53 results about "EGG SHELL MEMBRANE" patented technology

The invention provides a preparation method of a zinc oxide/titanium dioxide composite material with a network structure. The method is characterized by comprising following steps: preparing a biological template; preparing a zinc-alcohol solution; preparing a butyl titanate-alcohol solution; taking out an egg-shell membrane dipped with normal saline, and dipping into the zinc-alcohol solution and the butyl titanate-alcohol solution separately for 4-12 h; putting the air dried egg-shell membrane into a muffle furnace for sintering at a sintering temperature of 550 DEG C to 700 DEG C with a temperature rising rate of 2 DEG C/min to 5 DEG C/min and a temperature maintaining time of 2-4 h; and cooling to room temperature to obtain the zinc oxide/titanium dioxide composite material with the network structure. According to the zinc oxide/titanium dioxide composite material with the network structure prepared by the simple biological template method, ZnO and TiO2 particles in the product has coupling and synergistic effects, thus enhancing and improving a gas-sensitive performance, a luminescence performance, photocatalysis, and other performances. In addition, interactions between the ZnO and the TiO2 can generate new physical phenomena and new functions can be utilized. The method has advantages of the easily available template, simple preparation technology and processes, low cost, strong repeatability, capability of synthesis in large scale, and the like.

The present invention belongs to the field of biological material preparing technology. Egg shell membrane is first dissolved completely in water solution of beta-thiopropionic acid and organic acid as cosolvent through heating to 80-95 deg.c and stirring; after centrifugal separatino and elimination of precipitate, the separated liquid is cast directly onto glass plate or steel plate and dried to form film; and the film is washed with methanol, neutralized with buffering phosphate solution, washed with deionized water, dried and peeled to obtain planar egg shell film. Without residual toxic solvent and crosslinking agent used, the egg shell film can be used widely.

The invention discloses a kit for extracting DNA in the egg shell membrane of Yangtze alligator and a use method thereof, and the kit comprises the following reagents: a reagent A, a reagent B, a reagent C, a reagent D, a reagent E and a reagent F. The template DNA which is extracted by the kit has good purity, and the kit can be used for gene amplification sequencing and typing. In the amplification of the 12S rRNA gene, the mitochondrial D-loop region and the Cyt b gene, all the extracted shell membrane DNA templates can be successfully amplified to obtain the fragment products with expected identical sizes, high concentration and high specificity. Microsatellite DNA marker specificity primers are utilized to obtain typing data through the PCR amplification to be used for the identification in disputed paternity of Yangtze alligator. In addition, the method also can be applied to the extraction of other ovipara such as the turtles, the birds and the like. The obtained template DNA can be widely applied to the studies of the ovipara on the fields such as population genetic analysis, molecular evolution, evolution of relationship among individuals and the like.

The invention discloses an article for nursing hair. The article for nursing the hair comprises an egg membrane protein active ingredient. As the amino acid component contained in the egg membrane protein is similar to the component contained in human healthy hair, the article for nursing hair, containing the egg shell membrane protein, can make up the amino acid nutrient lost from the hair, thus improving the beneficial effect of the hair regulation.

The invention discloses a production method and application of egg-shell membrane collagen peptides. The method comprises the following steps of: (1) taking an egg membrane out of an egg shell, and smashing to over 40 meshes; (2) adding egg membrane powder obtained in the step (1)into a papain solution with the concentration of 800-1,000 U/L, and stirring at the temperature of 35-50 DEG C for 2-3 hours to obtain a mixed material, wherein the solid-liquid ratio is 1:(2-5); (3) adding an NaOH solution into the mixed material obtained in the step (2) till the mass concentration of NaOH is 2-4.5 percent, stirring at the temperature of 45-85 DEG C for 3-4 hours, standing, and taking a supernatant; and (4) adjusting the pH value of the supernatant obtained in the step (3) to 7-11 with dilute hydrochloric acid to obtain an egg-membrane collagen peptide liquid, desalting, concentrating and drying to obtain egg-shell membrane collagen peptides. The production method has simple operation steps and simple conditions, egg-shell membrane collagen peptides can be produced on a large scale, energy consumption is low, environmental pollution is avoided simultaneously, and two or more polypeptide surfactants can be produced simultaneously; and by changing operation conditions, the performance of the polypeptide surfactant can be adjusted and controlled.

