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31results about How to "Achieve the purpose of enrichment" patented technology
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Water generating method by utilizing separating membrane to enrich air water vapor and device thereof
InactiveCN101851946AAchieve the purpose of enrichmentContinuously workingDispersed particle separationVapor condensationWater vaporWater production
The invention discloses a water generating method by utilizing separating membrane to enrich air water vapor and device thereof. The water generating method includes that membrane dehumidification assembly and compression method are adopted to carry out air dehumidification treatment, then sweep gas is input into the water vapor side of the membrane dehumidification assembly by virtue of pipeline to realize enrichment of water vapor, and finally condensing is carried out on the high humidity sweep gas for enriching water vapor, thus obtaining water in liquid state or solid state. Compared with absorption method, the invention has the advantages of continuous operation process, no corrosion problem, easy maintenance and low energy consumption; the adopted refrigeration working medium is air, no pollution problem is produced, and compressor and expansion machine are all centrifugal machineries, rotating speed is high, thus equipment volume is small and weight is light under unit water production rate; and meanwhile the low temperature water vapor cooling medium at the outlet of the cold side passage of the main water generating device is led into the cold side passage of the secondary water generating device, so as to cool the air from atmosphere environment and obtain extra water yield.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Water generating method by utilizing separating membrane to enrich air water vapor and device thereof
InactiveCN101851946BAchieve the purpose of enrichmentContinuously workingDispersed particle separationVapor condensationWater vaporWater production
The invention discloses a water generating method by utilizing separating membrane to enrich air water vapor and device thereof. The water generating method includes that membrane dehumidification assembly and compression method are adopted to carry out air dehumidification treatment, then sweep gas is input into the water vapor side of the membrane dehumidification assembly by virtue of pipelineto realize enrichment of water vapor, and finally condensing is carried out on the high humidity sweep gas for enriching water vapor, thus obtaining water in liquid state or solid state. Compared with absorption method, the invention has the advantages of continuous operation process, no corrosion problem, easy maintenance and low energy consumption; the adopted refrigeration working medium is air, no pollution problem is produced, and compressor and expansion machine are all centrifugal machineries, rotating speed is high, thus equipment volume is small and weight is light under unit water production rate; and meanwhile the low temperature water vapor cooling medium at the outlet of the cold side passage of the main water generating device is led into the cold side passage of the secondary water generating device, so as to cool the air from atmosphere environment and obtain extra water yield.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Method for extracting bromine from bromine-containing solution
The invention discloses a method for extracting bromine from a bromine-containing solution. The method comprises the following steps: 1) acidifying the bromine-containing solution, and oxidizing; 2) carrying out extraction operation on the oxidized mixed solution in the step 1); 3) carrying out back extraction operation on the bromine-containing extraction organic phase obtained in the step 2); and 4) acidifying the back extraction solution obtained in the step 3) to precipitate bromine, thereby obtaining the simple substance bromine. By adopting the oxidization-extraction process, the method has the advantages of high extraction rate, simple equipment, low energy consumption and the like; the bromine extraction rate reaches 98% or above; and the extractant can be recovered.
Owner:HARBIN INST OF TECH AT WEIHAI
Functionalized mesoporous molecular sieve and application of functionalized mesoporous molecular sieve in recovering noble metal
InactiveCN102019167AImprove adsorption capacityImprove adsorption efficiencyOther chemical processesWater/sewage treatment by sorptionPlatinumMolecular sieve
The invention discloses a functionalized mesoporous molecular sieve and application of the functionalized mesoporous molecular sieve in recovering noble metal. The functionalized mesoporous molecular sieve is a silicon mesoporous molecular sieve grafted with amido or sulfydryl. The application of the functionalized mesoporous molecular sieve in recovering the noble metal comprises the following steps: processing a waste electronic circuit board to obtain metal dissolving solution; regulating the pH of the metal dissolving solution to about 1, and selectively absorbing palladium ions and / or platinum ions in the metal dissolving solution by using the functionalized mesoporous molecular sieve; regulating the pH of the metal dissolving solution to about 2.5, and selectively absorbing aurum ions in the metal dissolving solution by using the functionalized mesoporous molecular sieve; and respectively washing the molecular sieve carried with palladium ions and / or molecular sieve carried with platinum ions and the molecular sieve carried with aurum ions, thereby enabling the noble metal to enter the solution through desorption and simultaneously reactivating the molecular sieve. The method for recovering the noble metal has the advantages of simple process and high noble metal absorption rate, and is environment-friendly.
