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93 results about "Acetic acid concentration" patented technology
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As the molar concentration of acetic acid in a solution decreases, the pH increases, which indicates that it is a weaker acetic acid than those that have higher molar concentrations. Acetic acid is a chemical compound that has the formula C2H4O2. Its molecular weight is 60.05 grams per mole.
Methods for increasing the production of ethanol from microbial fermentation
InactiveUS7285402B2Good culture stabilityPermit growthBioreactor/fermenter combinationsSolid waste disposalBioreactorNutrient
A stable continuous method for producing ethanol from the anaerobic bacterial fermentation of a gaseous substrate containing at least one reducing gas involves culturing a fermentation bioreactor anaerobic, acetogenic bacteria in a liquid nutrient medium; supplying the gaseous substrate to the bioreactor; and manipulating the bacteria in the bioreactor by reducing the redox potential, or increasing the NAD(P)H TO NAD(P) ratio, in the fermentation broth after the bacteria achieves a steady state and stable cell concentration in the bioreactor. The free acetic acid concentration in the bioreactor is maintained at less than 5 g / L free acid. This method allows ethanol to be produced in the fermentation broth in the bioreactor at a productivity greater than 10 g / L per day. Both ethanol and acetate are produced in a ratio of ethanol to acetate ranging from 1:1 to 20:1.
Owner:JUPENG BIO HK LTD
Process for producing acetic acid
ActiveUS20130281735A1Efficient removalImprove corrosion resistanceOrganic compound preparationOrganic chemistry methodsDistillationMethyl acetate
Acetic acid is produced while inhibiting increased concentrations of hydrogen iodide and acetic acid in an acetaldehyde distillation column.A production process of acetic acid comprises a step for allowing methanol to react with carbon monoxide; a step for feeding a flasher with the reaction mixture to separate a volatile component (2A) and a low-volatile component (2B); a step for feeding a distillation column with the volatile component (2A), and separating an overhead (3A) containing methyl iodide, acetic acid, methyl acetate, water, acetaldehyde, and hydrogen iodide, and a stream (3B) containing acetic acid to collect acetic acid; and a separation step for feeding an acetaldehyde distillation column with at least part of the overhead (3A) and separating a liquid object to be treated containing the overhead (3A) into a lower boiling point component (4A) containing acetaldehyde and a higher boiling point component (4B); wherein, in the separation step, the liquid object contains methanol and / or dimethyl ether in a concentration of 0.1 to 50% by weight is subjected to distillation.
Owner:DAICEL CHEM IND LTD
Method for sustaining Microorganism culture in Syngas fermentation process in decreased concentration or absence of various substrates
ActiveUS20100227377A1Preventing rapid lossDecreased absenceBacteriaUnicellular algaeMicroorganismAlcohol
The present invention relates to methods for sustaining microorganism culture in a syngas fermentation reactor in decreased concentration or absence of various substrates comprising: adding carbon dioxide and optionally alcohol; maintaining free acetic acid concentrations; and performing the above mentioned steps within specified time.
Owner:JUPENG BIO HK LTD
Polyacrylic acid (SALT) water-absorbing resin and manufacturing method therefor
ActiveUS20150011388A1Low costGood physical propertiesOther chemical processesAbsorbent padsPolymer scienceALLYL SUCROSE
The present invention provides a method for manufacturing a water-absorbing resin which (i) is made of acrylic acid that is suitable for mass production of water-absorbing resin and (ii) has an excellent water-absorbing property. In the method, a polyacrylic acid (salt)-based water-absorbing resin is manufactured by sequentially carrying out predetermined monomer preparing step, polymerization step, drying step, and surface crosslinking step. An acetic acid concentration in acrylic acid or the like supplied in the monomer preparing step is in a range of 300 ppm to 10000 ppm on the acrylic acid basis, and an acetic acid concentration lowering rate defined by a predetermined formula is 35% or higher.
