CN113005031A - Membrane reactor for enzymolysis reaction and use method thereof - Google Patents
Membrane reactor for enzymolysis reaction and use method thereof Download PDFInfo
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- CN113005031A CN113005031A CN202110395386.0A CN202110395386A CN113005031A CN 113005031 A CN113005031 A CN 113005031A CN 202110395386 A CN202110395386 A CN 202110395386A CN 113005031 A CN113005031 A CN 113005031A
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- 239000012528 membrane Substances 0.000 title claims abstract description 69
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000006911 enzymatic reaction Methods 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000000926 separation method Methods 0.000 claims abstract description 33
- 239000000706 filtrate Substances 0.000 claims abstract description 16
- 102000004190 Enzymes Human genes 0.000 claims abstract description 12
- 108090000790 Enzymes Proteins 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 21
- 239000002585 base Substances 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims 1
- 239000000523 sample Substances 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002255 enzymatic effect Effects 0.000 abstract description 4
- 239000000413 hydrolysate Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 5
- 238000005034 decoration Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000004382 Amylase Substances 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 235000019418 amylase Nutrition 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000011942 biocatalyst Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
- C12M1/40—Apparatus specially designed for the use of free, immobilised, or carrier-bound enzymes, e.g. apparatus containing a fluidised bed of immobilised enzymes
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Biotechnology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Medicinal Chemistry (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The invention provides a membrane reactor for enzymolysis reaction and a use method thereof, belonging to the technical field of enzymatic chemical industry.A membrane reaction component is coupled with a membrane separation component, and the enzymatic reaction occurs in an enzymatic reaction tank (1); the acid-base adjusting component (4) maintains the enzyme reaction at a constant pH value; the membrane separation component (2) operates to separate products while performing enzyme reaction, so that the content of the products in the enzyme reaction tank is reduced, and enzymatic hydrolysate is collected in the filtrate storage tank (3) through a pipeline; the water replenishing component (5) adds water into the enzyme reaction tank (1) to keep the enzyme reaction concentration constant and the membrane component running stably. The membrane reactor disclosed by the invention can save the using amount of enzyme, improve the effect of enzyme reaction degree, shorten the time for separating enzymolysis products and improve the enzymolysis efficiency.
Description
Technical Field
The invention relates to the technical field of enzymatic chemical engineering, in particular to a membrane reactor for enzymatic reaction and a using method thereof.
Background
Enzymes are a special class of biocatalysts produced by organisms in the form of proteins or RNA. Enzymes can facilitate some reactions at appropriate pH, temperature and concentration. The enzymolysis reaction is to degrade the material through the action of enzyme, and is one of the important technologies for extracting the modern bioactive materials. At present, the commonly used enzymolysis assembly generally comprises a reaction tank body, a temperature control device, a stirring device and a pH adjusting device, and can ensure that the enzymolysis reaction can be smoothly carried out under the conditions of the optimal temperature and the pH value of enzyme. However, the existing enzymolysis assembly has the technical problem of low enzymolysis degree.
Disclosure of Invention
The invention aims to provide a membrane reactor for enzymolysis reaction and a use method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a membrane reactor for enzymolysis reaction, which comprises an enzyme reaction tank 1 and an acid-base adjusting component 4 connected with the enzyme reaction tank 1 through a pipeline, and is characterized by also comprising a membrane separation component 2, a filtrate storage tank 3 and a water supplementing component 5;
the enzyme reaction tank 1, the membrane separation component 2 and the filtrate storage tank 3 are sequentially connected through a pipeline;
the water supplementing assembly 5 is communicated with the interior of the enzyme reaction tank 1 through a pipeline.
Preferably, the body wall of the enzyme reaction tank 1 comprises an inner layer and an outer layer, and the inner layer and the outer layer form a hollow cavity; the outer wall of the hollow cavity is provided with a water inlet and a water outlet; the water inlet and the water outlet are respectively connected with an external circulating water tank 6 through pipelines.
Preferably, the acid-base adjusting component 4 comprises an acid storage tank and a base storage tank; the acid storage tank and the alkali storage tank are respectively communicated with the tank body of the enzyme reaction tank 1 through pipelines.
