield is as follows: 97.4 percent and the effective content of the finished product is 98.7 percent.
Example 4
Coenzyme Q10 fermentation liquor 100m3Fermentation unit 2900mg/L, total amount 290 kg.
The fermentation liquor of the coenzyme Q10 is filtered by a plate frame to obtain wet mushroom dregs of which the weight is 23.3 tons, methanol 11650L is added, the mixture is stirred and kept stand for 50min, and the wet mushroom dregs are obtained by filtering.
Adding 20970L of primary water and 4.19kg of sodium sulfite into the wet mushroom dregs, stirring and standing for 50min, filtering to obtain wet mushroom dregs, and performing flash evaporation drying to obtain 4101kg of solid mushroom dregs with the water content of 2.4%.
Adding 28707L of ethylene glycol-butyl ether into the solid fungus residues, stirring, standing for 210min, and filtering to obtain filtrate.
Adding purified water 315777L into the filtrate, rapidly cooling to 2 deg.C within 30min, stirring and standing for 150min, and filtering to obtain solid coenzyme Q10286 kg with yield of 98.5%.
Adding butyl acetate 1020L into solid coenzyme Q10 to dissolve, and controlling the concentration at 28%.
The diameter of the glass column is 0.5 m, the height is 2.9 m, the filling agent is added with 1001kg, the chromatography column processed by butyl acetate is added with coenzyme Q10 butyl acetate solution, butyl acetate is taken as a mobile phase, and the flow rate is 4.5L/min. The liquid showing yellow or orange-yellow color was collected to obtain a coenzyme Q10 butyl acetate solution.
The resulting coenzyme Q10 butyl acetate solution was concentrated under reduced pressure to give 282.3kg of coenzyme Q10 as a solid, with a yield of 98.7%.
Adding 2500L of purified water into the solid coenzyme Q10, washing with water for 90min, filtering, and drying by double cones to obtain pure coenzyme Q10282.2kg.
Through measurement and calculation, the total yield is as follows: 97.3 percent and the effective content of the finished product is 98.5 percent.
Example 5
Coenzyme Q10 fermentation liquor 100m3The fermentation unit is 2751mg/L, and the total amount is 275.1 kg.
The coenzyme Q10 fermentation liquor is filtered by a plate frame to obtain wet mushroom dregs of which the volume is 22.1 tons, methanol of which the volume is 16506L is added, the mixture is stirred and kept stand for 60min, and the wet mushroom dregs are obtained by filtering.
22100L of primary water and 4.42kg of sodium sulfite are added into the wet mushroom dregs II, stirred and kept stand for 60min, filtered to obtain wet mushroom dregs III, and subjected to flash evaporation drying to obtain 4085kg of solid mushroom dregs with the water content of 2.0 percent.
Adding 32680L ethylene glycol-butyl ether into the fungus residue, stirring, standing for 220min, and filtering to obtain filtrate.
Adding purified water 392160L into the filtrate, rapidly cooling to 0 deg.C within 30min, stirring and standing for 160min, and filtering to obtain solid coenzyme Q10271 kg with yield of 98.4%.
Butyl acetate 903L was added to the solid coenzyme Q10 to dissolve the coenzyme Q, and the concentration was controlled at 30%.
The diameter of the glass column is 0.5 m, the height is 3m, 1100kg of filling agent is added, coenzyme Q10 butyl acetate solution is added into the chromatographic column processed by butyl acetate, butyl acetate is taken as a mobile phase, and the flow rate is 5L/min. The liquid showing yellow or orange-yellow color was collected to obtain a coenzyme Q10 butyl acetate solution.
The coenzyme Q10 butyl acetate solution was concentrated under reduced pressure to obtain 267.2kg of coenzyme Q10 solid with a yield of 98.6%.
Adding 2500L of purified water into the solid coenzyme Q10, washing with water for 90min, filtering, and drying by double cones to obtain the pure coenzyme Q10267.1kg.
Through measurement and calculation, the total yield is as follows: 97.1 percent and the effective content of the finished product is 98.4 percent.
Comparative example 1
Coenzyme Q10 fermentation liquor 100m3The fermentation unit is 2834mg/L, and the total amount of the coenzyme Q10 is 283.4 kg.
