19 results about "Calcium complex" patented technology

The invention belongs to the technical field of calcium-containing solid waste resource utilization, and particularly relates to a method for strengthening leaching of calcium ions in solid waste by regulating and controlling a coordination structure through cooperation of organic alcohol amine and amino acid. The method comprises the following steps: mixing the calcium-containing solid waste with a composite leaching agent solution, and leaching to obtain a calcium ion leaching solution; the composite leaching agent solution comprises organic alcohol amine, amino acid and water. According to the invention, an organic alcohol amine-amino acid synergistic coordination structure is innovatively constructed, and a stable calcium complex is spontaneously formed under mild conditions. According to the method, the calcium ion coordination microenvironment is synergistically regulated and controlled through organic alcohol amine-amino acid to achieve efficient leaching of calcium, strong acid or strong alkali pretreatment is not needed, and the energy consumption and equipment corrosion risk are greatly reduced. According to the method, the closed-loop circulation of high-selectivity leaching of calcium ions and in-situ regeneration of the composite leaching agent can be realized, and the method has good application potential.

A grease composition containing a base oil and a calcium complex soap as a thickening agent, wherein C18-22 straight-chain substituted or unsubstituted higher fatty acid; substituted or unsubstituted aromatic monocarboxylic acid having a benzene ring; C2-4 straight-chain saturated lower fatty acid; and substituted or unsubstituted saturated dicarboxylic acid are used as carboxylic acids constituting the calcium complex soap.

The invention relates to the technical field of pet food, in particular to an eye-benefiting and liver-protecting fermentation type canine nutrient and a preparation method thereof, and the eye-benefiting and liver-protecting fermentation type canine nutrient comprises the following components: a liver-protecting component, an eye-benefiting component, a chitosan-calcium compound solution, beer yeast powder, honey, lactobacillus plantarum freeze-dried powder and bacillus subtilis freeze-dried powder. Porous starch of the liver protection component carries and protects N-acetylcysteine, and carnosine and quercetin modified by zein remove fermentation byproducts. The eye benefiting component is loaded and protected by octenyl succinic acid modified starch, and the dispersity and the stability of the xanthophyll are improved by grafting a hydrophobic cavity of sulfobutyl-beta-cyclodextrin. The laccase fixed on the surface of the porous starch catalytically oxidizes phenolic hydroxyl groups in a tannic acid-gelatin network on the surface of the eye benefiting component by using dissolved oxygen, a protective shell is formed by in-situ crosslinking and curing, and a chitosan-calcium compound solution closes the physical distance between the laccase and the tannic acid-gelatin network, so that the enzymatic oxidation reaction rate is increased.

This application provides a method for deep removal of calcium impurities from scandium oxide, belonging to the field of rare earth metal oxide purification. The method includes: dissolving scandium oxide raw material containing calcium impurities to obtain a calcium-containing scandium solution; adding a pH adjuster to the calcium-containing scandium solution to obtain a first scandium solution; reacting the first scandium solution with phosphoric acid and / or phosphate to obtain a second scandium solution and solid calcium phosphate; reacting the second scandium solution with a complexing agent to obtain a third scandium solution; reacting the third scandium solution with oxalic acid and / or sodium oxalate to obtain scandium oxalate crystals and a calcium complex solution; adding a strong acid solution to the calcium complex solution; and calcining the scandium oxalate crystals to obtain scandium oxide. Through calcium phosphate precipitation-complexation-crystallization, not only can calcium impurities be deeply removed from scandium oxide products, but impurities such as iron, titanium, and zirconium can also be removed, resulting in scandium oxide products with a purity of over 99.99%.

The application belongs to the field of catalyst and its preparation technology, and particularly relates to a calcium complex catalyst and a preparation method and application thereof. The preparation method of the calcium complex catalyst comprises the following steps: in an ethanol-water solution, o-nitrobenzaldehyde, p-aminobenzenesulfonic acid and an alkaline additive are added, and after heating and stirring, a calcium source is added to the above solution, then heating and stirring are continued at 70-85 DEG C, and after filtration and standing of the filtrate, the calcium complex catalyst is obtained. After benzyl alcohol, a solvent and the calcium complex catalyst are mixed, heating reaction is carried out, and benzaldehyde is prepared. The preparation method of the calcium complex catalyst has the characteristics of low cost, high selectivity, stability and greenness.

The invention discloses a phenanthroline calcium complex as well as a preparation method and application thereof. According to the invention, an 8-hydroxyquinoline derivative is used as a main ligand, 5-chloro-1, 10-phenanthroline is used as an active ligand, and the main ligand and the active ligand react with Ca (NO3) 2.4 H2O to synthesize the phenanthroline calcium complex. Experimental results show that compared with human ovarian cancer cells SK-OV-3, the phenanthroline calcium complex has a very good inhibition effect on SK-OV-3 / DDP cancer cells, has small toxicity on normal HL-7702 cells, can inhibit the growth of the SK-OV-3 / DDP cancer cells in a targeted manner, shows excellent anti-tumor activity, has potential medicinal value, and can be applied to preparation of drugs for treating ovarian cancer cells, such as ovarian cancer cells, ovarian cancer cells, ovarian cancer cells, ovarian cancer cells, ovarian cancer cells, ovarian cancer cells, ovarian cancer cells, ovarian cancer cells and ovarian cancer cells. The compound is expected to be used for preparing various anti-tumor drugs.