Preferably, a dosing pump and a valve are respectively arranged on pipelines communicated with the acid storage tank and the alkali storage tank and the tank body of the enzyme reaction tank 1.
Preferably, a discharge port 12 and a return port 11 are arranged on the wall of the enzyme reaction tank 1; a liquid inlet 22 and a liquid outlet 23 are arranged on the side wall of the membrane separation component 2; a liquid return port 21 is formed in the top wall of the membrane reaction assembly;
the discharge port 12 is connected with the liquid inlet 22 through a pipeline 9-1; the feed back port 11 is connected with the liquid return port 21 through a pipeline 9-2;
the pipeline 9-1 is provided with a circulating pump 7-3 and a booster pump 7-2; the pipeline 9-2 is communicated with the pipeline 9-1 through a branch pipe, and a communication point on the pipeline 9-1 is positioned between the circulating pump 7-3 and the booster pump 7-2.
Preferably, a stirring component 1-1 is also arranged in the enzyme reaction tank 1.
Preferably, a pH detector is further arranged in the enzyme reaction tank 1.
Preferably, the membrane separation module 2 comprises a ceramic membrane module; the cut-off molecular weight of the ceramic membrane component is 7500-8500 Da.
The invention also provides a using method of the membrane reactor in the scheme, which comprises the following steps:
adding a substrate and enzyme into an enzyme reaction tank 1 for enzymolysis reaction;
starting the acid-base adjusting component 4;
when the enzymolysis reaction is carried out for 20-30 min, the membrane separation component 2 and the water replenishing component 5 are started;
and when the enzymolysis reaction is carried out for 3-4 hours, the water supplementing assembly 5 is closed.
The invention provides a membrane reactor for enzymolysis reaction, which couples an enzyme reaction tank 1 with a membrane separation component 2, and the enzyme reaction occurs in the enzyme reaction tank 1; and an acid-base regulation component 4 to maintain the enzyme reaction at a constant pH value; the membrane separation component 2 separates products during enzyme reaction, so that the content of the products in the enzyme reaction tank can be reduced; collecting the enzymatic hydrolysate in a filtrate storage tank 3 through a pipeline; the water replenishing component 5 adds water into the enzyme reaction tank to keep the enzyme reaction concentration constant and the membrane component stably operates. The membrane reactor disclosed by the invention can save the using amount of enzyme, improve the effect of enzyme reaction degree, shorten the time for separating enzymolysis products and improve the enzymolysis efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a membrane reactor of the present invention, in FIG. 1, 1 is an enzyme reaction tank, 4 is an acid-base regulation component, 2 is a membrane separation component, 3 is a filtrate storage tank, 5 is a water replenishing component, 1-1 is a stirring component, 6 is a circulating water tank, 9-1 and 9-2 are pipelines, 7-6 is a circulating water pump, 7-4 and 7-5 are dosing pumps, 7-1 is a pressure water pump, 7-3 is a circulating pump, 7-2 is a pressure pump, 11 is a feed back port of the enzyme reaction tank 1, 12 is a discharge port of the enzyme reaction tank 1, 22 is a liquid inlet of the membrane separation component 2, 21 is a feed back port of the membrane separation component 2, 23 is a liquid outlet of the membrane separation component 2, 8-1, 8-2, 8-3, 8-4, 8-5, 8-6 and 8-7 are valves.
Detailed Description
The invention provides a membrane reactor for enzymolysis reaction, which comprises an enzyme reaction tank 1 and an acid-base regulating component 4 connected with the enzyme reaction tank 1 through a pipeline, and also comprises a membrane separation component 2, a filtrate storage tank 3 and a water supplementing component 5;
the enzyme reaction tank 1, the membrane separation component 2 and the filtrate storage tank 3 are sequentially connected through a pipeline;
the water supplementing assembly 5 is communicated with the interior of the enzyme reaction tank 1 through a pipeline.
In one embodiment of the invention, a schematic of the membrane reactor is shown in FIG. 1.
In one embodiment of the present invention, the enzyme reaction tank 1 further comprises a stirring assembly 1-1; the present invention does not specifically limit the structure of the stirring assembly 1-1, and may be implemented by using a conventional configuration in the art.