The fermentation liquor is extracted by ethyl acetate-methanol solvent and evaporated to dryness to obtain 278.9kg of coenzyme Q10 crude product, and the yield is 98.4%. Adding nonpolar solvent n-hexane into the crude coenzyme Q10 product to dissolve coenzyme Q10.
Filtering the obtained solution by using a small-aperture ceramic membrane to remove insoluble impurities and high-molecular-weight impurities; in the step, the average pore diameter of the small-pore-diameter ceramic membrane is 1-100nm, preferably 5-10nm, and some suspended particles and macromolecular impurities are filtered.
Adding alkali liquor into the obtained filtrate to carry out saponification reaction; the alkali solution is sodium hydroxide with the concentration of 5wt%, the addition amount of the alkali solution is 0.4 times of that of the filtrate, and the temperature is controlled at 24 ℃.
Sequentially adding methanol, ethanol and water into the saponification reaction liquid, simultaneously filtering by using a ceramic microfiltration membrane, and distilling the concentrated solution of the ceramic microfiltration membrane under reduced pressure to remove the solvent to obtain coenzyme Q10; the total volume of the added methanol and ethanol is controlled to be 5 times of the volume of the saponification reaction liquid, and the water washing amount of the added water is controlled to be 1 time of the volume of the saponification reaction liquid. The microfiltration membrane subjected to hydrophobic modification treatment is adopted, and the water drop contact angle on the surface of the microfiltration membrane ranges from 100 DEG to 160 deg.
258kg of finished coenzyme Q10 product, the content is 90.4 percent by detection, and the yield is 91.0 percent.
Comparative example 2
The total amount of the fermented bacteria was 1000kg and the coenzyme Q10 was 71.2 kg. Performing continuous countercurrent ultrasonic extraction (5% of ethyl acetate-95% of n-hexane as an extractant), feeding the extract into a dynamic circulation low-temperature evaporation concentrator for evaporation and concentration, wherein the concentration temperature is 35 ℃, the vacuum degree is-0.085 MPa, 68.2kg of coenzyme Q10 extract is obtained, the content of coenzyme Q10 in the extract is measured to be 65.72kg, the extraction yield is 92.3%, and the content of a coenzyme Q10 crude product is 87.5%.
Comparative example 3
Collecting coenzyme Q10 fermentation broth 1m3(fermentation unit 2900 mg/L), filtering with ceramic membrane microfiltration membrane (aperture 0.1 um), feeding at 25 deg.C, dialyzing at a ratio of 1:1.5, and concentrating by 1.8 times to obtain 231L membrane slurry.
And (3) spray-drying the membrane slurry, controlling the air inlet temperature to be 140-160 ℃ and the air outlet temperature to be 60-70 ℃, and obtaining 3.1kg of a coenzyme Q10 crude product, wherein the effective content is 87.9 percent and the yield is 91.3 percent.
Adding acetone 3 times the weight of the crude product, adding 0.5 ‰ (w/v) zeolite, slowly heating to 49 deg.C, refluxing for 2.0hr, filtering with ceramic filter core filter (pore diameter of 0.5 μm), and repeatedly leaching the residue once again under the same leaching condition. Collecting the leaching solution, transferring into a phase separation tank, adding 15% (w/v) NaCl saturated solution, stirring at 28 deg.C for 30min, standing for 20min, collecting supernatant, and distilling under reduced pressure to obtain coenzyme Q10 extract concentrate 3.8kg, with effective content of 66.11% and yield of 92.2%.
Dissolving the acetone extract concentrate in petroleum ether, adding coenzyme Q10 concentrate 3.0 times the volume, adding equal volume of water, stirring for 10min, standing, separating water, collecting petroleum ether layer, purifying and separating in silica gel column, eluting with petroleum ether at feeding speed of 2BV/h, eluting speed of 1.5BV/h and feeding temperature of 25 deg.C, collecting eluate containing coenzyme Q10, and distilling under reduced pressure to obtain purified coenzyme Q10 extract concentrate 2.8kg, with effective content of 80.5% and yield of 88%.
