36 results about "Chelated calcium" patented technology

The invention relates to the technical field of concrete, and particularly discloses super-retarded concrete for an ultra-large pile and a preparation method of the super-retarded concrete. The super-retarding concrete for the ultra-large pile is prepared from the following raw materials in parts by mass: 320 to 400 parts of a cementing material, 1820 to 1960 parts of aggregate, 20 to 28 parts of an inorganic-organic hybrid retarding reinforcing agent, 7.2 to 11.6 parts of a polycarboxylate superplasticizer and 85 to 98 parts of water, the inorganic-organic hybrid delayed coagulation enhancer is prepared by carrying out in-situ free radical polymerization reaction on a hydroxyl acrylate monomer, acrylamide and nano silicon dioxide. According to the inorganic-organic hybrid retarding reinforcing agent, a hybrid substance is formed through a chemical bond, an organic phase is chelated with calcium ions to realize retarding and does not excessively inhibit cement particles, inorganic phase nano silicon dioxide has no agglomeration risk, gaps are filled, a stable product is generated to resist alkali erosion, and the super retarding performance and the long-term strength of concrete are both considered; and the service life of the ultra-large pile is prolonged.

The invention discloses a microbial agent for improving the yield and quality of strawberries and a preparation method and application thereof, and belongs to the technical field of microorganisms. The microbial agent comprises the following raw materials in parts by weight: 40-50 parts of a compound microbial agent, 0.3-0.5 part of xanthan gum, 1.5-2 parts of glycerol, 4-5 parts of a citric acid-sodium citrate buffer solution, 1-1.5 parts of potassium humate, 0.3-0.5 part of monopotassium phosphate, 0.2-0.3 part of chelated calcium magnesium and the balance of water, wherein the total parts by weight of the raw materials are 100; the compound microbial agent is prepared from arthrobacter Xinjiang, linear Prussella bursa-pastoris and bacillus coagulans. The microbial agent disclosed by the invention can be used for effectively preventing and treating strawberry diseases, including root rot, fusarium wilt, gray mold and anthracnose; through the synergistic effects of hormone secretion, nutrient activation, disease inhibition and the like, the microbial agent comprehensively promotes root development and nutrient absorption of strawberry plants, promotes strawberry growth, remarkably improves the strawberry yield and fruit quality, and meanwhile remarkably reduces the strawberry storage rotting rate.

The invention discloses an easily absorbable organic calcium powder containing mineral elements and a preparation process thereof, and the raw materials comprise, by weight, 50-70 parts of an organic calcium source, 20-30 parts of a plant protein source, 5-10 parts of a polybasic amino acid chelate, 0.01-0.03 part of vitamin D3, 1-3 parts of trace mineral elements, 0.5-1.5 parts of compound protease, 0.1-0.3 part of a food-grade surfactant, and 100-150 parts of deionized water. The invention relates to the technical field of nutritional supplements. According to the mineral element-containing easy-to-absorb organic calcium powder and the preparation process, vegetable protein is converted into amino acid through biological enzymolysis, the amino acid and calcium carbonate are subjected to a chelation reaction to generate amino acid chelated calcium, and compared with traditional organic calcium, chelated calcium is more easily absorbed by human intestinal tracts; meanwhile, calcium, magnesium and phosphorus are synergistically matched, magnesium can activate vitamin D3, the vitamin D3 further promotes absorption of calcium, phosphorus and calcium form a reasonable proportion, deposition of calcium in bones is enhanced, and calcium ions can be absorbed in intestinal tracts without depending on gastric acid by adopting a bicyclic stable chelating structure.