A fiber treatment agent contains components (a) and (b). A fiber treated with the fiber treatment agent and a fiber fabric including the fiber are also provided. The component (a) an insoluble egg-shell membrane fine powder with a mean particle size of 0.1 to 10 μm while the component (b) is a synthetic resin emulsion or a synthetic resin solution.

The invention discloses a method of preparing a polyethylene glycol and protein fiber combined artificial cardiac valve and belongs to the field of biomedical materials. The method comprises: covering egg shell membrane protein fiber with photo-crosslinked polyethylene glycol hydrogel to obtain a composite material, and preparing the composite lamellar artificial cardiac valve through crosslinking by further using a molecular crosslinking agent (such as glutaraldehyde). The polyethylene glycol hydrogel is prepared by means of photo-crosslinking, ensuring the integrity of artificial valve materials, protecting the covered protein fiber from the in-vivo enzymatic decomposition and preventing calcification of the artificial valve. The artificial cardiac valve material prepared by the method simulates the lamellar structure of human aortic valves and has mechanical properties similar to those of the human aortic valves, with good biocompatibility guaranteed, and the need of a replacement receptor for high valve durability, good tissue compatibility and dispensing with a lifetime of anticoagulation can be met.

The invention relates to skin soothing and regenerating protein film cream and a preparation method of the skin soothing regenerating protein film cream, relating to the technical field of cosmetics. The skin soothing regenerating protein film cream is prepared from the following components: water, neopentyl glycol diheptanoate, butanediol, glycerol, an oat extract, fucogel-1, glycosphingolipids, wheat fine powder lipid, a plankton extract, a mirabilis jalapa extract, a hydrolyzed egg shell membrane and the like. The skin soothing regenerating protein film cream can permeate to the stratum corneum of skin and form a reticular protective film in the skin, so that the problems of ultraviolet ray invasion and skin dryness and ageing can be solved, meanwhile, the synthesis of collagens from fibroblasts is promoted, therefore, the formation of skin wrinkles is reduced, the skin aging is resisted, the skin elasticity is improved, the skin is enabled to be tender, fine and smooth, as well as full and plump, and is full of beautiful youth gloss, the outside contamination resistance of the skin is enhanced, the self-protection ability of the skin is enhanced, the cell ageing is prevented, and thus the skin ageing is delayed, the youthful vigor of the skin is recovered, the skin is tender and full, and the beautiful skin with the real lasting health is realized from inside to outside.

The invention discloses a novel efficient composite absorption material prepared by loading modified wheatgrass straw negative ions on an egg shell membrane, and belongs to the field of water treatment. The invention also discloses a method for removing phosphate radical in water by utilizing the egg shell membrane loaded with the modified wheatgrass straw negative ions, namely, the composite absorption material can be used for absorbing and removing phosphate radical ions in water under a neutral condition. The novel efficient composite absorption material can be used for effectively absorbing the phosphate radical ions in the water, and solves the pollution problem of the phosphate radical fundamentally. The novel efficient composite absorption material has the characteristics of large specific surface area, high absorption efficiency, availability of raw materials, low material cost, high recovery rate and the like, is simple to operate, and is low in cost, and materials can be obtained easily, so that the novel efficient composite absorption material capable of removing the phosphate radical ions in the water, provided by the invention, has favorable economic and environment benefits.

The invention belongs to the technical field of medical biomimetic materials, and particularly relates to a biomimetic mineralized membrane prepared based on layered eggshell membrane and protein induction, a preparation method and application. The preparation method comprises the following steps of: S1, material preparation, including three parts of preparing an eggshell membrane, preparing enzymatic hydrolysate and preparing protein mineralized liquid, wherein the enzymatic hydrolysate is prepared by dissolving protease and a reducing agent in deionized water and adjusting the pH to 6-9, andthe protein mineralized liquid is prepared by dissolving water-soluble protein in mineralized liquid; and S2, preparation of the biomimetic mineralized membrane, namely soaking the inner eggshell membrane and/or the outer eggshell membrane in the enzymatic hydrolysate to obtain a modified eggshell membrane; and placing the modified eggshell membrane in the protein mineralized liquid for treatmentto obtain the biomimetic mineralized membrane prepared based on layered eggshell membrane and protein induction. The biomimetic mineralized membrane can be used as a bone tissue repair material, andthe preparation process has the characteristics of high mineralization efficiency, short preparation cycle time and good mineralization effect.