In one embodiment of the present invention, the body wall of the enzyme reaction tank 1 includes an inner layer and an outer layer, which form a hollow cavity; the outer wall of the hollow cavity is provided with a water inlet and a water outlet; the water inlet and the water outlet are respectively connected with an external circulating water tank 6 through pipelines; and a circulating water pump 7-6 is arranged on a pipeline connecting the water inlet and/or the water outlet with the external circulating water tank 6. In the invention, circulating water is arranged in the hollow cavity and used for heating or cooling the enzyme reaction tank 1 so as to control the enzymolysis temperature, the circulating water is stored in a circulating water tank 6, and the circulating water circulates in the hollow cavity under the pressure provided by a circulating water pump 7-6 through a pipeline.
In one embodiment of the present invention, the acid-base adjustment assembly 4 preferably includes an acid storage tank 4-1 and a base storage tank 4-2; the acid storage tank 4-1 and the alkali storage tank 4-2 are respectively communicated with the tank body of the enzyme reaction tank 1 through pipelines; the pipelines of the acid storage tank 4-1 and the alkali storage tank 4-2 communicated with the tank body of the enzyme reaction tank 1 are respectively provided with a dosing pump 7-4, a dosing pump 7-5, a valve 8-3 and a valve 8-4; the valves 8-3 and 8-4 are preferably electrically operated valves.
In the present invention, the acid-base adjusting component 4 is used for controlling the pH value of the enzymatic reaction in the enzyme reaction tank 1.
In the present invention, a pH detector is preferably disposed in the enzyme reaction tank 1, and the present invention does not specifically limit the pH detector, and may employ conventional arrangements in the art. In the invention, the pH detector is used for monitoring the pH value in the enzyme reaction tank 1, when the pH value of a substrate solution deviates from the optimum enzyme activity pH value, according to specific conditions, a valve 8-3 or a valve 8-4 is opened, and acid or alkali is added into the enzyme reaction tank under the action of a dosing pump 7-4 or a dosing pump 7-5 to adjust the pH value in the enzyme reaction tank 1.
In one embodiment of the invention, the enzyme reaction tank 1 and the water replenishing assembly 5 are connected through a pipeline; and a pressurized water pump 7-1 is preferably arranged on a pipeline connecting the enzyme reaction tank 1 and the water replenishing assembly 5 and is used for replenishing water into the tank body of the enzyme reaction tank 1, keeping the concentration of the enzyme reaction constant and stabilizing the operation of the membrane assembly. In the invention, a valve 8-1 and a valve 8-2 are preferably arranged on a pipeline connecting the enzyme reaction tank 1 and the water replenishing component 5; the valve 8-1 and the valve 8-2 are preferably respectively positioned at two sides of the pressurized water pump 7-1; the valves 8-1 and 8-2 are preferably electrically operated valves.
In one embodiment of the invention, the wall of the enzyme reaction tank 1 is provided with a discharge port 12 and a return port 11; a liquid inlet 22 and a liquid outlet 23 are arranged on the side wall of the membrane separation component 2; a liquid return port 21 is formed in the top wall of the membrane reaction assembly; the discharge port 12 is connected with the liquid inlet 22 through a pipeline 9-1; the feed back port 11 is connected with the liquid return port 21 through a pipeline 9-2; the pipeline 9-1 is provided with a circulating pump 7-3 and a booster pump 7-2; the pipeline 9-2 is communicated with the pipeline 9-1 through a branch pipe, and a communication point on the pipeline 9-1 is positioned between the circulating pump 7-3 and the booster pump 7-2.
In the invention, the circulating pump 7-3 and the pressurizing pump 7-2 are simultaneously started to filter and separate the enzymolysis liquid according to the required flow rate. In the present invention, the lift of the circulation pump 7-3 is preferably 25m, and the lift of the pressure pump 7-2 is preferably 30 m.
In one embodiment of the present invention, the pipe 9-1 is preferably provided with a valve 8-5 and a valve 8-6; the valve 8-5 is positioned between the discharge hole 12 of the enzyme reaction tank 1 and the pressure pump 7-2; the valve 8-6 is preferably located between the circulation pump 7-3 and the liquid inlet 22 of the membrane separation module 2; the valves 8-5 and 8-6 are each preferably electrically actuated valves.