This utility model discloses a waste liquid recovery device for amino acid chelated calcium production, relating to the technical field of waste liquid recovery devices. To address the problem that existing technologies often use filter cartridges to separate wastewater from waste materials in amino acid chelated calcium production waste liquid containing a large amount of powdery impurities, the filter cartridges require timely replacement after prolonged use, which is complex and interrupts filtration, affecting production efficiency. The multi-layer filtration mechanism includes a first filter cartridge, a second filter cartridge, and a third filter cartridge distributed in a specific manner. A first inlet pipe is fixedly connected to the input end of the first filter cartridge, a second inlet pipe is fixedly connected to the input end of the second filter cartridge, and a third inlet pipe is fixedly connected to the input end of the third filter cartridge. The recovery tank includes a tank body and a hopper. A drain pipe is fixedly installed on one side of the tank body, and a water pump is connected between the drain pipe and the first inlet pipe. A particle size sensor is installed on the tank body near the hopper.

The invention discloses a preparation method of a high-absorptivity calcium supplement of vitamin D3 (VD3) and casein phosphopeptide chelated calcium (CPP-Ca), which comprises the following steps: firstly, dissolving casein phosphopeptide (CPP) in ultrapure water, adding calcium chloride, adjusting the pH value, stirring and reacting at a certain temperature to generate CPP-Ca, then precipitating by using ethanol, washing for multiple times to remove free calcium ions, and drying to obtain the high-absorptivity calcium supplement of vitamin D3 (VD3) and casein phosphopeptide chelated calcium (CPP-Ca). Centrifuging, collecting the precipitate, and freeze-drying to obtain purified CPP-Ca; the preparation method comprises the following steps: preparing CPP-Ca into a solution, adjusting the pH value, dropwise adding VD3 dissolved in ethanol into the solution, stirring and mixing at room temperature under a certain concentration to finally form the VD3 and CPP-Ca compound, and the compound prepared by the method can significantly promote calcium absorption and effectively improve the stability of VD3 and CPP.

The invention discloses a citric acid-assisted carbonized steel slag-based cementing material as well as a preparation method and application thereof, the preparation method comprises the following steps: mixing and stirring converter steel slag powder and 0.05-0.10 mol / L of citric acid solution, and dissolving out through chelated calcium and magnesium ions; then high-concentration CO2 is introduced for wet carbonization, so that ions are converted into calcium carbonate; carrying out solid-liquid separation, ethanol replacement and drying to obtain a cementing material; according to the method, the carbonization process is regulated and controlled through citric acid, mixed crystal calcium carbonate with calcite as a main component and vaterite as an accompanying component is generated, and the carbonization efficiency and the product activity are remarkably improved. The obtained material has a more compact microstructure, and the accumulated pore volume is reduced by more than 40% compared with the original steel slag; when 30% by mass of the cement is replaced to prepare mortar, the compressive strength of the mortar in 3 days and 28 days is not lower than 31.0 MPa and 45.0 MPa respectively, which are obviously superior to those of the traditional treated steel slag. The method disclosed by the invention is simple in process, green and economical, and provides an effective path for realizing high value-added utilization of the steel slag and carbon neutralization targets.

The invention provides a purification method of high-calcium-magnesium ferrous sulfate and a ferrous sulfate product, and the purification method of the high-calcium-magnesium ferrous sulfate comprises the following steps: S1, preparing the high-calcium-magnesium ferrous sulfate into a supersaturated high-calcium-magnesium ferrous sulfate solution; s2, adjusting the pH value of the supersaturated high-calcium-magnesium ferrous sulfate solution to 1.5-2.5 to obtain an acidified supersaturated high-calcium-magnesium ferrous sulfate solution; and S3, adding a scale inhibitor into the acidified supersaturated high-calcium-magnesium ferrous sulfate solution, sequentially carrying out cooling crystallization and centrifugal separation, and collecting crystals to obtain ferrous sulfate. According to the method disclosed by the invention, the high-calcium-magnesium ferrous sulfate is subjected to impurity removal by adopting a scale inhibitor chelated calcium and magnesium and a recrystallization method, the obtained ferrous sulfate crystal is high in purity, more than 90% of calcium and magnesium can be removed, and the ferrous sulfate can be directly used for synthesizing battery-grade iron phosphate after being dissolved.

