13 results about "Iron chelate" patented technology

The invention discloses a method for preparing nano calcium carbonate by efficiently removing iron impurities in nano calcium carbonate raw material ore, and belongs to the technical field of nano material preparation. The method comprises the steps of raw material pretreatment, digestion treatment, size mixing treatment, carbonization treatment, surface treatment and drying, in the size mixing treatment process, a whitening agent Na2SO3 is adopted for removing iron in raw material ore, Na2SO3 serves as a reducing agent, Fe < 3 + > is reduced into Fe < 2 + >, a proper amount of whitening auxiliary such as DTPA or triethanolamine forms colorless water-containing iron chelate ions with iron ions, and the iron chelate ions are subjected to surface treatment. And through a synergistic system of the whitening agent and the whitening auxiliary agent, efficient removal of iron is realized. The whiteness of the prepared nano calcium carbonate reaches up to 97.2%, the nano calcium carbonate has the remarkable advantages of being efficient, environmentally friendly, economical and the like, the iron content in the nano calcium carbonate can be remarkably reduced, the purity and whiteness of the product are effectively improved, and the high requirement of the high-end application field for the quality of the nano calcium carbonate is met. Meanwhile, the method is simple and convenient to operate and easy to industrially apply, and has wide market prospects and popularization value.

This invention relates to the field of biomedical technology, providing a phosphorylated peptide iron chelate of Yanbian cattle hemoglobin, its preparation method, and its applications. The Yanbian cattle hemoglobin phosphorylated peptide iron chelate is prepared from Yanbian cattle blood through enzymatic hydrolysis, phosphorylation, and iron chelation. Specifically, the phosphorylation step actively introduces strongly negatively charged phosphate groups into the Yanbian cattle hemoglobin peptide chain, serving as new and stronger metal ion coordination sites, thereby specifically enhancing its chelating ability for ferrous ions and the stability of the complex. The Yanbian cattle hemoglobin phosphorylated peptide iron chelate possesses high iron content and good gastrointestinal stability, showing broad application prospects in the preparation of a new generation of highly efficient and low-irritant iron supplements.

The invention belongs to the technical field of functional food, and particularly relates to a donkey-hide gelatin peptide-iron chelate preparation and a preparation method thereof. The preparation method comprises the following steps: adding colla corii asini powder into water, and melting by heat to obtain a colla corii asini stock solution; adding protease into the colla corii asini stock solution for enzymolysis to obtain colla corii asini enzymatic hydrolysate; bOC-L-cysteine-curcumin, tetrabutylammonium bromide and iodine are added into the colla corii asini enzymatic hydrolysate, a sodium hydroxide solution with the concentration of 0.1 mol / L is adopted for adjusting the pH value, then a reaction is conducted, and a colla corii asini enzymatic hydrolysate retreatment solution is prepared; ascorbic acid is added into the donkey-hide gelatin enzymolysis retreatment liquid, the pH is adjusted with a 10% hydrochloric acid solution, then ferrous chloride is added, centrifugation is carried out after chelation, nanofiltration treatment is carried out, and a nanofiltration concentrated solution is a donkey-hide gelatin peptide-iron chelate; and uniformly stirring and mixing the colla corii asini peptide-iron chelate and genkwanin to obtain the colla corii asini peptide-iron chelate

The invention discloses fly ash artificial soil and a preparation method thereof, and relates to the technical field of artificial soil, the key point of the technical scheme is that the preparation method comprises the following steps: step 1, acid treatment: taking fly ash, adding acid, mixing with the fly ash, and stirring to obtain acid-treated fly ash with the pH value of 7-7.5; step 2, washing and desalting: putting the acid-treated fly ash into water, stirring for 30-60 minutes, standing for 3-5 hours, and filtering to remove supernate, so as to obtain washed fly ash; step 3, pretreating cattle and sheep manure; step 4, chelating humic acid; step 5, fermentation treatment: mixing the washed fly ash, the decomposed cattle and sheep manure and the humic acid iron chelate, and adding a fermentation inoculant for fermentation to obtain an artificial soil blank; and 6, post-treatment: carrying out particle size grading screening on the artificial soil blank, adding a pH buffer agent and / or carrying out embedding synergism to obtain the fly ash-based artificial soil. The fly ash artificial soil is prepared by combining industrial solid waste fly ash with agricultural waste, and the effects of no pollution and effective improvement of the soil environment are achieved.