In one embodiment of the present invention, the liquid outlet 23 of the membrane separation module 2 and the filtrate storage tank 3 are connected through a pipeline; a valve 8-7 is preferably arranged on a pipeline connecting the liquid outlet 23 of the membrane separation module 2 and the filtrate storage tank 3, and the valve 8-7 is preferably an electric valve.
In one embodiment of the present invention, the membrane separation module 2 preferably comprises a ceramic membrane module; the molecular weight cut-off of the ceramic membrane component is preferably 7500-8500 Da, and more preferably 8000 Da.
The invention also provides a using method of the membrane reactor in the scheme, which comprises the following steps:
adding a substrate and enzyme into an enzyme reaction tank 1 for enzymolysis reaction;
starting the acid-base adjusting component 4;
when the enzymolysis reaction is carried out for 20-30 min, the membrane separation component 2 and the water replenishing component 5 are started;
and when the enzymolysis reaction is carried out for 3-4 hours, the water supplementing assembly 5 is closed.
In the present invention, water is supplied to the enzyme reaction tank 1 at the same flow rate of the filtrate by the pressure water pump 7-1. In the invention, the same flow of filtrate is used for supplementing water into the enzyme reaction tank 1, so that the reaction concentration and the operation stability of the membrane separation component can be ensured.
In the invention, after the water replenishing component 5 is closed, the concentrated solution of the membrane separation component 2 continuously returns to the enzyme reaction tank 1, so that the concentration of the solution in the enzyme reaction tank 1 is increased, and the membrane separation component 2 continuously operates, thereby achieving the effects of deepening the enzymolysis degree, saving the enzyme dosage and saving the time for separating the enzymolysis products.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Example 1
Adding 1g of starch and 6g of amylase into an enzyme reaction tank 1, wherein the concentration of calcium ions is 150ppm, carrying out enzymolysis reaction, allowing effluent from the enzyme reaction tank 1 to enter a membrane separation component 2 under the action of a circulating pump 7-3 and a pressure pump 7-2, and allowing filtrate from the membrane separation component 2 to enter a filtrate storage tank 3.
Wherein the lift of the circulating pump 7-3 is 25m, and the lift of the pressure pump 7-2 is 30 m.
Starting the acid-base adjusting component 4, and adjusting the pH value to 5.0;
when the enzymolysis reaction is carried out for 25min, the membrane separation component 2 and the water replenishing component 5 are started;
when the enzymolysis reaction is carried out for 3 hours, the membrane separation component 2 is continuously operated after the water replenishing component 5 is closed, and the available enzymolysis liquid is obtained in the filtrate storage tank 3.
Compared with an intermittent kettle reactor (YM-5L), the reactor hydrolyzes starch with the same concentration to obtain glucose with the same concentration, and the time of the intermittent kettle reactor is 7-8 times of that of the enzymolysis reactor.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A membrane reactor for enzymolysis reaction comprises an enzyme reaction tank (1) and an acid-base adjusting component (4) connected with the enzyme reaction tank (1) through a pipeline, and is characterized by further comprising a membrane separation component (2), a filtrate storage tank (3) and a water supplementing component (5);
the enzyme reaction tank (1), the membrane separation component (2) and the filtrate storage tank (3) are sequentially connected through pipelines;
the water supplementing assembly (5) is communicated with the tank body of the enzyme reaction tank (1) through a pipeline.
2. A membrane reactor according to claim 1, wherein the body wall of the enzyme reaction tank (1) comprises an inner layer and an outer layer, which inner and outer layers form a hollow cavity; the outer wall of the hollow cavity is provided with a water inlet and a water outlet; the water inlet and the water outlet are respectively connected with an external circulating water tank (6) through pipelines.
3. A membrane reactor according to claim 1, wherein the pH adjusting module (4) comprises an acid storage tank and a base storage tank; the acid storage tank and the alkali storage tank are respectively communicated with the tank body of the enzyme reaction tank (1) through pipelines.
