523 results about "Pickering emulsion" patented technology

The invention belongs to the field of enzymatic preparation of structural phospholipids, and particularly relates to a method for preparing phosphatidylserine through interfacial enzyme catalysis. A series of high-activity immobilized phospholipase are prepared by innovatively adopting bifunctional group modified hollow mesoporous silica microspheres as a carrier and adsorbing immobilized phospholipase D. The catalyst has the functions of a catalyst and an emulsifier, and a Pickering emulsion interfacial enzyme catalysis system can be efficiently constructed. In the system, the phosphatidylcholine and the serine are efficiently converted into the phosphatidylserine through a phosphatidyl transfer reaction, the conversion rate of the phosphatidylserine within 20 minutes can reach 85%-95%, and the catalytic efficiency reaches up to 372 mmol / (g.h). In addition, after the catalyst is recycled for 10 times, the conversion rate is still kept at 70.9%, and the catalyst shows excellent stability and reusability. The method has the remarkable advantages of being mild in reaction condition, high in catalytic efficiency, capable of being repeatedly used and the like, and a new technical approach is provided for industrial production of phosphatidylserine.

The invention belongs to the technical field of functional Pickering emulsion preparation, and particularly discloses a silk fibroin nanoparticle-stabilized biphase drug-loaded Pickering emulsion and an antibacterial application thereof. The curcumin-loaded silk fibroin nanoparticles Cur-SFNPs with uniform form and size are prepared by using an anti-solvent precipitation method. In order to improve the antibacterial effect of the Pickering emulsion, the Cur-SFNPs is utilized to stabilize the soybean oil loaded with resveratrol, and the oil-in-water type Pickering emulsion is prepared. The Pickering emulsion prepared by taking Cur-SFNPs as a stabilizer has the characteristics of small particle size, uniform distribution, storage stability, heating stability, freeze-thaw stability, food safety and environmental friendliness. And as a two-phase drug-loaded emulsion, two natural hydrophobic active drugs are loaded at the same time, so that the solubility and bioavailability of the emulsion can be enhanced, the loaded active substances play a synergistic antibacterial and antioxidant role, and the emulsion can be applied to food preservation.

The invention provides a preparation method of a composite Pickering emulsion based on modified yeast protein. Comprising the following steps: preparing modified yeast protein through combined treatment of papain and TG enzyme; mixing the modified yeast protein solution with a chitosan solution, and heating at 90 DEG C to obtain a proteoglycan composite solution, wherein the mass ratio of yeast protein to chitosan is (5: 1)-(1: 5); after the proteoglycan composite solution is cooled to room temperature, the pH value is adjusted to 2.5-6.5; 20%-60% of vegetable oil is added into the proteoglycan composite solution, and the Pickering emulsion can be obtained through homogenization. The composite Pickering emulsion based on the modified yeast protein is suitable for complex food matrixes, good in stability and capable of efficiently embedding various functional components and remarkably delaying oxidation, photolysis or thermal degradation of the functional components, so that the product quality is improved, and the shelf life of the product is prolonged. If the monascus pigment is added, the problems of color loss and degradation of the monascus pigment in the application process can also be improved.

The invention discloses a preparation method of a curcumin-loaded Pickering emulsion steady-state carrier and tea protein-chitosan composite nanoparticles used by the curcumin-loaded Pickering emulsion steady-state carrier, and belongs to the technical field of high-valued processing of food functional factors. The preparation method comprises the following steps: firstly, extracting tea protein from a tea leaf processing byproduct tea residue by adopting an alkali extraction and acid precipitation method, and secondly, constructing the tea protein-chitosan composite nanoparticles by adopting a pH induction method. And mixing the oil phase containing curcumin with the water phase, and emulsifying by using a high-speed shearing machine to prepare the Pickering emulsion. The method is simple to operate, the prepared Pickering emulsion stabilized by the tea protein-chitosan composite nanoparticles can improve the bioavailability of curcumin from 10.8% to 32.6%, meanwhile, high-value utilization of the tea protein is achieved, and the method has important significance in promoting development and application of functional food.

