711 results about "Yolk" patented technology

The invention relates to an STON1 gene molecular marker primer related to chicken double-yolk egg traits and application of the STON1 gene molecular marker primer, and belongs to the technical field of biology. The STON1 gene molecular marker is a 7867409th basic group of a chicken reference genome GRCg7b version chromosome 3, the basic group is mutated into A or G, and the genotypes are A / A, A / G and G / G. The double-yolk egg ratio of the G / G genotype chicken is higher than that of the A / G and A / A genotype individuals, and the double-yolk egg ratio of the A / G genotype chicken is higher than that of the A / A genotype individuals. A forward and reverse primer pair is used for amplifying a fragment containing the molecular marker site, Sanger sequencing is carried out on an amplification product, the genotype of an individual is rapidly and accurately identified to serve as a genetic marker for chicken breeding, and the chicken with the higher proportion of double-yolk eggs is bred; the double-yolk egg traits can be efficiently and accurately detected, the breeding accuracy and breeding efficiency of the chicken double-yolk egg proportion are improved, and the method has important value for chicken breeding and production.

The invention discloses hydrolyzed egg yolk powder rich in growth factor-like polypeptide and a preparation method and application thereof, relates to the technical field of biology and the field of nutrition and health, and particularly relates to the hydrolyzed egg yolk powder rich in growth factor-like polypeptide and application of the hydrolyzed egg yolk powder as a medicament for promoting bone growth. The hydrolyzed egg yolk powder is extracted from egg yolk through a specific enzymolysis technology, and is rich in growth factor-like polypeptides with a remarkable osteogenesis promoting function. The hydrolyzed egg yolk powder and the growth factor-like polypeptide can be used as food additives or medicine components, can effectively promote bone growth, and have remarkable effects on treating or preventing bone health related diseases such as osteogenesis imperfecta, osteoporosis and arthrosis deformans.

The present invention relates to the technical field of new drug indications, and specifically discloses a non-filling breast augmentation external skin-rejuvenating oil preparation and its preparation method and application. The preparation method of the external skin-rejuvenating oil preparation is as follows: (1) preparing a skin-rejuvenating oil alcohol extract freeze-dried powder: taking astragalus, angelica, epimedium, ginkgo, green peel, frankincense, rhubarb, chicken gizzard, scutellaria, coptis, phellodendron and borneol in a certain weight ratio and adding them together into a container, and then adding an ethanol solution with a volume fraction of 40%-70% to the container, soaking, flash extraction, filtrate concentration, freeze drying to obtain; (2) preparing a skin-rejuvenating oil preparation: dissolving the skin-rejuvenating oil alcohol extract freeze-dried powder and egg yolk lecithin in edible vegetable oil to obtain an oil phase; then dripping the oil phase into the water phase obtained by dissolving Tween 60 and glycerol in ultrapure water, stirring and high-speed shearing, high-pressure homogenization, and obtaining. The external skin-rejuvenating oil preparation of the present invention has the effect of promoting breast fullness and uprightness in a short period of time.

The invention provides an egg yolk globulin powder processing traceability method and system, and the method comprises the steps: carrying out the multi-node monitoring of each processing traceability process through a block chain technology, and carrying out the chain packaging of a processing dependency relationship between adjacent processing traceability processes and a time certificate provided by an authority timestamp service; generating a chained association block between adjacent processing nodes in each processing traceability process; performing digital signature on the initial identification code of the egg yolk globulin powder raw material, the processing node information of each processing traceability process and the combined data of the preorder data block hash value, and generating a credible voucher of each processing traceability process; jointly constructing a traceability node of each processing traceability process based on the credible voucher of each processing traceability process, the processing node information and the chained association block; and generating a tamper-resistant full-process tracing chain of the egg yolk globulin powder based on each tracing node. Based on the scheme, cross-link credible association in egg yolk globulin powder processing traceability can be realized.

