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1264results about How to "Improve sterilization effect" patented technology

Method for sterilizing medical appliance

A medical instrument sterilization method is disclosed, which characterizes in following process: pending medical instrument for sterilization treatment being placed in a closed container, then being vacuum pumped, the vacuum pressure of the container being controlled between 1 Pa to 1500 Pa, air and / or oxygen and / or inert gases are charged to closed container and the vacuum pressure being between 1 Pa to 1500 Pa, microwave is fed, the favorable power of which should make the gas charged into the container to generate ionization, the microwave be cut after the sterilization, then air being charged to release vacuum to finish the whole process.
Owner:吉林省中立实业有限公司

Robotic arrangement for use in medical fields

A robotic arrangement for use in medical fields has a robot arm having, in particular, a plurality of hinges, an instrument holder provided on the robot arm in order to receive a medical instrument, and supply lines which can be connected to the instrument. An adapter element is used for connecting the supply lines to the instrument.
Owner:DEUTSCHES ZENTRUM FUER LUFT & RAUMFAHRT EV

Kieselguhr-based porous ceramics and method for loading Ag doped with nano TiO2 on same

The invention relates to a kieselguhr-based porous ceramics, a preparation method thereof and a method for loading Ag doped with nano TiO2 on the same, belonging to the technical field of a kieselguhr inorganic material. The kieselguhr-based porous ceramics is made from kieselguhr, a sintering auxiliary agent, a dispersing agent, a binder and water in the weight ratio of 60-92:8-40:0.01-2:0:001-1:100-450. The kieselguhr-based porous ceramics has functions of absorption and filtration, and can absorb granules in fluid when the fluid passes through the lieselguhr-based porous ceramics. Ag doped with nano TiO2 is loaded on the kieselguhr-based porous ceramics to generate kieselguhr-based porous ceramics loading the Ag doped with TiO2. The laden anatase-type nano TiO2 has large specific surface area. The effects of filtration, photochemical catalysis and sterilization of the kieselguhr-based porous ceramics loading the Ag doped with nano TiO2 are greatly increased.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Method for culturing pleurotus eryngii

InactiveCN102187785ASolve the chemical fertilizerSolve problems such as pesticide residuesHorticultureFertilizer mixturesPesticide residueMycelial cord
The invention discloses a method for culturing pleurotus eryngii. The method comprises the following steps of: selecting saw powder of alfalfa growing in organic soil, wild nuts in mountain and wild trees in mountain, mixing, fermenting, sterilizing, and inoculating the sterilized fermentation product to pleurotus eryngii hypha to culture to obtain mature pleurotus eryngii. By adopting the alfalfa growing in the organic soil, the problem that the alfalfa growing in common soil contains chemical fertilizer, pesticide residue and the like is solved, and harm of chemicals to a human body is solved; meanwhile, because the alfalfa is selected as one of the culture medium materials for culturing the pleurotus eryngii, the germination rate of the pleurotus eryngii can be increased by using the alfalfa to culture the pleurotus eryngii; and because the alfalfa is used as one of the culture medium materials, the growth speed of hypha can be increased, so that the production efficiency of the pleurotus eryngii is increased, and the economic benefit of the pleurotus eryngii is increased. The method has the advantages of achieving the best sterilization effect, saving the sterilization time, being simple and easy in material selection, saving a large amount of labor, reducing the production cost and increasing the economic benefit.
Owner:LUOYANG JIAJIALE AGRI PROD DEV

Sterilizing bath lotion for furry pets

The invention provides sterilizing bath lotion for furry pets, which comprises surfactant, humectant, hair care agent, chelating agent, bactericide, thickening agent and essence, wherein the bactericide is one of stable liquid chlorine dioxide, stable solid chlorine dioxide or sodium chlorite. The sterilizing bath lotion of the invention overcomes the defects of the existing product or the prior art, and really realizes synchronous completion of three effects of removing dirt, caring hair and quickly sterilizing. The sterilizing bath lotion has the advantages of mild property, no any stimulation to the fur of animals and the skin of people, good dirt removing and sterilizing effects, low foam, easy cleaning, no residue, safety and environment friendliness, and meanwhile plays a role in caring the fur of the animals so that the fur of the washed pet does not knot; and the sterilizing bath lotion is glossy, flexible and easy to card, and is quite suitable for the daily care of the furry pets.
Owner:BEIJING OKEANOS TECH