Adding absolute ethanol with the volume of 2 times of the weight of the purified coenzyme Q10 concentrate obtained by distilling and concentrating the eluent under reduced pressure into the concentrate, heating the concentrate to 48 ℃, stirring the concentrate for dissolving, and filtering the solution while the concentrate is hot; slowly cooling the filtrate to 28 ℃ under stirring, adding 0.02 per mill w/v coenzyme Q10 seed crystal, adding deionized water until crystal precipitation, continuously adding deionized water until the total added water amount is 3 times (978ml) of the weight of the purified coenzyme Q10 concentrate, controlling the temperature at 20 ℃, keeping the temperature for 9.0 hours, filtering, and drying wet crystals under reduced pressure to obtain 2.2kg of a coenzyme Q10 pure product, wherein the content is 98.0 percent, and the total yield is 75.8 percent.
Comparative example 4
Weighing 1000g (0.06 kg of coenzyme Q10) of bacterial residues (wherein the mass percent of the coenzyme Q10 is 2.6%), filling the bacterial residues into a percolation column (phi 20.0 multiplied by 35cm) by a wet method, after the bacterial residues are uniformly filled, keeping the stacking volume about 1300mL, soaking the bacterial residues for 2 hours at a constant temperature of 10 ℃ to fully swell the bacterial residues, opening an outlet valve of the percolation column, continuously adding n-hexane from the top of the column at the same time, and controlling the flow rate to be 2.5-3.0 mL/min until the volume of the collected percolation liquid is 1250 mL. The operation is repeated for 1 time according to the steps to obtain the percolate with the volume of 2480mL and the content of coenzyme Q10 of 0.023kg/L, and the yield is 95.1%.
Concentrating the percolate to remove solvent, dissolving with n-hexane, and making into solution with solid concentration of 300 mg/mL. Three-stage cross-flow extraction is carried out, and N, N-dimethylformamide with the same amount is added into each stage to be used as an extracting agent. After the extraction is finished, the total extraction yield is 89.6 percent
The solution is cooled and crystallized for 24h, then filtered and washed with a suitable amount of cold ethanol. Fully pumping and drying the mixture for 6 hours at the temperature of 30 ℃ to obtain 0.044kg of yellow coenzyme Q10 refined product with the purity of 98.0 percent and the coenzyme Q10 yield of 74.2 percent in the whole process based on the coenzyme Q10 in the mushroom dregs.
Comparative example 5
Coenzyme Q10 fermentation liquor 100m3The fermentation unit is 2843mg/L, and the total amount is 2.84 kg.
Carrying out solid-liquid separation on fermentation liquor, drying, crushing the bacterial residues to obtain 4.2 tons of bacterial residues, mixing the bacterial residues with n-hexane according to the mass ratio of 1: 2, stirring and leaching after uniformly mixing, leaching for 1.5 hours at the temperature of 55 ℃, filtering through a microfiltration membrane, and collecting an extracting solution and retentate; the microfiltration membrane is an inorganic ceramic membrane, the interception molecular weight is 2000Da, and the filtering temperature is 40 ℃;
mixing the obtained extractive solution with alkaline alcohol solution (1L solution containing 80g sodium chloride, 20g sodium hydroxide, 80mL methanol, and the balance water) at volume ratio of 1: 2, oscillating for 5min, standing for layering, collecting organic phase, rotary evaporating at 55 deg.C and vacuum degree of 0.04Mpa for concentration, and re-dissolving the obtained concentrated solution with n-hexane;
performing silica gel column chromatography on the obtained liquid, and eluting by using a normal hexane solution containing 3% (V/V) isopropyl ether at the flow rate of 1 column volume per hour until no obvious yellow color exists; then, the coenzyme Q10 eluent is decompressed and concentrated under the conditions of the temperature of 55 ℃ and the vacuum degree of 0.04 Mpa; dissolving the obtained concentrated solution in anhydrous ethanol, refrigerating at 0 deg.C overnight, vacuum-filtering to obtain coenzyme Q10 colloid; finally, vacuum drying is carried out at the temperature of 2 ℃ to obtain pure coenzyme Q102.4kg with the purity of 98.01 percent; the yield thereof was found to be 86%.
