173 results about "Pickering emulsion" patented technology

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 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 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.

The invention provides a rare ginsenoside high-internal-phase Pickering emulsion microcapsule, a preparation method thereof and application of the rare ginsenoside high-internal-phase Pickering emulsion microcapsule in the aspects of uric acid reduction and kidney protection, and the preparation method comprises the following steps: (1) mixing a pectin aqueous solution and a tannic acid aqueous solution, adjusting the pH value, and stirring to obtain pectin-tannic acid composite sol, namely a water phase; (2) adding rare ginsenoside into the oil, and stirring to fully dissolve the rare ginsenoside to obtain an oil phase; (3) mixing the water phase and the oil phase, stirring, standing and carrying out ultrasonic treatment to obtain a crude emulsion; (4) emulsifying and homogenizing the crude emulsion to obtain crude emulsion; (5) carrying out high-pressure homogenization on the crude emulsion, so as to obtain a rare ginsenoside high-internal-phase Pickering emulsion; and (6) drying the rare ginsenoside high internal phase Pickering emulsion, so as to obtain the rare ginsenoside high internal phase Pickering emulsion microcapsule. The invention solves the problems of low safety, poor stability and low bioavailability of the traditional nano-emulsion, and belongs to the technical field of functional foods.

This invention discloses a Janus particle crosslinking agent, a two-step preparation method, and its applications, belonging to the field of functional coating technology. The Janus particle crosslinking agent comprises SiO2 particles, one end of which is modified with a hydrophilic isocyanate group, and the other end with a low surface energy material, hydrogen-containing silicone oil. The Janus particle crosslinking agent with the hydrogen-containing silicone oil as the hydrophobic side can achieve directional arrangement, thereby imparting excellent hydrophobic properties to the coating. Utilizing the isocyanate group of the Janus particle crosslinking agent, it can not only exert its crosslinking effect in the coating but also stabilize the toluene / water Pickering emulsion. The two-step preparation method involves using hydrogen-containing silicone oil as a modifier to prepare J(SiO2·PMHS) particles via the Pickering emulsion interface method; then, using isocyanate propyltriethoxysilane as a modifier, a one-pot method is used to prepare the Janus particle crosslinking agent with the isocyanate group as the hydrophilic end and the hydrogen-containing silicone oil as the hydrophobic end. The isocyanate groups in the crosslinking agent are directly modified on one side of the Janus particles, thereby enabling them to play their crosslinking role in the coating and improving the wear resistance of the coating.

The application relates to the technical field of functional materials, and discloses a method for preparing a conductive polymer composite with the aid of quantum dots and the conductive polymer composite, which comprises the following steps: providing an oil phase solution comprising an organic solvent and a polymer and a water phase solution comprising water, quantum dots, reduced graphene oxide and carbon nanotubes; mixing the oil phase solution with the water phase solution, performing homogenization treatment, and obtaining a Pickering emulsion which can be stored stably for more than 30 days; freezing the Pickering emulsion at a preset temperature, then continuously injecting high-pressure CO2 at the preset temperature to remove the organic solvent, and then performing freeze-drying to remove water, so that a conductive polymer composite with an isolated conductive network structure and high conductivity is obtained; and the conductivity of the conductive polymer composite is as high as 240 S.m ‑1 .

The application discloses a Pickering emulsion based on ring-shaped colloidal particles, a preparation method thereof and application thereof in biphasic interface catalysis. The Pickering emulsion is an oil-in-water emulsion, which comprises a water phase, an oil phase and ring-shaped colloidal particles. The oil phase is dispersed in the water phase in the form of small droplets. The ring-shaped colloidal particles are located at an oil-water interface or at the oil-water interface and the water phase, and the ring-shaped colloidal particles are assembled to form a monolayer structure on the oil-water interface. The Pickering emulsion is not only beneficial to the contact between reactants or between the reactants and a catalyst, but also can enhance the interface mass transfer rate, promote the product to rapidly diffuse from one phase to another phase, has advantages of high conversion rate, high catalytic efficiency, simple product separation and the like, and has an important application prospect in the field of interface catalysis.

The application relates to the technical field of functional materials, and discloses a conductive polymer composite material and a preparation method thereof, which comprises the following steps: providing an oil phase solution comprising an organic solvent and a polymer, and a water phase solution comprising water, graphene oxide and carbon nanotubes; mixing the oil phase solution with the water phase solution, performing homogenization treatment, and then performing supercritical CO2 drying on the obtained graphene oxide stable Pickering emulsion to remove the organic solvent; then adding a reducing agent to perform a reduction reaction; and finally performing heating drying to remove water, so that the conductive polymer composite material is obtained. In the application, the carbon nanotubes are used as conductive fillers, the graphene oxide stable Pickering emulsion is used as a template, and the supercritical anti-solvent method is used to remove the organic solvent; then the graphene oxide is reduced into reduced graphene oxide with conductivity, and the reduced graphene oxide and the carbon nanotubes form double conductive fillers, so that the conductivity of the prepared conductive polymer composite material can reach 211 S.m ‑1 under the condition of low conductive filler content.

The invention discloses a Pickering emulsion with stable starch-myricetin composite nanoparticles and a preparation method of the Pickering emulsion, and belongs to the technical field of starch modification and emulsion delivery. Starch and myricetin are combined and compounded, a dynamic high-pressure microjet homogenization technology is introduced, the starch-myricetin composite nano-particles capable of stabilizing Pickering emulsion are obtained through a one-step method, and the application limitation that nano-starch is high in hydrophilicity, high in digestibility and the like is effectively solved; the prepared starch-myricetin composite nanoparticles have the characteristics of high stability and slow digestion function; the Pickering emulsion is prepared by further matching with a compound oil phase of coconut oil and cinnamon essential oil, so that the problem of coconut oil solidification can be effectively solved, and the Pickering emulsion has an antibacterial effect.

The invention discloses an interface molecularly imprinted polymer microsphere as well as a preparation method and application thereof, and relates to the technical field of functional polymer materials. The preparation method comprises the following steps: firstly, enabling template molecules to react with a silane coupling agent to form a template molecule compound; and then anchoring the template molecule compound on the surface of SiO2 particles, so that the template molecule compound simultaneously plays the dual roles of a stabilizer and an imprinting template in Pickering emulsion polymerization. And after the polymerization is completed, removing the template molecule modified SiO2 particles to obtain the polymer microspheres of which the imprinting sites are completely exposed on the surfaces of the microspheres. Molecular imprinting sites of the microspheres are uniformly distributed on the surface and are in an open and highly accessible state, so that the recognition rate and the binding capacity of target molecules are remarkably improved, and the microspheres have excellent selective enrichment and separation performance on target analytes; a reliable technical path is provided for practical application of the molecularly imprinted material in the fields of solid-phase extraction, sensing detection, medicine purification and the like.

The invention provides a Pickering emulsion with stable phycocyanin-rosmarinic acid conjugate and application of the Pickering emulsion in a surimi product, and the Pickering emulsion is characterized in that PC-Ra prepared by oxidizing rosmarinic acid with laccase and then covalently conjugating with phycocyanin is used as an emulsifier, corn oil is used as an oil phase, and five groups of emulsions from PC-Ra20 to PC-Ra40 are prepared through homogenization. The emulsion is added into surimi in proportion, and the surimi product is prepared through chopping and mixing, sausage filling and two-stage heating and can be used as a fat substitute to effectively fill and strengthen a gel three-dimensional network. Experiments show that the emulsion can overcome the gelation defect of the surimi caused by direct addition of grease, the PC-Ra30 group has the optimal effect, the gelation strength and the water binding capacity of the surimi can be remarkably improved, the cooking loss is reduced, and lipid is effectively delayed; according to the invention, bioactive components are combined with an emulsion technology, and an effective solution is provided for developing high-quality and high-added-value green surimi products.

The application discloses a supramolecular lotus leaf peptide-narcotic alkaloid Pickering emulsion as well as a preparation method and application thereof. The water phase of the supramolecular lotus leaf peptide-narcotic alkaloid Pickering emulsion is a purified lotus leaf peptide aqueous solution, and the oil phase is camellia seed oil loaded with narcotic alkaloids. The camellia seed oil not only serves as a fat-soluble carrier to improve the solubility of the narcotic alkaloids, but also has nursing effects due to the unsaturated fatty acids, vitamin E and phytosterols contained therein. The supramolecular assembly technology is used to mediate the lotus leaf peptide and the narcotic alkaloids to form high-performance emulsified particles, to replace synthetic surfactants to stabilize the Pickering emulsion, and to construct a natural emulsion system with high emulsification efficiency, high stability and high performance, so that the performance and the nursing effect of the emulsion are optimized.

The application discloses an oil-in-water gel Pickering emulsion, a preparation method and application, and comprises the following steps: step 1, dispersing liquid oil and beeswax to obtain an oil gel; step 2, adding nanocellulose whiskers into a sodium alginate solution, and fully mixing to obtain an aqueous phase solution; wherein the mass ratio of the sodium alginate and the nanocellulose whiskers is 2-10:5; step 3, fully mixing and dispersing the oil gel in step 1 and the aqueous phase solution in step 2 to obtain the required oil-in-water gel Pickering emulsion; the oil-in-water gel Pickering emulsion obtained by adding the sodium alginate and the modified CNW as emulsifiers has a significantly improved ability of embedding and delivering curcumin, and the chemical stability and the bio-accessibility of the curcumin are improved.

The invention relates to the technical field of Pickering emulsion preparation, and discloses a functionalized mesoporous silicon particle, a Pickering emulsion as well as a preparation method and application of the Pickering emulsion. The functionalized meso-porous silicon particles comprise meso-porous silicon particles and silicon dioxide shell layers coating the surfaces of the meso-porous silicon particles; wherein an ultraviolet filtering agent is loaded in the meso-porous silicon particles. The functionalized meso-porous silicon particle provided by the invention not only reduces free radicals generated by photodegradation of an ultraviolet filtering agent by 89.3%, effectively overcomes the contradiction of'protection-damage 'in traditional ultraviolet protection, but also reduces the wettability of the particle from 114.7 degrees to 89.6 degrees, so that the particle has excellent emulsion stability and ultraviolet shielding function, and meanwhile, the functional meso-porous silicon particle can be applied to the field of ultraviolet protection. The secondary silicon layer packaging also reduces the leakage of the ultraviolet filtering agent; when the functionalized meso-porous silicon particle is used as an emulsifier for preparing a Pickering emulsion carrying a photosensitive active matter, a corresponding ultraviolet filtering agent is matched aiming at a sensitive wave band (UVA or UVB) of the photosensitive active matter, so that customized and high-efficiency light protection is realized.

The application discloses a DHA gel soft candy with high oxidation stability and a preparation method thereof, and belongs to the technical field of health-care food. The preparation method specifically comprises the following steps: (1) Pickering particle dispersion liquid preparation; (2) Pickering emulsion preparation; and (3) DHA gel soft candy preparation. The innovation of the application is that the Pickering emulsion is introduced into the traditional soft candy to form a double-layer encapsulation system, realize high oxidation stability of functional oil and grease, and upgrade the production technology of the traditional soft candy. The key points are as follows: ① good stability, no oil seepage and no stratification of the Pickering emulsion within a shelf life of 6 months, and no oil outflow phenomenon of the soft candy; and ② flavor optimization (effective masking of fishy smell), formation of a complete double-layer encapsulation system and reduction of the release of fishy smell substances.

The present application relates to the preparation field of organic polymer monolithic column, in particular to a kind of double-continuous supermacroporous cellulose / polystyrene composite monolithic column and its preparation method and application.Firstly, O / W Pickering emulsion is prepared using modified cellulose nanocrystal (CNC), and Janus CNC-PS with single side grafted polystyrene (PS) polymer brush is prepared by electron activation regeneration-atom transfer radical polymerization (AGET-ATRP) reaction system, and double-continuous phase emulsion gel (Bijel) is prepared by one-step stirring method using Janus CNC-PS with different HLB values as stabilizer.Then, double-continuous supermacroporous cellulose / polystyrene composite monolithic column is obtained by in-situ active polymerization through AGET-ATRP reaction using Janus CNC-PS as macromolecular initiator and Bijel as emulsion template.The obtained monolithic column has uniform skeleton structure, double-continuous skeleton and pore, high mechanical strength, and the unmodified side of CNC covers the outer surface of skeleton, so that the pore surface has hydrophilicity and is easy to modify.The monolithic column effectively overcomes the defects of current polymer monolithic column, such as poor biocompatibility, low mechanical strength and low specific surface area, and has great application potential in the field of enzyme and cell immobilization and biomacromolecule separation and analysis.

This invention discloses a Pickering emulsion gel based on drug-excipient integration, its preparation method, and its application. The method includes: adding ethylene glycol chitosan to a whey protein solution, stirring until homogeneous, then adding glycyrrhizin and stirring to obtain a whey protein-ethylene glycol chitosan-glycyrrhizin composite solution; mixing Gastrodia elata volatile oil and clove oil, and ultrasonically homogenizing to obtain an oil phase; adding the oil phase to the whey protein-ethylene glycol chitosan-glycyrrhizin composite solution, and emulsifying by high-speed shearing to obtain an emulsion; then refrigerating the emulsion to induce whey protein denaturation and gelation, forming a Pickering emulsion gel. Based on the concept of "drug-excipient integration," this invention uses whey protein as a particle stabilizer and the main active ingredients, Gastrodia elata volatile oil and clove oil, as the mixed oil phase, reducing the amount of excipients. Through screening the aqueous phase of the emulsion gel, the prepared Pickering emulsion gel has a dense texture, high stability, and a sustained-release effect on the active ingredients, achieving a long-lasting sleep-improving effect.

The invention discloses a preparation method of zein-starch Pickering emulsion loaded with daidzein and relates to the technical field of emulsion preparation, waxy corn starch is subjected to enzymolysis through pullulanase and is applied to emulsion construction, and the emulsion with good stability is researched to realize efficient loading. The invention also discloses a zein-short amylose composite nanoparticle, a preparation method of a Pickering emulsion stabilized by the composite nanoparticle, and the Pickering emulsion stabilized by the composite nanoparticle. The Pickering emulsion with stable composite nanoparticles prepared by the invention has the characteristics of high stability and high safety, and provides a substitute with a good application prospect for the transportation of a bioactive substance daidzein.

The invention belongs to the technical field of biological medicine, and particularly relates to a Pickering emulsion with stable protein-polyphenol coating modified particles and a preparation method and application thereof.The preparation method comprises the following steps that protein and polyphenol are used for modifying solid particles, and the protein-polyphenol coating modified particles are obtained; dispersing the protein-polyphenol coating modified particles in water to obtain a dispersion liquid of the protein-polyphenol coating modified particles; and mixing the dispersion liquid with an oil phase, and carrying out high-speed homogenization or ultrasonic emulsification to obtain the Pickering emulsion. By adopting the preparation method to effectively modify the solid particles, not only can the inherent properties of the solid particles and the structure and function of protein be maintained, but also the Pickering emulsion prepared from the modified particles is uniform in droplet size and has excellent storage stability, and the service life of the Pickering emulsion is prolonged. The antioxidant and anti-inflammatory characteristics of polyphenol and the catalysis functions of protein are realized.

The invention relates to a cutting fluid prepared by combining a Pickering emulsion with MXene and a preparation method of the cutting fluid. The cutting fluid is prepared from an MXene nanosheet and a Pickering emulsion, the concentration of the MXene nanosheet in the Pickering emulsion is 0.1 to 0.3 weight percent, and the concentration of the MXene nanosheet in the Pickering emulsion is 0.1 to 0.3 weight percent; the Pickering emulsion is prepared from natural Pickering particles, vegetable oil and water, the content of the natural Pickering particles in the Pickering emulsion is 0.01 mol / L to 0.03 mol / L, and the concentration of the vegetable oil in the Pickering emulsion is 5 wt% to 20 wt%. According to the invention, the vegetable oil with excellent lubricating property and biodegradable property is creatively used as a footstone, and natural Pickering particles are blended as a stabilizer, so that a Pickering emulsion system is constructed; mXene is introduced, so that the novel, efficient and environment-friendly cutting fluid is successfully prepared. A novel, efficient and environment-friendly cutting fluid solution is provided for the modern manufacturing industry, and green and sustainable development of the manufacturing industry is promoted.

The invention discloses a preservative film agent and a preparation method thereof, and belongs to the technical field of preservation. The preservative film agent comprises the following raw materials: polyvinyl alcohol, hydroxy propyl cellulose, glycerol and an antibacterial agent, wherein the antibacterial agent is a cinnamyl aldehyde-loaded Pickering emulsion; a Pickering emulsion is dispersed in a PVA / HPC composite film agent, and a solvent pouring method is adopted to prepare the composite film with antibacterial performance. According to the invention, polyvinyl alcohol and hydroxy propyl cellulose are selected to form a film together so as to overcome the defects of a traditional film agent, and the cinnamyl aldehyde-loaded Pickering emulsion is dispersed in a composite film agent prepared from PVA / HPC, so that the comprehensive preservative film agent with good preservation effect and antibacterial ability is obtained.

This application relates to the field of food processing technology, specifically to a zein-based oleogloss with a polyphenol self-assembled coating, its preparation method, and its application. The preparation method includes the following steps: dissolving zein in an ethanol-water solution, adjusting the pH to 10-12 for pretreatment, and removing the ethanol by heating and stirring at 30-50°C to obtain a zein dispersion; first adding epigallocatechin gallate, then adding Ca... 2+ A composite particle dispersion was prepared; the composite particle dispersion was mixed with liquid oil to prepare a Pickering emulsion, which was then dried in the dark with cold air to obtain a solid fat; the solid fat was dispersed to prepare a zein-based oleogel based on a polyphenol self-assembled coating; zein, Ca... 2+ The ratio of epigallocatechin gallate to ethyl gallate is 2g:0.05mmol:0.05mmol. The preparation method described in this application is simple and environmentally friendly, suitable for mass production. The prepared zein-based oleogel exhibits good stability, strength, and resistance to deformation, and is not easily oxidized.

The present application belongs to the field of food technology, and particularly relates to a Pickering emulsion containing menthol and a preparation method thereof. The Pickering emulsion containing menthol is prepared by taking menthol and cyclodextrin composite particles as a solid particle emulsifier and soybean oil as an oil phase, and the mass ratio of the menthol to the cyclodextrin is 1:2-5. The Pickering emulsion containing menthol prepared by the present application exhibits good storage stability and rheological properties within 30 days, and in addition, the emulsion also exhibits excellent antioxidant and antibacterial properties. In an in vitro simulated digestion experiment, the release rate of free fatty acids in the emulsion in the small intestine is 76.64+ / -1.08%, and the emulsion has good sustained-release property and improves the bioavailability of menthol.

The invention discloses long-acting slow-release antibacterial preservative paper based on Pickering emulsion and a preparation method of the long-acting slow-release antibacterial preservative paper. The long-acting slow-release antibacterial preservative paper comprises a paper-based carrier and an antibacterial functional layer, wherein the surface of the paper-based carrier is coated with the antibacterial functional layer; the antibacterial functional layer is formed by mixing a Pickering emulsion and a polyvinyl alcohol / gelatin composite base material to form a film; the Pickering emulsion is prepared by taking Tempo oxidized nanocellulose and ethyl lauroyl arginate hydrochloride water suspension as a water phase and performing ultrasonic emulsification on the water phase and origanum vulgare essential oil according to an oil-water volume ratio of 1: 9; wherein the mixing ratio of the Pickering emulsion to the composite base material is (30 to 50): 50; the mass percent concentration of the Tempo oxidized nanocellulose in the water-phase suspension liquid is 0.2 wt%, and the mass percent concentration of the ethyl lauroyl arginate hydrochloride in the water-phase suspension liquid is 0.01 wt%. Through material innovation and process optimization, the antibacterial property, the slow release property, the environmental protection property and the industrial application are remarkably superior to those of the prior art, and an efficient and reliable solution is provided for green packaging in the fields of food, medicine and the like.

This invention relates to a self-triggered demulsification Pickering emulsion cascade catalytic system, its preparation method, and its application. The preparation method includes: preparing Fe3O4 magnetic nanoparticles by co-precipitation; coating their surface with a SiO2 shell using a modified Stöber method to obtain Fe3O4@SiO2 core-shell nanoparticles; simultaneously grafting a triamine silane coupling agent and octyltrimethoxysilane onto the Fe3O4@SiO2 surface using a one-pot method to obtain magnetic amphiphilic nanoparticles; dividing the magnetic amphiphilic nanoparticles into two batches, and immobilizing glucose oxidase and Candida antarcticis lipase B respectively via EDC / NHS-mediated amide coupling reaction to obtain nanoparticle catalysts; using the nanoparticle catalysts as solid emulsifiers in Pickering emulsions to construct an oil-water two-phase cascade catalytic system, realizing a cascade catalytic reaction of glucose oxidation – peracidification – olefin epoxidation; utilizing the accumulation of gluconic acid during the reaction to lower the pH, triggering emulsion demulsification, achieving product separation and magnetic recovery of the nanoparticle catalysts.

The invention discloses a method for continuously catalyzing grease deacidification, which comprises the following steps: mixing a deep eutectic solvent, crude oil and immobilized lipase, homogenizing into an emulsion, continuously supplementing the crude oil, and carrying out esterification deacidification reaction, the immobilized lipase is obtained by carrying out immobilization by taking silane modified silicon dioxide as a carrier. According to the method, grease deacidification can be continuously catalyzed, the cost of enzymatic deacidification is reduced, the grease yield is increased, better economical efficiency and environmental friendliness are achieved, the industrial application potential is high, and after crude oil is deacidified through the method, the acid value is low, the deacidification rate is high, the neutral oil loss is small, and the oil product stability is good.

The present application relates to a kind of preparation method of plant composition with hair-nourishing effect, belong to hair-washing composition field, including the following mass parts raw materials: 30-40 parts modified pickering emulsion, 15-25 parts compound surfactant system, 15-30 parts goat milk, 1-3 parts avocado seed extract, 5-7 parts hydroxypropyl methyl cellulose and 80-100 parts deionized water;White hedyarium alcohol, carvacol, fermented ring grass extract, ganoderma extract, ginger extract, cypress leaf extract are loaded using modified starch, so that plant extract can better play a role in system, promote the absorption of scalp to plant extract;By adding goat milk and part of plant extract synergistically, while using stabilizer, increase the viscosity and stability of system, inhibit the denaturation of protein in goat milk and the stability of plant extract component.

This invention belongs to the field of oil and salt reduction technology in food processing, and discloses a Pickering emulsion with dual oral pH and enzyme responses, its preparation, and its application in oil and salt reduction. The Pickering emulsion comprises an outer aqueous phase, an oil phase, and an inner aqueous phase, homogenized by high-speed shearing. The outer aqueous phase is an aqueous solution containing 0%-5% sodium chloride and 2%-5% oxidized starch-gelatin nanoparticles; the oil phase is a mixture of edible oil and polyglycerol ricinoleic acid ester; and the inner aqueous phase is a sodium chloride aqueous solution with a mass fraction of 2%-10%. The emulsion constructed by this invention can release 90%-94% of sodium ions in the oral cavity. When added to sauces, it can reduce the amount of sodium chloride added by 20% while maintaining the perception of saltiness. Furthermore, while "reducing salt without reducing saltiness," it also has good oral lubrication properties and can replace 14.7%-20% of the added oil, showing good application prospects in reducing oil in food seasoning sauces.

The invention belongs to the technical field of emulsion gel preparation, and discloses stable high-internal-phase Pickering emulsion gel only based on ellagic acid particles and 3D printing application of the stable high-internal-phase Pickering emulsion gel. The preparation method of the emulsion set comprises the following steps: dispersing ellagic acid powder in water, performing ultrasonic treatment to obtain a suspension, then centrifuging the suspension, collecting supernate, and drying to obtain ellagic acid nanoparticles; weighing the ellagic acid nano-particles, putting the ellagic acid nano-particles into a non-polar solvent, and mixing to obtain an oil dispersion liquid of the ellagic acid nano-particles; and mixing the prepared oil dispersion liquid with water, and carrying out high-speed shearing emulsification to obtain the stable high-internal-phase Pickering emulsion gel only based on ellagic acid particles. According to the invention, the single ellagic acid nanoparticles are used as a stable medium for the first time, so that the process complexity and safety risk caused by multi-component compounding are avoided, and the simplification and greenization of system components are realized.

The application discloses a kind of high oil load mutton oil powder grease and its preparation method, belong to food processing technical field.The method is as follows: (1) preparation gelatin solution, join nanocellulose stirring to obtain composite liquid, then adjust pH, the non-ionic cellulose ether of addition is carried out high pressure homogenization to obtain suspension, then dry to obtain nanocomposite particle;(2) the nanocomposite particle in step (1) is dispersed in water as aqueous phase system, mutton oil is added as oil phase in aqueous phase and is sheared, high pressure homogenization obtains mutton oil pickering emulsion;(3) the mutton oil pickering emulsion of step (2) is added in plant polyphenol, and the modified mutton oil pickering emulsion is obtained;(4) the modified mutton oil pickering emulsion in step (3) is spray dried to obtain mutton oil powder grease.The application makes the oil load of mutton oil powder grease reach 90% without adding any small molecule surfactant, and mutton oil powder grease has good rehydration.