The invention relates to the technical field of nano drug loading, in particular to chlorin e6 composite liposome as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving egg yolk lecithin, cholesterol and chlorin e6 in an organic solvent, carrying out rotary evaporation in a constant-temperature water bath kettle to evaporate the solvent to dryness to form a lipoid film, adding a crocin aqueous solution, carrying out high-shear dispersion on the film, carrying out ultrasonication, and filtering with a 0.22 [mu] m filter membrane to obtain the chlorin e6 composite liposome. The chlorin e6 composite liposome prepared by the invention is high in encapsulation efficiency and good in stability, and has the effects of enhancing tumor cell uptake and killing tumor cells through photodynamic.

The invention discloses a pet food added with vitamins, containing fish-derived raw materials and having effects of beautifying hair and protecting skin and a preparation method thereof. The vitamin-added pet food containing fish-derived raw materials comprises the following raw materials in parts by weight: 8-16 parts of salmon, 1-5 parts of salmon fish oil, 50-60 parts of chicken, 10-15 parts of chicken liver, 10-15 parts of chicken heart, 2-5 parts of sweet potato powder, 1-5 parts of beer yeast powder, 2-5 parts of chicken oil, 1-2 parts of semen plantaginis powder, 1-2 parts of chicory root powder, 1-2 parts of cellulose and 0.5-2 parts of egg yolk lecithin. The nutrient solution is prepared from the following components in parts by weight: 0.2-0.8 part of polyglycerol fatty acid ester, 5-20 parts of water, 0.2-0.5 part of vitamin E and 0.05-0.1 part of agar. The pet food containing the fish-derived raw materials and added with the vitamins is comprehensive in nutrition, and can enhance the physique of pets, help the growth of pet hair and make the hair color of the pets bright and glossy.

The invention relates to the technical field of power transmission line maintenance, and particularly discloses bird droppings simulation liquid and a preparation method thereof, and the preparation method comprises the following steps: S1, separating yolk and egg white of egg liquid; s2, distilled water, part of the egg white, chitosan, edible oil and first sodium chloride are mixed, then separation and microjet homogenization are conducted in sequence, and chitosan treatment liquid is obtained; s3, mixing the chitosan treating fluid with polyhydric alcohols, second sodium chloride, the yolk obtained in the step S1 and the remaining egg white, and then performing high-pressure homogenization to obtain a polyhydric alcohol treating fluid; and S3, mixing the polyol treating fluid with distilled water and polyvinyl alcohol glue. According to the preparation method provided by the invention, the components and proportions thereof are matched, and a specific preparation process is adopted, so that the prepared bird droppings simulation liquid has similar components and characteristics to real bird droppings, the dynamic viscosity and conductivity of the bird droppings simulation liquid meet experimental requirements, and the bird droppings simulation liquid is stable in property and not easy to deteriorate.

The invention discloses an egg yolk lecithin separation and extraction device and a technology thereof, and relates to the technical field of separation and extraction, the egg yolk lecithin separation and extraction device comprises: a stirring barrel, the stirring barrel is arranged on the ground; the feeding hole is fixedly formed in the top of the stirring barrel; the solvent tank is fixedly mounted at the top of the stirring barrel, and a chloroform solution is arranged in the solvent tank; the separating funnel is fixedly mounted at the bottom of the stirring barrel, and the separating funnel is used for separating an egg phosphorus solvent from a water phase; the motor is fixedly mounted at the top of the stirring barrel; the stirring rod is fixedly mounted at the output end of the motor, and a reciprocating spiral groove is formed in the surface of the stirring rod; the stirring plate is fixedly mounted at the bottom of the stirring rod; the elastic telescopic rod enables egg yolk and chloroform on the sliding plate to be mixed more sufficiently through up-down movement of the sliding plate.

The invention belongs to the technical field of fermentation engineering, and particularly relates to turmeric meal fermented feed as well as a preparation method and application thereof. Iron, magnesium and zinc elements are added into fermentation base materials such as turmeric meal and soybean meal, and the mixture is fermented through a bacterium-enzyme synergistic fermentation inoculant to generate the turmeric meal fermented feed, wherein the fermentation inoculant comprises bacillus subtilis, lactobacillus plantarum and saccharomycetes. The prepared turmeric meal fermented feed can be applied to feed feeding of laying hens or broilers. Results of the embodiment of the invention show that the turmeric meal fermented feed prepared by the invention not only can effectively inhibit harmful bacteria in vitro, but also can remarkably improve the chicken production performance, the eggshell quality and the yolk color, and effectively improve the chicken quality of yellow feather broilers.

