19 results about "Micro-encapsulation" patented technology

The invention relates to the technical field of fertilizers, in particular to a seaweed-containing synergistic monoammonium phosphate fertilizer as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a seaweed extract with beta-cyclodextrin, performing microencapsulation, and performing spray drying to obtain an embedded material; mixing with monoammonium phosphate and polyglutamic acid, and granulating; spraying salt-resistant compound bacteria liquid on the surfaces of the particles; and finally, coating the particles with a chitosan-sodium alginate composite film. According to the prepared synergistic monoammonium phosphate fertilizer finished product, the phosphorus utilization rate of monoammonium phosphate saline-alkali soil can be increased, the phosphorus fixation rate can be greatly reduced, the retention rate of active ingredients of the seaweed extract is greatly increased compared with that in the prior art, the rhizosphere survival rate of salt-tolerant flora is greatly increased, and the salt-tolerant flora, the seaweed extract and monoammonium phosphate cooperate to promote crop yield increase.

The invention relates to an efficient energy supply type laboratory mouse feed which comprises the following components in percentage by weight: 20-40% of corn, 10-30% of wheat, 1-5% of wheat middling, 4-10% of soybean meal, 2-8% of fish meal, 2-6% of chicken meal, 1-10% of soybean hull, 1-5% of soybean oil, 1-5% of lard, 0.5-2% of stone powder, 0.5-1.5% of calcium hydrophosphate, 2-5% of premix, 1-5% of MCT microcapsule powder and 0.5-2% of glutamine. The stability of MCT is improved through a microencapsulation method, the activity of glutamine is reserved through an embedding method, the synergistic effect of MCT microcapsule powder and glutamine is utilized, meanwhile, lard oil and fat raw materials are added, high-temperature steam is used for curing materials in the production process, the fragrance of the feed is further improved, the palatability of the feed is jointly improved, the food intake of laboratory mice is not affected, and the production cost is reduced. The utilization efficiency of the feed is improved; the experimental mouse feed can reduce body fat and improve blood lipid level, can effectively prolong exhaustion time of mice, and is suitable for cultivation and maintenance of special experimental animals such as intestinal injury models and immunodeficiency models.

The invention discloses a concentrated conductive black master batch and a preparation method thereof, and belongs to the technical field of conductive plastics, the concentrated conductive black master batch comprises the following components by mass percentage: a conductive filler, carrier resin, an auxiliary agent and a double-chamber microcapsule, the double-chamber microcapsule comprises: an outer shell material: polyurea (PUA); the inner part diaphragm is a polylactic acid (PLA) and polycaprolactone (PCL) composite membrane; the first chamber is used for packaging epoxy resin and microencapsulated dicyandiamide; and the second chamber is used for packaging liquid metal gallium indium alloy and spraying benzotriazole (BTA). Through the compounding design of the double-chamber microcapsules and the conductive filler, the cooperation of double self-repairing and high conductivity is realized, liquid metal is heated to flow to repair a conductive path during mechanical damage, epoxy resin curing is triggered by chemical corrosion to repair strength, and a three-dimensional conductive network is constructed by carbon black / carbon nanotubes.

Disclosed is a simple and cost-effective technique for generation of high-throughput aerosols of uniform-diameter submillimeter-size core-shell particles. An aerosol may be created by using, e.g., a first tube filled with liquid and having a small hole through a sidewall, then passing a fluid through the liquid via a second tube passing partially though the first tube at a location above the small hole, forming coaxial flow through the small hole. The diameter of generated core-shell particles scales with the inner and outer diameter of the gas tube nozzle, enabling control on the size of the produced particles. Further disclosed is a simple, scalable and cost-effective technique that enables microencapsulation of various materials. Including highly viscous materials, into sub-10 μm particles. A specially designed atomizing tube interacts with bubbles formed in a liquid comprising a plurality of immiscible liquid layers to generate aerosols of droplets which have layered core-shell structure.

The invention discloses an enterococcus faecalis bacteriophage microencapsulated microsphere, and belongs to the technical field of bioengineering. The microencapsulated microsphere comprises a core material and a composite wall material, wherein the core material is enterococcus faecalis bacteriophage; the composite wall material is composed of a sodium alginate solution, a gelatin solution, a glycerin solution, a chitosan solution and a calcium chloride solution. The invention further discloses a preparation method of the microencapsulated microsphere. The preparation method comprises the steps of raw material pretreatment, mixing of a composite wall material and bacteriophage, step-by-step calcium chloride solidification, chitosan film coating and the like. The enterococcus faecalis bacteriophage microencapsulated microspheres can be used for preparing livestock and poultry breeding prevention and control preparations or feeds, the problem that free bacteriophages are poor in acid resistance and heat resistance is solved, and an efficient scheme is provided for prevention and control of enterococcus faecalis.