Method of preparing highly effective nano antibiotic functional ceramic and application thereof

The invention discloses a making method and application of high-effective nanometer antibiotic ceramic, which is characterized by the following: preparing titanium acid sol as the predecessor of TiO2 optical catalyst; making biscuit firing body and glost firing body of ceramic or coarse-grain earthen ware; adopting sol-gel method to load the doped titanium acid sol on the surface of ceramic or coarse-grain earthen ware; sintering; obtaining the product with diameter between 10mm and 20mm and loading quantity at 0. 21mg / cm2.
Owner:JIANGSU GAOCHUN CERAMICS

Ceramic filter and method for purifying water

A ceramic filter includes a separation layer made of titania having an average pore size of 0.08 to 1 mum and a thickness of 5 to 20 mum. The ceramic filter has both good fouling characteristic and high bacteria removal capability and used suitably for water purification or the like.
Owner:NGK INSULATORS LTD

Steam sterilizing method

The invention discloses a steam sterilizing method, which comprises a sterilizing treatment procedure and a sterilizing treatment post cooling procedure. Before the sterilizing procedure, the interior of a sterilizing chamber is preheated by adopting the hot air provided by a first hot air draught fan; and meanwhile, a second hot air draught fan connected with a hot air inlet of the sterilizing chamber through a storage steam heat exchanger is opened to preheat the storage steam heat exchanger. After the preheating treatment for the sterilizing chamber and the storage steam heat exchanger reaches a set temperature, the material is continuously preheated by the first hot air draught fan; and after the preheating treatment is finished, the material to be sterilized is sterilized by high-temperature steam or over-heated steam. The sterilizing method is simple and efficient, and avoids the problem that the high-temperature steam caused by the sterilizing method without the preheating treatment is condensed in the sterilizing chamber to damp the material so as to influence the quality.
Owner:LANZHOU NONGZHIPIN ECOLOGICAL TECH CO LTD

Pure Chinese medicine disinfectant and process for preparing same

The invention discloses a pure Chinese medicine disinfectant and a process for preparing the same, which aim at providing a disinfectant with low cost, simple and convenient use and fine sterilization effect, and solve the technical problem that the existing disinfectant has strong irritation, large toxic effect and side effect and hidden using safety hazards. Selected raw medicinal materials and weight proportions thereof respectively include 20 parts of chinaberry flower, 10 parts of wrinkled gianthyssop herb, 15 parts of Chinese atractylode rhizome, 15 parts of Chinese mugwort leaf, 30 parts of tangerine peel and 30 parts of lightyellow sophora root. The process for preparing the disinfectant is selected from processes of 1, water boiling, 2, distillation, 3, reflux and 4, impregnation. The pure Chinese medicine disinfectant has strong bactericidal effect on gram-negative bacteria and gram-positive bacteria, and has the advantages of no irritation, no toxic effect or side effect, no residues, no pollution and capability of being widely applied to sterilization in environment, livestock and poultry houses and body surfaces of livestock and poultry.
Owner:王建国

Fresh-keeping method for pickle cured meat product

InactiveCN101156616AWon't taste badThere will be no serious problems such as the destruction of nutrientsMeat/fish preservationCyclic processVacuum pack
The invention discloses a fresh keeping method for salted and preserved meat products. The fresh keeping method is realized by putting the vacuum-packed salted and preserved meat products in liquid pressure medium in the super-high pressure container under 20-60 DEG C for 1-3 times of cyclic processes of pressurizing, pressure keeping, and pressure discharging, the freshness date of the high-pressure processed salted and preserved meat products can be prolonged to one year in the normal temperature. The fresh keeping method for the salted and preserved meat products of the invention can effectively prolong the freshness date of the salted and preserved meat products, can be used in various salted and preserved meat products, such as sausage, preserved ham, preserved duck, and preserved beef.
Owner:GUANGDONG FOOD IND INST +2

Bacteria removing solution and preparation method thereof

The invention discloses a bacteria removing solution and a preparation method thereof. The bacteria removing solution comprises the following components in percent by weight: 1.0-2.0% of carboxymethyl chitosan, 2.0- 4.0% of algal polysaccharides, 6.0-8.0% of cecropin, 1.5-3.5% of N-acetyl murein glycan hydrolytic enzyme, and 82.5-89.5% of water. When the bacteria removing solution is applied to staphylococcus aureus, escherichia coli and candida albicans for 2 min, the average kill ratio is higher than 99.9%, and while the bacteria removing solution is applied to staphylococcus aureus, escherichia coli and candida albicans for 5 min, the average kill ratio is 100%. The bacteria removing solution has the advantages of low use concentration and good sterilizing effect.
Owner:QINGDAO HIFUN MARINE BIOLOGICAL TECH