The invention discloses high-temperature-resistant hydrolysis-resistant high-performance polyatomic acid as well as a preparation method and application thereof, and belongs to the technical field of chemical oil displacement, the high-temperature-resistant hydrolysis-resistant high-performance polyatomic acid is applied to an oil-displacing agent, can remarkably reduce adsorption loss of the oil-displacing agent and a rock surface, has the capability of chelating calcium and magnesium ions, prevents precipitation reaction from the source, and avoids blockage of fracture-cavity channels and micro-pore channels; a zinc metal framework structure in the prepared high-temperature-resistant hydrolysis-resistant high-performance polyatomic acid has chelating sites, calcium and magnesium ions can be locked in advance and prevented from being combined with hydrophilic groups of a surfactant, it is ensured that the micelle structure is stable, foamability and foam stability are not affected, precipitation reaction is stopped from the source, and the high-temperature-resistant hydrolysis-resistant high-performance polyatomic acid is prepared. Fracture-cavity channels and micro-pore channels are prevented from being blocked; and the negatively-charged sulfonic acid group can form doping on the zinc metal framework, so that the chelating capability on calcium and magnesium ions is improved.

The present application relates to an organic selenium nutrient solution for crops and a preparation method thereof. The nutrient solution comprises, by mass percentage, selenomethionine 0.1-0.5%, complex amino acids 2.0-5.0%, potassium humate 1.0-3.0%, plant extracts 0.5-1.0%, EDTA chelated calcium, magnesium and zinc 0.05-0.5%, potassium sorbate 0.05-0.2%, and purified water as the remainder. Preferably, the selenomethionine is L-type selenomethionine with a three-layer coating, the inner layer of which is formed by cross-linking chitosan and citric acid, the middle layer is hydroxypropyl methyl cellulose, and the outer layer is a sodium alginate-gelatin matrix cross-linked by Ca 2+ / Zn 2+ complex ions. The preparation method comprises adding and chelating each component under specific pH conditions, and stabilizing to form a stable multi-component synergistic system. The nutrient solution has the advantages of high bioavailability, good controlled release performance, high plant absorption efficiency, and strong component stability.

The invention relates to a preparation method of a narrow gadus bone peptide compound and chelated calcium of the narrow gadus bone peptide compound. The method comprises the following steps: by taking a walleye cod processing byproduct fish bone as a raw material, carrying out trypsin preliminary enzymolysis, ultrafiltration and protease K targeted enzymolysis to obtain the walleye cod bone peptide compound. The narrow gadus bone peptide compound comprises one or more active peptides of DFF, DIF, DNAF, DPF and DYF. Chelated calcium can be prepared by using the narrow gadus bone peptide compound or the narrow gadus bone active peptide. Waste resources are fully utilized, high value of low-value products is achieved, environmental pollution is reduced, high economic and social benefits are achieved, and the prepared chelated calcium with the high additional value can be applied to the fields of dietary nutrition, biological medicine products and the like.

The invention relates to the technical field of fertilizers, in particular to a special fertilizer for preventing durian fruit cracking and a preparation method thereof. The special fertilizer is prepared from 5-20 parts of mineral source potassium fulvate, 2-10 parts of compound nucleotide, 5-15 parts of a chitosan seaweed essence organic fertilizer, 10-25 parts of an amino acid-containing water-soluble fertilizer, 0.5-5 parts of a polyphenol compound, 1-3 parts of polyglutamic acid, 5-15 parts of sugar alcohol chelated calcium, 3-4 parts of disodium octoborate tetrahydrate, 4-6 parts of a soil conditioner, 7-13 parts of a potassium source substance, 0.5-1.2 parts of an iron source substance and 4-6 parts of a magnesium source substance. 0.05 to 0.5 part of a copper source substance and 0.3 to 0.8 part of a zinc source substance. The special fertilizer provided by the invention has comprehensive nutrients and is a nutrient complex. By improving the soil environment, improving the absorption and transfer efficiency of the calcium element in the plant body, improving the cell wall strength, the peel toughness and the like, the fruit cracking problem of the durian is improved.