Owner:ZHEJIANG LANBO METAL TECH +1
Method for preparing bamboo salt through temperature program
ActiveCN104621526AAchieve the purpose of enrichmentFully contactedFood preparationThree stageUniform - quality
The invention provides a method for preparing bamboo salt through temperature program, and relates to a preparation method of bamboo salt. The invention aims at providing a method for preparing bamboo salt by adopting a stage temperature program. The preparation method comprises the following steps: mixing raw materials; performing three-stage temperature rise calcining; cooling and crystalizing; and grinding. The method for preparing bamboo salt through temperature program, the loss of mineral substances is few, energy resources and raw materials can be saved, and the product bamboo salt has uniform quality and is high in quality. The method is used in the field of preparation of bamboo salt.
Owner:中盐国本盐业有限公司 +1
Technological method for removing base metals in rhodium/iridium secondary replacement residues
InactiveCN102086486AImprove leaching rateReduce dispersion lossProcess efficiency improvementRhodium MetallicumIridium
The invention discloses a technological method for removing base metals in rhodium / iridium secondary replacement residues. The technological process comprises the following steps: adding sulfuric acid into the rhodium / iridium secondary replacement residues with certain solid-to-liquid ratio; heating and introducing oxygen to leach the base metals such as copper, nickel and the like; and after reaction, filtering and washing the filter residues to neutral so as to obtain rhodium / iridium raw material containing relatively high-grade noble metals such as rhodium, iridium and the like as well as low content of base metals. The technology realizes effective separation of noble metals and base metals in the rhodium / iridium secondary replacement residues so that the leaching rate of the base metals in the secondary replacement residues is greater than 90% and the enrichment of rhodium, iridium and other noble metals is nearly 10 times, and provides a new method for leaching and separating the base metals to enrich the noble metals rhodium and iridium.
Owner:JINCHUAN GROUP LIMITED
Method of dual-aqueous phase system for purifying polygala root xanthonoid compound
InactiveCN102229594AImprove concentration and purityShorten the production cycleOrganic chemistryAmmonium sulfateChemistry
The invention relates to a method of a dual-aqueous phase system for purifying a polygala root xanthonoid compound. The method comprises the following steps: performing an ultrasonic sound of polygala root by using 60% to 90% of ethanol or performing a reflux extraction by heating, and then filtering and concentrating, performing a macroporous adsorption resin column on a concentrate, eluting with 50% to 65% of ethanol, concentrating an eluate and then adding ammonium sulfate and the ethanol dual-aqueous phase system according to a proportion, heating and uniformly mixing to divide into an upper phase and a bottom phase; cooling the bottom phase and crystallizing to recovery ammonium sulfate crystals, taking the upper phase containing ethanol out and adding ethyl acetate, water and sodium chloride, uniformly mixing and taking the upper phase containing polygala root xanthonoid compound, reducing pressure and concentrating, performing a vacuum drying to obtain the polygala xanthonoid compound. According to the invention, the polygala root xanthonoid compound can be separated by a macroporous resin and purified by using a dual-aqueous phase extraction technology, which has simple operation and provides technical foundation to industrialization of the polygala root xanthonoid compound.