The invention relates to the technical field of material chemical industry, in particular to a method and a system for extracting natural pigment for coating based on microbial fermentation, which comprises the following steps: acquiring a plurality of initial strains, acquiring a genetic recombination strain group, preparing single-cell suspension from the genetic recombination strains, performing fluorescence detection on the single-cell suspension, and confirming an optimal mutant strain. The method comprises the following steps: obtaining a mutant strain pigment crude extract, confirming a maximum absorption wavelength, culturing an optimal mutant strain, respectively carrying out absorbance determination on each mutant strain experimental group to obtain an absorbance value set, confirming an optimal fermentation temperature, carrying out large-scale fermentation to obtain a high-secretion fermentation liquid, carrying out wall breaking treatment to obtain a wall-broken thallus suspension, and carrying out freeze drying to obtain the high-secretion thallus suspension. The method comprises the following steps: preparing an intracellular pigment solution, carrying out microencapsulation on the intracellular pigment solution to obtain pigment microspheres, extracting a verification pigment extracting solution from the pigment microspheres, and obtaining the natural pigment by utilizing the verification pigment extracting solution. The problems of low extraction efficiency, high energy consumption and environmental pollution during extraction of the natural pigment for the coating can be solved.

The invention discloses an activity protection preparation method of a co-extruded double-layer structure microorganism-added pet food, and belongs to the related technical field of biological agriculture. A microencapsulated probiotic preparation (the embedding rate is greater than or equal to 96%) is prepared through sodium alginate-chitosan double-layer embedding; the glass transition temperature Tg of the outer-layer material after hardening and tempering is greater than or equal to 80 DEG C; the sandwich layer is formed by mixing microcapsules, a filling agent, grease and an antioxidant at 25-35 DEG C. The temperature of an outer-layer die head is 110-130 DEG C, the temperature of a sandwich layer is 40-60 DEG C, the gap of the die head is 0.2-0.5 mm, the pressure difference is 0.5-1 MPa, the glass-state outer layer is formed through rapid cooling after extrusion, and finally the oxygen barrier film with the OTR smaller than or equal to 3 cc / m < 2 > / 24 h is compounded. Through cooperation of microencapsulation, temperature gradient, glassy state packaging and the barrier film, a full-chain activity protection system is constructed, the survival rate of the probiotics is larger than or equal to 85%, the leakage rate of the sandwich layer is smaller than or equal to 5%, the survival rate is larger than or equal to 70% after the probiotics are stored for 6 months at the temperature of 25 DEG C, and the problems of thermal death of the probiotics, sandwich layer leakage and storage inactivation are solved.

The invention relates to the technical field of disinfection and deodorization, in particular to a slow-release and lasting microencapsulated wall material and application thereof in a disinfectant and a deodorization product, the wall material is a pH-sensitive, temperature-sensitive or water-soluble material and is used for embedding active ingredients; according to the wall material, the modified corn starch is used as a base material, the wall material is endowed with the characteristics of pH sensitivity, temperature sensitivity or water solubility through a modification reaction of maleic anhydride in a specific proportion, at a specific temperature and for a specific time, and the wall material is triggered to be broken / dissolved only in a use scene (such as water encountering when a disinfectant is sprayed and a deodorization product is in contact with a peculiar smell environment and humidity changes); the ineffective consumption of the active ingredients in the storage or non-use stage is avoided, the problems that the traditional active ingredients are high in release speed, short in action duration time, strong in irritation and the like are solved, and the active ingredients are suitable for disinfectants and deodorization products and have practicability and economical efficiency.

The invention belongs to the technical field of starch powder microencapsulation, and discloses an anti-digestion starch microcapsule as well as a preparation method and application thereof. A shell of the microcapsule is an oxidized starch / whey protein isolate / polyphenol composite film, and an inner core of the microcapsule is starch powder; the mass ratio of the inner core to the shell of the microcapsule is 10: (1-4); the composite film shell is formed by compounding whey protein isolate, oxidized starch, polyphenol and a plasticizer according to the mass ratio of 2: (1-4): (0.2-2.4): (0.8-4). According to the invention, a powder coating technology is adopted, so that efficient and uniform coating of starch particles is realized. According to the technology, the uniformity and anti-digestion stability of the coating layer are remarkably improved, the film layer structure and release behavior can be precisely regulated and controlled, and the method has good process amplification and product consistency and is suitable for development and application of low-GI food, functional food, health care products and other products.