The application discloses a kind of hydroxyl methionine chelate and its preparation method and application, chelate can be made animal feed additive and nutrient agent, for binuclear chelate system, chelate structure A and chelate structure B include central iron ion and hydroxyl methionine ligand;The carbonyl positive coordination connection of central iron ion of chelate structure A is connected with the hydroxyl methionine ligand of chelate structure B;Preparation method includes: hydroxyl methionine is dissolved, and ligand neutralizing liquid is prepared;S2, ligand neutralizing liquid is mixed with ferrous chloride tetrahydrate solution uniformly, and reaction is complete.The hydroxyl methionine iron chelate of the application is strong in stability, can keep the biological activity of iron in complex chyme environment, can avoid absorption antagonism with manganese, copper and other trace elements, optimizes overall mineral utilization efficiency, significantly improves the absorption rate of animal, preparation condition is mild, cost is controllable, compatible with existing feed production line, and industrialization prospect is good.

The present invention relates to a sulfur denitrification agent using sulfur-containing wastes, which can be recycled as a denitrification agent for water treatment by using discarded mine drainage sludge, sulfur-containing wastes generated in a hydrogen sulfide removal process, and the like. The sulfur denitrification agent using sulfur-containing wastes of the present invention includes, on the basis of the total weight, 50-70 wt% of mine drainage sludge, 15-30 wt% of waste iron sulfide generated in a hydrogen sulfide removal process, and 15-30 wt% of sulfur powder, wherein as the sulfur powder, sulfur generated in a desulfurization process is used, and the sulfur generated in the desulfurization process is sulfur sludge generated in the desulfurization process using iron chelate (Fe-chelate) or sulfur-containing wastes generated in a bio-sulfur treatment process.

The invention discloses preparation and application of an iron chelate for reducing degradation of lactoferrin in stomachs of dogs and cats, and relates to the technical field of metal chelate preparation. Polysaccharide extracts of okra and tremella are chelated with Fe < 3 + > to prepare the iron chelate, and the iron chelate can increase Fe < 3 + > concentration and liquid viscosity in a local environment around lactoferrin in the stomachs of dogs and cats to inhibit Fe < 3 + > from being separated from the lactoferrin, so that the structural stability of the lactoferrin in the stomachs of dogs and cats is improved, and degradation of the lactoferrin is reduced. The iron chelate provided by the invention can be applied to or matched with related products of lactoferrin.

The application discloses a method for degrading sulfamethoxazole under neutral pH conditions by using peroxyacetic acid, and the method is characterized in that: firstly, protocatechuic acid is chelated with ferric iron in proportion, and then the protocatechuic acid-ferric iron chelate is used to activate peroxyacetic acid, so as to generate active species mainly in the form of high-valence iron under neutral pH conditions, and the active species are used to oxidize and degrade sulfamethoxazole in water. It is found that the protocatechuic acid can significantly improve the efficiency of the ferric iron-activated peroxyacetic acid method for degrading sulfamethoxazole in water and the anti-water quality background interference ability, and greatly widen the effective pH application range. The method solves the problems of slow reaction rate, poor anti-interference ability and narrow pH application range of the ferric iron-activated peroxyacetic acid method, and has the advantages of economic efficiency, simple operation, green environmental protection and the like, and has a wide application prospect in the treatment of organic wastewater containing sulfamethoxazole, such as medical wastewater and aquaculture wastewater.

The application discloses a method for treating acid in-situ leaching uranium groundwater by chemical and biological synergy, and belongs to the technical field of groundwater treatment. The method is characterized by adding an iron chelating agent to acid in-situ leaching uranium groundwater, chelating high-concentration ferrous ions to form stable iron chelates; then based on the dual effects of hydroxyl radical chemical oxidation of the continuous single-electron transfer pathway of the ferrous chelates and biological oxidation of acidophilic iron-oxidizing bacteria in the groundwater, chelates of ferric ions are rapidly formed and hydrolyzed to form ferric hydroxyl sulfate precipitates, thereby removing more than 90% of the dissolved iron and a small part of the sulfate in the acid in-situ leaching uranium groundwater; subsequently, a small amount of lime is used for neutralization, so that the discharge of pollutants such as uranium, manganese and nickel in the groundwater can meet the standards. The method can reduce the consumption of the lime used for neutralization and the generation of metal waste by more than 50% in the treatment of acid in-situ leaching groundwater, and is efficient, stable, economical and practical.