Claims (9)
1. A method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor is characterized by comprising the following process steps:
(1) pretreatment of
Filtering coenzyme Q10 fermentation liquor by using a plate frame, adding methanol into the obtained wet mushroom dregs, stirring, standing and filtering, adding water and sodium sulfite into the obtained wet mushroom dregs, stirring again, standing and filtering, and carrying out flash evaporation and drying on the obtained wet mushroom dregs to obtain solid mushroom dregs;
(2) leaching
Adding ethylene glycol-butyl ether into the solid fungus dregs, stirring, standing and filtering;
(3) crystallization of
Adding water into the filtrate obtained in the step (2), rapidly cooling to 0-5 ℃ within 30min, stirring, standing and filtering to obtain solid coenzyme Q10;
(4) dissolving and chromatography
Dissolving the obtained solid coenzyme Q10 by using butyl acetate, adding the solid coenzyme Q10 into chromatography equipment, carrying out chromatography by using butyl acetate as a mobile phase under the condition of a flow rate of 3-5L/min, and collecting a liquid showing yellow or orange yellow to obtain a coenzyme Q10 butyl acetate solution;
(6) concentrating under reduced pressure, washing with water and drying
The coenzyme Q10 butyl acetate solution is subjected to reduced pressure concentration, water washing, filtration and drying to obtain the pure coenzyme Q10.
2. The method for extracting coenzyme Q10 from a coenzyme Q10 fermentation broth according to claim 1, wherein in the step (1), the amount of methanol is VMethanol:MWet mushroom dregs10kg of water in a proportion of 2-6L; the amount of water is according to VWater (W):MWet mushroom dregsAdding 10kg of sodium sulfite according to the proportion of 6-10L, wherein the amount of the sodium sulfite is MSodium sulfite:MWet mushroom dregsAdding 10kg of the powder in a proportion of 1-2 g; and the standing time is controlled to be 20-60 min.
3. The method for extracting coenzyme Q10 from coenzyme Q10 fermentation broth according to claim 1, wherein in the step (2), the ethylene glycol-butyl ether is used in an amount according to VEthylene glycol monobutyl ether:MSolid mushroom dregs1kg of (= 4-8L); and the standing time is controlled to be 180-220 min.
4. The method for extracting coenzyme Q10 from a coenzyme Q10 fermentation broth according to claim 1, wherein in the step (3), the amount of water is VEthylene glycol monobutyl ether:VPurified water8-12L of = 1L; and the standing time is controlled to be 120-160 min.
5. The method for extracting coenzyme Q10 from the coenzyme Q10 fermentation liquor according to claim 1, wherein the solubility of the solid coenzyme Q10 in the step (4) is controlled to be 20-30%.
6. The method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor according to claim 1, wherein in the step (4), the aspect ratio of the glass column in the chromatography equipment is 5-6: 1, and the filling agent is a porous silicon carbide microsphere composite material filled with polystyrene gel and used in an amount of MFiller:MTotal amount of coenzyme Q10 fermentation broth=2～4kg:1kg。
7. The method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor according to claim 6, wherein the preparation process of the porous silicon carbide microsphere composite material filled with polystyrene gel comprises the following steps:
1) dissolving PEG2000 and gulonic acid in deionized water, adding 80% of nano silicon carbide powder in the total amount by 3-5 times under the condition of slow stirring by a magnetic stirrer, continuously adding a polyurethane solution with the mass concentration of 5% after uniform mixing, continuously stirring, slowly adding the rest 20% of nano silicon oxide powder, continuously stirring for 120-150 min to obtain gel-like nano silicon carbide slurry,
the dosage of the substances is as follows:
MPEG2000:Mgulonic acid:MNano silicon carbide powder: V5% polyurethane solution=3kg:1～2kg:5～6kg:14～15L；