The application discloses a kind of meat chicken feed based on anti-inflammatory plant extract compound and preparation method thereof, belong to feed processing technology field.The method will eucommia leaf powder and coarse coffee residue are mixed according to proportion to constitute fermentation substrate, prevent paste and harden using coffee residue to construct porous framework;Inoculate substrate induction and surface active pretreatment bacillus subtilis, carry out aerobic fermentation under the control of temperature and humidity linkage feedback, promote a large number of free release of bound state chlorogenic acid, and realize in situ biochemical detoxification of free caffeine.Fermentation mature material is dried and crushed to obtain fermentation raw powder, then is compounded with microencapsulated sodium butyrate of core-shell double-layer structure, and is mixed into daily ration granulation by adopting multi-stage premixing, grease liquid bridge adhesion and steam hydrothermal trigger in-situ crosslinking coating process.The application solves the problem that eucommia fermentation system is easy to collapse, realizes efficient extraction of active ingredients, preparation stress protection and accurate intestinal targeted delivery in later stage, and can significantly improve the intestinal health and production performance of meat chicken.

This invention relates to the field of preservation films, specifically to a nanocomposite film for apple storage and preservation and its preparation method, comprising a base film and a coating liquid. This invention combines a cellulose nanocrystal base film with an evaporation-induced self-assembled layered ordered structure with a superhydrophobic cellulose ester coating. A cyclodextrin-laccase cascade system is integrated in the base film to specifically capture and enzymatically degrade the pathogenic factors of tiger skin disease. A micro-nano rough structure is constructed in the coating to encapsulate humidity-triggered microencapsulated degradation enzymes. Compared with existing technologies, this invention simultaneously achieves multiple effects on a single film: passive regulation of the respiratory microenvironment, active removal of stored pathogens, surface anti-condensation, and accelerated degradation on demand after disposal. It leaves no harmful residues throughout its entire life cycle and has broad application prospects in the cold chain logistics and green packaging of fresh agricultural products.

The invention discloses a safe butachlor-oxadiargyl microcapsule suspending agent and a preparation method thereof in the field of herbicides. The safe butachlor-oxadiargyl microcapsule suspending agent comprises the following components in parts by weight: 3-5 parts of modified polylactic acid, 25-30 parts of butachlor, 1-3 parts of oxadiargyl, 15-20 parts of a dispersing agent, 1-2 parts of an anti-freezing agent, 3-5 parts of a thickening agent, 0.5-1 part of a preservative and 30-50 parts of water. Modified polylactic acid is adopted as a micelle wall material, so that the stability and release control capability of the microcapsule are improved, butachlor and oxadiargyl can be uniformly coated into the microcapsule, nano-particles are formed, the dispersity and stability of active ingredients are improved, and the bioavailability of the microcapsule is improved. The microencapsulation technology effectively reduces the toxicity and volatility of the pesticide, and improves the environmental friendliness and use safety.

The present application relates to the technical field of soil improvement, and specifically relates to a PGPR microbial agent for preventing soil compaction and a preparation method thereof, which comprises the following raw materials in parts by weight: microencapsulated PGPR microorganism 50-80 parts, microencapsulated microbial activator 8-15 parts, negative charge nanofiber 10-20 parts, and coating agent 40-60 parts; the coating agent is a mixture of polyethylene glycol and polypropylene glycol in a weight ratio of (60-80):(20-40); and the coating agent is dissolved in a glycol ether solvent to form a film. In the present application, the PGPR microorganism and the microbial activator screened are subjected to microencapsulation treatment, and then embedded with the negative charge nanofiber by using a coating agent to obtain a microbial agent, which is put into soil, can effectively improve soil structure, enhance the coagulation of soil, significantly improve soil compaction, and can also prevent soil compaction for a long time, thereby providing a suitable soil environment for plant growth.

The application discloses a traditional Chinese medicine micro-capsule enteric-coated tablet for promoting intestinal mucosa repair and a preparation method thereof, and belongs to the technical field of traditional Chinese medicine pharmacy, and comprises a micro-capsule tablet core and an enteric-coated layer coated on the outer surface of the micro-capsule tablet core, wherein the micro-capsule tablet core comprises microcapsules with white-bark tree gum liquid as a wall material and Chinese herbal medicine extract as a core material, the Chinese herbal medicine extract comprises water-soluble inclusion compounds prepared by extracting aloe emodin, Danshen, processed ginger, Sanqi and spina date seed and then being wrapped by beta-cyclodextrin, and active polysaccharide retentate prepared by extracting Herba Baphicacanthis, fried coix seed, white peony root, licorice, Fructus Mume, Astragalus and dendrobium by complex enzymolysis and then being separated by ultrafiltration, and the white-bark tree gum liquid is prepared by swelling white-bark tree in cold water and then being treated by high-pressure homogenization; the micro-capsule is adsorbed on an intestinal ulcer surface to form a physical isolation barrier, and the ultrafiltration detoxification and cyclodextrin wrapping process improves the utilization degree and safety of active ingredients at a target site.