The invention belongs to the technical field of medical nano-materials, and particularly relates to a Fe / Mn-SNC double-monatomic nano-material with multienzyme activity and a preparation method and application of the Fe / Mn-SNC double-monatomic nano-material. The designed and developed Fe / Mn-SNC double monatomic adopts a local fine regulation strategy, the surface and space structure of a host are finely regulated to bear the relationship between metal double active sites, the double monatomic nano-enzyme with the Yolk-Shell structure morphology is synthesized through a one-step pyrolysis method and a ligand etching pyrolysis strategy, the structural property is stable, the rich active sites are achieved, and the nano-enzyme can be used for preparing the metal double monatomic nano-enzyme with the Yolk-Shell structure. The enzyme-like activity can be achieved to the maximum extent. The nano material has multi-enzyme activity, can initiate cascade reaction of the nano material, so that rich ROS (reactive oxygen species) is generated, an antibacterial effect is achieved, and the nano material does not have drug resistance and is high in universality, so that the nano material has important scientific significance and huge commercial value.

The invention discloses a construction method and application of an ultra-sensitive self-enhanced electrochemical luminescence biosensor, and belongs to the technical fields of biochemical analysis, nano materials and life science. According to the preparation method disclosed by the invention, Cu < 2 + > is introduced into luminous ZrEu-MOF, and a co-reactant K2S2O8 is catalyzed by the Cu < 2 + > to generate more active free radicals, so that ZrEuCu-MOF with a self-enhancement function is prepared; resorcinol-formaldehyde resin with an egg yolk structure is further synthesized as a quenching probe, and effective quenching of a light-emitting signal is realized based on electrochemical luminescence (ECL) resonance energy transfer between the resorcinol-formaldehyde resin and ZrEuCu-MOF, so that the detection sensitivity is improved. The constructed ECL biosensor realizes efficient and sensitive detection of neuron-specific enolase, and has the advantages of low detection limit, wide detection range, good stability and industrial application prospect.

The invention discloses an egg yolk protein osteogenic peptide and a preparation method thereof, and belongs to the field of biological medicine and the technical field of functional food or egg product processing. According to the method, the skimmed yolk powder is subjected to enzymolysis to prepare the osteogenic bioactive peptide, enrichment and separation are carried out through macroporous resin, the preparation and enrichment process is suitable for large-scale production, and laboratory achievements can be promoted to be converted into industrial production; two osteogenic active peptides are separated and identified, DFDLPT has the activity of promoting osteoblast proliferation, and FDIDPG has the functional activity of promoting osteoblast differentiation and mineralization.

The invention relates to the field of microorganisms, and particularly discloses a highly pathogenic gosling plague virus and a preparation method of an egg yolk antibody of the highly pathogenic gosling plague virus. The invention relates to a gosling plague virus, which is preserved in the China General Microbiological Culture Collection Center (CGMCC), is named as the gosling plague virus RD2311B-E21, is preserved on April 22, 2024, and has the preservation number of CGMCC NO.45964. The gosling plague virus is named as the gosling plague virus RD2311B-E21. The preparation method of the egg yolk antibody comprises the following steps: proliferating and inactivating gosling plague virus RD2311B-E21 to prepare an immunogen; respectively injecting the immunogen into the laying hens for four times to obtain four-immunized eggs; the preparation method comprises the following steps: soaking a tetra-immunized egg in a bromogeramine solution, performing spray fumigation with glutaraldehyde, then separating yolk, treating the yolk with disodium hydrogen phosphate to obtain a turbid solution, and performing acidification extraction, degreasing with octanoic acid, degerming filtration, virus removal by ultrafiltration, ultrafiltration concentration and subpackaging to obtain a finished product. The compound has the advantages of high purity, high titer and good treatment, prevention and control effects.