Method for preparation of hydroxyethyl starch

The invention provides a new technology for preparing raw materials of hydroxyethyl starch, which uses 50PPM to 200PPM sodium hypochlorite for decolorization and sterilization and substitutes the traditional technology using active carbon for decolorization, thus improving the production efficiency and the quality of the hydroxyethyl starch. The new technology overcomes such defects of the traditional technology using active carbon for decolorization as viscous material liquid, poor fluidity, long filtration time of material liquid, easy growth of bacteria in the material liquid, easy leakage of the active carbon from a filter and the like, thus not only greatly shortening the filtration time, but also guaranteeing the produced raw materials of hydroxyethyl starch to have stable batch and reliable quality and to meet the national standard.
Owner:赤峰迪生药业有限责任公司

Method for manufacturing beverage filled in container

It is intended to provide a process for producing a packaged drink whereby filling can be performed at room temperature without resorting to using a chemical or sterile water, the favorable taste and flavor of the content can be maintained while relieving the thermal degradation thereof, it becomes unnecessary to employ a heat-resistant container or to thermally sterilize or cool after sealing, and thus both of the equipment cost and the running cost can be largely reduced. After thermally sterilizing the content to give a definite sterilization value, it is quickly cooled to room temperature and then stored in a storage tank that has been preliminarily sterilized under such conditions as being equal to or exceeding the thermal sterilization conditions for the contents. While maintaining the storage tank under positive pressure with the use of a sterile gas, the content is fed into a filling machine that has been preliminarily sterilized under such conditions as being equal to or exceeding the thermal sterilization conditions for the contents. Thus, the liquid-feeding system ranging from the storage tank to the filling machine is made a closed liquid-feeding pathway free from the invasion of air from the outside. The drink is filled into a container having been sterilized with hot water in an environment-controlled space isolated from the outside wherein the surroundings have been thermally sterilized and washed with hot water at 65 DEG C to 100 DEG C.
Owner:TOYO SEIKAN KAISHA LTD

Anti-cold Chinese medicine sterilizing fumet and fumigation stove

InactiveCN1554243ARelieve respiratory secretionsEliminate bad breathBiocideAnimal repellantsIndoor airMedicine
The present invention relates to Chinese medicine product for sterilizing and preventing diseases. The fumigation stove consists of fumigation chamber with electrothermal roastig board in the lower part, filter with upper fume outlet holes and material feeding opening and four claw support inside the outer casing. The casing is vase-shaped or in other decorative form. The fumet has moxa as main component and contains also eight kinds of Chinese medicinal materials, including basket kern, agastache, calamus, etc. The present invention is used in purifying and aromatizing indoor air, especially in disease spreading period. The medicated air has obvious effect of killing bacteria and inhibiting virus.
Owner:张留印

Hericium erinaceus cultivation method

The invention discloses a hericium erinaceus cultivation method comprising the steps of culture material preparation, fungi bag preparation, sterilization, inoculation, greenhouse construction, mycelium culturing, fruiting management, harvesting, and post management. The cultivation process provided by the invention is simple, and the cost is low. The cultivated hericium erinaceus has the advantages of fast mycelium germination, robust growth, uniform and neat primordium, ordered fruiting body growth condition, robust fruiting body growth, and high biological efficiency.
Owner:吴中区胥口精益生物医药研究所

Apple juice and preparation method thereof

The invention relates to an apple juice and a preparation method thereof. The preparation method comprises the following steps: preprocessing; juicing apples; blending raw apple juice; homogenizing the apple juice, and carrying out vacuum degasification; filling the apple juice, and sealing; and carrying out extra-high-pressure sterilization on the apple juice. The apple juice is the product processed by the preparation method. By carrying out extra-high-pressure sterilization at normal temperature, the invention can effectively reduce enzymatic change and browning caused by thermal reaction in the processing course of the apple juice, solve the problems of mouthfeel and flavor degradation and nutrient loss of the product caused by high-temperature heating sterilization during the traditional thermal sterilization processing, and favorably keep the natural flavor and nutrient of the product.
Owner:CHINESE ACAD OF AGRI MECHANIZATION SCI