The invention discloses application of a particle stabilizer, an oil-in-oil Pickering emulsion as well as a preparation method and application of the oil-in-oil Pickering emulsion, and relates to the technical field of emulsion preparation. The particle stabilizer is used for preparing the oil-in-oil Pickering emulsion, and the particle stabilizer is solid insoluble nanoparticles and is selected from one or more of inorganic nanoparticles, organic nanoparticles, composite oleophobic nanoparticles and stimuli-responsive nanoparticles. The preparation method of the oil-in-oil Pickering emulsion comprises the following steps: mixing the first oil phase, the second oil phase and the particle stabilizer, and carrying out an emulsification technology to obtain the oil-in-oil Pickering emulsion. According to the emulsion system prepared by the invention, the oil phase components with different polarity differences are reasonably matched, and the oil phase type is flexibly selected according to specific requirements of target application, so that the environmental adaptability and the function application range of the emulsion can be remarkably improved, and the emulsion system has a good application prospect.

The invention discloses a preparation method of a double embedding emulsion preparation / emulsion based on octenyl succinic acid cyclodextrin ester, and relates to an inclusion compound based on modified cyclodextrin and a stable Pickering emulsion system thereof. According to the method, the uniformity of the cyclodextrin modification substitution degree is improved through ultrasonic assistance, the embedding rate and the embedding stability of hydrophobic active ingredients can be improved, meanwhile, the Pickering emulsion is stabilized, preparation of the double-embedded emulsion preparation is achieved, and the stability and the packaging efficiency of an emulsion preparation packaging delivery system can be effectively improved through the method. The method comprises the following steps: 1, preparing octenyl succinic acid cyclodextrin ester; 2, preparing an OSA-beta-CD / phenolic compound clathrate compound; and 3, preparing the dual-embedding emulsion preparation / emulsion. The invention provides a preparation method of a double-embedding emulsion preparation / emulsion based on octenyl succinic acid cyclodextrin ester. The double-embedding emulsion preparation / emulsion can be applied to a double-embedding food functional component delivery system.

The invention provides a stabilizer for Pickering emulsion and application of the stabilizer, and relates to the technical field of Pickering emulsion preparation. The stabilizing agent for the Pickering emulsion is obtained by compounding 6 '-O-caffeoyl arbutin and cellulose nanocrystals. In specific application, the 6'-O-caffeoyl arbutin and the cellulose nanocrystals are prepared into a water phase, and then the water phase is mixed with an oil phase to prepare the Pickering emulsion. According to the preparation method, the defects in the prior art are overcome, the stability of the Pickering emulsion is effectively improved, meanwhile, the oxidation resistance effect of the Pickering emulsion is further enhanced, and the application value of the Pickering emulsion is improved.

The invention discloses a nanometer fiber yarn-based phytosterol Pickering emulsion as well as a preparation method and application thereof, and the nanometer fiber yarn-based phytosterol Pickering emulsion comprises the following components in parts by weight: 0.5-1 part of nanometer fiber yarn; 1 to 10 parts of phytosterol / phytosterol ester; 95 to 105 parts of a water phase component; 95 to 105 parts of an oil phase component; the nanofibers are extracted from agricultural wastes; according to the invention, the nanofiber is used as the only or main stabilizer of the phytosterol Pickering emulsion, so that the problems of solubility, emulsion stability and bioaccessibility of phytosterol can be solved at the same time; and efficient interface stability and steric hindrance stability are realized by utilizing a unique nano network structure of the nano fiber yarns, and a natural, safe and efficient phytosterol delivery system is provided.

The invention discloses a crisaborole Pickering emulsion as well as a preparation method and application of the crisaborole Pickering emulsion. The crisaborole Pickering emulsion prepared by the invention solves the problem of poor water solubility of crisaborole, improves the drug solubility, and has the characteristics of small particle size, high centrifugal stability, good long-term stability and the like. Compared with the traditional nanoemulsion, the Pickering emulsion disclosed by the invention shows certain advantages in the aspects of biocompatibility, cumulative transdermal amount and cutin retention, improves the curative effect of a local preparation and reduces skin toxicity, and can be used as an ideal local preparation for treating atopic dermatitis and other diseases.