The invention discloses a preparation method of a salty-taste-enhanced ferrous chelate special for low-sodium food, and belongs to the technical field of food nutrition enhancement and vegetable protein deep processing. Red bean protein serves as a raw material, salty-taste-enhanced red bean protein zymolyte with the molecular weight ranging from one thousand Daltons to three thousand Daltons and rich in glutamic acid and aspartic acid is prepared through directional enzymolysis of alkaline protease, a stable three-dimensional cross-linking chelation system is constructed with carboxyl bidentate coordination as a core mode, and the salty-taste-enhanced red bean protein zymolyte with the molecular weight ranging from one thousand Daltons to three thousand Daltons is obtained. And preparing to obtain the difunctional ferrous chelate. Under the optimal process, the ferrous ion chelation rate reaches 67.49%, the chelate has excellent stability under the conditions of weak acidity, high salt and hot processing, metal peculiar smell of ferrous ions can be effectively masked, meanwhile, the salty taste and umami taste characteristics of red bean peptide are reserved, the double functions of iron nutrition enhancement and salty taste enhancement are achieved, and the chelate is suitable for being used in the field of food processing. And a technical support is provided for high-value utilization of the red bean protein and development of a novel bifunctional iron enhancer.

The invention discloses a method for preparing high-nutrition bean flour through ion regulation combined with spray drying, and belongs to the technical field of bean product processing. The method comprises the following steps: spraying soybeans, drying and peeling; grinding into thick liquid; carrying out enzyme deactivation and inactivation; centrifugally discharging slag; sterilizing and deodorizing; performing composite enzymolysis; adjusting metal ions; sterilizing and concentrating; performing spray drying; the high-nutrition type bean flour is obtained. According to the method, soybeans are rapidly sprayed, drying and peeling of the soybeans are facilitated, a compound enzyme enzymolysis technology is adopted, the soybean enzymolysis degree is improved, more binding sites are exposed, a chelation reaction with ferric salt can be carried out to obtain a novel iron supplement agent polypeptide iron chelate, the bioavailability is high, meanwhile, a calcium supplement is supplemented, calcium ions can be combined with carboxyl of soybean peptide, and the calcium supplement effect is good. Meanwhile, the solubility and the heat stability are improved, and the limitations that the calcium content and the iron content of a traditional bean beverage are low and the bean beverage inhibits calcium and iron absorption are broken through.

The invention belongs to the technical field of biological medicine. The invention relates to a collagen peptide, in particular to collagen peptide and preparation and application of an iron chelate thereof. The preparation method of the collagen peptide comprises the following steps: step A, cleaning fish skin without fish scales, cutting the fish skin into pieces, sequentially performing degreasing and impurity protein removal, adding sterile water into the fish skin, and performing pulping so as to obtain slurry; and step B, adding protease and 1-10w / w% sea buckthorn pomace fermentation liquor into the pulp, carrying out enzymolysis for 60-180 minutes, centrifuging, taking supernate, and carrying out ultrafiltration to obtain the collagen peptide. The collagen peptide with high Fe < 2 + > chelating activity is obtained from the tilapia skin by adopting a mode of sea-buckthorn fermentation liquor assisted enzymolysis, and the raw materials adopted by the whole process are all from agricultural processing byproducts, so that the method is more green and efficient. The invention further provides a collagen peptide-Fe conjugate, and the collagen peptide-Fe conjugate has good stability and is wide in application.

The invention relates to a pyrite autotrophic denitrification system and process for sewage treatment, and the system comprises a denitrification tank and an electrochemical system capable of applying an electric field into the denitrification tank; a composite filler layer is laid in the denitrification tank, and the composite filler layer comprises a porous filter material modified by pyrite and ferric iron chelate; the porous filter material can slowly release ferric iron chelate; autotrophic denitrification microorganisms are inoculated in the composite filler layer; after nitrogen-containing wastewater is introduced into the denitrification tank, the electrochemical system can intermittently provide an external electric field for the denitrification tank, so that the oxidation-reduction potential in the denitrification tank is kept at + 200 to + 250 mV in a staged manner; the external electric field can drive the pyrite to be dissolved; meanwhile, the slow-released ferric iron chelate can promote the dissolution of the pyrite. The method has the beneficial effect that nitrate and nitrite in the low-carbon-nitrogen-ratio wastewater are efficiently and stably removed.