Bifidobacterial fruit-vegetable beverage and its preparing process

A Bifidobacterial fruit-vegetable beverage is prepared from fresh fruit juice, fresh vegetable juice, cultured Bifidobacterium, lactobacillus and thermophilic streptococcus, stabilizer and flavouring through ultrahigh-temp. instantaneous sterilizing, and fermenting. Its advantages are high nutritive and health-care value, and long quality guarantee period.
Owner:张红梅

Air purifier

The invention relates an air cleaner, solving the problem that the current air cleaners isn't disclosed the date of removing pneumococcus klebsiella and staphylococcus epidermidis and the date of effective degerming life, and the cleaning effect of current air cleaners is not good. The invention adopts the technical project that the silver particles below 100 nanometer are fixed on the surface of carrier to solve the problem.
Owner:雷景华

Superhigh pressure fresh-keeping process for cooked seasoned shelled prawn

The invention relates to the hyperpressure refreshing way the prawn kernel, which has something to do with the low-temperature sterilizing technology in food processing. The main procedures of the invention go as follows: put the vacuum-packaged cooked prawn kernel into the hyperpressure container; pressurize the liquid in the container to about 400-800MPa; keep the pressure for 5-30 min and take out of the prawn kernel. The hyperpressure processing can extend the shelf life of prawn kernel to 150d when it's stored at 4deg.C, while the color and texture of the prawn kernel are all acceptable to consumers and can meet the needs of market and the demands of export.
Owner:JIANGNAN UNIV

Microwave processing method for chrysanthemum tea

The invention relates to a microwave processing method for chrysanthemum tea. The method comprises the following steps of: firstly, picking out satisfactory fresh chrysanthemums, and spreading the chrysanthemums at room temperature to air; performing microwave green removing, quickly reducing the temperature after green removing, and repeatedly kneading the chrysanthemums; and drying, screening, inspecting and packing the chrysanthemums to obtain the finished product of chrysanthemum tea. Compared with the traditional common green removing method through heating, distilling and drying, the method can effectively reserve important drugs and nutrition constituents such as volatile oil, flavone, chlorogenic acid, stevia, choline, amino acids, vitamins, abundant mineral elements and the like contained in the chrysanthemums, and the disinfection effect is improved.
Owner:程雪翔

Seal free paper-aluminum composite material sterile pillow packaging machine

InactiveCN101016090AAvoid recontaminationProtects against light and oxygen intrusionFlexible coversWrappersAluminum compositesSurface plate
The invention relates to a non-seal aluminum composite germ-free pillow packing machine, comprising a paper drum, a paper receiver, a paper releaser, an air inlet, a hydroperoxide groove, a hydroperoxide blade, a guiding roller, an atomization nozzle, a paper feeder, an ultraviolet lamp, a germ-free room, a shaping corrector, a counting pot, a shaping wheel, a longitudinal sealing device, a marking device, a paper drawer, a pouring tube, a transverse seal, a cutter, a discharge sliding groove, an air discharger, a body, an operation panel, an appliance control box, and a germ-free hot air treating device. The invention eliminates former longitudinal sealing device to realize longitudinal seal without sealing bar to save cost, while the packed volume can be stepless adjusted, with better disinfection effect and low cost.
Owner:新疆大容民生投资有限合伙企业

Glaze capable of releasing negative oxygen ions, tile and preparation method thereof

InactiveCN107935372AEliminate toxic gasesGood sterilization effectHigh energyCeramic tiles
The invention discloses a glaze capable of releasing negative oxygen ions, ceramic tiles and a preparation method thereof. The glaze is prepared by adding high-energy powder into the raw materials for glaze making, and the high-energy powder includes the following components by weight of oxides: SiO2 70-90 parts, Fe2O30-0.5 parts, Al2O31-5 parts, CaO 0.01-0.05 parts, MgO 0-1 parts, K2O 0-1 parts, Na2O 0-2 parts, TiO20.1-0.8 parts, CeO20.1-parts 0.5 parts, ThO2 2‑4 parts. When preparing ceramic tiles, the raw material used in the surface glaze layer of ceramic tiles is glaze that can release negative oxygen ions. That is, the glaze that can release negative oxygen ions is sprayed on the surface of the printed pattern by glazing, and finally fired in a kiln to obtain ceramic tiles that can release negative oxygen ions. The ceramic tile releases negative oxygen ions for a long time, can effectively eliminate toxic gases such as formaldehyde, and has a good sterilization effect. It is a healthy ceramic tile with air purification function.
Owner:湖北宝加利陶瓷有限公司

