1092 results about "Sodium hyaluronate" patented technology

The invention discloses an absorbable suture line for surgical suture and a preparation method thereof, and relates to the technical field of medical materials. The absorbable suture line for surgical suture is prepared from the following raw materials in parts by weight: 50 to 65 parts of polylactic acid, 15 to 20 parts of polyglycolic acid, 3 to 5 parts of sodium carboxymethyl cellulose, 3 to 8 parts of a toughening agent, 3 to 6 parts of an antibacterial agent, 0.3 to 0.8 part of a lubricating agent, 1 to 2 parts of sodium hyaluronate and 5 to 10 parts of polyvinyl alcohol. The toughening agent is obtained by reacting hydroxyethyl acrylate with ethylenediamine to generate a four-arm compound and then reacting with 6-caprolactone and DL-lactide. The absorbable suture line for surgical suture prepared by the invention has excellent tensile property and antibacterial property, and can meet the application requirements of clinical medical treatment.

The invention relates to a composition of polyester particles and sodium hyaluronate, which is prepared by the following steps: preparing PCL (Polycaprolactone) microspheres with the particle size of 20-50 microns by an emulsion method; hA is selected, and a PBS buffer solution is used for preparing an HA solution; repeatedly freezing and thawing in a refrigerator at-80 DEG C for 3 times to form micro-crosslinked HA gel; and mixing the microspheres and the micro-crosslinked HA gel according to a mass ratio of 25: 75. The invention provides a technology of taking the physically micro-crosslinked HA as a suspension carrier, so that the polyester particles or microspheres can be stably suspended in an HA solution system without a chemical crosslinking agent, and an injection product has better biocompatibility and safety. HA which does not contain a chemical cross-linking agent and polyester particles / microspheres are mixed to serve as a medical beauty filling system, and the problem of stable suspension of the polyester particles / microspheres in the HA is solved by performing physical micro-crosslinking on the HA.

The invention relates to the technical field of whitening essence, and discloses whitening essence suitable for sensitive skin and a preparation method thereof.The whitening essence suitable for sensitive skin is prepared from, by mass, 2%-3% of prinsepia utilis royle oil, 1%-2% of portulaca oleracea extract, 1.5% of camellia yunnanensis flower extract, 0.5% of panax notoginseng root extract, 3% or less of nicotinamide, 1% or less of 1, 2-propylene glycol and the balance deionized water. 1%-1.5% of 1, 2-hexanediol, 0.1%-0.3% of sodium hyaluronate and 60%-70% of deionized water. According to the whitening essence suitable for the sensitive skin and the preparation method of the whitening essence, through the synergistic combination of prinsepia utilis royle oil (barrier repair), purslane (anti-inflammatory), camellia japonica (tyrosinase inhibition) and pseudo-ginseng (microcirculation improvement), melanogenesis is inhibited through multiple channels, the sensitive skin is relieved synchronously, nicotinamide (3%) is compounded with the prinsepia utilis royle oil, and the skin whitening effect is achieved. The synergism of whitening and barrier repair is enhanced through a dual mechanism of promoting ceramide synthesis and inhibiting melanin transport, and the problems that a traditional whitening agent has different degrees of irritation, allergy phenomena such as skin redness, swelling and pain are easily caused by improper use, and a skin intolerance phenomenon exists are solved.

The invention belongs to the technical field of medical and mechanical combinations, and discloses a high-permeability and low-sensitivity ripdicaine wound patch and a preparation method thereof.The high-permeability and low-sensitivity ripdicaine wound patch comprises a wound patch body, and the wound patch body is prepared from, by mass, 0.1%-0.4% of sodium hyaluronate, 1.5%-3.5% of lidocaine, 1.5%-3.5% of prilocaine, 3%-10% of solvent, 0.5%-8% of emulsifier, 2%-10% of humectant, 0.1%-5% of soothing agent, 0.1%-1.5% of stabilizer, 0.1%-1% of thickener and the balance water. According to the present invention, the total amount of the raw materials is 100%, the total amount of the raw materials is 100%, the total amount of the raw materials is 100%, the total amount of the raw materials is 100%, the total amount of the raw materials is 100%, the total amount of the raw materials is 100%, the total amount of the raw materials is 100%, the total amount of the raw materials is 100%, and the total amount of the raw materials is 100%. And the anesthetic has the advantages of quick effect taking, low sensitivity, capability of resisting moist heat sterilization and good stability.

