51results about How to "Fast extraction time" patented technology

The invention discloses a multiple-magnetron type large-capacity microwave-assisted extraction machine and a microwave-assisted extraction method thereof, belonging to the field of biological raw material extraction equipment and an extraction method. The multiple-magnetron type large-capacity microwave-assisted extraction machine comprises a rack, a transmission device, a microwave tank, a microwave device, an air-entrapping device, a rotor device, a discharging device and a control device, wherein a plurality of magnetron installing holes uniformly and equidistantly distributed are formed in the wall of the microwave tank; the microwave device comprises a plurality of high-frequency magnetrons which are uniformly and equidistantly arranged on the wall of the microwave tank, and the high-frequency magnetrons are connected with an external power source; the air-entrapping device comprises a plurality of compressed air inlets formed in the wall of the microwave tank, a compressed air input pipeline and a plurality of electromagnetic valves; the rotor device comprises a rotating shaft and a plurality of stirring wings which are fixed on the rotating shaft and form certain crossing angles with the rotating shaft. The multiple-magnetron type large-capacity microwave-assisted extraction machine has the advantages that feed liquid in the microwave tank continuously runs and interchanges, an extractive is uniformly subjected to the action of an electromagnetic field to be heated, the extraction rate is increased, and the extraction time is shortened.

The invention provides a method for extracting cornel iridoid glycoside by virtue of ultrasonic-microwave synergetic extraction. The method comprises the following steps: (1) preparing cornus officinalis coarse powder; (2) adding the cornus officinalis coarse powder into a 80% methanol solution in a material-liquid ratio of (1:5)-(1:25), sealing, weighing and determining the weight, connecting a condensing device, and extracting for 3-15 minutes with microwave power of 300-700W and ultrasonic powder of 120-600W to obtain an extract; (3) carrying out suction filtration on the extract to obtain filtrate, keeping the constant volume, filtering, concentrating, drying and purifying to obtain the cornel iridoid glycoside. A method for determining the cornel iridoid glycoside comprises the following steps: a, preparing a mixed reference substance solution; b, preparing a test substance solution; c, determining the contents of morroniside, loganin, sweroside and cornel iridoid glycoside in the mixed reference substance and the test substance; d, respectively calculating the contents of the four glycosides according to the result of liquid chromatographic analysis.

The invention provides processing technology of fermented jujube wine, relating to the processing technology for making wine with jujubes as the raw materials. The jujube wine can furthest retain the nutrients and flavors of jujubes and has strong aroma, friendly taste and bright color. The technology comprises the procedures of selecting, classifying, washing, air-drying and kernel removing and is characterized in that the air-drying temperature is 30-50 DEG C; and then processing is carried out according to the following steps: 1) soaking; 2) crushing; 3) enzymolysis; 4) adjusting; 5) sterilizing; 6) inoculating and fermenting; 7) separating and wine pouring; and 8) clearing. The processing technology has the following beneficial effects that the highest processing temperature is controlled not to exceed 55 DEG C in the whole technology flow, thus effectively inhibiting the Maillard reaction; the problems that the nutrients and flavors are easy to damage in the (red) jujube wine production process, the product has bitter taste and precipitates can be generated in long-time storage are solved; many problems in industrial production are better solved; and the produced (red) jujube wine has strong aroma and rich taste and is clear and transparent.

The invention provides a classifier training method and a computer readable storage medium, and the classifier training method comprises the steps: carrying out the decomposition of a time sequence ofan electroencephalogram signal containing crymodynia information, so as to obtain decomposed sub-band components; determining a ratio of the energy value of any sub-band component to the sum of the energy values of all the sub-band components, a fine composite multi-scale dispersion entropy of any sub-band component, a fine composite multi-scale fuzzy entropy and an autoregression model coefficient; determining a feature set according to the ratio of the energy value of any sub-band component to the sum of the energy values of all the sub-band components, the fine composite multi-scale dispersion entropy, the fine composite multi-scale fuzzy entropy and the autoregression model coefficient; and training the classifier according to the feature set to obtain the target classifier. The classification effect of the classifier obtained through training according to the feature variables on the crymodynia information is better, and the reliability of the diagnosis result of the neurologicaldiseases is improved.