The invention discloses a lemon fresh-keeping method based on calcium-salicylic acid and tea polyphenol-chitosan. The lemon fresh-keeping method comprises the steps of pretreatment before picking, soaking treatment after picking and storage management. 14 days before picking, a compound solution of 0.23 g / L chelated calcium and 2.0 mmol / L salicylic acid is sprayed to lemon fruits; after harvesting, the fruits are soaked in a 2% tea polyphenol and 1% chitosan composite fresh-keeping solution for 3 min, and the fruits are stored at the normal temperature of 25 DEG C after being dried in the shade; through the synergistic treatment, the hardness increase, weight loss rate increase and color deterioration of the lemon fruits can be obviously delayed, relatively high contents of total acids, total phenols, ascorbic acid and flavonoids are maintained, the accumulation of malonaldehyde is inhibited, and the activity of superoxide dismutase, peroxidase and catalase is improved; after the fruits are stored for 40 days, the weight loss rate of the fruits is only 30.37%, the total phenol content is 0.486 mg / mL, the SOD activity is 46.63 U / mL, and the fresh-keeping effect is obviously superior to that of a single treatment group and a control group; the method is simple in process, controllable in cost and high in safety.

The utility model relates to the technical field of chelated calcium production metering, in particular to a metering feeding device for nano amino acid chelated calcium production, which is characterized in that a feeding port is arranged above a reaction kettle, a feeding device support structure is arranged right above the feeding port, the support structure extends to the ground from one side of the reaction kettle, a metering barrel structure is erected at the top end of the support structure, and the metering barrel structure is connected with the reaction kettle. The metering barrel structure comprises a metering barrel, a barrel cover, a material injection pipe, a stirring shaft, a heating sleeve, an electric heating pipe, a discharging pipe and an exhaust pipe, the barrel cover covers the metering barrel, the material injection pipe and the exhaust pipe are inserted into the barrel cover, a flange is arranged at the top end of the metering barrel and connected with the supporting structure, and the stirring shaft is inserted into the center of the metering barrel. A first stirring plate and a second stirring plate are connected to the shaft side of the stirring shaft, a heating sleeve is fixedly arranged outside the metering barrel in a surrounding mode, an electric heating pipe is inserted into the heating sleeve, compared with the prior art, powder can be heated and dried while metering and feeding of the powder are achieved, and the practicability of the device is improved.

The invention relates to the technical field of slow-release fertilizers, in particular to a bottom-application slow-release calcium fertilizer capable of reducing pH value and salt and a preparation method thereof, and the bottom-application slow-release calcium fertilizer comprises a fertilizer core, a slow-release layer and a shell layer from inside to outside; the fertilizer core is prepared from nano suspended calcium, calcium superphosphate, sugar alcohol chelated calcium, mineral source potassium fulvate, silicon-calcium-magnesium mineral powder and gamma-polyglutamic acid; the slow-release layer is prepared from chitosan, sodium alginate, calcium lactate, gamma-polyglutamic acid and bentonite; the shell layer is prepared from starch, clay powder, humic acid powder, microbial powder, an acidic polysaccharide compound, citric acid and glucose powder. Through chemical alkali and salt reduction of the fertilizer core, nutrient controlled release of the slow release layer, microbial enhancement of the shell layer and three-layer synergism, slow release of calcium after bottom application, continuous reduction of soil pH value and salt content, improvement of soil aggregate structure, improvement of soil fertility, promotion of crop root growth and improvement of calcium absorption and utilization rate are realized. The problems of soil alkalization, salinization and crop calcium deficiency are solved.