The invention relates to the technical field of biomedical materials, and discloses an electret electrostatic therapy membrane and a preparation process thereof.The electret electrostatic therapy membrane is prepared from, by mass, 15%-20% of fluorinated polyether ester, 10%-20% of a composite nano-fiber material, 10%-20% of a composite nano-fiber material, 10%-20% of a composite nano-fiber material and the balance water. 1%-2% of carboxymethyl chitosan; 2-5% of nano cerium oxide particles with the particle size of 50-100 nm; 0.5-1.0% of graphene quantum dots, the particle size of which is 5-10 nm; 1%-2% of sodium hyaluronate; the components are prepared into a film through an electrostatic spinning method, electret performance is given to the film through a charge injection process, finally, the film body is attached to a flexible silica gel adhesion layer, and the flexible silica gel adhesion layer is externally coated with a peelable protective film so that the structural integrity can be kept before the flexible silica gel adhesion layer is used. The composite membrane body disclosed by the invention shows excellent adhesion, charge activation capability and thermal response performance in applications of electrostatic therapy, dielectric assisted stimulation and the like, and has good multi-scene adaptability and clinical application potential.

The invention belongs to the technical field of biomedical tissue engineering materials, and particularly relates to injectable composite plastic gel and a preparation method thereof. The injectable plastic gel provided by the invention is formed by suspending and compounding the cross-linked sodium hyaluronate gel particles and the biological tissue extracellular matrix particles, the two material particles in the injectable composite plastic gel are uniform in size and controllable in size, other toxic catalysts do not need to be added in the preparation process, and the injectable plastic gel is easy to prepare. The collagen / elastin composite material is rich in collagen and elastin, and shows good biomechanical properties. Meanwhile, the composite plastic gel contains a plurality of bioactive factors, and after the composite plastic gel is injected and filled into a body, the composite plastic gel is slowly degraded and can promote the generation and ingrowth of autologous fat cells and microvessels, so that the balance of degradation and remodeling is achieved. The preparation method of the injectable plastic gel provided by the invention can be widely applied to the fields of plastic surgery, medical beauty and the like.

The invention provides anti-aging moisturizing essence and a preparation method thereof, and belongs to the technical field of cosmetics. The essence is prepared from a plant extract, sodium pyrrolidone carboxylate, hexapeptide, nicotinamide mononucleotide, vitamin B5, galactose yeast fermentation product filtrate, b-glucan, sodium hyaluronate, glycerol, tranexamic acid, blue copper peptide, arbutin, nicotinamide, vitrin, a bifidus yeast fermentation product, a bifidus yeast fermentation lysate and the like. Wherein the plant extract is prepared by mixing rosemary, frankincense resin, tea flowers, sandalwood and jasmine flowers through ultrasonic extraction, comprehensive skin care is achieved from multiple angles of anti-aging, whitening, moisturizing and repairing, the overall health of the skin is guaranteed, and the skin care cream is suitable for various skin types.

The invention provides silk fibroin gel and a preparation method thereof, and relates to the field of biological medicines.The preparation method comprises the steps that 1, degummed silk or regenerated silk fibroin is dissolved in a lithium bromide solution, and a silk fibroin solution is obtained; (2) adding a cross-linking agent and sodium hyaluronate into the silk fibroin solution, uniformly mixing, and incubating to obtain silk fibroin gel; wherein the use amount of the sodium hyaluronate is 2%-14% of that of the degummed silk or the regenerated silk fibroin. The silk fibroin gel prepared by the invention is stable in mechanical property, can be stably stored for a long time, and has excellent biocompatibility and filling property.