The invention relates to an egg yolk shell structure ion-doped sodium ferric sulfate positive electrode material, a preparation method and an application thereof, and the material is an egg yolk shell sphere structure carbon composite sodium ferric sulfate positive electrode material formed by doping cations A and B at Na or Na / Fe ion sites of sodium ferric sulfate and enabling anions to occupy part of S-O tetrahedral positions to change the arrangement mode of Fe-O octahedrons of the sodium ferric sulfate, the shell and the inner core of the egg yolk shell sphere are uniform in material, a gap exists between the shell and the inner core, and carbon is uniformly distributed and coated inside and outside the material. The invention also discloses a preparation method and application of the egg yolk shell structure ion-doped sodium ferric sulfate positive electrode material. The material is large in specific surface area, the reversible charge-discharge capacity of an assembled battery is high, and the cycle performance and the high-rate performance are good. The method is low in raw material cost, simple, short in production period and suitable for large-scale continuous production.

The invention relates to the technical field of pet foods, in particular to a pet food for improving the palatability of the pet food and a preparation method of the pet food. The invention provides a pet food, which comprises the following raw materials: enzymolysis yolk liquid, enzymolysis yolk powder and goat milk powder, and the raw materials are applied to the pet food, so that feeding stimulation, taste increase and palatability increase can be formed when pets (such as pet dogs) eat the pet food, and further, strong olfactory stimulation is matched with the taste to increase feeding; stable food calling is guaranteed; and the palatability is improved.

The invention discloses a tiger skin soft boiled egg production process and a deoiling and cooling conveyor line, and relates to the technical field of food processing, the process comprises the following steps: S1, cleaning and disinfection: cleaning and disinfecting the surfaces of poultry eggs, and then washing the poultry eggs; s2, temperature returning placement: returning the temperature of the poultry eggs to 15-25 DEG C; s3, performing low-temperature water boiling: putting the poultry eggs into water with the temperature of 70-80 DEG C, and performing soaking and heating; s4, cooling and shelling: fishing out the poultry eggs, putting the poultry eggs into water for cooling, and then carrying out shelling treatment; s5, frying the tiger skin: putting the poultry eggs into hot oil, and frying the tiger skin at the temperature of 150-160 DEG C for about 3-4 minutes; s6, soaking in cold water: putting the fished-out tiger skin soft boiled eggs into ice water to be soaked for 3-5 minutes, and then fishing out the soaked tiger skin soft boiled eggs; s7, marinating: putting the tiger skin soft boiled eggs into marinade for marinating; and S8, packaging: fishing out the tiger skin soft boiled eggs, and carrying out vacuum packaging. The method has the effect of improving the soft yolk stability and the product quality of the tiger skin soft yolk eggs.

The invention provides a targeted egg yolk cholesterol removal device and method, the device comprises a heating device, an infrared sensor, a liquid taking rod and other key components, and the temperature, layering position detection and supernate collection in the liquid treatment process can be accurately controlled. The whole process flow comprises the following steps: firstly, diluting the egg yolk with a NaCl solution, treating with phospholipase and performing enzyme deactivation treatment; then, determining a layering position by using an infrared sensor, and collecting supernate to a lower stirring tank. And then adjusting the pH value, and adding beta-cyclodextrin for further reaction. And finally, transferring the precipitate to a lower stirring tank through a high-pressure air pump, mixing the precipitate with the supernate, and performing centrifugal treatment to obtain the yolk with the cholesterol content greatly reduced. The phospholipase and cyclodextrin adopted in the invention are natural substances, have no toxic or side effect, and are safe and reliable. In the process of removing cholesterol, harmful substances are not generated, and the method is environment-friendly; the provided equipment is high in function integration degree, the number, cost and energy consumption of the equipment are reduced, and material loss is reduced.

The invention relates to a preparation method and application of yolk polypeptide with ACE inhibitory activity, and the method comprises the following steps: Q1, adding degreased yolk powder into a proper amount of water, dissolving, and adjusting the pH value to 6-8; and Q2, adding alkaline protease or flavourzyme to carry out enzymolysis for 1.5-2.5 hours under the conditions that the temperature is 50-60 DEG C and the pH value is 7-8, and then carrying out enzyme deactivation to obtain the egg yolk hydrolysate. The ACE inhibitor with high activity is prepared by adopting step-by-step enzyme hydrolysis, five ACE inhibitory peptides (KFIPL, KFLPGY, KFLPTF, APTFGKL and KLPDMILY) with high activity are screened and identified by utilizing a bioinformatics method, and in order to solve the problem that the polypeptide is unstable after being sterilized in the functional beverage, CMC and GG are used as stabilizers, so that the utilization problem of the enzymolysis polypeptide in the functional beverage is solved.

