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59 results about "Diammonium hydrogen citrate" patented technology
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Method for carrying out electronickelling on neodymium-iron-boron magnet
The invention discloses a method for carrying out electronickelling on a neodymium-iron-boron magnet. The method particularly comprises the following steps of: carrying out a pretreatment process, a nickel preplating process, a water washing process, a semi-bright nickel plating process, the washing process, a bright nickel plating process and a water washing process on the neodymium-iron-boron magnet, wherein a first electronickelling solution which comprises nickel sulfate, boric acid, sodium succinate, sodium carboxyethyl sulfonate and water is adopted for the nickel preplating process; a second electronickelling solution which comprises nickel sulfate, diammonium hydrogen citrate, the boric acid, ammonia water and water is adopted for the semi-bright nickel plating process; the first electronickelling solution is free of chloride ions, and the first electronickelling solution contains the sodium succinate and the sodium carboxyethyl sulfonate; the second electronickelling solution contains a proper amount of diammonium hydrogen citrate. The method disclosed by the invention can ensure that the neodymium-iron-boron magnet has better magnetic property by reducing the influence of an electroplating process on the magnetic property of the neodymium-iron-boron magnet and achieves uniform distribution of coating thickness when a product with a smaller end part angle is electroplated.
Owner:NINGBO YUNSHENG +4
Method for promoting growth of probiotics by adding rutin in culture medium
ActiveCN105018408APromote growthHigh activityBacteriaMicroorganism based processesBiotechnologySodium acetate
The invention provides a method for promoting growth of probiotics by adding rutin in a culture medium. According to the method, a probiotics strain (lactobacillus rhamnosus) is inoculated into a rutin-added improved MRS lactic acid bacteria culture medium for fermentation, wherein the improved MRS lactic acid bacteria culture medium includes the following components in percentage by weight: 2% of glucose, 2% of peptone, 1% of a beef extract, 0.5% of a yeast extract, 0.5% of sodium acetate, 0.2% of dipotassium phosphate, 0.2% of diammonium hydrogen citrate, 0.025% of magnesium sulfate, 0.005% of manganese sulfate, 0.3% of tween-80, and the pH is 7.0; 1g-5g of rutin (with the impurity of 99%) is added into each liter of the fermentation culture medium. According to the method, the fermentation speed of probiotics in fermentation liquid and the viable count of probiotics can be remarkably increased; after carrying out fermentation growth on probiotics for 24 hours, the maximal viable count of obtained probiotics fermentation liquid can reach about 10<9>CFU / mL; added rutin has the effects of decreasing capillary fragility, improving microcirculation, resisting radiation and free radicals and the like, and the functional effect of a cultured product can be substantially improved.
Owner:吉林省浦生泰生物技术有限责任公司
Primrose soilless culture nutrient solution and preparation method thereof
InactiveCN104973976ANutritional balanceMeet growth needsFertilizer mixturesDiseaseCalcium nitrate tetrahydrate
The invention discloses a primrose soilless culture nutrient solution and a preparation method thereof; the nutrient solution is prepared from the following raw materials in parts by weight: 50-60 parts of potassium nitrate, 30-40 parts of calcium hypophosphite, 20-30 parts of calcium nitrate tetrahydrate, 30-40 parts of diammonium hydrogen citrate, 35-45 parts of magnesium sulfate, 20-40 parts of potassium dihydrogen phosphate, 10-14 parts of ethylenediaminetetraacetic acid monosodium ferric salt, 14-16 parts of ferric pyrophosphate, 8-10 parts of ferrous sulfate, 7-9 parts of sodium tetraborate, 8-10 parts of boracic acid, 6-10 parts of zinc sulfate, 3-8 parts of potassium humate, 3-5 parts of manganese sulfate, 10-15 parts of urea, 15-20 parts of copper gluconate, 2-4 parts of sodium naphthalene acetate, 3-5 parts of gamma-polyglutamic acid, and a proper amount of water. The nutrient solution has balanced nutrition, can meet the growing demand of primrose, can make the primrose leaves invisible green, flower color bright and flower period durable after use, moreover, can improve the immunity of the primrose, and reduces the occurrence of pests and diseases.