Owner:NIPPON SHOKUBAI CO LTD
Device for blending etching solution and device for determinating concetration of etching solution
InactiveCN101567309AReal-time continuous determination of nitric acid concentrationGood and constant accuracySemiconductor/solid-state device testing/measurementSemiconductor/solid-state device manufacturingPhosphoric acidDisplay device
The present invention provides a etching solution blending device which is used in a semiconductor manufacturing works or flat-panel display manufacturing works and is capable of constantly blending nitric acid concentration, moisture concentration, phosphoric acid concentration and acetic acid concentration of the etching solution. The device comprises: an electric conductivity meter for detecting the electric conductivity of the dilution formed by adding pure water into etching solution in a blending tank or an absorption spectrophotometer for detecting the nitric acid concentration of the etching solution, an absorption spectrophotometer for detecting the moisture concentration of the etching solution, an absorption spectrophotometer or a densitometer for detecting the phosphoric acid concentration of the nitric acid, a component concentration operation mechanism for operating the component concentration of the etching solution by multi-component operation method according to the electric conductivity value of the nitric acid concentration conductivity meter, the absorbency value of the moisture concentration absorption spectrophotometer, and the absorbency value of the phosphoric acid concentration absorption spectrophotometer or the density value of the densitometer, and a replenishing mechanism for replenishing at least one of acid original solution, mixed acid original solution and pure water into the blending tank.
Owner:HIRAMA LAB
Methods for increasing the production of ethanol from microbial fermentation
InactiveUS20080213848A1Permit growthImprove stabilityBioreactor/fermenter combinationsGas production bioreactorsBioreactorSteady state
Owner:INEOS BIO SA
Method for processing solvent and byproducts in aromatic carboxylic acid production
ActiveCN101792386AReduce unit consumptionHigh economic valuePreparation from carboxylic acid esters/lactonesBulk chemical productionWater useCatalytic distillation
The invention relates to a method for processing a solvent and byproducts in aromatic carboxylic acid production. The processed raw materials comprise a solvent, namely acetic acid and byproducts, namely methylacetate and water in the aromatic carboxylic acid production; and an extraction column, an azeotropic distillation column, a solvent recovery column, a catalytic distillation column and a four-element component separating column are involved in the whole process flow. In the method, the methylacetate of little value can be hydrolyzed into the acetic acid and methanol, so the single consumption of the acetic acid can be reduced in a PTA production process and the economic value of the device is improved; the water used in the methylacetate hydrolysis is taken from the waste water generated from acetic acid concentration, so water resource is effectively utilized, treatment capacity of the waste water is reduced, and the production cost is lowered; and besides, the using amount ofthe entrainer is reduced and the consumption is correspondingly reduced, so the method has the characteristics of high efficiency, energy conservation and the like.
Owner:NANJING UNIV OF TECH
Method for producing ethanol using recombinant yeast
The invention is intended to metabolize acetic acid and to lower acetic acid concentration in a medium at the time of xylose assimilation and ethanol fermentation by a yeast strain having xylose-metabolizing ability. The method for producing ethanol comprises a step of culturing recombinant yeast strains resulting from introduction of a xylose isomerase gene and an acetaldehyde dehydrogenase gene into a medium containing xylose, so as to perform ethanol fermentation.
Owner:TOYOTA JIDOSHA KK
Polyacrylic acid (SALT) water-absorbing resin and manufacturing method therefor
Provided is a method for manufacturing a water-absorbing resin that has excellent water-absorption performance and is made from an acrylic acid that is suitable for large-scale production of said water-absorbing resin. Said method for manufacturing a polyacrylic acid (salt) water-absorbing resin includes a prescribed monomer-preparation step, polymerization step, drying step, and surface-crosslinking step, in that order. The acetic-acid concentration of the acrylic acid and the like supplied to the monomer-preparation step is 300 to 10,000 ppm (with respect to the acrylic acid), and an acetic-acid-concentration decrease percentage defined by a given formula is at least 35%.
