170results about How to "Non-allergic" patented technology

The invention relates to a chitosan nano silver gelata used for treating an inflammation in a lower genital tract, cervicitis and cervical erosion of female and empyrosis, scalding, bedsore infection and other skin inflammations such as tinea manus and pedes, and various wound infections, etc. The medicinal raw materials of the chitosan nano silver gelata of the invention are the nano silver and chitosan polymer in respective therapy dose; the nano silver is the nano silver powder or the nano silver colloid; the chitosan polymer is the chitosan and the chitin and one or more than one derivative of the chitosan and the chitin. The product of the invention has the advantages of high efficiency and being nonpoisonous, and has an extremely strong antibacterial action and an excellent therapeutic effect; compared with other nano silver gelata, the chitosan nano silver gelata of the invention has the advantages of perfect sterilizing effect, long-lasting effect and tissue repair function.

The invention relates to a nanometer silver aqueous solution preparation. Its components and weight percentage are: nanometer silver 0.05-1.5, the dispersant 0.5-1.5, the reducer 0.05-0.2, the stabilizer is nanometer silver 0.5-1.5, the dispersant 0.5-1.5, the reducer is 0.05-0.2, the stabilizer is 0.5-10, and the deioned water is 1000. The invention also relates the manufacturing method for above mentioned nanometer silver aqueous solution preparation, and the usage for curing man social disease, and the using method for ejecting the medicine into bladder through urethra. The reducer and stabilizer in the solution accord with the standards of America FDA or china sanitary department.

The invention relates to a rice protein polypeptide and also relates to a composite enzyme preparation method of the rice protein polypeptide. The preparation method comprises the following steps: size mixing, degreasing, centrifuging, homogenizing, enzymolysis reaction, sterilization and enzyme inactivation, centrifugal separation, concentration, drying and the like. The rice protein polypeptideprepared by using the preparation method has a protein content of 80% in percentage by weight and a fat content of 1% or below in percentage by weight, and has high bioactivity; the peptides of whichthe molecular weight distribution is 100-1000 Da account for more than 90% of the total protein content; and the product are completely soluble in water.

The present invention relates to the technical field of daily chemical products, particularly to a plant extract and an eye essence liquid. The plant extract comprises a sambucus williamsii extract, a cardiospermum halicacabum l extract, an olive leaf extract and a jujube extract. According to the present invention, the plant extract has effects of skin elasticity increasing, anti-wrinkle effect and skin firming effect, and provides the good effect superior to the single use of the sambucus williamsii extract, or the compounded use of the cardiospermum halicacabum l extract, the olive leaf extract and the jujube extract; and the eye essence liquid contains a variety of natural plant extracts, and has effects of radiation resistance, improvement of resistance and immunity of eye cells, regeneration and reinforcement of retina, optic nerves and visual blood vessels, acceleration of eye blood microcirculation, improvement of eyesight, delaying of skin cell aging, improvement of skin hydration and roughness, acceleration of skin renewal rate, improvement and prevention of wrinkle generation, and promotion of skin firming.

The invention relates to a process for preparing monoazo 2:1 chrome complex dye comprising, reacting one or more categories of aromatic ortho-aminophenol with sodium nitrite in water solution of hydrochloric acid or sulfuric acid, subjecting the reacted mixture to coupling reaction with B-naphthol queous alkali, filtering and drying the coupling product, reacting with trivalent chromium salt in organic solvent at the presence of acid-binding agent. The process according to the invention can be applied in particular to the preparation of color-developing agent for ink-ejecting ink, as well as the coloring charge modifier during the photoelectric image formation process.

The invention provides a nanoemulsion of ginsenoside, its preparation method and application. The ginsenoside emulsion provided by the invention contains ginsenoside, water, oil, an isotonic agent and a surfactant, and may also contain a stabilizer. The emulsion provided by the invention does not contain organic solvents and solubilizers with toxic and side effects, so it is non-allergic and has small side effects; and the content of active ingredients in the oil phase of the nanoemulsion provided by the invention is relatively high, which meets the high clinical efficacy requirements. At the same time, the emulsion can also change the distribution of saponins in the human body, improve the bioavailability of the drug, and can make the ginsenosides concentrate in the tumor site in the body, so as to improve the antitumor effect of the compound.