4. A membrane reactor according to claim 3, wherein the acid and base reservoirs are provided with dosing pumps and valves, respectively, on the conduits communicating with the body of the enzyme reaction tank (1).
5. A membrane reactor according to claim 1, wherein the wall of the enzyme reaction tank (1) is provided with a discharge port (12) and a return port (11); a liquid inlet (22) and a liquid outlet (23) are arranged on the side wall of the membrane separation component (2); a liquid return port (21) is arranged on the top wall of the membrane reaction assembly;
the discharge port (12) is connected with the liquid inlet (22) through a pipeline (9-1); the feed back port (11) is connected with the feed back port (21) through a pipeline (9-2);
a circulating pump (7-3) and a booster pump (7-2) are arranged on the pipeline (9-1); the pipeline (9-2) is communicated with the pipeline (9-1) through a branch pipe, and a communication point on the pipeline (9-1) is positioned between the circulating pump (7-3) and the booster pump (7-2).
6. A membrane reactor according to claim 1, wherein the enzyme reaction tank (1) is further provided with an agitation assembly (1-1).
7. A membrane reactor according to claim 1, characterized in that a pH probe is also arranged in the enzyme reaction tank (1).
8. A membrane reactor according to claim 1, wherein the membrane separation modules (2) comprise ceramic membrane modules; the cut-off molecular weight of the ceramic membrane component is 7500-8500 Da.
9. The method of using the membrane reactor of any of claims 1-8 comprising the steps of:
adding a substrate and enzyme into an enzyme reaction tank (1) for enzymolysis reaction;
starting the acid-base adjusting component (4);
when the enzymolysis reaction is carried out for 20-30 min, opening the membrane separation component (2) and the water replenishing component (5);
and when the enzymolysis reaction is carried out for 3-4 hours, the water supplementing assembly (5) is closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110395386.0A CN113005031A (en) | 2021-04-13 | 2021-04-13 | Membrane reactor for enzymolysis reaction and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110395386.0A CN113005031A (en) | 2021-04-13 | 2021-04-13 | Membrane reactor for enzymolysis reaction and use method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08243361A (en) * | 1995-03-08 | 1996-09-24 | Kurita Water Ind Ltd | Membrane separation device |
| CN101591614A (en) * | 2009-06-23 | 2009-12-02 | 江苏大学 | A kind of ultrasonic enzymatic membrane reactor |
| CN102212600A (en) * | 2011-04-29 | 2011-10-12 | 北京工商大学 | Method for preparing antioxidant peptides from oats by utilizing enzymatic membrane reactor |
| CN104531815A (en) * | 2014-12-10 | 2015-04-22 | 海门隆泰生物科技有限公司 | Method for preparing peptide-enriched product with high content of glutamine-bound peptide |
| CN111661967A (en) * | 2020-05-21 | 2020-09-15 | 莱特莱德（北京）环境技术股份有限公司 | System and method for recovering alkali in viscose fiber production squeezing waste liquid by using double-membrane method |
-
2021
- 2021-04-13 CN CN202110395386.0A patent/CN113005031A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08243361A (en) * | 1995-03-08 | 1996-09-24 | Kurita Water Ind Ltd | Membrane separation device |
| CN101591614A (en) * | 2009-06-23 | 2009-12-02 | 江苏大学 | A kind of ultrasonic enzymatic membrane reactor |
| CN102212600A (en) * | 2011-04-29 | 2011-10-12 | 北京工商大学 | Method for preparing antioxidant peptides from oats by utilizing enzymatic membrane reactor |
| CN104531815A (en) * | 2014-12-10 | 2015-04-22 | 海门隆泰生物科技有限公司 | Method for preparing peptide-enriched product with high content of glutamine-bound peptide |
| CN111661967A (en) * | 2020-05-21 | 2020-09-15 | 莱特莱德（北京）环境技术股份有限公司 | System and method for recovering alkali in viscose fiber production squeezing waste liquid by using double-membrane method |
Non-Patent Citations (1)
| Title |
|---|
| 缪佳瑜 等: "复合酶解结合膜分离技术制备秘鲁鱿鱼抗氧化肽的研究", 《食品科技》 * |
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Application publication date: 20210622 |