103 results about "Amino acid solution" patented technology

The invention relates to the technical field of carbon black, in particular to a preparation process of high-adsorbability carbon black, which comprises the following steps: performing pore-forming treatment on carbon black to obtain a porous carbon black material, then treating the porous carbon black material with a first mixed amino acid solution to obtain a carbon black material loaded with a first mixed amino acid adsorption layer, and drying the carbon black material to obtain the high-adsorbability carbon black. And treating the carbon black material with a second mixed amino acid solution to obtain a carbon black material loaded with a second mixed amino acid adsorption layer, and treating the carbon black material loaded with mixed amino acids with laccase and tyrosinase. The carbon black product obtained by the preparation process has high adsorbability, and is used for treating metal ions in wastewater, so that the removal rate of the metal ions is greatly improved.

The invention relates to the technical field of agricultural fertilizer preparation, and discloses a preparation method of a water-soluble fertilizer rich in various active amino acids, which comprises the following steps: S1, preparing an amino acid solution: dissolving various free amino acids or polypeptides in a buffer solution to form an amino acid precursor liquid; s2, constructing a nutrition core layer: adding one or more types of soluble trace element salts and a gelation auxiliary agent into the amino acid precursor liquid to form gelatinous particles; s3, forming an intermediate response layer: coating the core particles with chitosan and phospholipid to form a bimolecular membrane structure. The stability of the particle structure is improved through low-temperature crosslinking and bi-component gelation, and quick response and continuous controlled release in a weak acid environment are realized by combining an intermediate response membrane and an outer controlled release shell layer; by adopting a structure-function integrated design, the suspension property and the dispersity are remarkably improved, and the multi-crop and multi-period precise fertilization requirements are met.

The invention provides a wide pH applicable multi-biomolecule detection MOF probe, a preparation method, a detection method and application, the probe is an MIL-53 (Fe) (at) AA (at) EZ probe, and comprises a metal organic framework MIL-53 (Fe), amino acid and enzyme; the preparation method comprises the following steps: weighing terephthalic acid and ferric chloride hexahydrate, adding into N, N-dimethylformamide, mixing and stirring, pouring the mixed solution into a stainless steel autoclave, heating and reacting, naturally cooling to room temperature, centrifugally separating a product, and washing with N, N-dimethylformamide and absolute ethyl alcohol to obtain the metal organic framework MIL-53 (Fe). The preparation method comprises the following steps: mixing a metal organic framework MIL-53 (Fe) with an amino acid solution, and carrying out ultrasonic treatment and stirring to obtain an MIL-53 (Fe) coated AA solution; the method comprises the following steps: dissolving enzyme in an MIL-53 (Fe) (at) AA solution, uniformly mixing, stirring, centrifugally separating a product, taking precipitate, and drying in vacuum to obtain the MIL-53 (Fe) (at) AA (at) EZ probe. The pH application range is wide, one-step detection can be achieved, and the method has the advantages of being rapid in reaction, high in sensitivity, low in detection limit and easy and convenient to operate.

The invention relates to the technical field of water-soluble fertilizers, in particular to an amino acid water-soluble fertilizer and a preparation method thereof. The amino acid water-soluble fertilizer is prepared from the following raw materials in parts by weight: 60-80 parts of an amino acid solution, 20-30 parts of a nitrogen-phosphorus-potassium fertilizer, 6-10 parts of filler, 4-6 parts of a fermentation material, 2-4 parts of brown sugar, 2-4 parts of ethylenediaminetetraacetic acid ferric sodium salt and 0.6-0.8 part of a microbial agent. According to the amino acid water-soluble fertilizer, the filler is added in the preparation process of the amino acid water-soluble fertilizer, after balsa wood is soaked with sodium hydroxide, lignin is partially degraded, a honeycomb-shaped porous structure is formed, the purpose of increasing the specific surface area is achieved, and the effect of adsorbing nitrogen and potassium ions can be achieved; and after the microbial inoculum is inoculated, mycelia are planted in pores of the filler and secrete exopolysaccharide to wrap fertilizer particles, so that the effect of reducing leaching loss is achieved, the retention time of the fertilizer in soil is delayed, and the loss rate of the fertilizer is effectively reduced.