The invention discloses a nano silver anti-inflammatory gel for treating gynecologic inflammation and a preparation method thereof. The gynecologic inflammation is a common frequently-occurring disease; and an ideal effect cannot be easily obtained from the traditional therapeutic drug. 1000g of gel is prepared from 100-200 PPM of nano silver powder, 2-3g of camellia oil, 2-3g of eucalyptus oil, 0.002-0.008g of sodium dodecyl sulfate, 10-20g of propolis, 4-6g of carbopol, 4-6g of triethanolamine and the balance of pure water. The nano silver anti-inflammatory gel has excellent curative effect on pathogenic microorganism infective inflammation diseases such as gynecologic inflammation, cervicitis, or mixed infection. The gel disclosed by the invention is directly administered through vagina; and the drug directly achieves the focus of infection, and is explicit in targeting property, concise and convenient. The nano silver anti-inflammatory gel has strong inhibiting or killing roles on various pathogens such as gram positive bacteria, gram negative bacteria, mould, trichomonad and the like by experimental and clinical validation. The nano silver anti-inflammatory gel has good curative effect on colpitis, cervicitis, annexitis and pelvic inflammation caused by lactobacillus, mycete, candida albicans, HPV (human papillomavirus) and the like.

A percutaneous paster of hydrophilic gel for medicine features that its gel layer contains the volatile oil of bupleurum root, hydrophilic gel, cross-linking agent, humectant, surfactant, filler, adhesive, osmosis promoter and solvent. Its preparing process is also disclosed.

The invention discloses a preparing method of a ginsenoside-multi-component jointly-loading targeting nanometer system.The preparing method includes the steps that after egg yolk lecithin, cholesterol and polyethylene glycol-dipalmitoyl phosphatidyl choline are dissolved, warm water is slowly and dropwise added for stirring, and a lipid water solution is obtained; the multi-component active ingredients containing ginsenoside Rg3, ginsenoside Rh2 and ginsenoside Rb1 and a copolymer of polylactic acid-hydroxyacetic acid are dissolved to be slowly and dropwise added into the lipid water solution to be stirred to be even, a solvent is removed, and lipidosome nanometer particles are obtained; aptamer is dissolved to be modified to the surfaces of the lipidosome nanometer particles, and an even and opalescence-flooding nanometer system solution is obtained by filtering and sterilizing.According to the preparing method, the anti-tumor effect of medicine is improved with the nanocrystallization technology, joint transmission of a multi-component tumor tissue can be achieved in the mode that the three ginsenoside ingredients are jointly loaded to the nanometer system, and therefore the problems that the metabolic behaviors and the tumor-cell entering capacity of different ingredients are different are solved.

The invention relates to the field of medical technology, in particular to a new injection for teniposide mainline and a preparation method of the new injection. Components of the injection include teniposide, Tween 80, phospholipid, a stabilizer and an injection solvent. As no Cremophor EL is contained, compared with existing clinical preparations, not only the teniposide injection has few side effects and good stability and improves the medicine-taking compliance of patients, but also the preparation method of the teniposide injection is simple and easy to operate and the teniposide injection is suitable for large-scale preparation and industrial production.

The invention relates to a long-acting mosquito expelling gel and belongs to the field of daily chemical goods. The long-acting gel comprises an A phase, a B phase and a C phase in percentage by weight: the A phase: 40.00 to 60.00 percent of deionized water, 0.20 to 1.20 percent of carbomer resin, 0.05 to 1.00 percent of hydroxypropylmethyl cellulose and 0.01 to 1.00 percent of disodium EDTA; the B phase: 10.00 to 30.00 percent of alcohol, 10.00 to 25.00 percent of dimethyl phthalate, 0 to 10.00 percent of geranium extract and 0.01 to 1.00 percent of menthyl lactate; and the C phase: 0.10 to 1.00 percent of diisopropylamine. The long-acting mosquito expelling gel has a mild formulation, comfortable coating feel, is fresh and not sticky, has safe use and remarkable mosquito expelling effect which reaches over 10 hours and meets requirement of medicine specially needed for military.

The invention discloses a bio-antimicrobial water-absorbing sanitary material, which is applied to medical dressing materials, sanitary napkins, sanitary towels and paper diapers, and a preparation method of the bio-antimicrobial water-absorbing sanitary material. An antimicrobial liquid-permeable surface layer, an antimicrobial functional absorbent core and a liquid-impermeable bottom layer are sequentially arranged from top to bottom in a superposed mode, wherein the antimicrobial liquid-permeable surface layer is a single-layer or double-layer non-woven fabric which is processed by virtue of a bio-antimicrobial agent, and the bio-antimicrobial agent is one or more of epsilon-polylysine and / or epsilon-polylysine hydrochloride, natamycin and nisin; the antimicrobial absorbent core comprises the bio-antimicrobial agent which is one or more of epsilon-polylysine, epsilon-polylysine hydrochloride, natamycin and nisin, a polymer absorbent, fluff pulp and plant extracts; and a porous air-permeable thin film serves as a backing layer. The bio-antimicrobial water-absorbing sanitary material has the advantages of being good in antimicrobial endurance, broad in antimicrobial spectrum, high in biological safety and low in reverse osmosis rate.