The invention provides a self-healing-shape memory phase change microcapsule for cooling drilling fluid as well as a preparation method and application of the self-healing-shape memory phase change microcapsule, and belongs to the technical field of cooling of the drilling fluid and underground heat management. The preparation method of the phase change microcapsule comprises the following steps: fully dispersing a polyurethane prepolymer, a polyimide solution and hydrophobic nanocellulose in an organic solvent to obtain an oil phase; dissolving a phase change material in deionized water to obtain a water phase; under a shearing condition, dropwise adding the oil phase into the water phase, and emulsifying to form a stable oil-in-water type Pickering emulsion; and adding an aqueous solution of a chain extender, and carrying out interfacial polymerization reaction, centrifugation, washing and drying. The phase change microcapsule disclosed by the invention shows excellent cyclic service performance under the underground high-temperature and high-shear conditions, and structure repair and morphology recovery can still be realized by virtue of self-healing and shape memory effects even if a shell layer is damaged, so that the service life of the phase change microcapsule is prolonged, and the cooling persistence of the drilling fluid is improved.

The invention discloses an emulsifier for preparing a Pickering emulsion, the Pickering emulsion as well as a preparation method and application of the Pickering emulsion. The emulsifier of the Pickering emulsion is obtained by dissolving distearoyl phosphatidylcholine, cholesterol and distearoyl phosphatidyl ethanolamine-polyethylene glycol 2000 in ethanol, carrying out rotary evaporation to remove ethanol, then adding an antigen aqueous solution containing an antigen, continuing rotary evaporation to obtain liposome nanoparticles, heating the liposome nanoparticles with mannose in a water bath, and carrying out freeze drying. The Pickering emulsion is obtained by dispersing an emulsifier in water as a water phase, taking squalene as an oil phase, mixing the water phase and the oil phase, and homogenizing. The Pickering emulsion disclosed by the invention is prepared by taking antigen presenting cell targeted liposome nanoparticles as a raw material; and the antigen has excellent ion concentration characteristic, pH stability, temperature stability and storage stability, and can protect the integrity of the antigen.

The invention relates to the technical field of conductive materials, and discloses a flexible conductive composite material and a preparation method and application thereof. The flexible conductive composite material comprises the following preparation raw materials: a thermoplastic elastomer, a conductive filler, cellulose nanocrystals, an inorganic salt, an organic solvent and water. According to the flexible conductive composite material provided by the invention, the Pickering emulsion is co-stabilized by the cellulose nanocrystal auxiliary conductive filler, the cellulose nanocrystal raw material is easy to obtain, biodegradable, environment-friendly and pollution-free, the Pickering emulsion is good in stability, the conductive filler is directionally enriched on an emulsion interface to form a continuous path, the bottleneck of filler dispersion is broken through, a conductive network structure is complete, and the stability of the Pickering emulsion is improved. The strain sensing response is sensitive, reversible circulation is achieved, the conductive interval is wide, the conductive seepage threshold value is about 1 wt%-2 wt%, when the addition amount of the conductive filler is 10 wt%, the conductivity is about 25 S / cm, and the conductivity is improved in a breakthrough mode.

The invention relates to the technical field of preparation of Pickering emulsion stabilizers, in particular to a protein-polyphenol-polysaccharide ternary covalent complex as well as a preparation method and application thereof. The method comprises the following steps: step 1, preparing a whey protein isolate aqueous solution, completely hydrating the whey protein isolate aqueous solution, compounding a grape seed oligomeric proanthocyanidins aqueous solution and a hydrated protein aqueous solution, adjusting the pH value, and carrying out stirring reaction and dialysis freeze-drying to prepare a protein-polyphenol binary compound; and 2, compounding the binary compound solution with the lycium barbarum polysaccharide solution, uniformly stirring, carrying out Maillard reaction to obtain a ternary compound solution, and freeze-drying to obtain the protein-polyphenol-polysaccharide ternary compound. The invention provides a non-toxic, harmless and pollution-free natural emulsifier and stabilizer, and simultaneously prepares a Chinese wolfberry seed oil Pickering emulsion capable of loading nutritional ingredients and active substances, thereby providing reference for screening research of the natural emulsifier and protection of nutritional ingredients of Chinese wolfberry seed oil, which are easy to photodecompose and oxidize; the problem that the effect of protein serving as a Pickering emulsion stabilizer in the prior art is poor is solved.