The invention relates to an amino acid-mediated coal-based solid waste negative carbon filling material and a preparation method thereof, and the method comprises the following steps: adding an amino acid aqueous solution as a fly ash activator and fly ash into a first-section mineralization reaction kettle, introducing CO2 to carry out mineralization reaction, separating slurry obtained by the first-section mineralization reaction to obtain fly ash mineralization residues, and adding the fly ash mineralization residues into the first-section mineralization reaction kettle; the filtrate is recovered to the first-section mineralization reaction kettle for cyclic utilization; adding the coal ash mineralization residues, coal gangue, cement, NaOH, glucose and water into a second-stage mineralization reaction kettle, and introducing CO2 gas for mineralization reaction to obtain the negative carbon filling material. The negative carbon filling material with high carbon sequestration amount and high solid waste mixing amount is prepared through two-stage mineralization reaction, and the material has good fluidity before solidification and certain compressive strength after solidification, and can meet the use requirements of mine filling; wherein the amino acid solution can play a role in leaching Ca < 2 + > / Mg < 2 + > ions in the fly ash, the transfer of protons and CO2 is enhanced, and the carbon sequestration effect is remarkable.

The invention provides composite cosmetic powder with water resistance and skin fitness and a preparation method thereof.The composite powder comprises titanium dioxide, amino acid, natural vegetable oil and synthetic grease, the preparation method comprises the steps that firstly, titanium dioxide powder is added into deionized water to be prepared into 40% aqueous dispersion, an amino acid solution is added to form reaction liquid, and the reaction liquid is added into the deionized water; adjusting the pH value of the reaction liquid to 7-8 so as to coat the hard amino acid; aging, filtering, washing, drying and crushing the reaction liquid to obtain composite modified titanium dioxide powder; adding the composite modified titanium dioxide powder into a high-speed mixer, and sequentially adding synthetic grease and natural vegetable oil along with the operation of the mixer; the composite cosmetic powder is obtained through drying and smashing, and the powder prepared through the proportion and the method has excellent adhesive force and spreadability, proper covering power, a good soft coke effect, prominent water resistance and water resistance and a good makeup maintaining effect.

The invention provides a preparation method of high-specific-surface-area silver particles for low-temperature sintered silver paste, and belongs to the technical field of conductive materials, and the preparation method comprises the following steps: adding ammonia water into a hydrazine hydrate solution with the molar concentration of 1.60-6.0 mol / L until the pH value of the hydrazine hydrate solution is 10-13; the method comprises the following steps: preparing an alpha-amino acid aqueous solution with the molar concentration of 0.012-0.048 mol / L at the temperature of 35-45 DEG C; the preparation method comprises the following steps: dropwise adding a hydrazine hydrate solution and a silver nitrate solution into an alpha-amino acid solution at the same time within 8-12min, stirring, heating, adding a sodium hydroxide solution to adjust the pH value of a reaction solution to 11-13, continuously stirring, aging, separating, washing and drying to obtain the silver particles with high specific surface area. On the premise of ensuring the conductivity of the high-specific-surface-area silver particles, the particle size and the specific surface area of the silver particles are controllable, the requirement for the stability of the silver powder serving as the conductive filler is met, and the yield is high.

The invention discloses a natural gas hydrate generation accelerant containing amino acid and nano calcium carbonate as well as a preparation method and application of the natural gas hydrate generation accelerant, and belongs to the technical field of natural gas hydrates. The problems of low natural gas hydrate forming rate, low gas storage density, low natural gas recovery efficiency, poor environmental protection property and the like in the prior art are solved. The accelerant is obtained by taking a hydrophobic amino acid solution as a base solution, adding nano calcium carbonate into the base solution and adjusting or not adjusting the pH value. By regulating and controlling the type and the concentration of a base solution in the accelerant, the hydrate formation rate and the gas storage density are improved, and the induction time of hydrate generation is shortened; nanoparticles in the accelerant are small in particle size and large in specific surface area, so that disturbance and convective heat transfer of the accelerant are enhanced; in addition, the chemical components of the nanoparticles in the accelerant and the main component of the seabed sediment with a large amount of natural gas hydrate in the nature are calcium carbonate, the environmental risk is reduced, and the calcium carbonate and hydrophobic amino acid are wide in source and environmentally friendly.