2) Adding vacuum pump oil and Tween 20 into the gel-like nanometer silicon carbide slurry, stirring at the rotating speed of 700r/min for 40-60 min, adding saturated calcium sulfate solution, continuously stirring for 10-20 min, adding absolute ethyl alcohol, stirring for 80-100 min, standing for 60-80 min, pouring out upper pump oil after liquid level layering, collecting silicon carbide microspheres at the bottom of a beaker, thoroughly cleaning the microspheres with 40-50% ethanol and water, drying at 50-60 ℃, sieving the bonded microspheres with an 80-mesh standard sieve to obtain monodisperse silicon carbide ceramic microsphere green bodies,
the dosage of the substances is as follows: mNano silicon carbide powder:MVacuum pump oil:MTween 20：LSaturated calcium sulfate solution：LAnhydrous ethanol=1kg:3～4kg：0.5～0.6kg：4～5L：15～20L；
3) Sintering the silicon carbide ceramic microsphere green blank by adopting a high-temperature muffle furnace, which specifically comprises the following steps: firstly, raising the temperature to 200 ℃ at the speed of 10 ℃/min, and preserving the temperature for 30 min; then raising the temperature to 300 ℃ at the speed of 10 ℃/min, preserving the heat for 30min, finally raising the temperature to 500 ℃ at the speed of 5 ℃/min, and preserving the heat for 20 min; naturally cooling to room temperature to obtain porous silicon carbide microspheres;
4) soaking the porous silicon carbide microspheres in 10-20% polystyrene-butyl acetate solution, preserving heat for 60-80 min at 90-100 ℃ under aseptic conditions, slowly cooling to room temperature, adding purified water for grinding after the polystyrene gel is solidified, and screening to remove fragments to obtain the porous silicon carbide microsphere composite material filled with the polystyrene gel,
the dosage of the substances is as follows:
Mporous silicon carbide microspheres: L10-20% polystyrene-butyl acetate solution=1kg:3～5L。
8. The method for extracting coenzyme Q10 from the coenzyme Q10 fermentation broth as claimed in claim 1, wherein in the step (5), the temperature is controlled to 90-100 ℃ and the pressure is controlled to-0.1-0 MPa in the reduced pressure concentration.
9. The method for extracting coenzyme Q10 from the coenzyme Q10 fermentation broth according to claim 1, wherein in the step (5), the washing is 1 time of washing with purified water, and the amount of the washing is 5-10 times of the solid weight of the coenzyme Q10; the drying is carried out for 14-15 h by adopting a double-cone rotary vacuum dryer, the drying temperature is 30-40 ℃, the vacuum pressure is-0.02 to-0.08 MPa, and the operation frequency is adjusted to be 8-15 HZ according to the humidity of the material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010991744.XA CN112174796B (en) | 2020-09-21 | 2020-09-21 | Method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor |
| PCT/CN2021/115304 WO2022057603A1 (en) | 2020-09-21 | 2021-08-30 | Method for extracting coenzyme q10 from fermentation broth of coenzyme q10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010991744.XA CN112174796B (en) | 2020-09-21 | 2020-09-21 | Method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112174796A true CN112174796A (en) | 2021-01-05 |
| CN112174796B CN112174796B (en) | 2023-02-14 |
Family
ID=73957018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010991744.XA Active CN112174796B (en) | 2020-09-21 | 2020-09-21 | Method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112174796B (en) |
| WO (1) | WO2022057603A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022057603A1 (en) * | 2020-09-21 | 2022-03-24 | 宁夏泰胜生物科技有限公司 | Method for extracting coenzyme q10 from fermentation broth of coenzyme q10 |
| CN115819211A (en) * | 2022-12-29 | 2023-03-21 | 广东润和生物科技有限公司 | Coenzyme Q10 separation and purification method |
| CN116063254A (en) * | 2021-10-30 | 2023-05-05 | 宁夏泰胜生物科技有限公司 | Method for purifying crude orlistat |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070025976A1 (en) * | 2005-08-01 | 2007-02-01 | Cargill, Inc. | Process for the purification of coenzyme Q10 |
| CN106146278A (en) * | 2016-06-23 | 2016-11-23 | 浙江大学 | A kind of technique extracting separation coenzyme Q10 from dreg |
| CN108863743A (en) * | 2018-07-19 | 2018-11-23 | 浙江新和成股份有限公司 | The method for extraction and purification of Co-Q10 and Co-Q10 prepared therefrom |