Owner:CHANGZHOU CHENGTIAN ELECTRONICS
Composition for measuring glucose having improved substrate specificity
InactiveCN1912132AHigh precisionMicrobiological testing/measurementN-Butyric acid2-ketoglutaric acid
The present invention relates to a method for lowering activity with respect to maltose in glucose measurement comprising a step of reacting modified pyrroloquinoline quinone dependent glucose dehydrogenase subjected to amino acid sequence modification, wherein pyrroloquinoline quinone dependent glucose dehydrogenase is reacted in the presence of at least one type of substance selected from the group comprising succinic acid, malonic acid, glutaric acid, malic acid, phthalic acid, 2-ketoglutaric acid, 3,3-dimethylglutaric acid, pimeric acid, suberic acid, adipic acid, maleic acid, potassium chloride, ammonium chloride, diammonium hydrogen citrate, L-lysine, taurine, calcium glycerate, amino-n-butyric acid, sodium glycolate, sodium alpha-ketoglutarate, fumaric acid, glycine, glutamic acid, serine and citric acid.
Owner:TOYO TOYOBO CO LTD
Chemico-mechanical polishing cleaning fluid for semiconductor silicon wafers
InactiveCN105505230AReduce surface tensionPollution suppressionPolishing compositions with abrasivesMetal impuritiesCleansing Agents
The invention discloses chemico-mechanical polishing cleaning fluid for semiconductor silicon wafers. The chemico-mechanical polishing cleaning fluid is prepared from, by weight, 5-20 parts of organic acid, 0.2-1 part of surface active agent, 0.1-1 part of brightener, 1-10 parts of pH regulator, 0.01-0.1 part of oxidizing agent, 0.1-1 part of stabilizer, 0.1-1 part of inhibitor, 20-30 parts of deionized water and 2-8 parts of grinding agent. Organic acid is selected from one or more of citric acid and diammonium hydrogen citrate. The pH value of the cleaning fluid is 9.5-11.5. The surface active agent is a polyether surface active agent. The grinding agent is silicon dioxide. The surface tension of the cleaning fluid can be reduced, surface contaminants can be rapidly stripped, the surfaces of the silicon wafers can be effectively washed, and the surface roughness of the silicon wafers can be reduced. Contamination of metal impurities to silicon wafers is restrained, and precipitation of oxide can be reduced. The cleaning fluid is low in cost, free of pollution to the environment and capable of thoroughly removing contaminants. Expansion of movable metal ions is effectively eradicated, reliability of chips is improved, and yield of production is improved.
Owner:章建群
Bifidobacterium bifidum anti-freeze culture medium and application method thereof
InactiveCN102408993ASolve problems such as easy to absorb water and become dampEasy to useMicroorganism based processesMicroorganism preservationBetaineSodium ascorbate
The invention provides a bifidobacterium bifidum anti-freeze culture medium, which includes the following components by weight: 16-20 g of lactose, 3-5 g of yeast extract, 6-9 g of sodium chloride, 0.6-1.0 g of sorbitol, 0.2-0.5 g of glutamic acid, 8-12 g of soybean peptone, 0.5-2.0 g of diammonium hydrogen citrate, 0.2-0.5 g of betaine, 1.0-2.5 g of dipotassium phosphate, 0.4-0.8 g of sodium ascorbate, 0.1-0.2 g of MgSO4, 0.5-1.0 ml of Tween-80, 3-5 g of cysteine hydrochloride and 1,000 ml of distilled water. In the bifidobacterium bifidum anti-freeze fungal powder is prepared by using the anti-freeze culture medium, the freeze-dry survival rate is over 58 percent, and viable count of fungal powder is over 2.0*10<11> cfu / g; the freeze-dry survival rate of the fungal powder prepared by MRS (de Man, Rogosa and Sharp) broth is 8.74 percent at most; and the bifidobacterium bifidum anti-freeze culture medium does not contain dried skim milk or trehalose, so that the problem of high probability of water absorption and moistening in storage of the fungal powder is solved.
Owner:SHAANXI RES INST OF AGRI PRODS PROCESSING TECH +1
Method for preparing microecological preparation via mixed synchronous fermentation of yeasts and lactic acid bacteria and application of method
The invention discloses a method for preparing a microecological preparation via mixture synchronous fermentation of yeasts and lactic acid bacteria and application of the method. According to the technical scheme, a culture medium is made from 2.5% of molasses, 0.8% of yeast extract, 0.2% of diammonium hydrogen citrate, 0.5% of sodium acetate, 5% of tomato juice, 0.2% of monopotassium phosphate and 0.02% of manganese sulfate, and has pH of 6.0. The method of mixed fermentation includes: inoculating a strain accounting for 1-3% by volume of the fermentation culture medium, fermenting at 25-31 DEG C, stirring at 100-150 rpm, and fermenting for 17-23 h; mixing the fermentation broth and attapulgite in a mass ratio of 1:2, and airing to obtain a composite microecological preparation. The composite microecological preparation prepared herein has high concentration of effective live bacteria, has long shelf life and has prominent water-purifying effect, fewer steps such as multi-tank fermentation and post-fermentation mixing are required in the conventional preparation process of microecological preparations, bacterial staining chances are slimmed, and the production cost is reduced as industrial leftovers are used as main fermentation materials.