The invention relates to the technical field of production of amino chemical products, in particular to a safety production process of amino chemical products, which comprises a bottom plate, a stirring mechanism and a driving unit. The amino acid solution is heated at different positions inside and outside the solution at the same time, so that the amino acid solution is uniformly heated, the evaporation and concentration speed of the amino acid solution is increased, and the time consumed for solution evaporation is shortened; the evaporation and concentration of the amino acid solution are more uniform, the problem that the product quality is reduced due to inconsistent crystallization of amino acid is avoided, meanwhile, the added seed crystals are uniformly distributed in the amino acid solution through the stirring mechanism, and the problem that the crystallization efficiency of the amino acid is lower due to non-uniform distribution of the seed crystals is avoided.

The invention provides a stabilizer for a compound amino acid injection, the compound amino acid injection containing the stabilizer and a preparation method of the compound amino acid injection. The stabilizer is composed of cysteine and cystine according to a weight ratio of (5-80): 1. The compound amino acid injection comprises the stabilizer and amino acid components. The preparation method of the compound amino acid injection comprises the following steps: preparing a first amino acid solution under a nitrogen protection condition; adjusting the pH value of the first amino acid solution to be neutral, adding cysteine and cystine, dissolving, and adding the balance of water for injection to obtain a second amino acid solution; and sterilizing the second amino acid solution to obtain the compound amino acid injection. According to the invention, cysteine and cystine are adopted as stabilizers of the compound amino acid injection, so that the purpose of stabilizing other amino acid impurities is achieved, and the safety is high.

The invention discloses a directional fermentation method for manifesting fragrance of cigar tobacco leaves, and belongs to the technical field of cigar processing. The directional fermentation method comprises the step of spraying an amino acid solution to the cigar tobacco leaves for fermentation. Experiments prove that the sensory quality of the cigar tobacco leaves treated by the directional fermentation method provided by the invention is obviously improved. Meanwhile, the sweet feeling and the mellow feeling are obviously improved, the irritation, the offensive odor and the protein odor are greatly reduced, and the combustibility is improved. Meanwhile, chemical components in the tobacco leaves are more coordinated, the content of neutral aroma substances is increased, and the main effects are that the potassium-chlorine ratio is obviously increased, the nicotine content is reduced, and the contents of carotenoid degradation products and neophytadiene are obviously increased.

The invention relates to the technical field of carbon black, in particular to a production process for improving conductivity of carbon black, which comprises the following steps: activating carbon black with carbon dioxide, then treating with nitric acid to obtain a porous carbon black material, treating the porous carbon black material with a mixed amino acid solution to obtain a carbon black material loaded with a mixed amino acid adsorption layer; then adding a silver nitrate solution, stirring and mixing, dropwise adding a sodium borohydride solution, controlling the reaction temperature and pH, and filtering, washing and drying after the reaction is finished, so as to obtain a high-conductivity carbon black product. By adopting the production process, the conductivity of the carbon black can be greatly improved.

The invention discloses modified activated carbon for indoor formaldehyde adsorption and a preparation method thereof. The method comprises the following steps: 1) preparing an amino acid solution; 2) dipping the activated carbon in an amino acid solution, carrying out ultrasonic oscillation for a certain time, and dipping for a preset time; 3) drying the impregnated activated carbon in a drying box; and 4) placing the dried activated carbon in a tubular furnace filled with shielding gas for high-temperature activation for 2-10 h. The high-temperature activation in the protective gas is beneficial to formation of micropores of the activated carbon, avoids the influence of air or oxygen on amino acid in the heating process, adsorbs the amino acid and derivatives thereof into the micropores formed by the activated carbon, greatly improves polarity modification of the activated carbon, increases effective oxygen-containing functional groups on the surface of the activated carbon, and improves the adsorption capacity of the activated carbon. The adsorption capacity of the activated carbon on formaldehyde polar molecules is enhanced, and the chemical adsorption effect on formaldehyde can be further promoted on the basis of physical adsorption of the activated carbon.

The invention provides a ginseng product with high ginseng total saponin content and a preparation method thereof, and the preparation method comprises the following steps: firstly providing cooked ginseng, namely, steaming fresh ginseng so as to improve the rare saponin content in the cooked ginseng; meanwhile, the cooked ginseng is further soaked and extracted in a mixed amino acid solution containing glutamic acid, lysine and serine, so that the content of total ginsenoside and the content of rare ginsenoside in the cooked ginseng can be further increased. Through testing, the content of total ginsenoside in the ginseng product obtained by the preparation method is more than 30 mg / g; the content of rare ginsenoside Rk1 is greater than 1.30 mg / g; the content of rare ginsenoside Rg3 in the ginseng product is greater than 1.20 mg / g; the content of rare ginsenoside Rg5 in the ginseng product is greater than 0.50 mg / g.