The application discloses a method for improving the antiviral efficacy of rainbow trout type I interferon alpha protein and belongs to the technical field of medical drugs. The method is that resistant starch and carboxymethyl chitosan are used as microencapsulation materials to perform microencapsulation treatment on the interferon alpha protein. A new combination mode of coating materials, resistant starch-carboxymethyl chitosan, is adopted, wherein the resistant starch has excellent enzyme resistance and colon targeting property, can prolong the half-life of the interferon protein in the body and has a long action time. The carboxymethyl chitosan has excellent water solubility and film forming property. After the two composite materials are used for coating, the highest encapsulation rate can reach 23.09%, the highest drug loading rate can reach 81.20%, and the effect is remarkable. The prepared oral interferon microcapsules by using the method are simple in use, have more obvious antiviral effect and have excellent application prospect, and a new idea is provided for microencapsulation coating.

The invention belongs to the field of functional materials, and particularly relates to a microencapsulated resistant dextrin lanolin material as well as a preparation method and application thereof. The preparation method comprises the following steps: dropwise adding molten lanolin into a resistant dextrin solution, adding an emulsifier, stirring, carrying out ultrasonic treatment, and freeze-drying to obtain the microencapsulated resistant dextrin lanolin material. According to the invention, a micro-capsule structure with resistant dextrin as a wall material and wool fat as a core material is constructed by combining ultrasonic-assisted emulsification and freeze-drying technologies. According to the structure, the film-forming property and the water solubility of the resistant dextrin and the oil solubility of the wool fat are ingeniously utilized, and effective wrapping and fixing of an oil phase and a water phase are achieved.

The invention discloses a preparation process of micrococcus oil microcapsule powder, and belongs to the technical field of microcapsule preparation. In order to overcome the technical defects that the nannochloropsis sp. Oil is dark green semi-solid ointment at normal temperature and is difficult to directly emulsify and embed, the process realizes efficient microencapsulation of the nannochloropsis sp. Oil through specific oil phase dilution and blending, wall material selection and process parameter optimization. The preparation method comprises the following steps: diluting micrococcus oil with flaxseed oil or DHA algal oil according to a specific ratio to prepare an oil phase core material; whey protein isolate, sodium caseinate and the like are used as wall materials, and vitamin C is used as an antioxidant to prepare a water-phase wall material; the product is prepared through the working procedures of mixing, high-speed shearing, high-pressure homogenizing, spray drying, mixing, sieving, packaging and the like. The prepared microcapsule powder is high in oil carrying rate, high in embedding rate, good in stability, free of peroxide value detection, free of additional emulsifier and suitable for industrial production, the application scene of EPA in the fields of food and medicine is expanded, and the EPA microcapsule powder can be particularly used for middle-aged and elderly health products, milk powder and other nutrition fortified food.

The invention relates to the technical field of pharmaceutical preparations, and particularly discloses a microencapsulated tilmicosin premix and a preparation method thereof, and the microencapsulated tilmicosin premix comprises the following raw materials: tilmicosin, a composite capsule material, an emulsifier, a stabilizer, a suspending aid and livestock and poultry feed acceptable auxiliary materials. The preparation method of the microencapsulated tilmicosin premix comprises the following steps: step 1, adding a composite capsule material into deionized water, and stirring and dispersing to obtain a capsule material solution; step 2, adding tilmicosin, an emulsifier and a stabilizer into the capsule material solution, and homogenizing to obtain a medicine dispersion liquid; step 3, performing spray drying on the medicine dispersion liquid, and sieving after drying to obtain microcapsule particles; and step 4, adding the microcapsule particles, a suspending aid and livestock and poultry feed acceptable auxiliary materials into a mixing machine, and mixing to obtain the microencapsulated tilmicosin premix. The prepared microencapsulated tilmicosin premix is high in encapsulation efficiency, excellent in targeting performance and high in stability, and adapts to livestock and poultry feed application scenes.

The present invention relates to the technical field of fire extinguishing materials. Disclosed are an active fire extinguishing microcapsule, a preparation method, the use, an ultraviolet-curable resin board and a preparation method therefor. The microcapsule has a core-shell structure, in which a core material is perfluoro (2-methyl-3-pentanone) (PFMP) that, as an efficient fire extinguishing agent, is adapted to suppress the heat rise rate of ultraviolet-curable polymers in thermal runaway and fire environments, and a shell layer is a polymer wall material constituted by gelatin, has a certain thickness, and can rupture at a preset temperature. By means of simple agglomeration, PFMP is microencapsulated as the core material to prepare a microcapsule having a specific particle size distribution, which rapidly releases a fire extinguishing agent under high temperature conditions, effectively suppressing flames.