The invention relates to rice protein yoghurt and a preparation method thereof. The method comprises the following steps of: preparing rice protein slurry; preparing additive solution; mixing milk, rice protein slurry and additive solution, and homogenizing; sterilizing the obtained homogenous liquid, and cooling; then, inoculating lactic acid bacteria TY367 and lactic acid bacteria TY971, and fermenting; and after the fermentation is over, refrigerating and performing after-ripening to obtain the rice protein yoghurt. Through the rice protein yoghurt, complementary nutrition of animal / plant protein can be realized, nutrition balance is obtained, and a human body can obtain balanced and proper amount of amino acid, thereby greatly improving the nutritional and biological values of milk; and moreover, the rice protein does not cause any anaphylaxis, thus possible anaphylaxis caused by adding other plant proteins is avoided.

The present invention relates to a high-concentration-type water soluble vitamin used for intravenous injections, with each bottle containing 6.2 +-1.6 mg aneurine mononitrate, 9.8+-2.5 mg lactoflavin sodium phosphate, 80+-20 mg nicotinic amide, 9.8+-2.5 mg phosphopyridoxamine, 33.0+-8.3 mg panthoject, 200+-50 mg vitamin, 120 +-30 mu g biotin, 0.8+-0.2 mg acidum folicum, 10.0+-2.5 mu g vitamin B12 and 1-6ml water for injection. The preparing method is as follows: stirring the components mentioned above with water for injection until they are entirety dissolved, freezing-drying them in a freezing-drying machine, pressing them to prepare the water soluble vitamins used for intravenous injection. The water soluble vitamins used for intravenous injection in accordance with the present invention can be used for guarding against and curing cacotrophia caused by deficiency of water soluble vitamins and for auxiliary cure of chronic diseases such as chronic hepatic disease and the like; the water soluble vitamins used for intravenous injection possesses advantages of rapid vitamin supplying, medicament curative effect enhancement, reduced side-effects and the like, can satisfy clinical require for supplying of serious water soluble vitamins deficiency caused by diseases.

The invention discloses a method for separating and purifying ACE inhibiting active peptide from rice dregs, taking rice dregs protein substrate as raw material. It comprises following steps: (1) separating rice dregs protein substrate with dextran gel Sephadex G-15 and getting separted component; testing ACE inhibiting activity for each got component; (2) vacuum cooling and drying the component with highest test value for ACE inhibiting activity to prepare freeze powder, dissloving freeze powder into distilled water to prepare solution with concentration being 5 mg freeze powder / ml, separating said solution though inverse high efficiency liquid chromatography, and getting purified ACE inhibiting active peptide with the chromatogram peak value being the largest. The molecular weight of produced product is 645.3, and the primary structure of its amino acid is Phe-Asn-Gly-Phe-Tyr. The invention is characterized by easy device, simple process, good repeatability and wide application.

The invention discloses an oral care composition and a preparation method thereof. According to the invention, Blumea balsamifera is adopted as a monarch drug, honeysuckle and loquat leaves are taken as minister drugs, Phyllanthus emblica, lophatherum gracile, herba eupatorii, mint and Agastache rugosa are used as assistant drugs, and licorice is employed as a guide drug. Properties of all the drugs are coordinated to lead the drugs to lesions directly. The drugs involved in the composition have compatibility, complement each other, and together achieve the efficacy of clearing away heat and toxic materials, diminishing inflammation and relieving pain, resisting and inhibiting bacteria, and cleaning the oral cavity.

The invention discloses a chitosan quaternary ammonium salt couplant and a preparation method thereof. The chitosan quaternary ammonium salt couplant is prepared from 0.1-0.9wt% of Carbomer 941, 0.5-6wt% of phenoxyethanol, 0.01-1.0wt% of hydrochloric acid, 0.1-0.8wt% of chitosan quaternary ammonium salt, 1.2-10wt% of triethanolamine, 2-20wt% of a humectant and the balance distilled water. The chitosan quaternary ammonium salt couplant has the advantages of good bactericidal effects, good environmental performances, no carcinogenesis on the human body, clarification, transparency, alcohol fragrance, good homogeneity and good fineness.