The invention relates to a method for increasing folic acid content of wheat malt seedlings through ultrasonic field and amino acid solution treatment, which belongs to the technical field of agricultural food biology and is characterized in that wheat grains with high germination rate are used as raw materials, and the wheat malt seedlings are cultivated through soaking disinfection, amino acid solution dipping and ultrasonic field treatment and regulation and control of illumination, temperature, humidity and CO2 concentration. And drying and crushing to obtain the wheat malt seedling powder rich in folic acid. According to the method disclosed by the invention, the permeability of cell membranes is enhanced by utilizing an ultrasonic cavitation effect, folic acid precursor absorption and synthetase activation are promoted, the folic acid content in the wheat malt seedlings is effectively increased, and the wheat malt seedling powder with the folic acid content of 450-550mu g / 100g is obtained.

The invention relates to the technical field of iron-supplementing compounds, in particular to a slow-release iron-supplementing compound and a preparation method thereof. The preparation method comprises the following steps: dispersing ferric salt in a solvent to obtain a dispersion solution, and adding amino acid into the dispersion solution to obtain an amino acid solution; the preparation method comprises the following steps: mixing lecithin and polyol, homogenizing to obtain an emulsion, dropwise adding chitosan into the emulsion, and stirring to obtain a polysaccharide solution; dropwise adding the amino acid solution into the polysaccharide solution, stirring, and adding an inorganic filler to obtain a composite solution; and centrifuging the composite solution, and collecting the precipitate to obtain the slow-release iron-supplementing compound. According to the invention, the bioavailability of iron can be improved, and excessive release of free iron ions is avoided.

The utility model relates to solid-liquid separation membrane equipment for extracting amino acid by a hydrolysis method, which comprises a rack, the washing assembly comprises sliding rails symmetrically and fixedly arranged on the two sides of the rack, a sliding block capable of moving along the sliding rails is installed on the sliding rails, a water storage tank is fixedly arranged on the other side face of the sliding block, and a plurality of water supply pipes are fixedly installed on the top face of the water storage tank; a spraying head over against a plate frame of the plate-and-frame filter press is fixedly arranged on the inner circumferential surface of the water supply pipe; the moving assembly comprises racks symmetrically and fixedly arranged on the two sides of the rack, a rotary power mechanism is installed on the side wall of one water storage tank, and a driven gear shaft is installed on the side wall of the other water storage tank; water flow flushing is adopted to replace a traditional filter cake pressing link, tedious steps such as air inflation, pressure maintaining and plate frame pulling are omitted, time consumed for solid-liquid separation of the same batch of amino acid solutions is greatly shortened, the production rhythm is accelerated, and the overall production efficiency is improved.

The invention discloses a preparation method of a cobalt-based chiral enantiomer superparticle and the cobalt-based chiral enantiomer superparticle, and the preparation method comprises the following steps: stirring a mixture containing a cobalt source solution and an amino acid solution for reaction under an alkaline condition to obtain the cobalt-based chiral enantiomer superparticle, amino acid in the amino acid solution is L-cystine and / or D-cystine. The cobalt-based superstructure particles synthesized by the method have good chiral optical activity in a visible light region and a near-infrared light region, and have important guiding significance for preparing chiral enantiomer structure materials and exploring an assembly mechanism generated by a chiral ligand-induced chiral structure.

The invention relates to the technical field of carbon black, in particular to a preparation process of high-dispersity carbon black, which comprises the following steps: adding a first mixed amino acid solution into carbon black powder with the particle size of 15-20 mu m, heating, ultrasonically dispersing, adding a first mixed dispersing agent, and uniformly stirring; adding a second mixed amino acid solution into a material obtained after microwave treatment and grinding treatment, heating, performing ultrasonic dispersion, adding a second mixed dispersing agent, continuing microwave treatment and grinding treatment, and drying to obtain a high-dispersity carbon black product. Carbon black powder is treated through a first mixed amino acid solution and a first mixed dispersing agent, so that a first wrapping layer is formed on the surface of the carbon black powder, and then the carbon black powder is treated through a second mixed amino acid solution and a second mixed dispersing agent, so that a second wrapping layer is formed on the surface of the carbon black powder; each carbon black particle contains double wrapping layers, and the first wrapping layer and the second wrapping layer can prevent collision and agglomeration among the carbon black particles, so that the dispersity of the carbon black is greatly improved.