Owner:天津市农业科学院
High-temperature-resistant long-service-life aluminum electrolytic capacitor
ActiveCN110706929AImprove temperature resistanceReduce volatilityLiquid electrolytic capacitorsCapacitanceElectrolytic agent
The invention discloses a high-temperature-resistant long-service-life aluminum electrolytic capacitor, which comprises a core cladding, a shell arranged outside the core cladding, and colloidal particles covering the core cladding and used for sealing the shell, and is characterized in that the core cladding adsorbs electrolyte; the electrolyte is composed of a solvent, a solute and an additive,wherein the solvent of the electrolyte is ethylene glycol; the solute of the electrolyte comprises ammonium hydrogen azelate, ammonium dodecanedioate, diammonium hydrogen citrate and ammonium isosebacate; the additives comprise ammonium p-nitrobenzoate, p-nitrophenol, monobutyl phosphate, ammonium hypophosphite, nano silicon dioxide, polyethylene oxide ether, 8-hydroxyquinoline and polyborate. Through the electrolyte, the temperature resistance of the electrolyte can be improved, volatilization of the electrolyte at a high temperature is reduced, saturated vapor pressure is reduced, the conductivity of the electrolyte is improved, DF and ESR values of the capacitor are reduced, spontaneous heating in the capacitor is reduced, the high-voltage aluminum electrolytic capacitor can resist a high temperature of 115 DEG C or above, and the service life of the high-voltage aluminum electrolytic capacitor is guaranteed.
Owner:ZHAOQING BERYL ELECTRONICS TECH
Lactobacillus acidophilus anti-freeze culture medium and application method thereof
InactiveCN102408992AImprove freezing abilityImprove freeze-drying survival rateMicroorganism based processesMicroorganism preservationBetaineFreeze-drying
The invention provides a lactobacillus acidophilus anti-freeze culture medium and an application method thereof. The culture medium includes the following components by weight: 16-20 g of glucose, 0.4-0.8 g of fructus tribuli polysaccharide, 3-5 g of yeast extract, 4-6 g of sodium chloride, 0.3-0.5 g of mannitol, 0.8-1.2 g of sodium glutamate, 8-12 g of soybean peptone, 0.5-2.0 g of diammonium hydrogen citrate, 0.2-0.5 g of betaine, 1.0-2.5 g of dipotassium phosphate, 0.1-0.2 g of MgSO4, 0.5-1.0 ml of Tween-80 and 1,000 ml of distilled water. The culture medium has the advantages that: after lactobacillus acidophilus is cultured by using the anti-freeze culture medium, the freeze-dry survival rate of the lactobacillus acidophilus can reach up to 79.54 percent, and viable count of fungal powder reaches up to 4.09*10<11> cfu / g; and the lactobacillus acidophilus MRS (de Man, Rogosa and Sharp) broth is used for culture, so that the freeze-dry survival rate of the prepared fungal powder isonly 49.72 percent, and the viable count is only 1.24*10<11> cfu / g.
Owner:SHAANXI RES INST OF AGRI PRODS PROCESSING TECH +1
Medium applicable to Lactobacillus acidophilus and preparation method thereof
ActiveCN107217020AHigh viable countShorten the timeBacteriaMicroorganism based processesDipotassium hydrogen phosphateSodium acetate
The invention specifically relates to a medium applicable to Lactobacillus acidophilus and a preparation method thereof, belonging to the field of biotechnology. The medium comprises, by weight, 1000 to 2000 ml of distilled water, 0.2 to 1.0 g / L of magnesium sulfate, 0.1 to 0.5 g / L of manganese sulfate, 10 to 40 g / L of yeast extract, 1.0 to 4.0 g / L of dipotassium hydrogen phosphate, 1.0 to 4.0 g / L of diammonium hydrogen citrate, 5 to 20 g / L of beef extract, 10 to 20 g / L of agar, 5 to 20 g / L of peptone, 0.5 to 2 g / L of Tween-80, 50 to 200 g / L of tomato juice, 7.5 to 30 g / L of sodium acetate, 10 to 40 g / L of glucose and 0.04 to 0.2 g / L of dandelion extract. The medium is especially applicable to culture of Lactobacillus acidophilus, can substantially increase the live-bacterium number of Lactobacillus acidophilus, and obviously shortens time before a stationary phase of Lactobacillus acidophilus; and due to addition of natural factors, prepared Lactobacillus acidophilus contains a great number of beneficial metabolites.