The invention discloses a formula of traditional Chinese medicines for treating soft tissue injury and a method for preparing a preparation thereof. The formula comprises the following six traditional Chinese medicines in parts by weight according to mixture ratio: 3-9 parts of ceratostigma willmottianum, 1-5 parts of hyacinth bletilla, 1-5 parts of Gaultheria yunnanensis, 0.1-0.5 part of dragon's blood, 0.5-2 parts of turpentine and 0.3-2 parts of borneol which are prepared into an externally-applied traditional Chinese medicine preparation. The prepared externally-applied traditional Chinese medicine preparation is a spraying agent, a tincture, a liniment or a film coating agent. The result of experiments shows that the invention has the advantages of no irritability, no hypersensitivity, quick acting of the medicines, obvious effects of promoting the restoration of the injured soft tissues, resisting inflammation and relieving pain and the like. The preparation prepared by the invention enriches the active components of the medicines highly, has convenient carrying and use and accurate use dose and overcomes the defects of low content of effective components, difficult quality control, poor stability and the like.

The invention provides a preparation method of a low-modulus high-elastic beta-type titanium alloy dental arch wire. The method conducts annealing treatment, low temperature rotary forging, multi-modedrawing, corresponding solution treatment and surface brightening treatment on titanium alloy bars to prepare the low-modulus high-elastic beta-type titanium alloy dental arch wire. The method fullyutilizes the characteristics of low strength and good elongation of a beta-type titanium alloy at a certain temperature, the deformation is increased and the number of pass is reduced by low temperature rotary forging, a clad layer is prepared on the surface of the dental arch wire, the color of the titanium alloy dental arch wire can be changed, and the use requirements of people can be met; anti-corrosion treatment is conducted on the titanium alloy dental arch wire, and the service life of the dental arch wire clad layer is prolonged. The preparation method of the titanium alloy dental archwire has the advantages of simple process, high manufacturing efficiency and good product effect, the prepared beta-type titanium alloy dental arch wire has good biocompatibility, low elastic modulusand high elasticity, and stable and mild corrective force and long-term moderate displacement can be obtained.

The invention discloses safe and environment-friendly tea seed washing powder and a preparation method thereof. The preparation method comprises the following steps: step 1, taking raw materials, namely, weighing the following raw materials in parts by mass: 60-70 parts of camellia seed, 15-30 parts of Chinese honey locust, 5-10 parts of cacumen biotae, 0.5-3 parts of cortex albiziae, 0.5-3 parts of pomegranate bark and 0.5-2.5 parts of natural borneol; step 2, crushing, namely, respectively crushing the weighed raw materials by using a crusher so as to obtain raw material powder; step 3, mixing, namely, mixing the raw material powder, and uniformly stirring the raw material powder; step 4, sterilizing, namely, sterilizing through ultraviolet ray or microwave, and further sealing and packaging so as to obtain the safe and environment-friendly tea seed washing powder. The safe and environment-friendly tea seed washing powder is high in active substance content, good in detergency, good in sterilizing effect, non-toxic, non-irritating, anti-anaphylaxis, low in foam and water-saving, so that the powder can be used as a safe and environment-friendly washing product which is ideal for washing food, utensils, tableware, vegetables and fruits in daily life of people.

The invention discloses a bacteriostatic traditional Chinese medicinal prescription for a sanitary towel and a preparation method thereof. The bacteriostatic traditional Chinese medicinal prescriptionis prepared from the following medicinal materials in parts by weight: 60 to 120 parts of radix scutellariae, 30 to 90 parts of rhizoma coptidis, 120 to 180 parts of folium artemisiae argyi, 60 to 120 parts of flos lonicerae, 90 to 150 parts of cortex meliae, 170 to 230 parts of radix sophorae flavescentis, 170 to 230 parts of pericarpium zanthoxyli, 170 to 230 parts of fructus cnidii, 270 to 330parts of rhizoma smilacis glabrae, 120 to 180 parts of cortex dictamni and 170 to 230 parts of fructus kochiae. The preparation method comprises the following steps of weighing and taking the pericarpium zanthoxyli and the folium artemisiae argyi according to the parts by weight, distilling for 2 to 4 hours with water vapor, extracting volatile oil, decocting dregs and the rest medicinal materials by adding water with an amount of 6 to 10 times respectively, merging filtrate, filtering, concentrating until an extract whose density is measured to be 0.8 to 1.3 at 60 DEG C, and adding into thesanitary towel according to a conventional process. The bacteriostatic traditional Chinese medicinal prescription has obvious antibacterial effects on more than ten bacteria of including candida albicans and escherichia coli, and the like, has prevention, treatment and health protection functions to common gynecological diseases, and meanwhile, has no toxicity, no irritancy and no anaphylaxis to ahuman body, and is safe and comfortable to use.