Owner:NIPPON SHOKUBAI CO LTD
Preparation method and application of ecological finishing agent used for cellulose and protein fiber fabrics
InactiveCN103603195AImprove stabilityInhibition of agglomerationVegetal fibresAnimal fibresCelluloseNatural fiber
The invention relates to a preparation method and application of a deacetylated chitosan ecological finishing agent used for finishing natural fibers and regenerated natural fiber fabrics. The invention aims to solve the technical problems of a crosslinking problem, size and uniformity of chitosan acetic acid sol particles and stability of the finishing agent. The method is technically characterized by comprising the following steps: mixing chitosan and lacial acetic acid to form an acetic acid aqueous solution with the acetic acid concentration of 1.5-3 percent, dripping a 10g / L of ion stabilizer agar solution, regulating the size of the chitosan colloid particles to be in a distribution range of 60-100nm, forming a uniform and stable acetic acid-chitosan colloid solution of which the colloid size is in a nanoscale, controlling the pH value to be 4-7, wherein the viscosity of the colloid solution is 2-60mPa.s. The method has good chitosan fixation effect, does not have harmful or chemical residues and is environment-friendly, high-efficiency, harmless to human bodies and rich in raw material source.
Owner:安徽甲特生物科技有限公司
L-tryptophane fermentation process
InactiveCN106086101APlay the role of filter aidIncrease filtration rateFermentationFiltrationDialysis
The invention provides an L-tryptophane fermentation process. The fermentation process comprises the following steps: adding 2g cottonseed cake powder to every 1 liter of an L-tryptophane fermentation medium to carry out fermentation; carrying out circulating filtration in the fermentation course when the yield of acetic acid is more than 5g / L and allowing clear fermentation liquid obtained after separation to enter into an extraction procedure; allowing concentrated bacteria liquid obtained after extraction to enter a fermentation tank, then replenishing a dialysis medium and then carrying out fermentation further, thus obtaining L-tryptophane. By adopting the fermentation process, the L-tryptophane production cycle is lengthened by 20 hours, the acetic acid concentration is maintained below 5g / L, the single tank yield is increased by 89% or above, and the conversion rate is increased from 17.0% to more than 18.5%; as the cottonseed cake powder is added to the fermentation medium and the cottonseed cake powder which is not utilized by thalli plays a role of a filter aid during filtration, the fermentation liquid filtering rate is increased from 85mL / min to 183mL / min.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Zymomonas mobilis resistant to high-concentration acetic acid and high-concentration furfural and application thereof
The invention provides zymomonas mobilis resistant to high-concentration acetic acid and high-concentration furfural and application thereof. The accession number of the zymomonas mobilis is CMGCC No.10946. The zymomonas mobilis can quick grow in a culture solution containing 7.0 g / L of acetic acid and 3.0 g / L of furfural, and alcoholic fermentation can be performed quickly. Therefore, the zymomonas mobilis can directly perform fermentation on cellulose enzymatic hydrolysates on the conditions of high-concentration acetic acid and high-concentration furfural, and fuel alcohol is obtained through preparation.
Owner:BIOGAS SCI RES INST MIN OF AGRI
Lactobacillus acetotolerans and application thereof
ActiveCN110184227AEnhanced inhibitory effectIncrease lactic acid contentBacteriaMicroorganism based processesFood flavorMicrobiological culture
The invention discloses lactobacillus acetotolerans. The lactobacillus acetotolerans is preserved in the China General Microbiological Culture Collection Center, the preservation date is 13 December 2018, and the preservation number is CGMCC NO.16938. The invention further discloses an application of the strain. The lactobacillus acetotolerans disclosed by the invention is high in tolerance to acetic acid, can convert carbohydrate substances into the lactic acid in high acetic acid environment of which the acetic acid concentration is 7.0g / 100mL, and can produce fragrance substances of ethyl lactate and the like. After the strain is used in brewed liquid vinegar of which the total acid is 6.0-7.0g / 100mL, the acid content can be increased to 0.76-0.91 / L, the ethyl lactate content can be increased by 10 times or above and reach 13.69-15.26mg / L, the irritant of products is reduced, the softness is increased, the content of fragrance substances is increased, the flavor quality of the products is greatly improved, the application is convenient, and economic benefits of enterprises are significantly increased.