The invention discloses a preparation method of glycosylated bamboo shoot peptide chelated calcium. Combining the bamboo shoot cleaning solution with the filtrate, carrying out alkali dissolution and acid precipitation, collecting precipitates, dispersing the precipitates in ultrapure water, and carrying out spray drying to obtain bamboo shoot protein powder; taking the bamboo shoot protein, adding alkaline protease, carrying out enzymolysis reaction, and carrying out ultrafiltration and freeze drying; the preparation method comprises the following steps: mixing BSH with six different saccharides, and dissolving in deionized water to prepare a solution; preparing BSH with similar grafting degrees and same time; cooling, filtering, and freeze-drying trapped fluid to obtain a BSH sample; mixing the glycosylated BSH solution with calcium chloride, and adding absolute ethyl alcohol to obtain glycosylated BSH-Capowder; the calcium binding capacity of the bamboo shoot peptide is effectively improved, an experimental basis is provided for development of BSH-Ca and XY-BSH-Ca as calcium supplements and functional peptide additives, the high-value utilization approach of bamboo shoot resources is expanded, and a new thought is provided for research and development of novel efficient calcium supplements.

The present application is generally directed to methods for chelating calcium deposits within calcified blood vessels, as well as methods and compositions for use in regulating various senescence-related inflammatory pathways. Specifically, the present application is directed towards reducing senescent cell accumulation by delivering a nanoparticle comprising a chelating agent to a tissue.

The utility model relates to the technical field of nano amino acid chelated calcium production, in particular to a nano amino acid chelated calcium stirrer with adjustable stirring strength. A nanometer calcium amino acid chelate stirrer comprises a stirring tank, a tank cover is arranged above the stirring tank, a stirring shaft penetrates through the center of the upper portion of the tank cover, the stirring shaft is inserted into the stirring tank, first stirring plates surround the periphery of the stirring shaft, the first stirring plates and second stirring plates are alternately arranged, a limiting ring extends in the tank cover, and a gear ring is arranged at the bottom of the limiting ring in a protruding and hanging mode. A connecting plate is welded below the gear ring, a scraping plate is vertically welded on the connecting plate, the scraping plate is tightly attached to the inner wall of the stirring tank, and a circulating structure is arranged outside the stirring tank. Compared with the prior art, the two mixing mechanisms are arranged, the scraping plate rotates through the first mixing mechanism, materials attached to the inner wall of the stirring machine are scraped off, the materials return to the stirring main body again, and the rotating direction of the scraping plate is opposite to the rotating direction of the stirring shaft.

The application discloses a kind of ascorbic acid chelated calcium magnesium water-soluble fertilizer compatible with phosphate fertilizer and a preparation method thereof.The method comprises adding EDTA accelerator to ascorbic acid calcium magnesium solution to promote reaction until the reaction solution is clear, drying the reaction solution to obtain ascorbic acid chelated calcium magnesium water-soluble fertilizer compatible with phosphate fertilizer.The chelated calcium magnesium prepared by the method has a solubility of greater than or equal to 60 g, and a total calcium magnesium content of greater than or equal to 10%, which meets the technical index requirements of the industry standard NY2266-2012 for water-soluble fertilizer solid products.Meanwhile, due to the synergistic chelation of ascorbic acid and EDTA, a mixed solution obtained by dissolving 1 g of the ascorbic acid chelated calcium magnesium water-soluble fertilizer compatible with phosphate fertilizer, 5 g of potassium dihydrogen phosphate and 100 ml of water can remain clear for more than 8 hours, greatly improving the compatibility with phosphate fertilizer.

The invention provides an animal intestinal immune regulation feed additive and feed, and relates to the technical field of animal feed. The animal intestinal immune regulation feed additive provided by the invention is prepared by drying an additive premixed solution, 100 parts by mass of the additive premix liquid comprise 20-40 parts of a plant source silicon aqueous solution with the mass concentration of 30%-40%, 10-20 parts of fructo-oligosaccharide, 5-10 parts of beta-glucan, 2-5 parts of a tea saponin or plant polyphenol aqueous extract, 10-15 parts of calcium amino acid chelate and the balance of a carrier; the particle size of the plant source silicon element is 0.4 nm. The feed additive is good in stability, high in safety, easy to absorb, suitable for animal feed and health care products, especially suitable for animals in the breeding period and animals sensitive to intestinal tracts, and capable of meeting the requirements of the current animals for efficient absorption type nourishment.