Owner:GUANGDONG PHARMA UNIV
Preparation method and application of boron and nitrogen co-doped carbon dot
ActiveCN108844935AImproving the quantum yield of carbon dotsThe method is simple and fastFluorescence/phosphorescenceFiltrationFreeze-drying
The invention relates to a preparation method and application of a boron and nitrogen co-doped carbon dot. The preparation method comprises the following steps: putting diammonium hydrogen citrate andpinacol diboron into a lining polytetrafluoroethylene reaction kettle; then adding ultrapure water; heating the solution at 160 to 240 DEG C for 6 to 12 h; at the end of the reaction, naturally cooling the solution to room temperature, and performing high-speed centrifugation, filtration and freeze drying on the solution to obtain yellow solid powder which is the carbon dot. When the boron and nitrogen co-doped carbon dot is used for detecting nimesulide, the fluorescence intensity, at 408 nm, of a solution is prepared from a solution prepared from the carbon dot, a nimesulide-containing sample solution to be tested and a B-R buffer solution with the pH of 10 is measured by using a fluorescence spectrophotometer, and the concentration of the nimesulide is calculated according to a standard curve; extremely high selectivity is achieved.
Owner:SHANXI DATONG UNIV
Novel culture medium good for increasing yield of lactic acid bacteria
InactiveCN105176862ALow input costReduce manufacturing costBacteriaMicroorganism based processesSodium acetateLactobacillus
The invention discloses a novel culture medium good for increasing yield of lactic acid bacteria. The medium comprises 0.30-0.40 g / l of ZnSO4.7H2O, 0.10-0.18 g / l of MgSO4.7H2O, 5.0-5.5 g / l of peptone, 5.0-6.0 g / l of beef extract, 10.0-11.0 g / l of tryptone, 5.0-6.0 g / l of yeast extract powder, 10.0-12.0 g / l of glucose, 1.0-1.5 ml / l of tween 80, 1.5-2.5 g / l of K2HPO4, 4.5-5.5 g / l of sodium acetate, 1.5-2.5 g / l of diammonium hydrogen citrate, 0.5% of fructooligosaccharide, and 1% of CaCO3. The novel culture medium is capable of increasing the yield of lactic acid bacteria, the problems such as preparation complexity and low viable count can be effectively solved, the viable count is increased, stable production can be achieved, and the yield can be increased.
Owner:CHENGDU YICHUANGSI BIOLOGICAL SCI & TECH
High-adhesion pearized silver printing ink and preparation method thereof
The invention relates to high-adhesion pearized silver printing ink which comprises the following components in parts by weight: 50 parts of pearl powder, 35 parts of silver powder, 52 parts of hydroxy fluorosilicone resin, 20 parts of 1,4-butanediol diacrylate, 6 parts of diammonium citrate, 6 parts of butyl glycidyl ethe, 0.8 parts of octaphenyl polyoxyethyiene, 0.5 parts of antioxidant 1010 and 80 parts of mixed solvent. The environment-friendly printing ink adopts the mixed solvent of dimethyl carbonate and trimethylolpropane polyether with the molecular weight of 400-1000, is basically free of toxic chemicals such as benzene and methylbenzene, is very excellent in environment-friendly property, and has excellent dissolving and dispersing properties for resin and a pigment; good durability is endowed for the printing ink; very good printing quality is represented; the environment-friendly printing ink is suitable for silk-screen printing of the surfaces of glass and a PMMA (polymethyl methacrylate) substrate; and after the printing ink is dried, the printing ink is bright in color, stable in adhesivity, and good in oil resistance and alcohol resistance.
Owner:SUZHOU ANJIE TECH
Method for forming extra high voltage anode foil
ActiveCN103177878AImprove performanceShort boost timeCapacitor electrodesUltra high voltagePhysical chemistry
Disclosed is a method for forming extra high voltage anode foil. Extra high voltage etched foil is placed in steam of 130-150 DEG C for 5-20 minutes, the extra high voltage etched foil is taken out and placed in a diammonium hydrogen citrate solution of 0.2-1.0wt% for 1-5 minutes, and the extra high voltage etched foil is taken out and subjected to sequent processing. By the aid of the method, the formed anode foil is stable in performance, the voltage rising time is less than 200 seconds, and the drain current of products is less than 25 mu A / cm2.