The invention discloses a preparation method of a citric acid grafted casein phosphopeptide calcium compound. The preparation method comprises the following steps: 1, dissolving casein phosphopeptide in a 0.1 mol / L MES buffer solution with the pH value of 5.5; 2, dissolving citric acid according to a mass ratio of the citric acid to the casein phosphopeptides of 1: 1, adding a reagent according to a ratio of CA: EDC: NHS of 1: 1.5: 1.2, and activating in an ice bath at 4 DEG C for 30 minutes; 3, mixing the two solutions, reacting at room temperature for 24 hours, dialyzing, and freeze-drying to obtain CA-CPP; and 4, dissolving CA-CPP in water, adding calcium acetate monohydrate to adjust the pH value to 7.0, carrying out a reaction at 50 DEG C for 60 min, carrying out ethanol precipitation, and carrying out centrifugation and freeze-drying to obtain the product. The calcium chelating ability and stability are improved, the process is simple and safe, and the method is suitable for functional food and calcium supplements.

The present invention provides a biodegradable grease composition comprising a base oil, a thickener and an inorganic powder wherein the base oil comprises a polyol ester oil and the thickener comprises a calcium complex soap.

The invention discloses a method for improving the purity of calcium sulfate in a process for preparing calcium sulfate from ardealite, which comprises the following steps: mixing ardealite with an organic solvent to obtain ardealite turbid liquid; adding a composite solvent into the phosphogypsum suspension to obtain a mixed solution; a main substance in the mixed solution is a chelate formed by an organic solvent and calcium ions. And heating and stirring the obtained mixed solution to react, and filtering to obtain a clear calcium complex solution. And adding a surfactant and a decomplexing, purifying and absorbing composite functional agent into the clear calcium complex solution, heating and stirring to react, and performing suction filtration and separation to obtain the high-purity calcium sulfate crystal. In the process of crystallizing and separating out calcium sulfate, impurities such as partial heavy metal ions, phosphorus and fluorine are attached to the surfaces of crystals, so that the purity of calcium sulfate is reduced. A surfactant and a decomplexing and purifying composite functional agent are added to improve the dispersing performance of the calcium sulfate crystal, and impurities such as heavy metal, phosphorus and fluorine in a solution are adsorbed to improve the purity of the calcium sulfate crystal.

The present invention provides a biodegradable grease composition comprising a base oil, a thickener, and an inorganic powder, wherein the base oil comprises a polyol ester oil and the thickener comprises a calcium complex soap.

This invention relates to the field of edible mushroom cultivation technology, and discloses a mushroom cultivation medium based on fungi grass modified with tannin-calcium complexation and containing a plant-derived biochar framework, as well as its preparation method. The medium uses fungi grass fiber as the main carbon source. The fungi grass fiber is complexed and modified with tannins and soluble calcium salts to form a complexed and solidified layer on its surface, thus delaying later spoilage and structural failure. Plant-derived biochar particles are introduced as an inert physical support framework to enhance the structural stability and long-lasting aeration of the medium. The medium preferably employs a dual-particle size structure of coarse fiber and fine powder, and is combined with wheat bran / rice bran, calcium regulators, and gypsum or lime to maintain high strength and aeration of the mushroom logs under multi-flush fruiting conditions, reducing the risk of collapse, soft rot, and contamination by microorganisms, and improving later yield retention and cumulative yield.

The invention provides a supported zinc-calcium complex as well as a preparation method and application thereof. By adopting the one-step leaching method of the carbide slag and the zinc oxide ore, ammonia released when the carbide slag is dissolved under the action of ammonium chloride is fully utilized, and zinc ions in the zinc oxide ore are leached by utilizing the ammonia component, so that the situation that ammonia water is additionally added when the zinc oxide ore is leached can be avoided, and the preparation process is simplified; meanwhile, zinc and calcium refined clear liquid obtained through leaching is subjected to a one-step pyrolysis and carbonization method, the interaction between free ammonia generated during pyrolysis of the zinc-ammonia complex and ammonia consumed during carbonization of soluble calcium is fully utilized, additional addition of ammonia during calcium carbonization is avoided, and the energy consumption of ammonia distillation of the zinc-ammonia complex is reduced; the preparation method is simple in technological process, and the cost of the calcium carbonate carrier and ammonia is greatly reduced; meanwhile, the leaching liquid ammonium chloride and the carbon dioxide can be recycled, so that the input cost of the leaching liquid and the carbon dioxide is reduced, and the emission of nitrogen-containing waste liquid is reduced.