The invention belongs to the technical field of bioengineering medicines, and particularly relates to a gel dressing for repairing skin wounds and a preparation method of the gel dressing. The anti-fouling coating is prepared from the following raw materials in parts by weight: 65 to 75 parts of polyvinyl alcohol, 14 to 20 parts of sodium alginate, 4 to 8 parts of sodium carboxymethyl cellulose, 1 to 3 parts of sodium hyaluronate, 12 to 22 parts of glycerol, 1 to 3 parts of surface anti-fouling additive, 6 to 10 parts of antibacterial microcapsule and 2 to 2.8 parts of compound ion. According to the invention, a PVA freeze-thaw physical network and an alginic acid Ca / Zn composite ion network cooperate to limit a pore channel, so that stable forming is realized; a chitosan / sodium tripolyphosphate microcapsule is prepared from polyhexamethylene biguanide hydrochloride and covered with sodium alginate, release sensitive to pH / ionic strength, acceleration in an inflammation stage and self-limiting in a later stage are constructed, and long-acting bacteriostasis is formed by SA-Zn site slow release; the stability and staged adaptation are highlighted through processes such as encapsulation, low-shear doping and the like and raw material synergy.

The present invention relates to the fields of medicine and cosmetology, and discloses a cell active peptide composition that promotes the regeneration of multi-type collagen structural proteins, its preparation method, and its application in medicine and cosmetology. The composition uses raw materials such as tripeptide-10 citrulline, hexapeptide-9, hydrolyzed sodium hyaluronate, γ-aminobutyric acid, decarboxylated carnosine hydrochloride, acetyl tetrapeptide-3, acetyl tetrapeptide-11, palmitoyl dipeptide-7, and palmitoyl pentapeptide-4. The composition can promote the coordinated expression of skin type I, type III, type IV, type VII, type XVII collagen, fibronectin, elastin, and glycosaminoglycans; prevent collagen cross-linking, maintain triple helix structure, and inhibit collagen degradation. Applied to dermatology and cosmetology, it can accelerate the regeneration of structural proteins such as skin collagen, repair skin damage, reduce wrinkles such as crow's feet, tear groove lines, nasolabial folds, and under-eye lines, solve the skin aging problem caused by the loss of structural proteins such as collagen, and improve skin elasticity and firmness.

The invention provides glycosaminoglycan hydrogel with a physical and chemical double crosslinking mechanism as well as a preparation method and application thereof, and relates to the technical field of biological materials. The glycosaminoglycan hydrogel is prepared from the following raw materials: oxidized sodium hyaluronate, chondroitin sulfate, epsilon-polylysine hydrochloride, a polydopamine-titanium dioxide compound and a stabilizer. The glycosaminoglycan hydrogel is prepared through a physical and chemical double-crosslinking mechanism under the specific raw materials and proportion, the problems of cytotoxicity and the like caused by use of a crosslinking agent or introduction of other solvents are avoided, a stable covalent network is constructed through chemical crosslinking, the gel is endowed with the self-repairing characteristic through physical crosslinking, and the self-repairing performance of the hydrogel is improved. And the viscosity of the product is remarkably improved, so that the hydrogel has stronger mechanical support performance, is suitable for wound repair, wound healing and the like, and has good antibacterial activity and stability.

The invention relates to a skin care composition for women and children and a preparation method thereof. The composition comprises the following components: tremella fuciformis extract nanocrystals, a calendula extract, an oat extract, dipotassium glycyrrhizinate, panthenol, sodium hyaluronate and the like. By using a nanocrystalline technology and a compound stabilizer, the moisturizing and anti-oxidation effects of the product are remarkably improved, and the product is suitable for various skins, especially sensitive skins. The product is safe and mild, effectively reduces skin irritation and improves the skin barrier function. The problems that an existing skin care product is not lasting in moisturizing effect and insufficient in oxidation resistance are solved, and an efficient and stable skin care solution is provided.

The invention discloses anti-radiation hydrogel capable of being used for interventional radiosurgery and a preparation method and application thereof.The anti-radiation hydrogel is in bridge connection with polymer chains of sodium alginate and sodium hyaluronate through the physical interaction between Fe < 3 + > and carboxyl, and the reversible interaction between Fe < 3 + > and carboxyl endows the hydrogel with the shear thinning characteristic; the injectability is ensured; the bismuth oxide nano-particles and the barium sulfate nano-particles are doped to achieve efficient attenuation of X-rays in the range of 20-100 keV, and meanwhile, the complementary K-edge absorption characteristics of the bismuth oxide nano-particles and the barium sulfate nano-particles are utilized, and the radiation absorption effect of a hydrogel network structure is combined, so that broad-spectrum radiation protection is achieved; according to the invention, acrylamide is taken as a raw material, an interpenetrating network elastic hydrogel of three polymers is formed under the action of polymerization under thermal initiation of acrylamide, the conversion from an injectable state to a solid state is realized, and at the moment, the cured hydrogel has tough mechanical properties, can also form a protective layer similar to gloves, and can be used for radiation protection in interventional operations.