Owner:新疆广投桂东电子科技有限公司
Power supply solution for formation of electronic aluminum foil at middle-high voltage and application method thereof
The invention relates to power supply solution for formation of electronic aluminum foil at middle-high voltage and application method thereof. The power supply solution comprises citric acid and salt thereof, and specifically comprises citric acid, ammonium citrate dibasic, ammonium dihydrogen citrate, ammonium citrate tribasic, potassium citrate, and sodium citrate, one or few of the above components is / are totally dissolved by pure water so as to prepare the power supply solution with conductivity of 20-80ms / cm and pH value of 5.0-7.5. The power supply solution for formation prepared by the method can lower the voltage of a power supply tank, lower energy consumption, effectively improve production efficiency, and improve product quality.
Owner:新疆广投桂东电子科技有限公司
Culture medium for promoting synergistic proliferation of lactobacillus and bifidobacterium and application of culture medium
ActiveCN114854643AIncreased proliferationImprove acid production performanceBacteriaMicroorganism based processesBiotechnologyIntestino-intestinal
The invention provides a culture medium for promoting synergistic proliferation of lactobacillus and bifidobacterium and application of the culture medium. The culture medium is prepared from the following components in percentage by mass: 2 to 5 percent of prebiotic composition, 0.5 to 5 percent of peptone, 0.5 to 2 percent of beef extract, 0.1 to 2 percent of yeast extract, 0.05 to 1 percent of diammonium hydrogen citrate, 0.05 to 1 percent of K2HPO4, 0.01 to 1 percent of MgSO4, 0.01 to 1 percent of MnSO4, 0.05 to 1 percent of tween-80 and 0.05 to 1 percent of L-cysteine hydrochloride. The prebiotic composition is prepared from stachyose, mannose oligomer and xylooligosaccharide according to the mass ratio of (1 to 2): (1 to 2): (0.1 to 1). The composite prebiotic culture medium can obviously improve the proliferation and acid production capacity of lactobacillus and bifidobacterium, and the activity and functions of common beneficial bacteria in the intestinal tract are ensured through high-density culture, so that the common beneficial bacteria can be effectively colonized in the intestinal tract.
Owner:JIANGSU WECARE BIOTECHNOLOGY CO LTD
Nylon fabric slight-plasticizing softening finishing method
InactiveCN111321591AIncrease contact timeImprove permeabilityGrip property fibresPolymer scienceSilicone oil
The invention relates to the technical field of a fabric softening finishing method, and particularly relates to a nylon fabric slight-plasticizing softening finishing method. The finishing method comprises the steps of enabling a nylon fabric to be added into a diammonium hydrogen citrate solution for soaking treatment; putting the pre-soaked nylon fabric into a softening finishing agent for soaking, wherein the softening finishing agent comprises 5.0 to 10.0 parts of amino silicone oil, 5.0 to 8.0 parts of hydroxyl-terminated polysiloxane emulsion and 35 to 50 parts of water; and taking outthe soaked nylon fabric to be processed by a padding machine for two times, and then carrying out drying and shaping. The problem in the prior art that after the nylon fabric is processed by the softening finishing agent, the finishing agent is relatively weak in adhesive force on the nylon fibers and is not resistant to washing is solved; and by enabling the diammonium hydrogen citrate solution to be dissolved into water to be used a pre-soaking solution, the diammonium hydrogen citrate permeates and inserts into the nylon fibers to enable the nylon fibers to be slightly plasticized, and permeation and adsorption of amino silicone oil and the hydroxyl-terminated polysiloxane emulsion on the nylon fibers are implemented conveniently, so that the softening finishing agent can be firmly attached to the nylon fabric to improve the washing resistance.