The invention discloses a single-component isocyanate Pickering emulsion adhesive with long pot life as well as a preparation method and a use method thereof, and belongs to the technical field of high polymer materials / adhesives. The invention aims to solve the problems of low artificial board production efficiency, unstable board bonding performance and difficulty in direct application of a lignin body to a reverse isocyanate emulsion adhesive system due to short adhesive preparation pot life and dependence on environmental humidity in curing of an existing isocyanate adhesive. The single-component isocyanate Pickering emulsion adhesive with the long pot life is prepared from isocyanate, water, lignin sphere nanoparticles and a surfactant. The invention further discloses a preparation method of the single-component isocyanate Pickering emulsion adhesive with the long pot life. The preparation method comprises the following steps: 1, mixing; and 2, emulsifying. The application method comprises the following steps: coating the surface of a base material with the single-component isocyanate Pickering emulsion adhesive, and then assembling and hot-pressing. The invention is used for the single-component isocyanate Pickering emulsion adhesive with the long pot life as well as the preparation and the use of the single-component isocyanate Pickering emulsion adhesive.

The invention relates to a preparation method of a water-in-water nanocellulose Pickering emulsion with uniform and controllable size, which comprises the following steps: S1, preparing an aqueous two-phase system, and respectively preparing a water-based continuous phase and a dispersed phase of a water-soluble polymer with compatible type, concentration and molecular weight; s2, preparing an aqueous continuous phase suspension containing 5%-8% of cellulose nanocrystal (CNC) particles; s3, assembling a micro-channel device which comprises a two-water-phase two-channel angle-designable feeding pipe, a length-dependent composite pipe for regulating and controlling the size of a dispersed phase, a lead-in pipe for introducing the particle suspension and the composite pipe according to a set angle, and a spiral pipe for forcibly assembling and optimizing particles on a two-phase interface and adaptively regulating and controlling the length / screw pitch / diameter; s4, preparing a water-in-water emulsion with stable CNC particles; according to the method, two-water-phase compounding and particle interface assembling are strengthened through micro-channel design, the flow speed and the air pressure interruption time are regulated and controlled, accurate control over the emulsion size and the droplet distance is achieved, and the common problems that the emulsion size is not uniform and the particle coverage degree is not high are solved.

The invention discloses a mechanical property regulation and control method of an aromatic microcapsule, and belongs to the technical field of microcapsules. The preparation process of the microcapsule comprises the following steps: self-assembling CNC and an amino-functionalized polymer ligand on an oil-water interface to form a stable Pickering emulsion. Wall materials are deposited on the surfaces of emulsion droplets in situ, the CNC interface coverage rate is regulated and controlled by adjusting parameters such as the ligand concentration and the emulsion water phase pH value, and then a series of aromatic microcapsules with different mechanical properties are prepared. In addition, the functional microcapsules can be designed in a customized manner according to different application requirements, and good application prospects are shown.

The invention provides a preparation method of a self-repairing waterborne polyurethane leather coating material containing a polyurethane colloid capsule, which comprises the following steps: firstly, preparing an O / W type Pickering emulsion by taking modified SiO2 nanoparticles as a stabilizer and a polyurethane solution as an oil phase; the preparation method comprises the following steps: firstly, taking the polyurethane colloid capsule as a template, forming the colloid capsule capable of being dispersed in a water system through a sol-gel reaction, and finally, uniformly dispersing the colloid capsule into a waterborne polyurethane leather finishing emulsion to prepare the waterborne polyurethane leather self-repairing coating material containing the polyurethane colloid capsule. According to the invention, the polyurethane healing agent is used as a core material, and the modified SiO2 nanoparticles are used as a shell wall, so that the prepared spherical colloid capsule is high in encapsulation efficiency and strong in stability. According to the preparation method provided by the invention, the problems of poor self-repairing performance and mechanical property caused by low compatibility of a healing agent and a polyurethane matrix for leather finishing and easy agglomeration of a traditional microcapsule in a waterborne polyurethane emulsion in a traditional external aid type self-repairing polyurethane coating are solved; and the wear resistance of the leather polyurethane coating is remarkably improved by introducing SiO2.