Owner:JIANGSU HENGSHUN VINEGAR IND +1
ph controlling technology for converting municipal sludge into acetic acid
The invention provides a pH controlling technology for converting municipal sludge into acetic acid, belonging to the field of the recovery of waste. The technology performs different pH control modes to two phases in a coupling system of generating hydrogen and generating acid / consuming hydrogen and generating acetic acid. Before 12 days of fermenting generating hydrogen and generating acid phase (A phase), the pH is not controlled, and from 13 days, the pH is remained at 9-10; the pH is remained at 6.5 when fermenting consuming hydrogen and generating acetic acid (H phase); and the fermentation is stopped after 18 days. The concentration of A phase acetic acid is 7.53g / L, the concentration of H phase acetic acid is 1.45g / L, and the index of A phase SCOD is reduced by 56.7%. The technology solves the problem of the environment pollution caused by the municipal sludge, obtains the acetic acid with high additional value, discharges the polluted water which is easily processed (SCOD index is low), and has the advantages of convenient operation, low cost and obvious effect, etc.
Owner:JIANGNAN UNIV
Method for sustaining microorganism culture in syngas fermentation process in decreased concentration or absence of various substrates
ActiveUS9034618B2Preventing rapid lossDecreased absenceBacteriaUnicellular algaeMicroorganismAlcohol
Owner:JUPENG BIO HK LTD
Zymomonas mobilis mutant strains tolerant to high-concentration acetic acid and applications thereof
ActiveCN107893043APromote growthEfficient productionBacteriaMutant preparationHigh concentrationInduced mutation
Zymomonas mobilis mutant strains tolerant to high-concentration acetic acid and applications thereof are disclosed. The taxonomic name of one of the strains is zymomonas mobilis AQ8-1, and the accession number of the zymomonas mobilis AQ8-1 is GDMCC60258. The taxonomic name of the other strain is zymomonas mobilis AQ8-9, and the accession number of the zymomonas mobilis AQ8-9 is GDMCC60259. Mutation screening includes 1) performing room-temperature plasma induced mutation; 2) performing renewing culture by utilizing a medium; and 3) repeatedly screening under a high acetic acid concentration to obtain the strains. The strains can rapidly grow in a culture liquid containing 5.0-8.0 g / L of acetic acid, and can perform alcoholic fermentation. The invention also provides an alcoholic fermentation method.
Owner:BIOGAS SCI RES INST MIN OF AGRI
Preparation method of chitosan monomolecular layer film
The invention relates to a preparation method of a chitosan monomolecular layer film and belongs to the field of biological film preparation. The preparation method of the biological film comprises the following steps of: dissolving chitosan having deacetylation degree of 92% and molecular weight of 114200 daltons into 2% diluted acetic acid so as to prepare a 0.03g / L chitosan solution; carrying out acid catalysis reaction for 24 days at room temperature, then sucking 20 mu L of chitosan solution and dropwise adding the 20 mu L of chitosan solution on a mica plate the area of which is 1cm <2> so that a film is formed after the chitosan solution is freely volatilized; and scanning with an atomic force microscope to obtain feedback information to regulate soaking time, acetic acid concentration and sucked solution dosage to control film quality and coverage area so as to finally prepare the compact and uniform monomolecular layer chitosan film. By using the biological film preparation method, the super-thin monomolecular layer chitosan film can be prepared, and the uniformity of the biological film is ensured. The technical scheme of the invention is suitable for preparation of the biological film.