The invention relates to vitamin K2 micro-capsule powder and application thereof, and solves the problems of low embedding rate and poor stability caused by micro-capsule structure defects (such as irregular, broken, adhered, porous and loose micro-capsule structures) of vitamin K2, and particularly serious degradation caused by compatibility with metal ions such as calcium and magnesium in calcium composite tablets in the prior art. Specifically, the vitamin K2 microcapsule powder provided by the invention comprises the following components: an oil phase component: vitamin K2, carrier oil, an oil phase emulsifier and an antioxidant; the water-phase component comprises a wall material, a water-phase emulsifier and water, and has a nearly spherical form, a compact surface, an internal solid structure and uniform particle size distribution, and the embedding rate is greater than or equal to 89% by an HPLC (High Performance Liquid Chromatography) method; the accelerated stability (40 DEG C / 75% RH, 6 months) retention rate of the microcapsule powder is greater than or equal to 96%; according to the calcium composite tablet prepared on the basis of the microcapsule powder, the content of vitamin K2 is larger than or equal to 89% and the retention rate is larger than or equal to 79% under the same acceleration condition (40 DEG C / 75% RH, 6 months).

The invention discloses an 8-hydroxyquinoline binuclear calcium complex as well as a preparation method and application thereof. According to the invention, an 8-hydroxyquinoline derivative is used as a main ligand, 4, 7-diphenyl-1, 10-phenanthroline and 1, 10-phenanthroline are used as auxiliary ligands, and the main ligand and the auxiliary ligands react with Ca (NO3) 2.4 H2O to synthesize the 8-hydroxyquinoline binuclear calcium complex. Compared with human ovarian SK-OV-3 cancer cells, the 8-hydroxyquinoline binuclear calcium complex has a good anti-cancer effect on the SK-OV-3 / DDP cancer cells and almost has no toxicity on normal HL-7702 cells, it is indicated that the 8-hydroxyquinoline binuclear calcium complex can inhibit proliferation of the SK-OV-3 / DDP cancer cells in a targeted mode, shows excellent anti-tumor activity and has potential medicinal value, and the 8-hydroxyquinoline binuclear calcium complex has good application prospects. The compound is expected to be used for preparing various anti-tumor drugs.

To provide a carbonate apatite coated magnesium material that exhibits interference colors, enabling both improved biocompatibility and device identification, and a method for producing the same. [Solution] An aqueous solution is prepared containing a calcium complex at a concentration higher than 0.2 mol / L and a phosphate solution in a concentration of 0.5 to 1.25 times that of the calcium complex (S100). A carbonate is dissolved in the aqueous solution containing the calcium complex and phosphate at the above concentrations to prepare a coating treatment solution (S102). The coating treatment solution is heated (S104). A magnesium material having a surface roughness Ra of 0.05 μm to 2.0 μm is immersed in the heated coating treatment solution (S106). The magnesium material is then coated with apatite mainly composed of carbonate apatite to a film thickness that exhibits the desired interference color (S108).

The application discloses a probiotic calcium tablet and a preparation method thereof. The probiotic calcium tablet comprises the following raw materials in parts by weight: a calcium compound 40-60 parts; a probiotic compound 10-20 parts; an absorption promoter 15-25 parts; a stabilizer 8-15 parts; and a flavor modifier 5-10 parts. The application can solve the problems of low calcium absorption rate and easy inactivation of probiotics in the prior art.

The invention belongs to the technical field of agricultural resource utilization and soil improvement, and particularly relates to a method for preparing a soil conditioner by mixing peanut shells and egg shells and application of the soil conditioner. The soil conditioner is prepared from the following raw materials: 35-47 parts of modified peanut shell powder; 20-30 parts of modified egg shell powder; 6-14 parts of a humic acid-calcium complex; 5-12 parts of modified zeolite; 1.5 to 3.5 parts of a chitosan-alginic acid compound; and 0.2 to 0.8 part of a rhizosphere adjusting component.

To provide a method for efficiently recovering calcium from a calcium-containing compound, and to provide a calcium complex.SOLUTION: The method for recovering calcium includes a step of preparing a calcium-containing compound and a step of bringing the calcium-containing compound into contact with a carboxylic acid having two or more and three or less carboxy groups and having one or more amino groups or hydroxy groups in water to generate a complex of calcium ions and the carboxylic acid, and can further include a step of bringing the complex into contact with an acid or a salt thereof in water to generate a calcium salt. The calcium complex contains calcium ions and a carboxylic acid having two or more and three or less carboxy groups and having one or more amino groups or hydroxy groups.SELECTED DRAWING: None

The present application relates to pyrene tetrasulfonic acid calcium complex fluorescent probe and its preparation method and application, belong to the technical field of crystal material synthesis;The preparation method of the pyrene tetrasulfonic acid calcium complex fluorescent probe includes the following steps S1: weighing 2 equivalent metal calcium salt is dissolved in appropriate DMF, ultrasonic dissolution is uniform, S2: weighing 1 equivalent H-PTS is dissolved in appropriate DMF, ultrasonic dissolution is uniform;The DMF solution containing calcium salt is poured into the solution containing H-PTS, stirs 5min, shakes uniformly, moves to the oven, 130 DEG C heating 48h, after finishing, stationary cooling to room temperature, obtain white block crystal, wash three times with ether, confirm structure on X ray single crystal diffractometer, obtain pyrene tetrasulfonic acid calcium complex probe;The complex has higher sensitivity and better selectivity as fluorescent probe for detecting iron ion.