The invention discloses a method for preparing iron phosphate based on deep copper removal of waste lithium iron phosphate battery powder. The method comprises the following steps: firstly, mixing the waste lithium iron phosphate battery powder with an amino acid solution, and carrying out complex reaction to remove copper; and then on the basis of copper removal, the iron phosphate is prepared through the procedures of acid leaching, impurity removal, oxidation, aging and calcination. According to the copper removal method, the copper element in the waste lithium iron phosphate battery powder can be fully removed, and meanwhile the loss of other elements is reduced; the iron phosphate prepared on the basis of the method is not only low in copper content, but also more uniform in particle and high in conductivity.

The present invention relates to glucose solutions for parenteral administration comprising glucose and a pharmaceutically acceptable form of iron, as well as to containers comprising, in separate chambers, said glucose solutions and a lipid emulsion for parenteral administration and / or an amino acid solution for parenteral administration.

The utility model discloses a spray drying device for amino acid processing, which comprises a drying box, two sides of the drying box are respectively provided with a heating tank and a tail gas treatment box, a first guide pipe is arranged between the drying box and the heating tank, and a second guide pipe is arranged between the drying box and the tail gas treatment box. The top of the drying box is provided with a pipeline which is sequentially connected with a heater and a fan. According to the utility model, an amino acid solution entering the drying box is fully heated in advance, so that the amino acid atomized by the spray head is vaporized and dried under the action of the heater and the fan, and is conveyed to the screen which reciprocates up and down, so that the amino acid solution is fully heated, and the moisture is completely evaporated; meanwhile, amino acid finished products are screened, and tail gas is subjected to secondary purification, so that the discharged tail gas does not pollute the environment.

This invention relates to a dual-mode chiral sensing platform, its preparation method, and its application for identifying amino acid enantiomers, belonging to the field of electrochemical sensing technology. The preparation method includes the following steps: preparing an MXene-gold nanoparticle-N-acetyl-L-cysteine ​​chiral solution; preparing an MXene-gold nanoparticle-N-acetyl-L-cysteine / L(D)-amino acid solution; preparing an MXene-gold nanoparticle-N-acetyl-L-cysteine ​​modified electrode; electrochemical chiral recognition of amino acid enantiomers; and temperature-based chiral recognition of amino acid enantiomers. This invention utilizes MXene, a two-dimensional nanomaterial with excellent conductivity and photothermal conversion capabilities, as a carrier to in-situ load gold nanoparticles. N-acetyl-L-cysteine ​​containing a thiol group at the end is captured through Au-S bonds. This chiral material can achieve chiral recognition of amino acid enantiomers through both electrochemical and temperature-based chiral sensing modes.

The present invention relates to the technical field of carbon black, and in particular to a preparation process of highly dispersible carbon black, comprising the following contents: adding a first mixed amino acid solution to a carbon black powder with a particle size of 15-20 μm, heating, ultrasonically dispersing, and then adding a first mixed dispersant, adding a second mixed amino acid solution to the material obtained after microwave treatment and grinding treatment, heating, ultrasonically dispersing, and then adding a second mixed dispersant, continuing microwave treatment, grinding treatment, and drying to obtain a highly dispersible carbon black product. The carbon black powder is treated with the first mixed amino acid solution and the first mixed dispersant so that a first coating layer is formed on the surface of the carbon black powder, and then treated with the second mixed amino acid solution and the second mixed dispersant so that a second coating layer is formed on the surface of the carbon black powder; each carbon black particle contains a double coating layer, and the first coating layer and the second coating layer can hinder the collision and condensation between the carbon black particles, thereby greatly improving the dispersibility of the carbon black.

The invention relates to the field of agricultural planting, and provides nano-selenium as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, mixing a selenite solution, a polysaccharide solution and an amino acid solution, and carrying out first reaction to obtain a mixed solution; s2, mixing the mixed solution with a reducing agent solution, and carrying out a second reaction to obtain nano-selenium; the molar ratio of selenite in the selenite solution to polysaccharide in the polysaccharide solution is (1-5): 1; the molar ratio of a reducing agent in the reducing agent solution to selenite in the selenite solution is (2-6): 1. When the nano-selenium formed based on the preparation method is applied to crop planting, the selenium enrichment efficiency and the organic selenium conversion efficiency can be remarkably improved, after the nano-selenium is sprayed to crop leaf surfaces, crops can efficiently absorb selenium elements and convert the selenium elements into organic selenium, meanwhile, the effects of reducing cadmium and increasing the yield are achieved, and the selenium content is reduced. A safe and efficient novel selenium fertilizer solution is provided for selenium-rich functional agriculture, and the application prospect is wide.