The application relates to the technical field of concrete, and particularly discloses super-delayed-setting concrete for super-large piles and a preparation method thereof. The super-delayed-setting concrete for super-large piles comprises the following raw materials in parts by mass: cementitious material 320-400 parts, aggregate 1820-1960 parts, inorganic-organic hybrid retarding and reinforcing agent 20-28 parts, polycarboxylate water reducing agent 7.2-11.6 parts and water 85-98 parts; the inorganic-organic hybrid retarding and reinforcing agent is prepared through in-situ radical polymerization reaction of hydroxy acrylate monomer, acrylamide and nano silicon dioxide. The inorganic-organic hybrid retarding and reinforcing agent forms a hybrid substance through chemical bonds, the organic phase chelates calcium ions to realize retarding and does not excessively inhibit cement particles, the inorganic phase nano silicon dioxide has no agglomeration risk, fills voids and generates stable products resistant to alkali erosion, and the super-delayed-setting performance and the later strength of the concrete are considered, so that the service life of the super-large pile is prolonged.

The invention discloses a nutritional supplement for pregnant pets and a preparation method of the nutritional supplement. According to the preparation method, after chickpeas are hydrolyzed by protease, GAD enzyme and calcium chloride are added, glutamic acid is induced to be converted into GABA through calcium ions, and meanwhile free amino acid reacts with the calcium ions to generate amino acid chelated calcium; the egg yolk powder and the lactoferrin are utilized to construct a double-emulsion system, so that the GABA is protected from being damaged in advance, the amino acid chelated calcium is slowly released, and the absorption antagonism of mineral substances such as calcium, iron and zinc is reduced. The chicken breast, the chicken liver, the traditional Chinese medicines and other raw materials are chopped, mixed and sterilized to obtain a finished product. The nutritional powder is rich in GABA, soybean isoflavone, Omega-3 fatty acid, vitamin B6, lactoferrin, folic acid and various minerals, can directly or indirectly support progestational hormone secretion and relieve anxiety during pregnancy, meets the requirements of maternal blood replenishing and immunity improving and fetal development nutrition supply, and is suitable for nutrition supplement of pets during pregnancy.

The invention relates to the technical field of feed additive preparation, and discloses a fermentation process for preparing an organic chelated calcium feed additive from inorganic calcium by a microbial conversion method, and the process comprises the following steps: mixing and crushing an inorganic calcium source, a carbon and nitrogen source feed and auxiliary materials to prepare a solid fermentation base material; adding activated composite transformed strain inoculation liquid and adjusting the total moisture content; carrying out aerobic fermentation on the material, and carrying out coordination chelation reaction on organic acid, amino acid and small molecule peptide generated by microbial metabolism and dissociated inorganic calcium to convert into water-soluble organic calcium; and after fermentation, drying with low-temperature hot air, and crushing to obtain an organic calcium product. According to the method, a multi-strain synergistic fermentation system is adopted, acid production, substrate enzymolysis and calcium ion chelation are synchronously completed in the same environment, the conversion efficiency of insoluble inorganic calcium is improved, chemical reagent residues are avoided, and the activity of probiotics and biological metabolic enzymes in the system is effectively reserved.

The invention relates to an inorganic mineral-based waterproof, leveling and decorative integrated material, belongs to the technical field of inorganic mineral-based materials, and realizes integration of waterproof, leveling and decorative functions. The inorganic mineral-based waterproof, leveling and decorative integrated material is prepared from the following components in parts by weight: 25 to 35 parts of white cement, 40 to 50 parts of quartz sand, 3 to 4 parts of a modified compound reinforcing material, 0.2 to 0.4 part of cellulose ether, 0.4 to 1 part of a water reducing agent, 2.5 to 3.5 parts of redispersible latex powder, 0.1 to 0.2 part of a water repellent and 0.5 to 1 part of a de-foaming agent, the preparation method of the modified compound reinforcing material comprises the following steps: firstly epoxidizing nano silicon dioxide and a hydroxyl metal organic framework, then carrying out ring opening to form an alkane and phytic acid structure, and finally chelating calcium and aluminum. Organic ligands for preparing the hydroxyl metal organic framework comprise 2, 5-dihydroxy terephthalic acid and 2-hydroxy terephthalic acid.