The invention relates to the field of food curing, and particularly discloses flowing-core and soft-yolk quail eggs and a curing method thereof. The invention relates to a free-core soft-yolk quail egg curing method, which is applied to industrial production, and comprises the following steps: putting quail eggs into water or steam at 89-99 DEG C, and heating for the first time; putting the quail eggs in water at 0-25 DEG C for primary cooling; the quail eggs are placed in water or steam at 89-99 DEG C to be heated for the second time; placing the quail eggs in water at 0-25 DEG C for secondary cooling; the quail eggs are placed in water or steam at 89-99 DEG C to be heated for the third time; putting the quail eggs in water at 0-25 DEG C for third cooling; the flowing core ratio of the obtained soft yolk quail eggs is 30%-70%. According to the flowing-core soft-yolk quail eggs and the curing method thereof, through three times of heating and three times of cooling, complete curing of soft-yolk egg white is guaranteed, the subsequent shelling rate is ensured, meanwhile, the soft-yolk proportion of the yolk reaches 85% or above, the proportion of flowing cores in the soft-yolk reaches 30%-70%, and industrial batch production is achieved.

The utility model provides an egg-yolk puff uniform baking device which comprises a baking device body, the baking device body comprises a box body, a motor box is fixedly installed on the top of the box body, a power mechanism is fixedly installed on the side of the motor box, a cavity is formed in the box body, a box door is movably installed on the side of the cavity, and the power mechanism is fixedly installed on the side of the box door. And a lower heating mechanism and an upper heating mechanism are fixedly mounted in the cavity. When the uniform baking device for the egg-yolk puff is used, after the supporting rod drives the fixing rod to descend, one end of the supporting column makes contact with the lower heating mechanism, the lower heating mechanism provides a supporting point for the supporting column, the supporting column pushes the ring base to move upwards to be separated from the open hole, and after separation, the ring base and the egg-yolk puff are taken out together. The damage caused by pinching the egg-yolk puff by hands is avoided.

The invention provides egg cordyceps sinensis and a cultivation method thereof. The cultivation method comprises the following steps: S1, selecting fresh eggs; s2, forming small holes in the eggshell, stirring yolk through the small holes, and pumping out a certain amount of egg liquid; s3, injecting a sugar aqueous solution into the eggs from which the egg liquid is extracted, and then shaking the eggs to mix the egg liquid with the sterilized sugar aqueous solution; s4, inoculating cordyceps sinensis liquid strains into the mixed eggs, uniformly shaking, and sealing the small holes; s5, the eggs inoculated with the cordyceps sinensis liquid strains are placed in an environment with the temperature being 22-25 DEG C and the humidity being 40-60% to be cultured for 10-30 days; and S6, removing part of eggshells from the cultured eggs, putting the eggs into a disinfected transparent container, fixing, sealing a cover, putting in an environment with the temperature of 20-25 DEG C and the humidity of 65-85%, and culturing under illumination until the eggs grow out and are mature to obtain the egg cordyceps sinensis. The method has the advantages of wide and cheap raw material sources, simplicity in operation, low requirements on a culture environment, short production period and the like, and has good economic benefits.

The invention discloses phospholipid-rich egg yolk polypeptide powder as well as a preparation method and application thereof, and belongs to the technical field of food processing and medical health care. The preparation method of the phospholipid-rich egg yolk polypeptide powder specifically comprises the following steps: beating a fresh egg to separate egg yolk, adding water to dilute, adjusting the pH value to 5.0-6.0, centrifuging, and taking a precipitated phase; adding water to dilute the precipitate, adjusting the pH value to 7.0-9.0, and centrifuging to obtain a slurry phase supernatant; adding neutral protease into the pulp phase supernatant, and carrying out an enzymolysis reaction; after the reaction, concentrating, drying, freezing and crushing; placing the crushed material in a supercritical carbon dioxide extraction device for deoiling, and after deoiling, mechanically crushing and screening to obtain phospholipid-rich egg yolk polypeptide powder; the phospholipid-rich egg yolk polypeptide powder has relatively high dispersibility and stability, also has relatively high activity, has a very good promotion effect in improvement of a cognitive function, shows huge application potential in the technical fields of functional foods, health care products and medicines, and has extremely wide market prospects.