The invention discloses a preparation method of a mesoporous silica ball essence micro-capsule, and relates to the technical field of cosmetics, and the preparation method comprises the following steps: mixing mesoporous silica balls with an active matter, and enabling the active matter to be adsorbed in mesopores to form an active matter loading core; dissolving polylactic acid and a polylactic acid-polyethylene glycol block copolymer in an organic solvent, adding the active matter loaded core, a silicon dioxide precursor and a thickening agent, and homogenizing to form a composite oil phase; the preparation method comprises the following steps: dispersing a flaky inorganic material in water to form a water-phase suspension; adding the water-phase suspension liquid into the compound oil phase under a shearing condition to form Pickering emulsion; volatilizing the organic solvent and solidifying a shell layer to obtain an essence micro cabin; by introducing the degradable high-molecular polylactic acid and the block copolymer compatilizer, the problems that active matters are easy to leak and the release behavior is uncontrollable in a traditional mesoporous silica carrier are solved, and the efficacy durability and reliability of a cosmetic formula are remarkably improved.

The present invention discloses a light-responsive Pickering emulsion that is synergistically stabilized by a spiropyran ionic liquid and UiO-66-NH2. The Pickering emulsion comprises an oil-water phase, and its stabilizer is a spiropyran ionic liquid and a metal-organic framework material UiO-66-NH2. The stable Pickering emulsion can undergo demulsification under additional visible light irradiation. When further irradiated with ultraviolet light, the system can be re-emulsified to form a stable Pickering emulsion. The Pickering emulsion provided by the present invention can be used for the Click reaction of hydrophilic azide compounds and terminal alkynyl compounds. Through reversible visible light and ultraviolet light regulation, the catalyst and spiropyran ionic liquid can be recycled, and the Pickering emulsion has application value in the fields of controlled drug release and sustainable catalysis.

The invention discloses an anisotropic Pickering emulsion, a preparation method of the anisotropic Pickering emulsion, polymer particles and a preparation method of the polymer particles, and relates to a method for preparing the anisotropic Pickering emulsion by utilizing a membrane emulsification technology and nano particle-polymer interface electrostatic co-assembly and further preparing the anisotropic polymer particles by taking the Pickering emulsion as a template. The method is simple, efficient, green and environmentally friendly, the shape and size of the prepared anisotropic particles are controllable, mass production can be achieved, and the method has wide application prospects in the fields of catalysis, separation, optics and the like.

The invention discloses a restriction enzymolysis pea protein isolate-chitosan Pickering emulsion which is composed of an oil phase and a water phase, and the water phase is composed of HPP, CS and water; the HPPI is obtained by carrying out enzymolysis on PPI through trypsin. According to the application of the restricted enzymolysis pea protein isolate-chitosan Pickering emulsion in preparation of a medicine embedding preparation, the medicine can be selected from astaxanthin. The invention further discloses the AST embedded Pickering emulsion and the Pickering emulsion yoghourt. According to the method disclosed by the invention, the PPI is subjected to enzymolysis by utilizing an enzymolysis technology to obtain the HPPI with more excellent emulsifying performance, the enzymolysis time is extremely short (2 minutes), the modification cost is favorably reduced in actual production, and the method is easy to realize in industrialization. The research of the invention provides theoretical support for developing a novel delivery system and widening the application range, and lays a foundation for the application of Pickering emulsion in future food.