Owner:NANJING ZELANG AGRI DEV
Peanut coat oligomeric proanthocyanidin, preparation method and application thereof
ActiveCN109207548AEfficient degradationImprove scavenging of DPPH free radicalsMicroorganism based processesFermentationMicroorganismNatural product
The invention discloses a peanut coat oligomeric proanthocyanidin, a preparation method and application thereof, belonging to the technical field of natural product preparation. The peanut coat oligomeric proanthocyanidin of the invention is obtained by microbial fermentation of the peanut coat, microwave assisted extraction and enrichment. The microorganism fermentation adopts one of Saccharomyces cerevisiae, Bacillus subtilis, Aspergillus niger and Aspergillus oryzae for complex microorganism fermentation. The mixed bacterial fermentation mode is adopted to degrade the proanthocyanidin of peanut coat, and the antioxidant activity of the obtained oligomeric proanthocyanidin is remarkably improved; The method for preparing oligomeric proanthocyanidins is easy to operate, saves time and high efficiency, and effectively improves the yield of oligomeric proanthocyanidins.
Owner:SHANDONG PEANUT RES INST
Method for measuring content of spermidine in safflower medicinal material and method for enriching spermidine
ActiveCN110794060AFacilitate desorptionAchieve the purpose of enrichmentComponent separationBiotechnologyMedicinal herbs
The application relates to the field of detection and analysis, and specifically relates to a method for measuring a content of spermidine in a safflower medicinal material and a method for enrichingspermidine. The method for measuring the content of the spermidine in the safflower medicinal material includes the following steps: using nylon 66 to adsorb the spermidine in a safflower medicinal material solution to obtain an enriched substance; dissolving the enriched substance by using a solvent and then performing filtering; and measuring the spermidine in a filtrate by using high performance liquid chromatography. The solvent includes a methanol aqueous solution having a volume fraction of 70% to 100% or an ethanol aqueous solution having a volume fraction of 70% to 100%. For the safflower medicinal material solution with a relatively low spermidine content (such as a safflower injection of about 0.15 [mu]g / mL), the nylon 66 has a function of enrichment and concentration, provides agood test condition for high performance liquid chromatography measurement, and provides a test method for a safflower-containing medicinal material with low concentration of spermidine.
Owner:YAAN THREE NINE PHARMA
Portable device for taking water from air
PendingCN113123406AReduce volumeEasy to carryMachines using electric/magnetic effectsDrinking water installationProcess engineeringSemiconductor chip
The invention provides a portable device for taking water from air. The portable device comprises a container shell, a refrigerating device, an adsorption bed, and a condensing part; the container shell is provided with a ventilation opening capable of being opened or closed; the refrigerating device is arranged in the container shell; the adsorption bed is connected with the upper end of the refrigerating device and is used for adsorbing moisture in the air; the condensing part is connected with the lower end of the refrigerating device. According to the technical scheme of the portable device, a cold end is cooled through semiconductor refrigeration, mechanical moving parts such as a compressor are not needed, and the characteristics of being small in size and convenient to carry are achieved; on one hand, the steam content in the portable device can be improved, and on the other hand, the semiconductor hot end temperature can be reduced when steam volatilizes, then the semiconductor cold end temperature is reduced; therefore, the working efficiency of a semiconductor chip is improved, and the water yield is improved.
Owner:INST OF DEFENSE ENG ACADEMY OF MILITARY SCI PLA CHINA
Enrichment method of microbes used for biologically removing high-concentration nitrogen-containing compounds
InactiveCN107338193AStable growthEfficient removalMicroorganism separationBiological water/sewage treatmentHigh concentrationEnrichment methods
The invention relates to the field of biological removal of nitrogen, and aims to provide a enrichment method of microbes used for biologically removing high-concentration nitrogen-containing compounds. The method comprises the steps that a variety of practical anaerobic sludge from wastewater treatment plants is mixed, stirred, filtered and centrifuged, and then an inoculating source is obtained; chemical reagents are added into the inoculating source for inoculation in a microbial fuel cell, and then the microbial fuel cell runs; finally, the microbes used for biologically removing high-concentration nitrogen-containing compounds are enriched in the fuel cell. According to the enrichment method, the microbial fuel cell serves as a carrier, the nitrating and denitrifying microbes can stably grow and largely proliferated in a specific culture environment in a bioelectrochemistry mode, and are be absorbed on a cell electrode to form a dense membrane structure, and then the effect that the high-concentration nitrogen-containing compounds can be efficiently removed is achieved. In the method, a variety of practical wastewater is introduced, the microbial population is enriched, and the stability of the system is improved; the environment beneficial to the growth and propagation of the nitrating and denitrifying microbes is built, a selective effect is achieved on the microbial population, and the enrichment aim is achieved.