Owner:CHENDU NEW KELI CHEM SCI CO LTD
Method for detecting contents of lead in foods
InactiveCN110231337APrevent deviationAccurate calculationMaterial analysis by observing effect on chemical indicatorPreparing sample for investigationCyanide compoundColor changes
The invention relates to the technical field of food safety, and discloses a method for detecting contents of lead in foods. According to the method, nitric acid solution, ammonia solution, diammoniumhydrogen citrate solution, editpotassium cyanide solution, dithizone stock solution, lead standard solution, lead standard working solution and dithizone working solution are prepared to carry out adetection test; a spectrophotometer, a 125 ml separating funnel, a 250 ml flask or a 250 ml conical flask and an electronic balance are prepared to fit the detection work; after a sample is treated through a wet resolution method or a dry ashing method, the sample is measured; and finally, the contents of lead in various foods are obtained through a formula. The method for detecting the contents of leads in foods is capable of accurately calculating and detecting liquid foods through the wet resolution method, and visually inspecting the color changes in the foods after the organic matters inthe liquid foods are completely decomposed and subsequent heating is completed, so as to carry out treatment for the next step more rapidly and more timely during the detection and then prevent the measurement results from deviations.
Owner:中农康正技术服务有限公司
Specific lactic acid bacteria culture medium and culture method and application thereof
PendingCN113604402AMeet separabilityMeet needsBacteriaMicroorganism based processesBiotechnologyDipotassium phosphate
The invention discloses a specific lactic acid bacteria culture medium and a culture method and application thereof. The culture medium is prepared by adding 8-12 g of tryptone, 10-15 g of beef extract, 8-12 g of yeast extract, 30-60 g of malt extract, 10-15 g of glucose, 1.5-2.5 g of diammonium hydrogen citrate, 1.5-2.5 g of dipotassium phosphate, 0.1-0.2 g of manganese sulfate monohydrate, 0.5-0.7 g of magnesium sulfate heptahydrate, 1-2 mL of Tween 80, 1-2 g of L-cysteine hydrochloride and 1-3 mg of vitamin B2 into per 1 L of tap water, and finally adding acetic acid to adjust to 4-6 g / 100mL. The culture medium formula and the culture method disclosed by the invention have the advantages of strong specificity, high culture efficiency, stable culture effect, simple components, low cost and easiness in commercialization, and the lactic acid bacteria HSLZ-75T and HSCY 2073 can be quickly and efficiently cultured.
Owner:JIANGSU HENGSHUN VINEGAR IND
Nickel electroplating method for NdFeB magnets
Owner:NINGBO YUNSHENG +4
Organic acidic matter-containing chemical mechanical polishing solution
InactiveCN102559057AImprove polishing rateHigh yieldSemiconductor/solid-state device manufacturingPolishing compositions with abrasivesExothermic reactionDiammonium hydrogen citrate
The invention provides organic acidic matter-containing chemical mechanical polishing solution for polishing through silicon via (TSV) for 3D package, which comprises grinding particles and an organic acidic matter, and further comprises a pH regulator, a surfactant, a stabilizer, an inhibitor and a bactericide. The organic acidic matter allows exothermic reaction during being mixed with a strong alkaline medium, and is selected from one or more of citric acid, ammonium hydrogen citrate, diammonium hydrogen citrate, ethylenediaminetetraacetic acid and azole. The inventive polishing solution can greatly improve polishing rate of TSV and increase yield.
Owner:ANJI MICROELECTRONICS (SHANGHAI) CO LTD
Emulsion paint for external wall and preparation method of emulsion paint
The invention relates to the field of building materials, and particularly discloses emulsion paint for an outer wall and a preparation method of the emulsion paint. The emulsion paint is prepared from the following raw material components in parts by weight: 380 to 420 parts of styrene-acrylic emulsion, 140 to 160 parts of coupling agent modified titanium dioxide, 114 to 126 parts of SiO2 powder, 5 to 10 parts of diammonium hydrogen citrate, 18 to 22 parts of coalescing agent, 155 to 165 parts of water, 4 to 8 parts of dispersing agent, 2 to 4 parts of defoaming agent, 0.5 to 1.5 parts of wetting agent, 10 to 20 parts of anti-freezing agent, 2 to 2.8 parts of hydroxyethyl cellulose, 0.8 to 1.2 parts of multifunctional additive, 45 to 55 parts of kaolin, 100 to 120 parts of heavy calcium powder, 73-77 parts of snowflake white powder, and 1.8-2.2 parts of a bactericide. The emulsion paint disclosed by the invention has excellent film-forming property, so that the emulsion paint has good water resistance, alkali resistance, water permeability and salt and alkali flooding resistance.