Owner:HENAN UNIVERSITY
Production of copper acetate
Production of cupric acetate is carried out by filling tower body with copper fillings, pouring cupric acetate mother liquid into tower base, circulation spraying for mother liquid by circulation pump, entering oxygen into junction of tower body and tower kettle, injecting running mother liquid into crystallizer, crystallizing, delivering the product into crystallizing filter, crystallizing, mother liquid separating, putting the separated acetate crystallization into drier, drying, putting the separated mother liquid into store tank, storing, adding into glacial acetic acid by additive metering vessel, adjusting radical acetic acid concentration in mother liquid, verifying and packing. It is high efficient and non-toxic. It can be used for insecticide, ceramic blended oil, catalyst and bactericide in green pesticide.
Owner:MINXIN FINE CHEM PLANT SUZHOU
Cleaning agent for filter cloth for copper concentrate filtering
ActiveCN103589526AEasy to cleanAvoid frequent replacementNon-ionic surface-active compoundsHydrofluoric acidFiber
The invention relates to a cleaning agent for filter cloth for copper concentrate filtering. Residue matters and plugging particles of the surface of the filter cloth are analyzed, so that two kinds of inorganic acids, namely acetic acid and hydrofluoric acid which have a mutually-promoting role on a cleaning effect are determined at first. Then, in order that reaction of acids and silk threads or particle matters in fibers of the filter cloth is more complete, a nonionic penetrating agent JFC-E (a kind of fatty alcohol-polyoxyethylene ether) is added in acids, and therefore the aqueous cleaning agent with a significant cleaning effect is prepared. The acetic acid concentration of the cleaning agent is 9-15 percent, the hydrofluoric acid concentration is 0.5-1.5 percent, and the JFC-E concentration is 0.1-0.3 percent. As the two kinds of inorganic acids with the mutually-promoting role are adopted to react with the residue matters of the surface of the filter cloth, particles on the surface of the filter cloth can be effectively removed. Meanwhile, as the nonionic penetrating agent JFC-E is added, the cleaning agent can penetrate among the silk threads or fibers of the filter cloth to react with the plugging particles, the cleaning effect is greatly increased, and the production cost is reduced.
Owner:TIANJIN UNIV
Method for brewing vinegar through freezing and purifying
InactiveCN105316210ARealize pure green productionIncrease concentrationVinegar preparationLiquid stateFood processing
The invention relates to a method for brewing vinegar through freezing and purifying and belongs to the technical field of food processing. The invention aims at solving the technical problem of providing a method for brewing vinegar through freezing and purifying with simple operation, high acetic acid concentration and no chemical substance added in the whole process. According to the adopted technical scheme, the method for brewing vinegar through freezing and purifying comprises the following steps: selecting raw materials, cleaning, cooking, adding yeast for making hard liquor, capping, carrying out liquid state alcoholic fermentation, carrying out acetic fermentation, pouring boiled water into a solid fermentative substrate of vinegar, discharging poured vinegar liquid, freezing the poured vinegar liquid, unfreezing, and repeating the freezing-unfreezing process on the rest of the poured vinegar liquid for more than 4 times, so that the finished product vinegar is obtained.
Owner:山西吕梁市兴县古德传统手工醋业有限公司
Gene associated with foam formation of acetic acid bacterium, acetic acid bacterium bred by modifying the gene and method for producing vinegar using the acetic acid bacterium
ActiveUS20100105117A1Suppressing foam formationLessens protein functionSugar derivativesBacteriaHigh concentrationBiology
The object of the present invention is to provide a method for suppressing foam formation by identifying a gene involved in foam formation during culture of an acetic acid bacterium and reducing or deleting the function of a protein encoded by the gene, a method for more efficiently producing vinegar that contains a high concentration of acetic acid by using an acetic acid bacterium in which foam formation has been suppressed by the above method, and vinegar produced by the above production method. An acetic acid bacterium with suppressed foam formation was obtained by isolating a gene encoding a protein involved in foam formation during culture of an acetic acid bacterium, then by altering the gene by a modification to reduce or delete the function of a protein involved in foam formation. Further provided is a method for efficiently producing vinegar with higher concentration of acetic acid with the use of the acetic acid bacterium.