Method for preparing dendritic nano-silver by liquid phase synthesis

The invention relates to a method for preparing dendritic nano-silver by liquid-phase synthesis. The method is characterized by comprising the following steps: a silver-ammonia solution with silver-ammonia concentration of 0.1 mol / L to 0.5mol / L is prepared, then a crystal-formation guider and a nometer protective agent are added, stirring is carried out till the mixed solution is evenly mixed, and reaction solution is obtained; an ascorbic acid solution with concentration of 0.4mol / L to 0.8mol / L is dripped into the reaction solution to carry out reduction reaction, the solution after reaction is directly filtered by decompression, the solid phase after filtering is baked in an oven to remove water, so as to obtain the dendritic nano-silver. The method has simple preparation process, the reagent used is nontoxic and of environmental protection, the diameter of the dendritic nano-silver obtained is less than 30nm, the length of the dentrites is less than 100nm, the cluster length of the dentrites is less than 200nm, and the granularity of the dendritic nano-silver is even and the structure is stable. The dendritic nano-silver obtained by the method which is composite with polymers can improve conductivity, conductive circuit can be formed only with relatively little silver powder, filling quantity of silver powder can be reduced and cost of conductive agents can be saved.
Owner:NORTHEASTERN UNIV

Formed konjak mask and preparation method thereof

The invention discloses a formed konjak mask and a preparation method thereof. The mask is prepared by utilizing konjak powder as a raw material, purifying, preparing glue, and then mixing the glue with carboxymethyl cellulose and xanthan gum, adding glycerin and sodium carbonate to prepare an emulsion, curing and forming, dealkalizing and sterilizing, and finally immersing into a skin moisturizer. The formed konjak mask prepared by the preparation method disclosed by the invention is strong in toughness, good in ductility, good in adhesion and hydrophilia and capable of being closely combined with skin to provide sufficient moisture for the skin and prevent the moisture in the stratum corneum of skin from evaporating so as to enable the additional nutritional skin moisturizer to be easily absorbed, maintain the face moistness and avoid the accelerated aging the face skin; in addition, the konjak powder is a pure plant source substance, thereby being free of stimulation, safe and free of toxic or side effect to the skin. The formed konjak mask is little in pollution in the production process and liable to degrade, thereby being environmentally-friendly.
Owner:HUBEI YIZHI KONJAC BIOTECH

Closestool with clean water injector and photo catalytic bactericidal lamps

The closestool disclosed herein has an upper lid hinged to one end of the closestool thereof, a power supply unit equipped on the closestool; a clean water injector equipped underneath the power supply unit comprising a first and second cleaning nozzles, and a control unit attached to the closestool to stretch nozzles for water injection. The kernel of the present invention lies in that one or more bactericidal lamps having a sterilization effect with its photocatalytic film is provided to radiate conterminated part of the user's body thereby serving a sterilization effect during cleansing with water injection.
Owner:PENG PERRY

Edible grain, bean and potato coarse cereal rice composition and preparing method thereof

The invention discloses an edible grain, bean and potato coarse cereal rice composition and a preparing method thereof and belongs to the technical field of grain deep processing. According to the edible grain, bean and potato coarse cereal rice composition, broken rice is used as a main raw material, after ultrasonic cleaning, microwave curing, drying and sterilizing of the broken rice, the broken rice, grain powder with a special flavor, enzymatic hydrolysate and other functional raw materials are pelletized, and then grain arrangement and processing through a microwave drying device are carried out, so that the edible grain, bean and potato coarse cereal rice composition is obtained. The edible grain, bean and potato coarse cereal rice composition has a tissue structure, granularity, hardness and viscosity which are similar to those of rice, can be boiled and cooked with rice, has the taste and chewiness, which are similar to those of cooked rice, is unique in flavor, soft in fragrance, high in appetite attractiveness, easy to digest and comprehensive in nutrition, and can improve the immunity and disease resistance of the human bodies and improve the gastrointestinal function. The guarantee period is three times of that of commercial rice. More importantly, a shortcut is developed for the efficient value-added comprehensive utilization of the broken rice, the road for the deep processing of the broken rice is broadened, and the economical value of the broken rice is increased. Better social benefits and economic benefits are realized and a sustainable development road for the deep processing of agricultural byproducts and the effective solving of Three-Rural problems is explored.
Owner:敖汉旗北方粮仓农产品批发市场有限公司