The invention discloses a bionic sebum composition, a skin care product containing the bionic sebum composition and application of the bionic sebum composition. The bionic fetal sebum composition is prepared from the following components in parts by mass: 0.01 to 10 parts of macadamia nut oil, 0.01 to 10 parts of egg yolk oil and 0.01 to 10 parts of HPID. The skin care product containing the bionic fetal sebum composition can have excellent moisturizing performance and skin barrier stability at the same time.

The invention discloses an egg yolk polypeptide capable of improving learning cognitive ability and a preparation method and application thereof, and the egg yolk polypeptide capable of improving learning cognitive ability is obtained by combining ultrasonic alkali treatment with alkaline protease enzymolysis and desalting by using an integrated membrane separation technology. According to the preparation method, the compact structure of the yolk can be destroyed through the ultrasonic alkali treatment and the enzymolysis process, the enzymolysis efficiency of the yolk can be improved, a large number of bioactive peptides are released, the bioactive peptide yield of a final product is stabilized to be 60% or above, the molecular weight of the bioactive peptides is intensively distributed to be 180-2000 Da, and the nutrition utilization rate is improved. The egg yolk polypeptide prepared by the method can significantly increase the value-added rate of nerve cells and improve the spatial memory ability and cognitive flexibility of mice, ultrasonic alkali treatment is combined with biological enzymolysis, no organic solvent or strong acid and strong alkali is added, and the production process of natural protein hydrolysate is natural and safe and meets the food-grade safety production standard.

The present invention discloses a pet food containing fish-derived raw materials with added vitamins and having the efficacy of beautifying hair and skin care, and a preparation method thereof. The pet food containing fish-derived raw materials with added vitamins of the present invention comprises the following raw materials in parts by weight: 8-16 parts of salmon, 1-5 parts of salmon fish oil, 50-60 parts of chicken, 10-15 parts of chicken liver, 10-15 parts of chicken heart, 2-5 parts of sweet potato powder, 1-5 parts of brewer's yeast powder, 2-5 parts of chicken oil, 1-2 parts of psyllium powder, 1-2 parts of chicory root powder, 1-2 parts of cellulose, 0.5-2 parts of egg yolk lecithin, 0.2-0.8 parts of polyglycerol fatty acid ester, 5-20 parts of water, 0.2-0.5 parts of vitamin E, and 0.05-0.1 parts of agar. The pet food containing fish-derived raw materials with added vitamins of the present invention is nutritionally comprehensive, can enhance the physique of pets, help the growth of pet hair, and make the pet hair color bright and shiny.

The invention relates to the technical field of crossing of material chemistry and water electrolysis oxygen evolution, in particular to a method for preparing a yolk shell structure high-entropy phosphide FeCoNiCrMn-P catalyst through a low-temperature phosphating method. The method comprises the following steps: dissolving a plurality of nitrates in isopropanol and a glycerin solvent to react to obtain high-entropy glycerate; carrying out hydrothermal reaction on the reacted high-entropy glycerate to generate a high-entropy hydroxide; the high-entropy hydroxide and a phosphorus source are subjected to a low-temperature phosphating reaction to generate the high-entropy phosphide catalyst. According to the invention, the reactant FeCoNiCrMn-P with a graded egg yolk shell structure not only exposes more active sites and provides abundant mass transfer channels, but also provides a uniform environment for heterogeneous catalysis, so that OER is promoted. In addition, the shell layer can also play a role of a protective layer, prevents the active components from deforming and dissolving in the catalytic process, and enhances the stability of the active components. When the current density is 10 mA cm <-2 >, the FeCoNiCrMn-P2 has the best OER performance, and the overpotential of the FeCoNiCrMn-P2 is 329 mV, so that the FeCoNiCrMn-P2 has high practical application value.