Owner:天津德普威涂料有限公司
Culture medium for culturing living biological medicine and application of culture medium
ActiveCN114806980APromote growth and proliferationIncrease growth rateAntibacterial agentsAntimycoticsBiotechnologyDisease
The invention relates to a culture medium for culturing a living biological medicine and application of the culture medium. The culture medium for culturing the living biological medicine is prepared from peptone, beef extract, lactulose, mannose oligomer, raffinose, yeast extract, diammonium hydrogen citrate, K2HPO4, MgSO4, MnSO4, Tween-80 and L-cysteine. The living biological medicine comprises any one or a combination of at least two of lactobacillus reuteri, lactobacillus paracasei, lactobacillus acidophilus, lactobacillus rhamnosus, bifidobacterium longum, pediococcus pentosaceus, lactobacillus crispatus, lactobacillus jensenii or lactobacillus gasseri. The culture medium has an unexpected promoting effect on growth, proliferation, metabolism and efficacy exertion of living biological medicines. The efficacy is such as prevention or treatment of gastrointestinal diseases, immune diseases, cancers, vaginitis and other diseases.
Owner:JIANGSU WECARE BIOTECHNOLOGY CO LTD
Carrot lactobacillus fermentation lysate and preparation method thereof
InactiveCN110974746AImproves antioxidant activityRetain biological activityCosmetic preparationsBacteriaBiotechnologySodium acetate
The invention provides a carrot lactobacillus fermentation lysate, which is prepared by the following steps: (1) adding fresh carrots into water, stirring and crushing, and filtering to obtain a supernatant which is the carrot juice; (2) mixing glucose, peptone, yeast powder, sodium acetate, dipotassium phosphate, diammonium hydrogen citrate, magnesium sulfate heptahydrate, manganese sulfate monohydrate and tween-80, adding the carrot juice, and uniformly mixing the materials to obtain a fermentation culture medium; (3) adding lactic acid bacteria into a seed culture medium, and culturing at 37 DEG C for 24 hours to obtain a seed solution; (4) inoculating the seed solution into the fermentation culture medium, and carrying out fermentation culture to obtain a fermentation solution; and (5)carrying out centrifugal separation on the fermentation liquor to obtain bacterial sludge, adding the bacterial sludge into an xanthan gum aqueous solution, stirring until the material is uniformly dispersed, and carrying out ultrahigh-pressure homogenization treatment to obtain the carrot lactobacillus fermentation lysate. The invention also provides a preparation method of the carrot lactobacillus fermentation lysate. The carrot lactobacillus fermentation lysate provided by the invention has relatively strong antioxidant activity.
Owner:GUANGZHOU ADDITIVE FREE COSMETIC CO LTD
Method for increasing platinum activity through surface modification
InactiveCN1743072ALow priceIncrease active pointCell electrodesCatalyst regeneration/reactivationHigh activityPt element
Owner:UNIV OF SCI & TECH BEIJING
Production method of diammonium hydrogen citrate
InactiveCN104311412AWon't wasteThe production process is simple and scientificOrganic compound preparationCarboxylic acid salt preparationRaw materialChemistry
The invention discloses a production method of diammonium hydrogen citrate and relates to the technical field of production processes of chemical raw materials. The production method comprises the following steps: filling a reaction kettle with purified water taking up a certain volume of a tank body, and stirring; adding clean citric acid to prepare a 40%-60% acid solution, opening a steam valve, and heating to 40-60 DEG C for fully dissolving acid; opening a liquid ammonia valve, and slowly filling the reaction kettle with liquid ammonia; when a large amount of heat is released in reaction, controlling the flow quantity and the speed, and enabling the temperature to not exceed 75 DEG C; adjusting the pH value to be 4.5-5.5, and opening a cooling water valve for cooling when a reaction end point is reached; cooling to less than 30 DEG C, and performing centrifugal separation when a large amount of crystals are separated out; drying separated solids through a vibrated fluidized bed, and recycling mother liquid. The production method is simple, scientific and easy for large-batch production; moreover, raw materials cannot be wasted in the production process, the production cost is reduced, the product quality is good, and the application range is extended.
Owner:NINGXIANG XINYANG CHEM
Preparation method of diammonium hydrogen citrate
InactiveCN104447287AHigh concentration ratioReduce water consumptionOrganic compound preparationCarboxylic acid salt preparationPhysical chemistryEngineering
The invention discloses a preparation method of diammonium hydrogen citrate. The preparation method comprises the following steps: by taking edible citric acid and liquid ammonia as raw materials, dissolving the edible citric acid into water to prepare a 39%-51% solution; introducing liquid ammonia into the citric acid solution, slowly adding liquid ammonia, and controlling the pH value of the solution to be within 4.5-5.5; performing air cooling on the materials to room temperature until a great amount of diammonium hydrogen citrate is crystalized and separated out, and separating mother liquor through a centrifugal machine to obtain diammonium hydrogen citrate crystals; conveying the diammonium hydrogen citrate crystals to a drying oven at 62DEG C-70DEG C, and drying for 45-60 minutes, to obtain diammonium hydrogen citrate; continuously dissolving edible citric acid with the remaining mother liquor and recycling. The high-concentration citric acid is prepared, so that the usage amount of water is less, the citric acid is cooled, crystalized and separated out through the ammonina introduction and reaction, centrifugal is performed, dehydrated mother liquor can be continuously used for dissolving citric acid, and no energy consumption, no emission and no environment pollution exist during the overall process.