Air purification unit applicable to remove fine particles in the air in the home environment

The invention relates to an air purification unit applicable to remove fine particles in the air in the home environment and belongs to the field of electrostatic dust removal. The device comprises an air inducing unit, an air purification unit and an air channel. The air purification unit comprises a positive high-voltage pulse charge region, a negative high-voltage pulse charge region, a static coagulation region under an alternating electric field, a dust particle collection region, a plasma disinfection region and a negative ion region which are arranged successively. A narrow-pulse discharging mode and a negative direct-current high-pressure discharging mode are used, a working voltage below 30KV and a working current below 10mA are used, and the collection efficiency of more than 90% of particles with diameters below 10 microns is achieved in the home environment; the problems of over-large 'wind resistance' and 'secondary pollution' of prior home air conditioners are solved, fine particles in the air can be removed in the home space size range, the air can be disinfected, and the problem of ultraviolet light leakage harms is solved.
Owner:上海安平静电科技有限公司

Special biological disinfectant for toothbrush and preparation method thereof

The invention discloses a special biological disinfectant for toothbrush and a preparation method thereof. The disinfectant is characterized by comprising the following components by weight: 1.0-2.0% of carboxymethyl chitosan, 2.0-4.0% of seaweed polysaccharide, 6.0-8.0% of bactericidal peptide, 1.5-3.5% of mucopeptide-N-acetylmuramoylhydrolase, a proper amount of essence and the balance of purified water. The special biological disinfectant for toothbrush provided by the invention has the advantages of wide bactericidal spectrum, good stability, no toxicity, no stimulation, no corrosion, no irritability, no color, no odor and no side effect, can kill parasitic pathogenic bacteria on the toothbrush, and causes no corrosion to the toothbrush.
Owner:QINGDAO HIFUN MARINE BIOLOGICAL TECH

Traditional Chinese medicine sanitizer and preparation method thereof

The invention belongs to the technical field of sanitizers, and particularly relates to a traditional Chinese medicine sanitizer and a preparation method thereof. The sanitizer is prepared from the following Chinese herbal medicine raw materials including, by weight, 10-30 parts of wormwood, 1-5 parts of garlic, 10-30 parts of honeysuckles, 5-21 parts of myrcia, 10-30 parts of cordate houttuynia and 2-15 parts of astragalus membranaceus. The garlic is table vinegar extractive liquid of garlic, and the weight ratio of the garlic to the table vinegar is 1:(3-10); and the sanitizer prepared from the Chinese herbal medicine raw materials comprises, by weight, 10-30% of chlorogenic acid. The prepared sanitizer has an obvious bactericidal effect on common germs such as staphylococcus aureus, escherichia coli, staphylococcus albus and pseudomonas aeruginosa in air; and the sanitizer has the advantages of being quick in effect initiating, long in duration time, low in cost, simple in preparation technique and the like.
Owner:李湘钰

Method for refining polyglutamic acid in biologic fermentation broth by using ultrafiltration and nanofiltration techniques

ActiveCN103665371AOvercome the difficult problem of removing bacteriaReduce usageUltrafiltrationPaper document
The invention discloses a method for refining polyglutamic acid in biologic fermentation broth by using ultrafiltration and nanofiltration techniques, which belongs to the technique field of biologic synthesis and purification. Aiming at the distribution characteristics of target extracts and molecular weights of impurities in the fermentation broth, the method is used for effectively separating gamma-PGA of different molecular weights with the combination of modern film separation techniques, and the method mainly comprises the following steps: reducing the viscosity of kieselguhr, filtering and sterilizing, heating to be combined with ultrafiltration decontamination proteins and macromolecule active organisms, removing metal ions and impurities with positive charges by using a cation exchange resin, decoloring, subsequently removing micromolecule and ionic impurities in a nanofiltration mode, performing ultrafiltration and extraction at different stages so as to obtain refined gamma-PGA of different molecular weights. The extraction yield is kept greater than 92%, which is higher than the highest yield of 90.6% reported in documents, high market pertinence is achieved, production can be performed according to demands, and the economic benefits are professionally improved as gamma-PGA of different molecular weights are refined with the combination of ultrafiltration and nanofiltration techniques.
Owner:天津北洋百川生物技术有限公司
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