The invention belongs to the technical field of medicines, and particularly relates to a multi-effect composition containing ergothioneine, a preparation method of the multi-effect composition and application of the multi-effect composition in eye products. The multi-effect composition is prepared from ergothioneine, tromethamine and sodium hyaluronate according to the mass ratio of (0.5 to 10) to (1 to 5) to (0.5 to 3). According to the multi-effect composition containing the ergothioneine, the tromethamine in the composition can protect the stability of the ergothioneine under the conditions of illumination and high temperature; the ergosulfide can protect the activity of macromolecular sodium hyaluronate. The synergistic compatibility of the ergothioneine, the sodium hyaluronate and the tromethamine is utilized, so that the moisturizing effect and the eye protection effect of the composition can be remarkably improved. The ergothioneine-containing multi-effect composition provided by the invention has the effect of preventing cataract through specific components and proportions, and has the advantages of long-acting eye moistening and good stability.

This invention provides a composition for improving bone and joint health, its preparation method, and its application, relating to the field of bone and joint health products technology. By weight, the composition for improving bone and joint health comprises the following components: 0.5-5 parts collagen peptides, 5-30 parts mangosteen extract, 0.5-3 parts non-denatured type II collagen peptides, 0.1-2 parts milk mineral salts, 0.3-3 parts bone collagen peptides, 0.1-2 parts cartilage extract, 0.1-2 parts N-acetylglucosamine, 0.1-2 parts sodium hyaluronate, and 0.3-3 parts turmeric extract. This invention, through multiple combinations of mangosteen extract and turmeric extract, and cartilage extract and sodium hyaluronate, obtains a composition that is low in cost, highly safe, and has a good effect on the prevention or improvement of bone and joint diseases.

The invention discloses a composition containing cactus fermentation liquor and a preparation method and application of the composition in cosmetics, the cosmetic composition containing the cactus fermentation liquor comprises the cactus fermentation liquor, Ectoine and sodium hyaluronate according to a specific proportion, the cactus fermentation liquor is prepared by performing enzymolysis pretreatment on succulent stems of cactus, and the cactus fermentation liquor is prepared by performing enzymolysis pretreatment on the succulent stems of the cactus. Sequentially inoculating bacillus licheniformis and lactobacillus plantarum for sequential fermentation; and finally, purifying and enriching by ultrafiltration and nanofiltration two-stage membrane separation technologies. A product rich in small molecule active peptide and specific organic acid is obtained through biotransformation process combination, so that the final cosmetic composition has remarkable skin barrier repairing and anti-oxidation effects.

The invention provides eye protection liquid for improving eye microcirculation and a preparation method thereof, and belongs to the technical field of medical configuration products. The composition comprises the following components: surface-modified magnetic nanoparticles, a calendula extract, a fermented dogwood extract, xanthophyll, taurine, sodium hyaluronate, hydrolyzed sodium hyaluronate, soya bean lecithin, borneol and fermented vegetable oil. The efficiency of active ingredients is improved through a double-fermentation technology, magnetic targeting and multi-channel compounding are combined, and the preparation method has remarkable advantages in the field of improving periorbital microcirculation. The traditional Chinese medicine composition has an obvious relieving effect on asthenopia and dry skin around eyes; the components of the eye microcirculation eye protection liquid are mild, and adverse reactions such as allergy cannot be caused.

The invention relates to absorbable adhesive styptic powder and a preparation method thereof, and the absorbable adhesive styptic powder is characterized in that the absorbable adhesive styptic powder is formed by cross-linking aldehyde polysaccharide and a polyamino compound through Schiff base reaction, the raw materials are selected from at least one of glucan, sodium carboxymethyl cellulose, sodium hyaluronate, chitosan and carboxymethyl starch; the polyamino compound is selected from at least one of polylysine, polypeptide, bovine serum albumin and polyamine; the styptic powder is porous particles with the particle size of 10-1000 meshes, is cured into gel within 10 seconds after being in contact with body fluid, and is completely degraded within 15-60 days. According to the scheme, the styptic powder has the advantages of rapid wet adhesion, controllable degradation and excellent processability, and is an urgent clinical demand.