The invention discloses a Pickering IL emulsion microreactor constructed on the basis of temperature-sensitive double-enzyme Janus spheres and application of the Pickering IL emulsion microreactor to enhanced catalysis of conversion of CO2 into formic acid. A Janus emulsion template method is combined with a photocuring technology to synthesize a nano-scale dual-functional temperature-sensitive Janus sphere, one half of the nano-scale dual-functional temperature-sensitive Janus sphere is a hydrophilic hydrocarbon polymer, the other half of the nano-scale dual-functional temperature-sensitive Janus sphere is a hydrophobic fluorocarbon polymer, and rapid inversion of a Pickering emulsion can be realized by utilizing temperature sensitivity. The method comprises the following steps: preparing a Janus particle hydrophilic / hydrophobic hemisphere, selectively immobilizing formate dehydrogenase FDH and carbonic anhydrase CA on the Janus particle hydrophilic / hydrophobic hemisphere to obtain a temperature-sensitive FDH-Janus-CA composite sphere, introducing a fluorine-functionalized ionic liquid to regulate and control the internal microenvironment of a microreactor, and constructing a Pickering IL emulsion microreactor. The CO2 absorption capacity is increased by 47 times compared with that of a pure water system, the formic acid yield reaches 27.5 mM and is higher than the maximum value 22.8 mM of current enzyme electrocatalysis, the storage and catalysis stability is good, and an efficient and sustainable scheme is provided for CO2 recycling.

The application provides a polymer microsphere profile control water plugging agent and a preparation method and application thereof, and the preparation method comprises the following steps: dispersing molybdenum disulfide nanosheets in water, adding a template carrier to form a Pickering emulsion; performing a first polymerization reaction on the Pickering emulsion, polymer monomer A, a RAFT reagent and an initiator to obtain hydrophilic polymer grafted copolymer nanosheets; performing a second polymerization reaction on the hydrophilic polymer grafted copolymer nanosheets, polymer monomer B and an initiator in a solvent to obtain one-side polymer modified nanosheets; removing the template carrier, and performing a third reaction on the one-side polymer modified nanosheets and amino acids in water to obtain the polymer microsphere profile control water plugging agent. The polymer microsphere profile control water plugging agent prepared by the application is resistant to temperature and salt, can enter deep strata, is uniformly distributed in high-permeability layers, has good profile control and water plugging effects, and can improve recovery efficiency.

The invention discloses a preparation method of a stable Pickering emulsion based on enzymic method modified whey protein microgel particle-araboxylan covalent composite particle, which comprises the following steps: preparing whey protein microgel particles by cross-linking glutamine transaminase, mixing the whey protein microgel particles with an araboxylan solution, and adding an enzyme method modified whey protein microgel particle-araboxylan covalent composite particle to prepare the Pickering emulsion. Adding horse radish peroxidase and a hydrogen peroxide solution to carry out enzymatic modification to obtain a water phase, mixing the oil phase and the water phase according to a volume ratio, carrying out IKA homogenization, and then carrying out ultrasonic treatment to obtain a Pickering emulsion with stable covalent composite particles; the preparation method is simple, harmful substances cannot be generated in the preparation process, and meanwhile, the preparation method is low in production cost, short in production period, rich in nutrition, green, free of pollution and high in economic utilization value; the obtained Pickering emulsion has high viscosity and excellent storage stability and environmental stability, an effective delivery carrier construction strategy is provided for construction of a fat-soluble and heat-sensitive bioactive micromolecule delivery system, and the application range of protein microgel particles in the fields of food, medicine and the like is widened.

A WG-DNPs-stabilized Pickering emulsion and its application in β-carotene loading are disclosed. The emulsion is prepared by the following method: S1: Gluten protein and dextran form a covalent complex through Maillard reaction. The gluten protein complex is then prepared into a solution, and its pH is adjusted to neutral. The ionic strength of the solution is then adjusted to 15-25 mM using NaCl to obtain an intermediate solution. The intermediate solution is subjected to water bath heat treatment, ice bath cooling, and freeze drying sequentially to obtain WG-DNPs. S2: WG-DNPs are dispersed in distilled water to obtain a WG-DNPs dispersion. The WG-DNPs dispersion is mixed and homogenized with an oil phase to obtain the Pickering emulsion. This invention uses glycosylated gluten protein nanoparticles as a stabilizer for Pickering emulsions, giving the Pickering emulsions good thermal and storage stability. Furthermore, by loading β-carotene onto the Pickering emulsion stabilized by WG-DNPs, the bioavailability and digestive stability of β-carotene can be significantly improved, thus aiding in the human body's intake of β-carotene.