Owner:NANTONG FEIYU FINE CHEM
Composition for measuring glucose having improved substrate specificity
InactiveUS20070037239A1Reduce non-specific reactionsIncreased substrate specificityMicrobiological testing/measurementBiological material analysisN-Butyric acid2-ketoglutaric acid
The present invention relates to a method for lowering activity with respect to maltose in glucose measurement comprising a step of reacting modified pyrroloquinoline quinone dependent glucose dehydrogenase subjected to amino acid sequence modification, wherein pyrroloquinoline quinone dependent glucose dehydrogenase is reacted in the presence of at least one type of substance selected from the group comprising succinic acid, malonic acid, glutaric acid, malic acid, phthalic acid, 2-ketoglutaric acid, 3,3-dimethylglutaric acid, pimeric acid, suberic acid, adipic acid, maleic acid, potassium chloride, ammonium chloride, diammonium hydrogen citrate, L-lysine, taurine, calcium glycerate, amino-n-butyric acid, sodium glycolate, sodium α-ketoglutarate, fumaric acid, glycine, glutamic acid, serine and citric acid.
Owner:TOYOBO CO LTD
Probiotic beverage for improving beauty effect of cubilose and preparation method
PendingCN113331328AIrregular vibrationAvoid pollutionBioreactor/fermenter combinationsBiological substance pretreatmentsBiotechnologySodium acetate
The invention discloses a probiotic beverage for improving the beauty effect of cubilose and a preparation method, and relates to the technical field of preparation of cubilose. The probiotic beverage for improving the beauty effect of cubilose is prepared by synthesizing sialic acid from probiotics in a proliferation medium by using an SA culture medium, wherein the proliferation medium is prepared from the following components in percentage by mass: 3 percent of glucose, 1 percent of peptone, 0.5 percent of dipotassium phosphate, 0.05 percent of magnesium sulfate, 0.025 percent of manganese sulfate, 0.2 percent of diammonium hydrogen citrate, 0.5 percent of sodium acetate, 10 percent of carrot juice and the balance distilled water; the probiotics are lactobacillus acidophilus and lactobacillus casei. According to the probiotic beverage and the preparation method, special nutritional raw materials are added into culture solutions of various probiotics, so that the probiotics generate the sialic acid with physiological activity, and the nutritional effect of the probiotics is improved; the obtained probiotic product has double health-care effects of the probiotics and the sialic acid; and the preparation method is simple and is favorable for rapid production of enterprises.
Owner:福建君生益本色生物科技有限公司
Environment-friendly neutral cleaning agent
The invention discloses an environment-friendly neutral cleaning agent. The cleaning agent is composed of, by weight, 20%-50% of glycolic acid, 40%-75% of ammonium citrate dibasic, 0.5%-5% of oxalic acid, 0.1%-5% of hydrofluoride, and 0.1%-5% of assistants. According to a preparation method for the environment-friendly neutral cleaning agent, after being ground, the raw materials are evenly mixed and stirred. The environment-friendly neutral cleaning agent has the advantages that 1, the corrosion rate to carbon steel is smaller than 0.945 g / h.m<2>, the corrosion rate to stainless steel is smaller than 0.00113 g / h.m<2>, the corrosion rate to aluminum and aluminum alloy is smaller than 0.00186 g / h.m<2>, the corrosion rate to copper and copper alloy is smaller than 0.0128-0.0368 g / h.m<2>, and the corrosion rate to titanium alloy, nickel-based alloy and the like is smaller than 0.000215 g / h.m<2>; 2, cleaning liquid can be directly degreased, cleaned and passivated integrally, and therefore the discharging amount of waste water is reduced, and a large quantity of cost is reduced; 3, cleaning waste water is naturally degraded and can be completely degraded within 20-25 days, and environment pollution is avoided.
Owner:SHANGHAI LANPU CLEANING TECH CO LTD
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