Owner:ZHEJIANG UNIV
IDE and NEP fusion gene containing CBD (Collagen Binding Domain), cell line, liquid ECM (Extracellular Matrix) and application
ActiveCN110241128AAchieve the purpose of enrichmentAchieve enrichmentNervous disorderPeptide/protein ingredientsDiseaseCell-Extracellular Matrix
The invention discloses an IDE and NEP fusion gene containing a CBD (Collagen Binding Domain), a cell line, a liquid ECM (Extracellular Matrix) and an application. The IDE and NEP fusion gene containing the CBD (Collagen Binding Domain) comprises a CBD-IDE fusion gene and a CBD-NEP fusion gene, wherein the sequence of the CBD-IDE fusion gene is as shown in SEQID NO:1, and the sequence of the CBD-NEP fusion gene is as shown in SEQID NO:2. The cell line of the IDE and NEP fusion gene containing the CBD (Collagen Binding Domain) can stably express and secrete growth factors IDE and NEP and is combined to the extracellular matrix. The liquid ECM is synthesized by the cell line and is secreted outside cells. Through a gene technique, the IDE and NEP fusion gene carrying the CBD is constructed, then the expressed IDE protein and the expressed NEP protein are combined to collagen I of the ECM, the purpose of performing enriching on the ECM is achieved, and the purpose of treating Alzheimer 's Disease is realized.
Owner:SHANGHAI UNIV +1
High-water-absorption aerogel packaging material prepared from reed waste residues and preparation method thereof
ActiveCN111592680AWon't happenAchieve the purpose of enrichmentBio-packagingPaper material treatmentGlycineFreeze-drying
The invention discloses a high-water-absorption aerogel packaging material prepared from reed waste residues and a preparation method thereof. The method comprises the following steps: (1) crushing reed waste residues, soaking in a sodium hydroxide solution for 4-8 hours, filtering, and collecting and cleaning a solid-phase product; (2) putting the solid-phase product into a mixture of lactic acidand glycine betaine, uniformly stirring, filtering, and collecting a solid-phase product; (3) grinding the product obtained in the step (2), and heating at 60-75 DEG C for 2-5 hours; (4) stirring andmixing a starch-acrylic acid graft copolymer and phosphate, cooling to 60-75 DEG C, adding the product obtained in the step (3), and continuing stirring for 2-6 hours; and (5) carrying out freeze drying. The aerogel packaging material prepared by the invention has excellent degradation performance and water absorption performance, and is non-toxic, harmless, environment-friendly and safe.
Owner:QILU UNIV OF TECH
Cell matrix material containing gradient cell factor and preparation method and application thereof
ActiveCN110129274AAchieve the purpose of enrichmentMinimize immune responseAnimal cellsAntibody mimetics/scaffoldsVolumetric Mass DensityBiotin
The invention discloses a cell matrix material containing a gradient cell factor and a preparation method and application thereof. The preparation method comprises: constructing a recombinant vector of a coding gene containing a cell factor; integrating the recombinant vector to host cells to construct recombinant cells that may express the cell factor stably; subjecting the recombinant cells to medicated screening via biotin to obtain a stable transfection cell line; inoculating the stable transfection cell line to a substrate before culturing, and allowing distribution density of the recombinant cells cultured on the substrate to gradiently change in a specified direction; lyophilizing the recombinant cells attaching to the substrate to obtain the cell matrix material containing the gradient cell factor. The cell matrix material herein is capable of enriching SDF-1alpha, is originated from cells, and can minimize immunoreactions; the cell matrix material has SDF-1alpha factor gradient, so that the cell matrix material can simulate an in-vivo inflammatory micro-environment in vitro, and can also provide a support for cell attachment, so that stem cells can migrate to the inflammatory part.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Method for rapidly detecting food-borne salmonella based on PagN genes
PendingCN110894523AAvoid captureGuaranteed validityMicrobiological testing/measurementAgainst vector-borne diseasesBiotechnologySpecific detection
The invention discloses a method for rapidly detecting food-borne salmonella based on PagN genes. Polyclonal antibodies prepared by utilizing salmonella conservative virulence genes PagN and carboxylated magnetic beads are coupled to construct immunomagnetic beads, and the immunomagnetic beads are used with a fluorescent quantitative PCR detection method, so that the problems of complexity, time consumption and the like in a traditional culture method are avoided. The method is rapid and effectively and economical in cost, is real-time and visible, and can be used for implementing specific detection and detection of the salmonella in quantitative food.