The invention relates to the technical field of deep processing of plant source active calcium, in particular to wheat oligopeptide chelated calcium and a preparation method thereof. The invention provides a preparation method of wheat oligopeptide chelated calcium, which comprises the following steps: taking wheat hydrolyzed protein as a raw material, performing enzymolysis on the wheat hydrolyzed protein by using alkaline protease and flavourzyme in sequence, and then performing chelation reaction with calcium chloride to obtain peptide calcium reaction liquid; performing impurity removal on the peptide calcium reaction liquid by using diatomite and perlite combined with plate frame filtration, performing filtration and sterilization by using a microfiltration membrane, and finally performing drying to obtain the wheat oligopeptide chelated calcium. Various detection indexes of the wheat oligopeptide chelated calcium prepared by the method meet related standard requirements, and marketization and industrialization application of the plant source peptide calcium chelate is promoted.

The utility model relates to the technical field of chelated calcium reaction kettles, in particular to a nano amino acid chelated calcium reaction kettle with a temperature control function, which is characterized in that a kettle cover is arranged above a reaction kettle body, a stirring shaft penetrates through the center of the kettle cover, the stirring shaft extends into the reaction kettle body, and a feeding pipe and a liquid inlet pipe are inserted into the kettle cover around the stirring shaft; heating sleeve grooves are annularly formed in the side wall of the reaction kettle body through a mounting plate, a circle of electric heating rods are uniformly inserted into the upper surface of each layer of heating sleeve groove, a sensor is mounted on the side wall of the mounting plate, one end of the sensor is inserted into the reaction kettle body, and a cooling structure is arranged in each heating sleeve groove. Compared with the prior art, the multi-section heating function can be achieved through the electric heating rod, the production efficiency of the nano amino acid chelated calcium is improved, meanwhile, the cooling structure is arranged, when an area is overheated, the temperature in the heating sleeve groove can be reduced by introducing cold water into the flow dividing pipe corresponding to the heating sleeve groove, and the heating effect of the nano amino acid chelated calcium is improved. The influence of local high temperature on the quality of the chelated calcium is avoided.

The invention discloses a liquid fertilizer for promoting durian expansion and a preparation method thereof, and belongs to the technical field of agricultural fertilizers. The liquid fertilizer is prepared from the following components in mass volume ratio: 450 to 500g / L of potassium pyrophosphate, 60 to 70g / L of ammonium polyphosphate, 2 to 5g / L of benzylamine and gibberellic acid compounding agent, EDTA (Ethylene Diamine Tetraacetic Acid) chelated calcium, EDTA chelated magnesium and the like, and the balance of deionized water. The preparation method comprises the following steps: weighing the raw materials, preparing the basic nutrient solution, adding the medium trace elements and the active components, adding the stabilizer, fixing the volume, filtering, sub-packaging and the like. During application, a mode of combining foliage spraying and root irrigation after dilution is adopted. The formula is high in pertinence, all the components have a synergistic effect, the weight of a single durian fruit can be remarkably increased, the fruit cracking rate is reduced, the fruit sweetness is improved, the components are safe and environmentally friendly, the preparation technology is simple, stability is good, the fertilizer is suitable for large-scale production and durian planting application and popularization, and the planting economic benefits can be effectively increased.