The invention provides an interface-stable and anti-fatigue Janus conductive hydrogel, a preparation method and sensing application, and the preparation method comprises the following steps: uniformly mixing acrylic acid, ethylene glycol dimethacrylate, a photoinitiator, ferric chloride hexahydrate and deionized water to obtain a support layer precursor solution; mixing acrylic acid, lauryl methacrylate, N, N '-methylene bisacrylamide and the nanocellulose suspension, performing ultrasonic treatment to obtain a Pickering emulsion, adding a photoinitiator into the Pickering emulsion, and uniformly mixing to obtain an adhesion layer precursor solution; and pouring the support layer precursor solution into a mold, then slowly pouring the adhesion layer precursor solution onto the support layer precursor solution, carrying out ultraviolet curing, taking out from the mold, and cleaning to obtain the Janus conductive hydrogel. According to the method, the Pickering emulsion phase separation and the charge shielding effect are combined through a simple and convenient one-step method, and the problems that a traditional multi-layer assembly process is complex in operation and unstable in interface are effectively solved.

The invention discloses a preparation method of Pickering emulsion, the prepared Pickering emulsion and application of the Pickering emulsion. Comprising the following steps: mixing an aqueous solution containing chitin nano-bundles with an oil phase to obtain Pickering emulsion; the aqueous solution containing the chitin nano-beams is obtained by the following steps: reacting raw materials containing water, p-toluenesulfonic acid and chitin, and separating to obtain the aqueous solution containing the chitin nano-beams. And the lower-layer product obtained in the preparation of the nano chitin is utilized, so that the full-component utilization of the chitin is realized. The prepared Pickering emulsion has no oil-water separation phenomenon within 7 days.

The invention relates to a method for evaluating the richness of a nano-structure of micro-nano cellulose and application thereof, and the method comprises the following steps: 1) mixing a non-polar organic solvent and a micro-nano cellulose suspension, and dispersing to obtain a Pickering emulsion taking the micro-nano cellulose as a stabilizer; and 2) determining the anti-centrifugation capability of the Pickering emulsion, and evaluating the richness of the nano structure in the micro-nano cellulose based on the anti-centrifugation capability. The method disclosed by the invention is low in cost, relatively low in operation difficulty and relatively high in efficiency, and can be used for rapidly determining the richness of the micro-nano cellulose nanostructure.

The invention provides a protein-polysaccharide-polyphenol ternary complex used as a Pickering emulsifier and a preparation method of the protein-polysaccharide-polyphenol ternary complex. Specifically, the ternary complex is a complex formed by whey protein nanofibers and a pectin-polyphenol covalent complex. The ternary complex provided by the invention has very excellent interface stabilizer / active agent performance, and can be used as an emulsifier / interface stabilizer / interface active agent of Pickering emulsion.

The invention discloses a preparation method of krill oil microcapsule powder with high oil loading capacity, which comprises the following steps: S1, dissolving zein and an antioxidant into an ethanol solution to prepare a zein ethanol solution; s2, dispersing the solution in the step S1 into a sodium caseinate-anionic polysaccharide solution to prepare a zein / sodium caseinate-anionic polysaccharide particle dispersion liquid for loading the krill oil; s3, carrying out rotary evaporation on the particle dispersion liquid prepared in S2 to remove ethanol, adding purified water to supplement the volume lost by ethanol evaporation, adding krill oil, and homogenizing to prepare krill oil Pickering emulsion; and S4, mixing the krill oil Pickering emulsion prepared in S3 with a maltodextrin solution or a maltodextrin and gelatin solution, and performing spray drying to obtain micro-capsule powder. The micro-capsule powder is obtained by preparing the krill oil Pickering emulsion with excellent freeze-thaw stability and thermal stability and then performing spray drying on the krill oil Pickering emulsion and the auxiliary materials, and the prepared micro-capsule powder is good in stability.