A method for processing unseparated egg shells includes placing unseparated egg shells in a separation tank containing fluid, applying cavitation to the unseparated egg shells in the fluid to thereby separate the egg shell membranes from the egg shells, and recovering the egg shell membranes. An apparatus for processing unseparated egg shells includes a separation tank for holding a fluid, a recirculating loop operatively connected to the separation tank, and at least one submersible mixer in the recirculating loop to recirculate the fluid and egg shell membranes and egg shells within the fluid. The apparatus further includes a membrane collection conveyor for conveying egg shell membranes from the separation tank and a shell conveyor positioned beneath the separation tank for conveying egg shells away from the separation tank.

The invention discloses a growth factor-loaded micro-nano composite membrane. The micro-nano composite membrane is composed of a growth factor-loaded egg shell membrane, a protein membrane, a hydrophilic micro-nano fiber layer and a hydrophobic micro-nano fiber layer; the micro-nano composite membrane takes the egg shell membrane as a direct carrier of a growth factor, and meanwhile protein servesas a coating layer to be deposited on the surface of the growth factor-loaded egg shell membrane to form the protein membrane through salting out, and then the hydrophilic micro-nano fiber membrane and the hydrophobic micro-nano fiber membrane wrap the surface of the protein membrane in sequence through an electrostatic spinning technology; the protein membrane is obtained through salting-out sedimentation by adopting poultry egg white. The micro-nano composite membrane is reasonable in structural design, so that the loaded growth factor has the slow-release property, and the materials forming the membrane layers have the effect of keeping the growth factor activity.

Providing an agent for activating a sirtuin gene and an application thereof. The agent for activating a sirtuin gene is characterized to contain an egg shell membrane ingredient, for example an egg shell membrane-containing powder or soluble egg shell membrane ingredient.

The invention provides pure natural lotion and a preparation method thereof. The pure natural lotion comprises the following raw materials in parts by weight: 4-8 parts of dendrobii officmalis caulis, 10-15 parts of rhizoma polygonati odorati, 4-8 parts of propolis, 4-6 parts of molasses, 2-4 parts of radix angelicae dahuricae, 3-6 parts of radix angelicae pubescentis, 5-10 parts of radix ginseng leachate, 10-20 parts of goat milk, 3-6 parts of medulla spinalis caprinus, 2-4 parts of pearl powder and 3-6 parts of egg shell membrane powder. The pure natural lotion provided by the invention is made of a plurality of raw materials, can realize multiple effects of beautifying, skin care and bacterial inhibition simultaneously, enhances elasticity of the skin, activates cells, delays appearing of wrinkles, can be applied to the whole body, and is suitable for long-term use, simple in preparation method and convenient to popularize and use.

A wound care product in the form of a gel is provided, and contains protein from egg shell membrane. The gel is made by first hydrating the egg shell membrane powder and then adding carbomer to partially neutralize the egg shell membrane. The neutralization is completed with the addition of triethanolamine, so as to form a homogeneous gel with a smooth consistency. An antimicrobial compound and a tissue growth accelerator are added to the gel. The gel, infused with egg shell membrane, is applied directly to the wound tissue to form a barrier trapping the active ingredients adjacent the wound site and inhibiting penetration of outside bacteria into the wound site.

The invention discloses a method for preparing a porous calcium-based material from eggshells and application of the porous calcium-based material in thermochemical energy storage, and belongs to the technical field of thermochemical energy storage. The preparation method comprises the following steps: preparing calcium nitrate by taking egg shells as a calcium source, preparing a calcium nitrate-coated egg shell membrane material by taking an egg shell membrane as a template and citric acid as a gelling agent and adopting a sol-gel method, then cleaning and filtering the obtained material, and calcining at high temperature of 650 DEG C for 2 hours to remove the egg shell membrane template to obtain the porous calcium-based material. The magnesium-doped calcium-based material prepared in the invention has good cycle stability and shows good energy storage performance in calcium carbonate/calcium oxide/carbon dioxide cycle, and the preparation method has the advantages of low cost and simple preparation process, and is suitable for industrial scale-up production in the future.