The invention discloses an electrochemical biological chiral sensor based on a gold and silver nanostar composite material. The electrochemical biological chiral sensor comprises an electrode substrate and the gold and silver nanostar composite material modified on the electrode substrate, the gold and silver nanostar composite material is a composite material with a gold nanostar material as a core and silver as a shell. The invention further discloses a preparation method of the electrochemical bio-chiral sensor and a method for identifying amino acid enantiomers by adopting the electrochemical bio-chiral sensor. After the electrochemical biological chiral sensor provided by the invention is incubated in different chiral amino acid solutions, the measured redox peak values are different, and by comparing the redox peak values of the to-be-detected amino acid solution and the same amino acid D-type and L-type enantiomers, the amino acid in the to-be-detected solution can be identified to be D-type, L-type or mixed type.

This utility model relates to the field of rapeseed oil production technology, specifically to a quantity control device for adding amino acid ingredients in rapeseed oil production. It includes a storage cylinder with a slidingly fitted pusher inside, which divides the storage cylinder into a liquid chamber and a gas chamber from bottom to top. Multiple discharge nozzles are located at the bottom of the storage cylinder, each with a discharge hole in the center, connected to the liquid chamber. Air vents are located on the top wall of the storage cylinder, connected to the gas chamber. An air pump is located on one side of the storage cylinder, connected to the air vents via a pipe, on which a volumetric flow meter is installed. The device also includes a microprocessor, with the air pump and volumetric flow meter electrically connected to it. This utility model solves the technical problem in the prior art where the high viscosity of the amino acid solution causes it to easily adhere to the conveying pipe, resulting in a large deviation between the actual and set amount of amino acid added.

The application discloses a tobacco extract preparation method, which comprises the following steps: (1) one-time feeding: preparing a carbonated salt-amino acid mixed aqueous solution, uniformly applying the mixed aqueous solution to tobacco raw materials, and standing at room temperature; (2) drying: performing heating treatment on the tobacco raw materials after feeding, and drying; (3) secondary feeding: uniformly applying a polyol to the dried tobacco raw materials; (4) extrusion: performing extrusion and puffing treatment on the tobacco raw materials after feeding, and obtaining treated tobacco raw materials; and (5) extraction: performing extraction and separation on the treated tobacco raw materials, and obtaining a tobacco extract. The carbonated salt-amino acid solution can improve feeding uniformity, improve the pH of the system to reduce nicotine, drying is beneficial to subsequent reactions, the polyol improves material fluidity and prevents extrusion die blockage, extrusion and puffing high-temperature and high-pressure degrade macromolecules, and the tobacco aroma is improved. The extract can be used for heat cigarettes, the aroma is richer, and the odor and irritability are obviously reduced.

A method of producing an adeno-associated virus (AAV) includes separating an adeno-associated virus (AAV), which is bonded to an affinity carrier, from the affinity carrier using an amino acid-containing solution of pH 3 or higher and PH 7 or lower.

The invention discloses an organic water-soluble fertilizer for improving plant immunity and a preparation method thereof, and relates to the technical field of plant fertilizers. The fertilizer comprises the following components: keratin hydrolyzed amino acid liquid, a sugar alcohol calcium solution, disodium octaborate tetrahydrate, a glycine boric acid compound, zinc sulfate heptahydrate, sodium molybdate dihydrate, an echinacea extract, hydroxypropyl-beta-cyclodextrin, chitosan oligosaccharide, sodium alginate and polyglutamic acid. The preparation method comprises the following steps: firstly, inclusion of an echinacea purpurea extract with hydroxypropyl-beta-cyclodextrin to form an echinacea purpurea-cyclodextrin mixed solution; then, zinc, molybdenum and the keratin hydrolysis amino acid liquid are chelated step by step, and a Zn-Mo-amino acid compound is formed; sequentially adding sugar alcohol calcium and a composite boron source, finally mixing with a colloidal network constructed by chitosan oligosaccharide, sodium alginate and the like, adjusting the pH value, and then homogenizing and filtering. Through organic chelation and molecular inclusion technologies, the immunologic function and stability are improved, and the disease incidence rate is effectively reduced.