The invention relates to the technical field of cosmetics, and particularly discloses emulsion type foaming cleaning scrub cream with a skin care effect and a preparation method of the emulsion type foaming cleaning scrub cream. The scrub cream is prepared from the following raw material components in percentage by mass: 8 to 15 percent of glycerol, 0.2 to 0.9 percent of sodium hydroxide, 0.3 to 0.8 percent of citric acid, 0.03 to 0.2 percent of EDTA (Ethylene Diamine Tetraacetic Acid) disodium, 0.5 to 1.5 percent of an auxiliary agent, 1.5 to 3.0 percent of a thickening agent A, 1.5 to 3.0 percent of a thickening agent B, 5.86 to 1457 percent of an emollient, 12 to 22 percent of a surface active foaming agent, 0.8 to 3.0 percent of an emulsifying agent, 2.5 to 13 percent of a cutin stripping agent, 0.7 to 1.3 percent of a preservative, 0.32 to 0.92 percent of a skin conditioning agent and the balance of water, the skin conditioner is a mixture prepared from sodium hyaluronate, tocopherol, papain, nicotinamide, carnosine, panthenol and phytosterol oleate.

The invention relates to a sodium hyaluronate fermentation filtrate as well as a preparation method and application thereof, and belongs to the technical field of cosmetics. Through a two-stage fermentation mode, the fermentation filtrate containing sodium hyaluronate is prepared by recombining bacillus subtilis, and then residual nutrient substances in a culture medium are consumed by inoculating bacillus velezensis, so that the nutrient substances are metabolized into active substances with repairing and strengthening effects on hair; the prepared sodium hyaluronate fermentation filtrate has the effects of repairing scalp and strengthening hair. The sodium hyaluronate filtrate disclosed by the invention can be used for well reducing the content of NO in macrophages (the NO content of cells is increased due to malassezia lysate), can be used for removing active oxygen ROS of HaCaT cells and increasing the total tensile strength of hair, and has the potential effects of relieving scalp, resisting oxidative stress and enhancing the toughness of the hair.

The invention discloses bioactive gel for accelerating wound healing. The gel is prepared from the following raw materials in percentage by weight: 0.8%-1% of bomer 980, 5%-5.5% of glycerol, 15%-20% of white vaseline, 51.7%-55% of phosphate buffer, 1.8%-2% of nano royal jelly acid, 2%-3% of recombinant III type human collagen, 0.4%-0.5% of sodium hyaluronate, 1%-3% of sodium alginate, 20%-25% of polyethylene glycol-400, 1.5%-3% of dopamine-methacrylamide copolymer, 0.5%-0.8% of nano silver and 0.3%-0.5% of phenoxyethanol. The nano royal jelly acid and the nano silver have a synergistic antibacterial effect, so that the inhibition effect on drug-resistant bacteria such as MRSA and pseudomonas aeruginosa is remarkably improved, and meanwhile, the wound epithelization can be accelerated and scar formation can be reduced through the dual effects of the recombinant III type collagen and the acetylated sodium hyaluronate. The defects that a traditional dressing is narrow in antibacterial spectrum, single in repairing effect, poor in environmental adaptability and the like are overcome, and the dressing is particularly suitable for complicated wounds such as diabetic foot ulcer and second-degree burn.

The invention relates to the technical field of skin care products, and discloses an anti-aging and whitening composition and a preparation method thereof.The anti-aging and whitening composition comprises anti-aging and whitening components, whitening synergistic components, moisturizing and repairing components and deionized water, and the anti-aging and whitening components comprise botryine, ergothioneine and Ectoine; wherein the mass ratio of the glassine to the ergothioneine to the ectoine is (1.2 to 2.0) to (0.4 to 0.7) to (1.0 to 1.5); the whitening synergistic component comprises one or more of nicotinamide, glabridin and tranexamic acid; the moisturizing and repairing component is prepared from one or more of sodium hyaluronate, ceramide NP, glycerol and 1, 3-butanediol. Experiments show that the mass ratio of the glassine to the ergothioneine to the ectoine is (1.2-2.0): (0.4-0.7): (1.0-1.5), so that the glassine, the ergothioneine and the ectoine show a remarkable synergistic effect (in some cases, the synergistic index CIlt is 0.85), and the anti-aging and whitening functions of the composition containing the glassine, the ergothioneine and the ectoine are improved.