Owner:TIANJIN UNIV
Vacuum dehumidification membrane based device and method for recovering liquid state water from air
InactiveCN101906800BAchieve the purpose of enrichmentContinuously workingDispersed particle separationVapor condensationRefrigeration compressorDifferential pressure
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
A temperature-responsive nuclear cross-linked star polymer with enrichment effect on glycoproteins and preparation method thereof
ActiveCN106519153BEliminate delivery difficultiesShorten the enrichment timePreparing sample for investigationPhenylboronic acidPolymer science
The invention discloses a temperature response type core cross-linked star polymer with a glycoprotein enriching effect and a preparation method thereof. According to the synthesized temperature response type core cross-linked star polymer with the glycoprotein enriching effect, an outer arm is prepared from a recognizing unit, i.e., phenylboronic acid, which plays a role in recognizing glycoproteins, and can be specifically bound to the glycoproteins, so as to complete a glycoprotein trapping process; the cross-linked core is prepared from a temperature response type polymer and can subject to a swelling 'dissolving'-precipitating change along with temperature changes, so as to complete a process of separating the glycoproteins from a mixed solution. The method has the advantages that the influence caused by interfacial mass transfer in an enriching process is eliminated, the capacity of enrichment is increased greatly, and the time for incubation is shortened; meanwhile, compared with the other methods, recognizing units are fixed by an arm precedence method, so that the operation is relatively simple, the fixed amount is high, and thus, the capacity of enrichment is further increased. In addition, the method can achieve the effective and rapid separation of the glycoproteins through simple centrifugation or filtration, so that the requirements on modern bioseparation are met.
Owner:郎溪品旭科技发展有限公司
A kind of peanut shell oligomeric proanthocyanidin, its preparation method and application
ActiveCN109207548BEfficient degradationImproves antioxidant activityMicroorganism based processesFermentationMicroorganismNatural product
The invention discloses a peanut coat oligomeric proanthocyanidin, a preparation method and application thereof, belonging to the technical field of natural product preparation. The peanut coat oligomeric proanthocyanidin of the invention is obtained by microbial fermentation of the peanut coat, microwave assisted extraction and enrichment. The microorganism fermentation adopts one of Saccharomyces cerevisiae, Bacillus subtilis, Aspergillus niger and Aspergillus oryzae for complex microorganism fermentation. The mixed bacterial fermentation mode is adopted to degrade the proanthocyanidin of peanut coat, and the antioxidant activity of the obtained oligomeric proanthocyanidin is remarkably improved; The method for preparing oligomeric proanthocyanidins is easy to operate, saves time and high efficiency, and effectively improves the yield of oligomeric proanthocyanidins.
Owner:SHANDONG PEANUT RES INST
A fusion gene containing cbd, cell line, liquid ECM and application
ActiveCN110241128BAchieve the purpose of enrichmentAchieve enrichmentNervous disorderPeptide/protein ingredientsDiseaseCollagen i
Owner:SHANGHAI UNIV +1
A method for extracting iodine from iodine-containing solution
The invention discloses a method for extracting iodine from an iodine-containing solution, which comprises adjusting the pH of the iodine-containing solution, adding an oxidant to the iodine-containing solution for oxidation for a certain period of time, adding an extractant to the oxidized solution, heating and stirring for a certain period of time, adding A stripping agent is added to the loaded organic phase for stripping. After stripping, the organic phase is washed with water. After stripping, the aqueous phase is acidified to precipitate crude iodine. The invention adopts an oxidation-extraction method, which has the advantages of high extraction rate, simple equipment and low energy consumption. The extraction rate of iodine reaches over 93%, and the extractant can be used repeatedly.