| CN109400458A (en) * | 2018-11-30 | 2019-03-01 | 内蒙古金达威药业有限公司 | A method of the separation and Extraction Co-Q10 from microbial fermentation solution |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55159797A (en) * | 1979-05-30 | 1980-12-12 | Godo Shiyusei Kk | Purification of coenzyme q |
| MY171902A (en) * | 2009-11-16 | 2019-11-06 | Biovites Corp Sdn Bhd | Production of natural ubiquinone and ubiquinol by extraction from palm plant |
| CN112174796B (en) * | 2020-09-21 | 2023-02-14 | 宁夏泰胜生物科技有限公司 | Method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor |
-
2020
- 2020-09-21 CN CN202010991744.XA patent/CN112174796B/en active Active
-
2021
- 2021-08-30 WO PCT/CN2021/115304 patent/WO2022057603A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070025976A1 (en) * | 2005-08-01 | 2007-02-01 | Cargill, Inc. | Process for the purification of coenzyme Q10 |
| CN106146278A (en) * | 2016-06-23 | 2016-11-23 | 浙江大学 | A kind of technique extracting separation coenzyme Q10 from dreg |
| CN108863743A (en) * | 2018-07-19 | 2018-11-23 | 浙江新和成股份有限公司 | The method for extraction and purification of Co-Q10 and Co-Q10 prepared therefrom |
| CN109400458A (en) * | 2018-11-30 | 2019-03-01 | 内蒙古金达威药业有限公司 | A method of the separation and Extraction Co-Q10 from microbial fermentation solution |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022057603A1 (en) * | 2020-09-21 | 2022-03-24 | 宁夏泰胜生物科技有限公司 | Method for extracting coenzyme q10 from fermentation broth of coenzyme q10 |
| CN116063254A (en) * | 2021-10-30 | 2023-05-05 | 宁夏泰胜生物科技有限公司 | Method for purifying crude orlistat |
| CN115819211A (en) * | 2022-12-29 | 2023-03-21 | 广东润和生物科技有限公司 | Coenzyme Q10 separation and purification method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022057603A1 (en) | 2022-03-24 |
| CN112174796B (en) | 2023-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112174796B (en) | Method for extracting coenzyme Q10 from coenzyme Q10 fermentation liquor | |
| CN106008645B (en) | A kind of method that momordica grosvenori glycoside V is extracted from Momordica grosvenori | |
| CN105294790B (en) | A method of extracting high-purity stevioside from STEVIA REBAUDIANA | |
| CN101935278A (en) | Method for extracting, separating and purifying chlorogenic acid through folium cortex eucommiae | |
| CN112110979B (en) | Method for extracting tea saponin | |
| CN110272932A (en) | A kind of preparation method of lucid ganoderma spore powder polysaccharide peptide | |
| CN102516325A (en) | Method for producing crocin with higher than 95% purity from gardenia | |
| CN112472727B (en) | Method for co-producing ginkgo leaf extract, terpene lactone and shikimic acid | |
| WO2020207130A1 (en) | Process for separating and purifying artemisinin | |
| CN111875488A (en) | Curcumin extraction and purification method | |
| CN107337593B (en) | Preparation method of coenzyme Q10 pure product | |
| CN111303107B (en) | Method for extracting dihydromyricetin from vine tea | |
| CN111056941B (en) | Method for preparing high-purity shikimic acid by utilizing ginkgo leaf extract chromatography waste liquid | |
| CN107125371A (en) | A kind of tealeaves high efficiency extraction and the technique utilized | |
| CN111620846A (en) | Comprehensive utilization method of citrus peel residues | |
| CN111018939A (en) | Rapid refining method of tea saponin | |
| CN109369753A (en) | A method of extracting aurantiin from shaddock okra fruit | |
| CN110878014B (en) | Method for rapidly extracting gingerol | |
| CN107936073A (en) | One kind improves the water miscible method of tartaric acid acetylisovaleryl tylosin | |
| CN108558972A (en) | A kind of preparation method of high-purity diosmin | |
| CN1534008A (en) | Method of extracting purified solanesol from tobacco leaf | |
| CN1176087C (en) | High-performance camptothecin producing technology | |
| CN103992296B (en) | A kind of preparation method of orlistat | |
| CN108299538B (en) | Method for removing isoursodesoxycholic acid in duck bile | |
| CN107739306B (en) | A method for preparing refined herba Rosmarini officinalis extract |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |