55results about How to "High embedding rate" patented technology

The invention discloses biphase gel loaded with natural antioxidants as well as a preparation method and application of the biphase gel. The biphase gel is obtained by mixing oil gel and hydrogel in a mass ratio of (20: 80)-(80: 20) through a physical effect, wherein the hydrogel is composed of a water-soluble natural antioxidant and a polysaccharide aqueous solution; the oleogel is composed of an oleogel agent, a fat-soluble natural antioxidant, a small molecule emulsifier and edible oil. According to the present invention, the water-soluble nutrients are loaded in the hydrogel, and the fat-soluble nutrients are loaded in the oil gel to prepare different types of the two-phase gel nutrient delivery systems simultaneously loading the hydrophilic and hydrophobic natural antioxidants so as to effectively improve the steady-state protection effect and the bioavailability of the nutrients.

The invention discloses a method for preparing microcapsules from beta-cyclodextrin inclusion compound microcrystal stabilized sandalwood essential oil, and belongs to the technical field of microcapsule preparation. The method comprises the following steps: preparing sandalwood essential oil / beta-cyclodextrin inclusion compound microcrystals, emulsifying and dispersing the sandalwood essential oil by using the inclusion compound microcrystals as an emulsifier, adding resin, and carrying out a condensation reaction to prepare the microcapsule suspension. According to the preparation method, firstly, beta-cyclodextrin and essential oil are embedded to obtain clathrate microcrystals, then the clathrate microcrystals serve as an emulsifying agent, the emulsifying effect of the essential oil is improved, resin microcapsules are convenient to prepare, and the microcapsules prepared through the method are high in essential oil embedding rate and good in stability; beta-cyclodextrin inclusion compound microcrystals are selected as a Pickering emulsion stabilizer, so that the emulsifying and stabilizing effects are good, and the microcapsule emulsion is not layered.

The invention discloses a slow-release temperature-controlled antifouling agent microsphere and a preparation method and application thereof, the method comprises the following steps: (1) mixing sodium alginate, copper pyrithione and a CaCl2 solution for reaction, freeze-drying, grinding and crushing to prepare intermediate product particles; and (2) mixing the intermediate product particles in the step (1) with a chitosan solution for reaction, then adding a glutaraldehyde solution for continuous reaction, and freeze-drying to obtain the antifouling agent microspheres. The sodium alginate and chitosan double-crosslinking preparation method adopted by the invention is novel, a double-layer drug-loading structure is constructed by virtue of the crosslinking effect of sodium alginate and calcium ions and the electrostatic interaction between anions and cations of sodium alginate and chitosan, and the thought is novel.

The invention belongs to the technical field of probiotics, and particularly relates to a probiotic microcapsule with digestion resistance and adhesion as well as a preparation method and application of the probiotic microcapsule. According to the preparation method of the probiotic microcapsule with digestion resistance and adhesion, polyphenol, metal ions, soybean protein isolate and xanthan gum are adopted as wall materials, a polyphenol-metal ion complex coating and a complex coacervation system are constructed, and the microcapsule with a double-layer packaging structure is formed. According to the invention, through complexing of tannic acid and iron ions, a uniform coating is firstly formed on the surface of the probiotics, so that the adhesion is improved, and the packaging rate of the probiotics is improved. Meanwhile, the soybean protein isolate and the xanthan gum have a synergistic effect by utilizing the high stability of the soybean protein isolate and the xanthan gum, so that the activity of the probiotics in the storage period is effectively protected, high-quantity protection on the probiotics in a simulated digestion environment can be effectively realized, the probiotics enter intestinal tracts with high stock and high activity and are subjected to high-quantity colonization, and the probiotics are suitable for being developed and applied in probiotic preparations.

The invention belongs to the technical field of sustained-release microcapsules, and particularly discloses a ganoderma triterpenoid sustained-release microcapsule and a preparation method thereof.Bovine serum albumin and octenyl succinic anhydride modified starch are selected to prepare a Maillard product through a carbonyl ammonia condensation method to serve as a wall material, and a core material ganoderma triterpenoid is well wrapped in the wall material; the Maillard reaction product and the ganoderma triterpenoid are crosslinked, the structure of the freeze-dried microcapsule is not damaged, and the prepared granular microcapsule is complete in structure, high in embedding rate and good in stability. The sustained release performance of the ganoderma triterpenoids as an embedding material is improved, the water solubility of the ganoderma triterpenoids is improved, the dissolution speed and the intestinal mucosa permeability of the ganoderma triterpenoids are improved through conjugation change of polymer characteristics, the retention time is prolonged through biological adhesion, the oral bioavailability of the ganoderma triterpenoids is improved, and the bioavailability of the ganoderma triterpenoids is improved. The human body absorption and utilization degree of the ganoderma triterpenoids can be obviously improved.

The invention belongs to the technical field of bacteriostatic agents, and particularly relates to lemongrass essential oil microcapsules, a preparation method thereof, a bacteriostatic agent and application. The preparation method comprises the following steps: by taking lemongrass essential oil as a core material and Arabic gum and beta-cyclodextrin as wall materials, mixing the lemongrass essential oil, the Arabic gum and the beta-cyclodextrin, and preparing the lemongrass essential oil micro-capsule by adopting a spray drying method; the mass ratio of the Arabic gum to the beta-cyclodextrin is (0.5-2): 1, and the mass ratio of the total amount of the Arabic gum and the beta-cyclodextrin to the lemongrass essential oil is (4-6): 1. And then mixing the lemongrass essential oil microcapsules with starch and ethanol, granulating and drying to obtain the antibacterial patch. The lemongrass essential oil microcapsule disclosed by the invention is stable in quality, the action time of the lemongrass essential oil is prolonged, the purpose of long-acting bacteriostasis is achieved, and the technical defect of short action time of a lemongrass essential oil antibacterial agent in the prior art is overcome.

The invention discloses fish oil microcapsules and a preparation method thereof. The fish oil microcapsules are composed of the following components in weight: 5-15 parts of fish oil, 6-35 parts of composite wall materials and 0.2-2 parts of emulsifiers, and the water content is 1.5-2.0wt% based on the total mass of the microcapsules; wherein the composite wall materials contain 5-20 parts of rosemary extract. The microcapsules have the advantages of high embedding rate, simple preparation process, strong antioxidant activity and almost no fishy smell.

The invention belongs to the technical field of microecological preparations, and particularly provides a microcapsule wall material which comprises the following components in percentage by mass of water: 4-6% of denatured protein, 1.5-2.5% of sodium alginate and 1.5-2.5% of calcium carbonate. The protein comprises at least one of whey protein isolate and soybean protein isolate. Based on the microcapsule wall material, the invention provides the acid-resistant, cholate-resistant and heat-resistant lactic acid bacteria microcapsule and the preparation method thereof. According to the microcapsule wall material provided by the invention, the protein raw material is subjected to denaturation pretreatment and then is compounded with the sodium alginate and the calcium carbonate, so that compared with the traditional wall material sodium alginate, the microcapsule wall material provided by the invention has the advantages that the embedding rate and the stability can be improved, and the acid resistance, cholate resistance, heat resistance and storage stability of an embedded product are also greatly improved.

The invention relates to a perfluorohexanone nano microcapsule multi-time fire extinguishing tablet and a preparation method thereof, and belongs to the technical field of fire extinguishing material processing. The invention discloses a preparation method of a perfluorohexanone nano microcapsule multi-time fire extinguishing tablet. The preparation method comprises the following steps: (1) preparing an oil phase for later use; (2) preparing a water phase for later use; (3) stirring the oil phase and the water phase at a high speed to obtain an emulsion; and (4) adding an initiating monomer into the emulsion, heating, preserving heat, filtering, washing and drying to obtain the perfluorohexanone nano microcapsule. And (5) mixing with a base material, introducing into a mold, curing, drying, and spraying a high-molecular polymer on the surface to obtain the perfluorohexanone nano microcapsule multi-time fire extinguishing tablet. According to the perfluorohexanone nano microcapsule, lignin-based polyurethane is used as an outer shell, a polyurea / polyurethane composite structure is used as an inner shell to form a double-shell structure, and therefore the perfluorohexanone nano microcapsule prepared through the method has a compact and stable capsule wall structure, the embedding rate is high, and the fire extinguishing property is excellent.

The invention relates to the technical field of biology, in particular to a double-layer microcapsule of ackermania mucilaginosa and prebiotics and a preparation method thereof.The double-layer microcapsule is prepared from bacteria and mixed gum, the weight ratio of the bacteria to the mixed gum is 1: 5, the bacteria are ackermania mucilaginosa, and the mixed gum comprises sodium alginate, carob gum or xanthan gum; the embedding rate of the microcapsule is 91.00%-96.14%, the survival rate is obviously improved, and the protection capability on strains is improved; under the three storage temperatures, the survival rate of the microcapsule embedded bacterial strain added with the prebiotics is obviously higher than that of the microcapsule without the prebiotics under the same condition.

The utility model discloses a microcapsule spray dryer for producing emulsified powder essence, which realizes vertical circulating stirring of raw materials in a material storage tank through the rotary motion of a spiral conveying shaft in a material guide barrel; the spiral conveying shaft pumps the raw materials located on the lower portion of the material storage tank upwards along the material guide barrel, then the raw materials flow back through the upper end of the material guide barrel, and circular flowing of the raw materials in the vertical space is achieved. Therefore, the phenomena of local deposition and layering of the raw materials in the storage tank are avoided. Especially for emulsion with large density difference between the wall material and the core material, layering phenomena such as wall material sedimentation and core material oil phase floating are effectively prevented, the uniformity and the stability of the raw materials in the storage process are remarkably improved, and then the embedding rate and the structural integrity of the microcapsule are improved.

The invention discloses essential oil microcapsule powder with high oil loading capacity and a preparation method thereof, and belongs to the technical field of microcapsules, the preparation method comprises the following steps: preparing a gelatin aqueous solution, preparing an Arabic gum aqueous solution, preparing an Arabic gum-starch aqueous solution, preparing a chitosan-tannic acid aqueous solution, preparing an emulsion, and performing primary crosslinking. Performing secondary crosslinking; the essential oil microcapsule powder prepared by the invention not only has high oil loading capacity and low surface oil content, but also has excellent slow release performance, solubility, long-term controlled release performance and flowability, and is uniform in particle size distribution.

The invention belongs to the technical field of microorganisms, and particularly relates to application of bifidobacterium animalis subsp. Lactis in improvement of osteoporosis. The bifidobacterium animalis subsp. Lactis BL-136 provided by the invention is preserved in Guangdong Microbial Culture Collection Center, the preservation number is GDMCC No: 67831, and verification proves that the strain has excellent capability of inhibiting osteoclast differentiation and has obvious application advantages in the aspect of relieving osteoporosis. The microgel preparation prepared from the strain can play an excellent role in relieving the osteoporosis, and the curative effect on the osteoporosis is remarkably improved. Therefore, the invention proves the curative effect of the bifidobacterium animalis subsp. Lactis BL-136 and the microgel preparation thereof in the aspect of relieving the osteoporosis, and scientific thinking and technical support can be provided for the development of medicines for treating the osteoporosis.

The invention discloses a preparation method of a balanced polyunsaturated fatty acid pumpkin seed oil-multi-element probiotic composite microcapsule, and relates to the technical field of biological materials. Comprising a composite microcapsule, and the composite microcapsule takes mixed pressed oil and probiotics as a core material and takes a whey protein and Arabic gum mixture as a wall material; the core material is embedded in the wall material; the mixed pressed oil comprises pumpkin seed oil and linseed oil; the preparation method comprises the following steps: S1, preparing balanced polyunsaturated fatty acid mixed pressed oil; s2, preparing a microcapsule wall material; s3, activating and preparing the probiotics; and S4, preparing the microcapsule. According to the preparation method of the microcapsule, probiotics are delivered to a target position, and the microcapsule is helpful for establishing a stable bacterial colony of an intestinal tract.

The application discloses a salicylic acid-cyclodextrin-amino acid ternary inclusion compound and a preparation method thereof. The salicylic acid-cyclodextrin-amino acid ternary inclusion compound is formed by non-covalent bond interaction of salicylic acid, amino acid and cyclodextrin derivatives, wherein the cyclodextrin derivative is a cross-linked beta-cyclodextrin polymer, wherein the salicylic acid molecules are included in the cavity of the cross-linked beta-cyclodextrin polymer, and meanwhile, the guanidino group or carboxyl group of the amino acid side chain interacts with the hydroxyl group outside the cross-linked beta-cyclodextrin polymer or the exposed part of the salicylic acid molecules after inclusion. The application uses the cross-linked beta-cyclodextrin polymer and introduces arginine as a synergist to construct a salicylic acid-cross-linked beta-cyclodextrin polymer-arginine ternary inclusion compound, and through charge neutralization and hydrogen bond network synergistic effect, the inclusion efficiency is significantly improved, and the water solubility of salicylic acid is improved.

This invention discloses an apple pomace ESP-Zein-lutein composite nanoparticle delivery system and its preparation method, belonging to the field of functional food carrier and bioactive substance delivery technology. ESP is purified from apple pomace through hot water extraction, TCA deproteinization, and dialysis decolorization. Combined with antisolvent precipitation and electrostatic adsorption technology, composite nanoparticles with uniform particle size and high stability are prepared. The optimized ratio is Zein:ESP:lutein = 1:0.4:0.08. In this system, Zein and lutein form a hydrophobic core, and ESP forms a shell through hydrogen bonding and electrostatic interactions. The lutein encapsulation rate reaches 90.5%, significantly higher than the 54.7% of the single Zein system, making it suitable for targeted delivery of functional food additives, antioxidants, and eye health-related products.

This invention discloses a method for preparing a pomegranate-shaped polysaccharide microgel-encapsulated fragrance oil microcapsule carrier complex. Using melamine-formaldehyde resin as the wall material and fragrance oil as the core material, MF microcapsules are prepared via in-situ polymerization. Then, sodium alginate microspheres are used to further encapsulate the MF microcapsules, forming a fragrance carrier complex with a pomegranate-shaped structure. This invention significantly improves the encapsulation rate and thermal stability of the fragrance oil by optimizing process parameters such as shear rate, SMA concentration, oil-water ratio, curing temperature and time, shell-core ratio, and pH value. The fragrance carrier complex prepared by this invention exhibits excellent retention and sustained-release properties, effectively solving the problems of low retention and easy detachment of traditional MF microcapsules in reconstituted tobacco, and providing a new technical solution for the efficient utilization of tobacco flavorings.

The invention relates to an O1 / W / O2 type double emulsion as well as a preparation method and application thereof. The O1 / W / O2 type double emulsion comprises an inner-layer oil phase O1, a middle-layer water phase W and an outer-layer oil phase O2, the inner-layer oil phase O1 comprises essence and a first solvent; the middle layer water phase W comprises a water-soluble emulsifier and water; the outer-layer oil phase O2 comprises an oil-soluble emulsifier and a second solvent; the water-soluble emulsifier comprises a combination of flaxseed gum, whey protein isolate and Tween 80. The emulsion provided by the invention has the advantages of simple, cheap and easily available raw materials, simple preparation method and low cost; the obtained emulsion improves the stability of the essence, the essence loading rate is high, the essence has good fragrance loading and holding performance, and controlled release of the loaded essence can be achieved through temperature change.

The present invention discloses a polysaccharide-protein-based co-assembly for efficiently loading curcumin, and a preparation method and application thereof, and belongs to the technical field of functional food processing. The present invention first prepares a protein-based co-assembly loaded with curcumin by a pH cycle strategy, and then covers a pectin coating on the surface of the protein-based co-assembly by polyelectrolyte surface deposition to prepare a polysaccharide-protein-based co-assembly loaded with curcumin. The polysaccharide-protein-based co-assembly loaded with curcumin prepared by the present invention can realize efficient loading of curcumin, and can effectively improve the in vitro antioxidant activity of curcumin and the bioaccessibility after simulated gastrointestinal digestion. At the same time, the preparation process is simple and low in energy consumption, which meets the requirements of green, low-carbon and sustainable development concepts. The present invention expands the application scope of fat-soluble polyphenols such as curcumin in the field of food processing; improves the added value of tilapia protein isolate, and promotes the development of tilapia deep processing industry.

This invention, entitled "A Low-Loss β-Carotene Microcapsule and Its Preparation Method," belongs to the field of microcapsule preparation technology. The technical problem to be solved is that during high-temperature melting, particulate all-trans β-carotene transforms into a molecular state, but this process generates a large number of cis isomers and results in significant content loss. Furthermore, the particle size and dispersibility of the particulate β-carotene prepared by grinding are still unsatisfactory, leading to low bioavailability and poor application effects. The key point of this technical solution is to prepare high all-trans molecular β-carotene microcapsules through a specific combination of treatments. This reduces content loss and cis-trans isomerization during the transformation of β-carotene from particulate to molecular state, thereby significantly improving the bioavailability of β-carotene microcapsules. Moreover, the preparation process is simple, cost-controllable, and suitable for large-scale industrial production.

The invention specifically discloses a myofibrillar protein-sunflower seed oil-high M type alginic acid ternary composite probiotic microcapsule and a preparation method thereof, and belongs to the technical field of food. Myofibrillar protein and sodium alginate are used as inner wall materials, gelatin and sunflower seed oil are used as outer wall materials, and lactobacillus acidophilus is embedded in a double-layer mode through electrostatic interaction. The specific preparation method comprises the following steps: mixing a bacterial suspension with the composite wall material, dropwise adding the mixture into pure water, and carrying out ultrasonic curing, dewatering and vacuum freeze drying to obtain the microcapsule. The microcapsule prepared by the invention has a good embedding rate, can play a role in protection and slow release in a simulated digestion process, improves the thermal stability and storage stability of probiotics, and has a wide application prospect.

The application discloses a preparation method and application of cassava starch-beta-cyclodextrin nanoparticles embedding gamma-aminobutyric acid, and the preparation method comprises the following steps: step one, preparing nanoparticles by using a cassava starch suspension and beta-cyclodextrin, and then preparing a solution; step two, preparing a gamma-aminobutyric acid solution; and mixing the prepared gamma-aminobutyric acid solution with the nanoparticle solution in step one. The gamma-aminobutyric acid cassava starch-beta-cyclodextrin nanoparticles can improve the stability of gamma-aminobutyric acid, further improve the effect of gamma-aminobutyric acid on sleep quality, and has practical application value in medical production.

The present invention provides a microcapsule and a preparation method thereof, which belongs to the field of microcapsules. The method comprises the following steps: Step 1 is to immerse the microcapsule wall in a bonding component solution, stir under heating conditions, and obtain a treated wall material; Step 2 is to add the wall material to the microcapsule core material solution, stir, filter, and dry to obtain a wall material loaded with a core material; Step 3 is to add the wall material loaded with a core material to a first plugging component, mix well, add a second plugging component thereto, stir under heating conditions, and then filter and dry to obtain the microcapsule. The microcapsule described in the present invention uses a treated eight-membered melon ring as the microcapsule wall, and fills the cavity of the microcapsule wall with a bonding component. The addition of the bonding component improves the bonding efficiency with the microcapsule core material, and finally uses a combined plugging agent mode to plug the microcapsule core material in the cavity, thereby improving the overall stability and sustained release rate of the microcapsule.

This invention provides a method for preparing olivine-type sodium iron phosphate, olivine-type sodium iron phosphate, and a sodium-ion battery, specifically relating to the field of sodium-ion secondary battery technology. The preparation method involves dissolving sodium propionate and sodium salt, adding olivine-type iron phosphate, and grinding to obtain a precursor slurry. The precursor slurry is then spray-dried and sintered at 200-400°C to obtain the olivine-type sodium iron phosphate. In this preparation method, sodium propionate not only serves as a sodium source, but propionate ions also promote the kinetics of the solid-phase reaction, resulting in purer olivine-type sodium iron phosphate and further improved capacity. Furthermore, to reduce the high ineffective carbon content caused by the difficulty in propionate decomposition at low temperatures, an appropriate metal oxide precursor is introduced to facilitate the effective decomposition of carbonaceous species during pyrolysis, providing a feasible path for the low-cost, large-scale preparation of high-performance NaFePO4 materials.

The present application relates to the field of probiotic microcapsules, in particular to a bifidobacterium longum double-layer microcapsule, a preparation method and application thereof. The present application is a bifidobacterium longum double-layer microcapsule prepared by extrusion and electrostatic deposition with pectin as a core layer and chitosan and its derivatives as an outer layer wall material. The method can achieve multi-layer encapsulation under mild conditions, and the preparation conditions are simple and mild, and easy to realize large-scale production. The obtained bifidobacterium longum double-layer microcapsule can not only effectively improve its tolerance stability, but also realize targeted delivery and release to colon cells, thereby realizing better probiotic function and providing a new idea for the development of probiotic functional products. At the same time, the bifidobacterium longum double-layer microcapsule of the present application applied in different types of fruit juice reduces the acidification of the fruit juice, reduces the influence of the matrix on the bifidobacterium longum, improves the activity of the bifidobacterium longum, significantly improves the transparency of the fruit juice, and does not affect the original sensory characteristics of the fruit juice.

The present invention discloses a method for preparing a protein-based gel system for efficiently loading soybean isoflavones, and belongs to the technical field of functional factor stabilization processing. The present invention first adopts a pH-driven method to prepare soybean isoflavone-loaded protein nanoparticles, and then induces the nanoparticle system to form a gel system with uniform texture by glucono-δ-lactone, thereby significantly improving the embedding rate and loading amount of soybean isoflavones, and realizing its controlled release under simulated digestive tract conditions. The present invention is simple to operate, green and environmentally friendly, realizes efficient embedding and delivery of soybean isoflavones, and can significantly improve the use value of soybean isoflavones in functional food processing.

The invention relates to lycopene water dispersible powder and a preparation method thereof, and belongs to the technical field of food additives. The method comprises the following steps: esterifying octadecyl alcohol and food-grade phosphoric acid, and reacting with edible gelatin to prepare modified edible gelatin; then lycopene dry powder is dispersed in ethyl acetate, a compound emulsifier, modified edible gelatin and 1, 3-propylene glycol are added, and preliminary embedding is achieved through high-speed shearing and ultrasonic nanocrystallization treatment; and step-by-step vacuum drying, secondary embedding with an excipient, freezing, crushing and screening are carried out, such that the water dispersible powder with a particle size of 0.1-0.2 mm is prepared. Through the hydrophobic binding and charge repulsion effects of the modified gelatin and the synergistic process of ultrasonic nanocrystallization and double embedding, the technical problems that traditional lycopene is poor in water dispersibility, prone to layering, high in solvent residue and insufficient in stability are solved. The prepared product is suitable for healthy food systems such as water-based food, beverage and the like, and has the advantages of convenience in storage and transportation and high bioavailability.

The invention discloses a slow-release carbon source based on wet garbage and a preparation method thereof, and relates to the technical field of sewage treatment. The preparation method of the slow-release carbon source comprises the following steps: removing impurities from wet garbage, adding deionized water, crushing, homogenizing, carrying out hydrolytic acidification to separate out a hydrolytic acidification liquid, carrying out flocculation and deslagging, separating out a liquid-phase component, and sequentially adding sodium citrate and citric acid to obtain a liquid-phase carbon source; the preparation method comprises the following steps: putting polyvinyl alcohol and sodium alginate into deionized water, dissolving, cooling, adding a liquid-phase carbon source, stirring, dropwise adding into a calcium chloride-saturated boric acid solution, and centrifugally cleaning to obtain embedded particles; polyvinyl alcohol and sodium alginate are placed in deionized water and cooled after being dissolved, water-based macromolecules and embedded particles are added, the mixture is poured into a copper cylinder mold after being stirred to be uniform, bidirectional freezing is conducted, natural melting is conducted after freezing, natural melting demolding is conducted after freezing again, and a slow-release carbon source is obtained; the slow-release carbon source has excellent slow-release effect and denitrification capability.

The invention belongs to the technical field of food preparation, and particularly relates to a compound solid coffee chewable tablet and a preparation method thereof. The compound solid coffee chewable tablet comprises the following raw materials in parts by weight: 20-30 parts of malt syrup, 10-20 parts of trehalose, 10-20 parts of micro powder coated with coffee powder, 1-5 parts of gelatin and 0.1-1 part of vitamin C, the micro powder coated with the coffee powder is obtained by taking a water phase containing the coffee powder as a core layer and taking an emulsion containing vegetable oil diglyceride and citric acid fatty glyceride as a shell layer through coaxial microfluidic extrusion. Coffee powder is coated through microfluidic extrusion, the bitter taste of the coffee powder is reduced while the effect of the coffee powder is not affected, and the obtained composite solid coffee chewable tablet is better in flavor and easier to accept by the public.

The present invention belongs to the technical field of pharmaceutical preparations, and discloses a lutein microcapsule and a preparation method and application thereof. The present invention mixes lutein with edible alcohol to obtain a core material solution; mixes esterified starch, polyvinyl pyrrolidone and water to obtain a wall material solution; adds the core material solution to the wall material solution to obtain a coarse suspension, and then homogenizes it under high pressure to obtain a nanosuspension; and spray-dries the nanosuspension to obtain a lutein microcapsule. The present invention uses esterified starch and polyvinyl pyrrolidone as wall materials, and there is a certain hydrophobic interaction between the esterified starch and polyvinyl pyrrolidone, so that the molecular chain entanglement degree is relatively high, so as to improve the embedding rate of lutein, and the embedding rate can be as high as more than 95%.