Owner:HARBIN INST OF TECH AT WEIHAI
A kind of separation and purification method of atractylodes monomer
ActiveCN106674160BImprove solubilityAchieve the purpose of enrichmentOrganic chemistryChemical recyclingPurification methodsBüchner funnel
The invention discloses a separation and purification method of atisine chloride atractydin monomers. The method includes: using an ethanol solution to perform heating extraction on rhizoma atractylodis for 2-3 times, combining filtrate and concentrating until no alcohol exists; B, extracting the concentrated solution with ethyl acetate for 2-4 times, and concentrating the ethyl acetate; C, adding silica gel into the ethyl acetate, and performing sample mixing and drying; D, loading the mixed sample into a mounted silica gel column for silica gel column chromatography, eluting with pure petroleum ether, and using a thin-layer chromatography point plate to confirm and collect production sections; E, concentrating the collected eluted production sections, freezing to separate out crystals, and using a Buchner funnel to fast filter the atisine chloride atractydin crystals while the crystals are cold, wherein HPLC detection shows that the purity of the crystals can reach above 99%, and the crystals can be used as the comparison products of content measuring. The separation and purification method has the advantages that the method is simple in process, short in production cycle, easy in cost control and suitable for industrial production, organic reagents can be recycled, and the obtained atisine chloride atractydin monomers are high in purity.
Owner:CHENGDU PUSH BIOLOGICAL TECH
Fluidized bed pyrolysis reaction furnace and reaction method for heating by molten salt
The invention discloses a fluidized bed pyrolysis furnace heated by molten salt. The fluidized bed pyrolysis furnace comprises a feeder, a fluidized bed pyrolysis furnace body, a cyclone separator, afirst-stage bio-oil condensation box and a second-stage bio-oil condensation box, which are sequentially connected. The feeder is composed of two stages of hoppers and a spiral feeder, which are arranged in the height direction of the pyrolysis furnace, and used for providing materials. The fluidized bed pyrolysis furnace is composed of a CO2 air inlet, a cracking furnace vertical hearth and a cracking furnace horizontal hearth, and a molten salt heat exchange guide pipe is arranged in the fluidized bed pyrolysis furnace and used for achieving material cracking. The cyclone separator is used for separating a solid-gas product to obtain the pyrolytic carbon. The two bio-oil condensation tanks are used for condensing bio-oil with different boiling points in a grading manner. Uncondensed gasis input into the CO2 air inlet, so that cyclic utilization is realized. Heat released by condensation of the bio-oil is used for drying raw materials, so that waste heat utilization is achieved. According to the fluidized bed pyrolysis furnace, efficient separation of products can be achieved. The fluidized bed pyrolysis furnace has the advantages of being simple in structure and convenient to operate.
Owner:HUAZHONG UNIV OF SCI & TECH
Intracellular microorganism enrichment method and reagent
ActiveCN112391291BAchieve the purpose of enrichmentTo achieve the purpose of post-enrichment detectionMicrobiological testing/measurementMicroorganism separationBiotechnologyPathogenic microorganism
The invention relates to a method and a reagent for enriching microorganisms in cells, and belongs to the technical field of microorganism gene detection. The enrichment method comprises the following steps: collecting cells: taking a sample to be tested, and collecting host cells therein; releasing microorganisms: treating the above-mentioned host cells with a cell treatment agent to rupture the host cell membrane and keep the host cell nuclear membrane intact, releasing the intracellular microorganisms ; Enrichment of microorganisms: removal of host cell residues in the sample, that is. The above-mentioned enrichment method uses a cell treatment agent to increase the permeability of the cell membrane of the cells contained in the sample, releases the microorganisms in the cells, and then removes the cell residues that do not contain the microorganisms, retains the part containing the microorganisms, and releases the microorganisms in the cells. At the same time as pathogenic microorganisms, host nucleic acid is removed to achieve the purpose of isolation and enrichment of intracellular pathogenic microorganisms.