The invention provides gelatin derivative microspheres coated with stem cell exosomes, a preparation method of the gelatin derivative microspheres and application of the gelatin derivative microspheres in preparation of external ophthalmic preparations, and relates to the technical field of medicines. The gelatin derivative microsphere mainly comprises a microsphere core and a shell, wherein the microsphere core is a stem cell exosome coated with a gelatin derivative; the shell is obtained by crosslinking a gelatin derivative and sodium hyaluronate. The gelatin derivative used in the invention not only has good compatibility with the stem cell exosome, but also has good dispersibility in tears or periorbital secretion after being prepared by crosslinking the gelatin derivative and sodium hyaluronate, so that the elimination of an eye protection mechanism to the microspheres can be reduced, and the slow release effect of the exosome can be improved; besides, the shell formed by the hyaluronic acid has a very good tackifying effect, so that the retention time of the gelatin derivative hyaluronic acid microspheres in eyes is prolonged, and the problem of burst release of the medicine is also avoided by virtue of the double-layer coated microsphere structure.

The invention belongs to the technical field of exosome freeze-dried powder, and discloses exosome freeze-dried powder and a preparation method thereof, the exosome freeze-dried powder contains mesenchymal stem cell exosome, trehalose, sodium hyaluronate, hydroxypropyl-beta-cyclodextrin, glutathione, ceramide and fructo-oligosaccharide. According to the exosome freeze-dried powder, hydroxypropyl-beta-cyclodextrin, glutathione, ceramide and fructo-oligosaccharide are added, the membrane structure integrity of the exosome is effectively protected, the retention rate of active substances in the exosome freeze-dried powder is high, and therefore the effects of resisting inflammation, regulating cell metabolism, promoting tissue repair and the like of the exosome can be fully exerted. In addition, glutathione can directly remove skin free radicals and inhibit oxidative stress injury, and has an anti-oxidation effect; ceramide can also supplement skin lipid barrier, enhance the water locking capacity and enhance the moisturizing effect of sodium hyaluronate; fructo-oligosaccharide can also regulate skin micro-ecological balance, and has anti-inflammatory and bacteriostatic effects.

The invention belongs to the technical field of medical biological materials, and particularly relates to a sodium hyaluronate gel regeneration filler for injection and a preparation method and application thereof.The sodium hyaluronate gel serves as a carrier to disperse acellular matrix particles, the sodium hyaluronate gel forms a micron-sized porous structure in the cross-linking process through a microbubbling technology, and the sodium hyaluronate gel is prepared into the sodium hyaluronate gel regeneration filler for injection and the preparation method and application of the sodium hyaluronate gel regeneration filler. A local cross-linked network is strengthened by combining a secondary cross-linking process, high elastic modulus is realized while the content of sodium hyaluronate is reduced, so that the porous structure has excellent instant filling and shaping capability and controllable degradation behavior, the porous structure can promote permeation of hyaluronidase, the degradation period of the hyaluronidase is matched with the tissue regeneration process, and the tissue regeneration effect is improved. And the acellular matrix particles can continuously induce adhesion, migration, proliferation and differentiation of endogenous cells of tissues, synergistically promote in-situ tissue regeneration, effectively reduce repeated injection requirements and reduce long-term complication risks, and have a good application prospect in soft tissue filling and repairing.

The invention discloses a hyaluronic acid moisturizing and repairing composition and a preparation method thereof, belongs to the field of cosmetics, and specially meets the requirement of dry skin. The composition consists of a core moisturizing component, an auxiliary functional component and the balance of purified water, the core moisturizing component comprises hyaluronic acid components with oligomeric, low, medium and high molecular weights and sodium hyaluronate cross-linked polymer microbeads with gradient particle sizes; the auxiliary functional components comprise bionic liposome, a nonionic emulsifier, polyol, a natural penetration enhancer, a retardant and a preservative. The gradient microbeads and HA with different molecular weights achieve all-around water replenishing and locking from the surface layer to the deep layer of the skin, the bionic lipidosome promotes component permeation and repairs the skin barrier, the composition is good in stability, mild and free of irritation, the problems that the deep layer of the dry skin is dry, water is continuously deficient, and the barrier is fragile can be effectively solved, and the composition has wide cosmetic application prospects.