Owner:MIZKAN HLDG +1
Threonine fermentation medium and clean production process of threonine
ActiveCN107012181ALow ashImproved color and qualityMicroorganism based processesFermentationChemistryDefoaming Agents
The invention provides a threonine fermentation medium and a clean production process of threonine; the threonine fermentation medium is free of corn steep liquor and yeast powder; substitution is achieved by adding various amino acids, nucleotide and trace elements; the threonine fermentation medium is used to ferment threonine clear liquor, sugar-acid conversion rate and extracting yield are increased, and threonine can be cleanly produced with very excellent effect; after 26 hours of fermentation, the yield of threonine reaches 128.6 g / L, froth is lessened during fermentation, the usage of Pao Di (a defoaming agent) is reduced, stirring output power is increased, the concentration of acetic acid in fermentation broth is decreased from 12 g / L to 3 g / L, pigments and ash content in the medium are decreased, concentration times of the fermentation broth during concentrative crystallization is increased, the volume of crystal mother liquor is decreased from 8% of the original process to 3%, the yield is increased from 82% to 94%, sugar-acid conversion rate is increased from 56% to 59%, the product purity is greater than 99.2%, and the product color and quality are improved greatly.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Acetic acid and water separation method in aromatic carboxylic acid production
ActiveCN105272845AImprove separation efficiencySave energyCarboxylic compound separation/purificationEthylic acidCarboxylic acid
The present invention relates to an acetic acid and water separation method in aromatic carboxylic acid production. According to the method, during an aromatic carboxylic acid production process, a material containing acetic acid and water is introduced into a pervaporation membrane separator, the high water content material is concentrated by using a membrane separation method to form an high acetic acid concentration material, the high acetic acid concentration material enters an azeotropic rectification tower, and separation is performed, such that the amount of the water entering the azeotropic rectification tower is reduced, and the energy for the azeotropic rectification is reduced. According to the present invention, the acetic acid accepted by the system and the water can be obtained; and compared with the original azeotropic rectification method, the method of the present invention has the following characteristics that the energy required by the reboiler and the condenser achieving the separation target is reduced, and the energy is further saved by 15-30% on the basis of the azeotropic rectification.
Owner:SINOPEC YANGZI PETROCHEM +1
Compression heat pump rectification method and system for acetic acid concentration
PendingCN110538479AIncrease pressureIncrease temperatureChemical industryCarboxylic compound separation/purificationAcetic acid solutionTower
The invention discloses a compression heat pump rectification method for acetic acid concentration. The method comprises the following steps: an acetic acid solution is fed from the middle of a rectification tower, and the rectification tower performs rectification and concentration of the acetic acid solution; a part of a tower kettle liquid, as a tower bottom product, of the rectification toweris discharged from the rectification tower, and the other part of the tower kettle liquid enters a tower bottom re-boiler from the rectification tower; a tower top gas of the rectification tower enters a compressor, a steam compressed and heated by the compressor directly enters the tower bottom re-boiler, the tower kettle liquid entering the re-boiler is heated, the steam is condensed, and the heated tower kettle liquid is returned to the tower kettle; and a condensed liquid after condensation of the steam enters a backflow tank, a part of the condensed liquid, as a tower top product, is discharged from the backflow tank, and the other part of the condensed liquid, as a backflow liquid, is returned to the tower top of the rectification tower from the backflow tank. The invention also discloses a compression heat pump rectification system for acetic acid concentration. After adopting the above technical solution, the purpose of saving energy consumption at a relatively low cost is achieved.
Owner:SHANGHAI QIYAO EXPANDER
Milk protein detection method
InactiveCN104729947AImprove detection efficiencyReduce usageMaterial weighingLinear correlationCentrifugation
The invention belongs to the field of animal product detection and particularly relates to a milk protein detection method. A contract value (precipitation quality to milk volume) method is established to detect milk protein content, and the detection method for finding the milk protein content includes factors of milk standby time, centrifugation time, centrifugal rotational speed, ice acetic acid concentration and the like, and optimum parameters for precipitation of the milk protein are acquired, in other words, the standby time for the milk protein is 9 minutes, the centrifugation time is 7 minutes, the centrifugal rotational speed is 12000r / min, and the ice acetic acid concentration is 0.3mol / L; related data of the milk protein content and the contract value are subjected to partial lease squares analysis to acquire a regression linear equation of the milk protein content X to the contract value Y, namely the Y=0.0645X+0.0581, R2=9896, and higher linear correlation exists between the milk protein content X and the contract value Y within the scope ranging from 2.0g / 100mL to 4.0g / 100mL range.