Owner:广州微远医疗器械有限公司 +3
Separation and purification method of atisine chloride atractydin monomers
ActiveCN106674160AImprove solubilityAchieve the purpose of enrichmentOrganic chemistryChemical recyclingBüchner funnelPurification methods
The invention discloses a separation and purification method of atisine chloride atractydin monomers. The method includes: using an ethanol solution to perform heating extraction on rhizoma atractylodis for 2-3 times, combining filtrate and concentrating until no alcohol exists; B, extracting the concentrated solution with ethyl acetate for 2-4 times, and concentrating the ethyl acetate; C, adding silica gel into the ethyl acetate, and performing sample mixing and drying; D, loading the mixed sample into a mounted silica gel column for silica gel column chromatography, eluting with pure petroleum ether, and using a thin-layer chromatography point plate to confirm and collect production sections; E, concentrating the collected eluted production sections, freezing to separate out crystals, and using a Buchner funnel to fast filter the atisine chloride atractydin crystals while the crystals are cold, wherein HPLC detection shows that the purity of the crystals can reach above 99%, and the crystals can be used as the comparison products of content measuring. The separation and purification method has the advantages that the method is simple in process, short in production cycle, easy in cost control and suitable for industrial production, organic reagents can be recycled, and the obtained atisine chloride atractydin monomers are high in purity.
Owner:CHENGDU PUSH BIOLOGICAL TECH
Method and reagent for enriching intracellular microorganisms
ActiveCN112391291AAchieve the purpose of enrichmentTo achieve the purpose of post-enrichment detectionMicrobiological testing/measurementMicroorganism separationBiotechnologyPathogenic microorganism
The invention relates to a method and a reagent for enriching intracellular microorganisms, and belongs to the technical field of microorganism gene detection. The method for enriching intracellular microorganisms comprises the following steps: collecting cells, namely obtaining a to-be-detected sample, and collecting host cells from the to-be-detected sample; carrying out microorganism release, namely treating the collected host cells by using a cell treatment agent so as to have membrane of the host cells ruptured with nucleus membrane of the host cells kept intact, thereby allowing releaseof intracellular microorganisms; and then, enriching microorganisms, namely removing host cell residues in the sample so as to obtain the product. According to the method for enriching intracellular microorganisms, cell membrane permeability of the cells contained in the sample is increased by using the cell treatment agent so as to have the intracellular microorganisms released; and then, the cell residues without microorganisms are removed so as to have the part containing microorganisms reserved; and thus, intracellular pathogenic microorganisms are released with host nucleic acid removed.Therefore, the purposes of separating and enriching intracellular pathogenic microorganisms are achieved.
Owner:广州微远医疗器械有限公司 +3
A kind of superabsorbent airgel packaging material prepared by using reed waste residue and its preparation method
ActiveCN111592680BWon't happenAchieve the purpose of enrichmentBio-packagingPaper material treatmentFreeze-dryingPhosphate
The invention discloses a highly water-absorbing airgel packaging material prepared by using reed waste residue and a preparation method thereof. The method comprises the following steps: (1) crushing reed waste residue, soaking in sodium hydroxide solution for 4-8 hours, filtering, collecting and cleaning the solid phase product; (2) placing the solid phase product in lactic acid and betaine (3) Grind the product obtained in step (2), and then heat it at 60-75°C for 2-5 hours; (4) Stir the starch-acrylic acid graft copolymer and phosphate Mix, lower the temperature to 60-75°C, add the product obtained in step (3), and continue stirring for 2-6 hours; (5) freeze-dry. The airgel packaging material prepared by the invention has excellent degradation performance and water absorption performance, is non-toxic and harmless, and is environmentally friendly and safe.
Owner:QILU UNIV OF TECH
Processing method for jasmine white tea capable of enhancing immunity
InactiveCN109221513AHighlight substantive featuresSignificant progressPre-extraction tea treatmentTea flavoringTea leafSweet taste
The invention relates to the field of tea processing and specifically relates to a processing method for jasmine white tea capable of enhancing the immunity. The processing method comprises the stepssuch as fresh leaf selection, mulberry extracting solution extraction, withering, accumulation, rolling, jasmine picking and maintaining, scenting, baking, sorting and packaging. The prepared jasminewhite tea is enriched in jasmine fragrance and has the characteristics of bland and sweet tastes of white tea, the heavy perfume of jasmine and human immunity enhancement.