The present invention discloses a kind of Chinese medicine composition for treating facial skin diseases. The Chinese medicine composition is prepared with bittersweet herb 15-35 weight portions, bletilla tuber 15-30 weight portions, notoginseng 12-30 weight portions, oriental stephania root 12-25 weight portions, tuckahoe 8-18 weight portions, kudzu vine root 5-12 weight portions, berry-bearing campion root 12-25 weight portions, serissa herb 10-20 weight portions, and dandelion 12-25 weight portions, and through crushing, grinding, 80-120 mesh sieving and other steps. The Chinese medicine composition has obvious healing effect on chloasma, acne, fleck, skin pigmentation and other facial skin diseases, and no any untoward reaction.

The invention discloses a fructus forsythiae volatile oil medical hydrocolloid dressing that is formed by sticking two layers of materials, one layer of which is base mounting material, and the other layer is composed of the following components in terms of percentage by mass: 0.1%-10% of fructus forsythiae volatile oil, 1%-20% of water-soluble high polymer material, 10%-60% of rubber substrate, 0.01%-0.2% of antioxidant, 1%-9.7% of foaming agent and 0.1%-87.89% of water, wherein the total content of the above components is 100%. The method for preparing the dressing comprises the following steps of: first, adding a proper amount of water in water-soluble high polymer material so as to over-swelling the water-soluble high polymer material, then adding fructus forsythiae volatile oil to form I-phase solution, then adding antioxidant in the rubber substrate and evenly stirring to form II-phase solution, hybrid mixing I-phase solution and II-phase solution, adding foaming agent and rest water, fully stirring, transitively coating on the base mounting material, refrigerating and then unfreezing. The fructus forsythiae volatile oil medical hydrocolloid dressing has exact treatment effect, is safe and reliable, and has obviously economic benefits.

The invention discloses a ring-arc-shaped sleeping bag and manufacturing and using methods thereof. A sleeping bag body is composed of an upper portion, a lower portion, a sleeping hood, a hood strip, a hood strip elastic cord, a front opening, a lifting lug, a double-end front fly zipper, a safe fastening loop, a flank vertical lining, a flank partitioning vertical lining, a lower portion vertical lining, an upper portion ring-arc-shaped vertical lining, a flank, a sleeping hood partitioning vertical lining and a sleeping hood flank vertical lining, wherein the sleeping hood is arranged at one end of the sleeping bag body and connected with the sleeping bag body into a whole, the upper portion ring-arc-shaped vertical lining, the lower portion vertical lining, the flank vertical lining, the flank partitioning vertical lining, the sleeping hood partitioning vertical lining and the sleeping hood flank vertical lining are arranged between the shell fabric and lining fabric of the sleeping bag body to form a supporting frame of the sleeping bag body, and the stitching position of the shell fabric intersects with that of the lining fabric, so that wind resistance is improved and filler is evenly distributed and does not separate. The sleeping bag is reasonable in design, novel in structure, attractive in appearance, light, practical, convenient to package and carry, easy to manufacture, low in cost, economical, comfortable, high in warm keeping capacity, high in air permeability, free of skin irritation, long in service life and extremely convenient to use and carry.

The invention relates to the field of Chinese medicaments, and discloses a Chinese medicinal composition for treating gynecological inflammation, which comprises the following raw material medicinal materials in part by weight: 15 to 25 parts of paris polyphylla var. chinensis, 15 to 25 parts of java brucea fruit, 25 to 35 parts of mountain dragon, 25 to 35 parts of swamp mahogany leaf, 20 to 30 parts of common cnidium fruit, 20 to 30 parts of stemona parviflora, 25 to 35 parts of climbing groundsel herb, 30 to 40 parts of glochidion eriocarpum champ and 25 to 35 parts of mentha haplocalyx. The invention also provides a preparation method and cleansing solution of the Chinese medicinal composition. The Chinese medicinal composition of the invention has the effects of dampness elimination, antibiosis, disinsection, itching relieving and peculiar smell elimination, has the good effect of treating the gynecological inflammation, and has the extensive application prospect.