The application discloses a method for preparing water-soluble lignin chelated calcium fertilizer from concentrated black liquor, and belongs to the technical field of chelated fertilizer preparation.The technical points of the application are as follows: based on the hydrophilicity and chelation of small-molecule lignin in the black liquor, CO2 acid precipitation and calcium chloride chelation are used to prepare a new type of environmentally-friendly calcium fertilizer.The main technical points include: the black liquor is concentrated to a solid content of 30-50%, CO2 gas is introduced for acid precipitation reaction under certain conditions, the precipitate is separated by centrifugation, calcium chloride solid is added to the supernatant under stirring until no precipitate is generated, the precipitate is separated by centrifugation, anhydrous ethanol is added to the supernatant at a volume ratio of 1:1, the mixture is uniformly mixed and then centrifuged, the precipitate is washed with 50% ethanol solution and then dried to obtain the water-soluble lignin chelated calcium fertilizer.The application provides a water-soluble lignin chelated calcium fertilizer preparation technology which is simple, efficient, economical and has great industrialization potential, and opens up a new conversion path for conveniently and effectively converting natural high-molecular material lignin into efficient fertilizer.

The present application belongs to the technical field of lignin modification and chelate fertilizer preparation, and particularly relates to a method for preparing water-soluble lignin chelated calcium fertilizer based on iron-manganese double-site catalysts. The present application provides a special iron-manganese double-site catalyst for lignin oxidation modification of water-soluble lignin chelated fertilizer preparation. The catalyst can enhance the hydrophilicity of oxidized lignin and increase the effective chelating sites, thereby facilitating the formation of stable chelate structure with calcium source, so that the yield and calcium content of water-soluble lignin chelated fertilizer can be significantly improved. In addition, in the present application, papermaking black liquor is used as raw material, and functionalization and fertilizerization conversion of lignin can be realized under mild temperature range and controllable pressure oxidation conditions, which greatly improves the added value of waste liquid generated in papermaking, and is conducive to the coordinated development of black liquor resource utilization and functional fertilizer preparation industry.

This invention provides a gel material for hemostasis and promoting healing of the digestive tract mucosa, and its preparation method, belonging to the field of biomedical materials technology. The material consists of two separately packaged solutions: Solution A contains sodium alginate with an amination degree of 0.5-2.0 mmol / g, RGD peptide, quaternized chitosan, growth factors, and indigo carmine; Solution B consists of liposome microspheres encapsulated with pre-chelated calcium ions. This invention achieves controllable cross-linking through a "dual regulation mechanism": modified sodium alginate adjusts the cation capture sensitivity, and liposomes control the ion release rate, allowing the gel formation time to be precisely controlled within 30-60 seconds, solving the needle blockage problem caused by the instantaneous solidification of traditional gels. This gel combines physical support, immediate hemostasis, and long-term healing promotion, and has good biocompatibility, making it particularly suitable for mucosal elevation and postoperative repair in endoscopic submucosal dissection (ESD).

The invention relates to the technical field of bioengineering, and particularly discloses a preparation process of wheat oligopeptide chelated calcium microcapsules. The microcapsule has a molecular weight of 1t; the wheat oligopeptide chelated calcium beta-cyclodextrin is composed of wheat oligopeptide chelated calcium and beta-cyclodextrin, the preparation process comprises the following steps: adding flavourzyme and alkaline protease step by step, and performing ultrasonic intermittent regulation and control to realize efficient enzymolysis; a target peptide fragment is accurately intercepted through two-stage dialysis, and the activity is guaranteed through spray drying; the calcium chelation rate is improved through dynamic pH regulation and control; high-front and low-rear ultrasonic power is combined with a fixed intermittent ratio, and enhanced embedding is carried out under nitrogen protection; and after pre-freezing at-40 DEG C, carrying out segmented heating, analyzing and drying, and curing the microcapsule structure. The composition can be used in the field of functional foods or dietary supplements, and has the advantages of high calcium bioavailability and low gastrointestinal irritation; besides, according to the preparation process, the hydrolysis degree is regulated and controlled through step-by-step enzymolysis, invalid small molecule fragment accumulation caused by excessive hydrolysis is avoided, and the preparation process has the advantage that a high-activity substrate is provided for chelation reaction.