Owner:横县南方茶厂
Preparation method of floatable microalgae particles
PendingCN113637665AImprove light energy utilization efficiencyIncrease contact areaMicroorganism based processesOn/in organic carrierLight energyEngineering
The invention relates to a preparation method of floatable microalgae particles. The preparation method comprises the following steps: S1, mixing a microalgae cell suspension with a sodium alginate solution to prepare an initial mixed solution; and S2, dropwise adding the initial mixed solution into a calcium chloride solution to form hydrogel particles, continuously stirring, and carrying out a cross-linking curing reaction to obtain the floatable microalgae particles, wherein the density of the microalgae particles is regulated and controlled to be smaller than the density of a culture medium, so that the microalgae particles can float on the water surface. The microalgae particles can float on the water surface by adjusting the density of the microalgae particles, the prepared microalgae can grow and breed by fully utilizing illumination, carbon dioxide and nutrient substances such as carbon, nitrogen and phosphorus in water, and further biomass extraction is facilitated. Therefore, the energy consumption requirement of stirring or aeration can be reduced, full utilization of light energy is promoted, the defects caused by microalgae sedimentation are reduced, and meanwhile, a large amount of microalgae can be harvested conveniently.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Forced flow type quasi liquid membrane extraction separation and enrichment device and use method thereof
ActiveCN110115857AAchieve the purpose of enrichmentImprove stabilityLiquid solutions solvent extractionHigh concentrationThree-phase
The invention relates to a device for efficiently separating and enriching solute components in a raw material phase solution and a use method of the device. The device comprises an extraction device,a re-extraction device, an extraction phase storage tank and an extraction phase forced flowing system, wherein an extraction phase is forced by a pump to circulate and flow among the extraction device, the re-extraction device and the extraction phase storage tank, the solute components of a raw material phase are continuously transferred and enriched to form a re-extraction phase. The separation and enrichment device inherits the advantage of three-phase mass transfer in the traditional liquid membrane extraction process, the stability is more easily controlled, and the high-enrichment-ratio and high-selectivity separation requirement can be met. The separation and enrichment device and the use method thereof are suitable for efficiently separating and enriching low-concentration or high-concentration inorganic or organic solute components (such as ppb-grade Cd2+ and ppm-grade phenol) from the raw material phase. The three-phase mass transfer separation and enrichment technology which has the advantages of being simple in operation, high in stability, high in mass transfer rate, high in enrichment ratio and the like is provided.
Owner:HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
Lamellar extracellular matrix (ECM) material enriched with vascular endothelial growth factor a (VEGFa) as well as preparation method and application thereof
PendingCN111088279AAchieve the purpose of enrichmentGenetically modified cellsMammal material medical ingredientsCollagen iCell-Extracellular Matrix
The invention discloses a lamellar extracellular matrix (ECM) material enriched with a vascular endothelial growth factor a (VEGFa) as well as a preparation method and application thereof. The preparation method of the lamellar ECM material enriched with the VEGFa comprises the following steps: constructing a recombinant vector containing a collagenbinding domain-VEGFa (CBD-VEGFa) fusion gene; introducing the CBD-VEGFa fusion gene into host cells by using the recombinant vector so as to construct recombinant cells capable of expressing the VEGFa; inoculating a Petri dish with the recombinant cells so as to carry out cultivation; and then, freeze-drying the recombinant cells attached on the Petri dish so as to obtain the lamellar ECM material enriched with the VEGFa. According to the preparation method of the lamellar ECM material enriched with the VEGFa, VEGFa carrying the CBD is constructed; and then, the VEGFa protein is bound to collagen I of ECM so as to achieve the purpose of enriching the VEGFa protein on the ECM. The lamellar ECM material enriched with the VEGFa prepared by the preparation method can induce mesenchymal stem cells to differentiate into endothelial cells.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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