The invention discloses a silicon-carbon negative electrode material with a yolk-eggshell structure and a preparation method of the silicon-carbon negative electrode material, and belongs to the technical field of new energy materials and energy electrochemistry. The preparation method comprises the following steps: by taking photovoltaic silicon waste as a silicon source, heating in an air atmosphere to generate a silicon oxide layer on the surface of a silicon particle, then coating a layer of carbon shell outside, and finally removing a silicon oxide middle layer by hydrofluoric acid to obtain the silicon-carbon negative electrode material Si (at) Void (at) C. The obtained material is of a yolk-eggshell structure, micron-sized silicon particles are adopted as an inner core, and the silicon-carbon negative electrode material Si (at) Void (at) C is obtained. The shell is amorphous carbon, and a reasonably designed void space is formed between the particles and the shell, so that a buffer space can be provided for expansion of the silicon particles, and the cycle performance of the silicon-carbon negative electrode material is improved; the whole preparation process is simple, the price of the photovoltaic silicon waste is low, large-scale production is facilitated, high-value conversion and utilization of waste resources are achieved while the cost is reduced, and obvious economic value and social value are achieved.

This application discloses a feline allergen Fel d1 egg yolk antibody and its preparation method and application, comprising: obtaining PCR amplification products through PCR amplification; constructing a recombinant plasmid by ligating the PCR amplification products with pET-28a(+); transforming the recombinant plasmid into Rosetta competent cells to obtain transformants; obtaining recombinant antigens by extracting proteins from the transformants; obtaining a subunit vaccine by mixing and emulsifying the recombinant antigens with white oil adjuvant; administering the subunit vaccine to laying hens to obtain immunized egg yolk liquid; adding Tris-HCl buffer and polyethylene glycol to the egg yolk liquid and centrifuging to collect the protein aqueous phase; filtering the protein aqueous phase to obtain a filtrate, adding polyethylene glycol, mixing, centrifuging to collect the precipitate; mixing the precipitate with PBS buffer, adding ammonium sulfate, and centrifuging to obtain the egg yolk antibody. This invention solves the problem that the safety and economy of existing feline allergy treatment methods cannot be simultaneously achieved.

The invention discloses a yolk-derived hypoglycemic peptide as well as a preparation method and application thereof, and belongs to the technical field of polypeptides. The amino acid sequence of the yolk source blood sugar lowering peptide is YVIQEDR. The novel peptide YVIQEDR capable of reducing blood sugar is identified and obtained from the degreased egg yolk powder hydrolysate by utilizing a molecular docking technology, and compared with the degreased egg yolk powder hydrolysate, the peptide YVIQEDR is proved to have higher blood sugar reducing activity. Besides, the YVIQEDR also has the advantages of no toxicity, high safety, strong activity and the like, can be used as an ideal effective factor for reducing blood sugar, can be widely applied to the fields of food, health care products, medicines and the like, and has a huge application value.

The invention discloses composite yolk immunoglobulin antibody toothpaste and a preparation method thereof, and the toothpaste comprises the following components in percentage by mass: 0.01-1.0% of yolk immunoglobulin; 10-70% of a humectant; 0.01%-0.5% of an acid-base buffer agent; 0.01%-0.5% of a taste improver; 0.1%-3% of a thickening agent; 5-50% of a friction agent; 0.1-5% of a foaming agent; 0.01%-0.5% of an appearance improver; 0.1 to 2.0 percent of essence; and the balance of water. Wherein the egg yolk immune globulin is a composite specific egg yolk antibody for resisting porphyromonas gingivalis, fusobacterium nucleatum and prevotella intermedia. Starting from three key pathogenic bacteria causing periodontal diseases, the egg yolk composite antibody resisting porphyromonas gingivalis and having specificity of fusobacterium nucleatum and prevotella intermedius is added into a toothpaste formula, and the effects of inhibiting bacteria, preventing and relieving oral inflammation, repairing gingiva and the like are achieved in a tooth brushing mode.