The invention provides an external application medicine for incontinent dermatitis and a preparation method thereof. The composition is prepared from active ingredients such as a radix sophorae flavescentis extract, calamine, vitamin E, ceramide, a herba portulacae extract, glycyrrhizic acid, chitosan and colloidal oat powder according to a specific proportion. Moisturizing matrixes such as sodium hyaluronate and glycerol and functional components such as tea tree essential oil are supplemented. And through a preparation process of matching high-speed shearing with ultrasonic dispersion, uniform dispersion and stability of each component are ensured. Experimental results show that the composition shows a remarkable synergistic effect in the aspects of anti-inflammation, antibiosis, skin barrier repair and the like, the comprehensive relieving and repairing effect of the composition is superior to that of a conventional drug control, and all the components and a special preparation process are necessary for achieving the optimal effect. The product has no irritation to human skin, is good in safety, can be prepared into various dosage forms such as cream, hydrogel or spray, and is suitable for nursing and repairing sensitive skin.

The invention relates to the technical field of polypeptide detection, and particularly discloses a method for determining the content of human epidermal growth factors in sodium hyaluronate composite gel. The method comprises the following steps: S1, carrying out enzymolysis on sodium hyaluronate in the sodium hyaluronate composite gel by using an enzyme to obtain a test solution; s2, measuring a blank matrix solution containing no human epidermal growth factors, and adding enzyme for enzymolysis to obtain a blank matrix solution; s3, measuring the human epidermal growth factor, and diluting the human epidermal growth factor with the blank matrix solution to obtain a reference substance solution; and S4, detecting the test solution and the reference solution by using a high performance liquid chromatography and an ultraviolet detector, and determining the content of the human epidermal growth factor by using an external standard method. According to the method, hyaluronidase is used for pre-treating the test sample, macromolecular and high-viscosity sodium hyaluronate is subjected to enzymolysis to form micromolecular sugar, the method is compatible with the same liquid chromatography separation system, the content of the human epidermal growth factors in the test sample is measured by adopting an HPLC (High Performance Liquid Chromatography) combined ultraviolet detector, and the method is high in specificity, high in accuracy, low in detection limit and good in repeatability.

The invention provides a hyaluronic acid liposome with double anti-wrinkle and skin feeling improving functions, a preparation method thereof, essence, a mask, a toning lotion and application, and relates to the field of cosmetics. The hyaluronic acid liposome with the dual anti-wrinkle and skin feeling improving functions is prepared from the following raw materials in percentage by mass: 1 percent to 5 percent of hydrogenated lecithin, 0.5 percent to 1.5 percent of PEG-60 hydrogenated castor oil, 0.5 percent to 2 percent of Pellicer L-30, 2 percent to 10 percent of PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerol, 2 percent to 50 percent of glycerol, 1 percent to 2 percent of hexanediol, 5 percent to 15 percent of polydimethylsiloxane, 0.05 percent to 0.5 percent of micromolecular hydrolyzed sodium hyaluronate, 0.05 percent to 0.1 percent of macromolecular sodium hyaluronate and the balance of water, wherein the total mass of the raw materials is 100 percent. Meanwhile, micromolecular hyaluronic acid and macromolecular hyaluronic acid are wrapped, so that the synergistic effect of the large and small molecular hyaluronic acid is realized.

The invention provides a sandwich-structure bidirectional film-forming composition and a preparation method and application thereof, and relates to the technical field of sunscreen, the preparation method comprises the following steps: mixing isododecane, trimethylsiloxy silicate ester and disteardimonium hectorite to obtain an oil phase mixture; mixing butanediol, the sodium hyaluronate cross-linked polymer and the like to obtain a water-phase mixture; homogenizing the oil phase mixture and the water phase mixture; performing curing reaction and homogenizing pretreatment. According to the sandwich structure disclosed by the invention, the disteardimonium hectorite is taken as a carrier, an oil phase forms an initial hydrophobic membrane, the oil phase expands when encountering water and sweat, sunscreen protection is synergistically enhanced, and the prepared composition of the sandwich structure is good in stability.