The invention relates to the field of traditional Chinese medicine, in particular to a traditional Chinese medicine composition for treating gynecologic inflammation, and a preparation method thereof. The traditional Chinese medicine composition for treating gynecologic inflammation is prepared from the following raw materials in parts by weight: 20-50 parts of rabdosia rubescens, 10-30 parts of kuh-seng, 10-30 parts of phellodendron bark, 10-20 parts of stemona root, 10-20 parts of cnidium fruit and 10-20 parts of mint. The invention also provides a preparation method of the traditional Chinese medicine composition and a clinical preparation of the traditional Chinese medicine composition. The traditional Chinese medicine composition provided by the invention has the efficacies on clearing away heat and toxic material, eliminating dampness, relieving itching, resisting bacteria, destroying parasites and eliminating peculiar smell, has obvious curative effect on treating gynecologic inflammation, has no recurrence, no toxic side effect, no irritation and no allergy to skin, comfort and safety, and can be widely applied to clinical treatment of gynecologic inflammation such as colpitis, cervicitis and the like.

The invention relates to a temperature-sensitive gel type nano-silver foam aerosol for women, which comprises a gel system and a propellant dimethyl ether evenly mixed in the gel system, wherein the gel system contains nano-silver colloidal particles, a temperature-sensitive high molecular polymer and a diluting agent. The volume of the propellant the dimethyl ether is 8 to 15 percent of that of the gel system. An ejected matter is foam during the use of the temperature-sensitive gel type nano-silver foam aerosol, the deep administration can be performed, and a medicine can quickly swell and comprehensively contacts a focus after reaching the focus, and is dispersed evenly and permeated fully in a cavity; and at the same time, the nano-silver foam aerosol forms semisolid shaped gel in special physiological environment of a drug application position, has strong adhesiveness, is convenient for vagina mucosa to absorb to play effect, and effectively improves the compliance of patients and the bioavailability of nano-silver. The temperature-sensitive gel type nano-silver foam aerosol for the women has the advantages of convenient use, exact therapeutic effect, and no drug dependence.

The invention provides a high-intensity low-modulus metastable beta titanium alloy tooth arch wire which is characterized by comprising the following nominal chemical components in percentage by mass: 11 percent of Mo, 3 percent of Nb, 5 percent of Zr, 4 percent of Sn and the balance of titanium and unavoidable impurities. The tooth arch wire provided by the invention has good biocompatibility, high tensile strength, low elastic modulus, a wide elastic range and excellent resilience; moreover, the orthodontic force of the high-intensity low-modulus metastable beta titanium alloy tooth arch wire is lower than that of a stainless steel wire, but is higher than that of a nickel-titanium alloy wire, the elastic modulus of the high-intensity low-modulus metastable beta titanium alloy tooth arch wire is only one fourth to one third of that of the stainless steel wire, and the high-intensity low-modulus metastable beta titanium alloy tooth arch wire has a wider elastic range and a wider orthodontic displacement range than the stainless steel wire. Utilization of the tooth arch wire provided by the invention can obtain the stable and mild orthodontic force and durable and moderate displacement and can realize larger displacement of teeth without replacing an orthopedic wire or only by replacing the orthopedic wire a little.

The invention relates to a high static pressure and enzyme hydrolysis combined method for preparing hypoallergenic ginkgo protein powder. Fresh ginkgoes are shelled, crushed, extracted with a Tris-HCl solution and subjected to fractional precipitation with saturated (NH4)2SO4, ginkgo protein is prepared, a ginkgo protein solution with certain concentration is prepared from the ginkgo protein with distilled water and sealed in a double-layer polyethylene plastic bag, the double-layer polyethylene plastic bag is put in high-pressure equipment and treated under high static pressure for 20-30 min after vacuum pumping seal is performed, a ginkgo protein sample treated under the high pressure is taken and subjected to heat treatment at the temperature of 90 DEG C for 5 min, the pH value of the solution is adjusted until the pH is most suitable for hydrolysis of protease, protease is added in a certain proportion to be hydrolyzed for 1-2 h, the hydrolysis temperature is the best hydrolysis temperature for protease, enzyme denaturalixation is performed at the temperature of 95 DEG C for 10 min after hydrolysis ends, and the hypoallergenic ginkgo protein powder is obtained after the hydrolyzed sample is freeze-dried. The ginkgo protein powder prepared with the technology is hypoallergenic or doesn't cause allergy and has good solubility, emulsibility and antioxidant activity and high added value, and the method can be a new technology for producing the hypoallergenic ginkgo protein powder in the industry.