Owner:TARIM UNIV
Zymomonas mobilis with resistance to acetic acid of high concentration and application thereof
The invention provides zymomonas mobilis with resistance to acetic acid of high concentration , the preservation number of the zymomonas mobilis is CGMCC No. 10945. The zymomonas mobilis provided by the invention can grow rapidly in a culture solution containing more than 8.0g / L of acetic acid, and the alcohol fermentation can be performed rapidly, so that the zymomonas mobilis can perform fermentation on cellulose enzymolysis products directly under higher acetic acid concentration condition to obtain fuel ethanol through preparation.
Owner:BIOGAS SCI RES INST MIN OF AGRI
Preparation method of Chishui vinegar
InactiveCN109401909AReasonable degree of fermentationSmall difference in concentrationVinegar preparationAlcoholMildew
The invention discloses a preparation method of Chishui vinegar. The preparation method includes washing rice and glutinous rice, boiling up the rice, adding the glutinous rice, boiling the two untilno rice core exists to obtain rice porridge, cooling the rice porridge in a special clay fermentation tank, adding vinegar koji for alcohol fermentation, and after fermentation, adding bran for blending; carrying out fermentation according to strict regulations after blending, manually putting a fermented mature vinegar culture into a special clay drying tank for sealed cultivation, and putting the special clay drying tank in a drying ground for esterification reaction; exchanging the vertical position of the vinegar culture in the tank through manual turning, fully filling the tank with the vinegar culture and stamping the vinegar culture to avoid gaps, and covering the mouth of the tank in an all-around way by salt to isolate the vinegar culture from air and mosquitoes to further achievefreshness keeping, sterilization and mildew resistance; soaking the mature vinegar culture and high-quality spring water proportionally, pouring vinegar according to a three-cycle method, drying vinegar liquid, and performing concentrated ageing. By the preparation method, the Chishui vinegar with a reasonable fermentation degree, small acetic acid concentration differences and stable product quality is obtained.
Owner:贵州赤水古法酱香晒醋有限责任公司
Gene improving temperature-tolerance of acetic acid bacterium, acetic acid bacterium bred using the gene and process for producing vinegar using the acetic acid bacterium
InactiveUS7256025B2Improve temperature resistanceEfficient accumulationSugar derivativesBacteriaMicroorganismBacteroides
The present invention is intended to provide a novel gene originating in an acetic acid bacterium, which participates in temperature tolerance; a method of improving the temperature tolerance of a microorganism, in particular, an acetic acid bacterium using the above gene; and a method of efficiently producing vinegar having a higher acetic acid concentration with the use of an acetic acid bacterium whose temperature tolerance has been improved.
Owner:MITSUKAN GROUP CORP +1
Process for Monitoring Separation of Ethanol Mixture
InactiveUS20130172631A1Organic compound preparationOxygen compounds preparation by reductionImpurityChemistry
A process is disclosed for monitoring separation streams of an ethanol purification process, including measuring the concentrations of impurities, monitoring one or more binary streams, or monitoring conductivity in an ethanol containing stream to determine acetic acid concentrations. The ethanol is produced by hydrogenating acetic acid. One or more on-line analyzers may be used to monitor the separation streams.
Owner:CELANESE INT CORP
Prediction system for predicting occurrence of calcium oxalate kidney stone
ActiveCN112053784AAccurate predictionPrediction is accurateMedical simulationKernel methodsOXALIC ACID DIHYDRATEKidney stone
Owner:WEST CHINA HOSPITAL SICHUAN UNIV
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