59 results about "Diammonium hydrogen citrate" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The present invention relates to a preparation of high-activity direct fuel cell. It utilizes surface modification method to treat electrode and catalyst surface, and said method includes the following steps: in the acidic solution of methyl alcohol adding two surfactants of sodium dodecanesulphonate or hydrogen diamine citrate, also can mix two solutions in which the sodium dodecanesulphonate or hydrogen diamine citrate is respectively added according to a certain ratio. The adoption of said method not only can raise electric catalytic capability of platinum for acidic solution of the methyl alcohol so as to raise oxidation speed of methyl alcohol, but also the application of surfactant can reduce adsorption quantity of carbon monoxide on the platinum electrode, so that the toxicant action of carbon monoxide to platinum electrode can be reduced.

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.

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.

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.

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.