The invention discloses a key evidence extraction method for a text prediction result, and relates to a key evidence extraction method for a text prediction result. The objective of the invention is to solve the problem that in the prior art, when key evidence capable of explaining a prediction result is extracted from a text, evidence searching is dependent on manual annotation. The method comprises the following steps: 1, obtaining a sentence level vector; 2, taking an average value of the sentence level vectors as an initial value of an external storage unit; 3, obtaining an updated external storage unit corresponding to the first sentence level vector; obtaining the document level vector until a final external storage unit corresponding to the nth sentence level vector is obtained; 4,outputting the probability of each category of the document; 5, obtaining a trained hard extraction network model; inputting the to-be-classified documents into the trained hard extraction network model to obtain the probability that the to-be-classified documents are divided into various categories and a sentence set that the documents are divided into the categories. The method is applied to thefield of evidence extraction of text prediction results.

The invention discloses an ultrasonic extraction tank with a stirring device and belongs to the technical field of traditional Chinese medicine pharmaceutical equipment. The ultrasonic extraction tank is characterized by comprising a tank body, a heating jacket, an ultrasonic generation mechanism and the stirring device. A tank cover is arranged on the upper portion of the tank body, a feed inlet and a secondary steam discharge hole are arranged in the tank cover, and a slagging door is arranged at the bottom of the tank body. The heating jacket is arranged in the middle of the tank body. The ultrasonic generation mechanism is arranged on the outer wall of the tank body. The stirring device comprises a motor, a reducer, a reducer bearing seat, a stirring shaft and a spiral plate, wherein the motor is in transmission fit with the reducer, the motor and the reducer are arranged on the reducer bearing seat, the reducer bearing seat is fixed on the tank cover, the upper end of the stirring shaft passes the tank cover to extend out of the tank body to be connected with the output shaft of the reducer while the lower end of the same is supported at the bottom inside the tank body, and the spiral plate is arranged in the middle of the stirring shaft. By the arrangement, the ultrasonic extraction tank has the advantages that speed of materials is increased, extraction time is shortened, energy consumption is reduced, the effect that heat penetrates the materials is improved, dissolution rate of the effective components in the materials and utilization rate of raw materials are increased, and yield is increased.

The supersonically reinforced process of extracting yolk phospholipid with yolk powder containing protein and fat as material includes supersonically reinforced extraction of yolk powder in 80-99 % concentration alcohol solution of 3-20 times weight of yolk powder at 20-70 deg.c for 1-3 times 0.1-1 hr each, with the supersonic wave frequency being 20-150 KHz; centrifuging and filtering the extracted liquid; and decompression concentrating the supernatant and vacuum drying to obtain yolk phospholipid. Compared with available processes, the present invention has the advantages of simple operation, short extraction period, low power consumption, low extraction cost, high effective component transferring rate, etc.

The invention discloses a method for brewing fermentation-type mulberry liquor. The method comprises the following steps of selecting raw materials, cleaning, extruding, soaking, pulping, protecting color, carrying out enzymolysis, sterilizing, inoculating, carrying out main fermentation, accelerating aging, filtering, classifying and the like. Due to adoption of the method disclosed by the invention, the brewing time of mulberry liquor is shortened, the labor and the production cost are saved and the production efficiency and enterprises benefits are improved.

The invention discloses an ultrasonic-microwave synergic extraction method of chondroitin sulfate, which comprises the following steps: cleaning processing leftovers of tilapia, baking, pulverizing, degreasing, and passing through a 60-mesh screen to obtain fishbone powder; extracting in an ultrasonic-microwave extraction instrument; after the extraction finishes, leaching, filtering, cooling, regulating the pH value, and adding 2% of compound protease to carry out enzymolysis for 2 hours; and after the enzymolysis finishes, inactivating the protease, decolorizing, centrifugalizing, purifyingand concentrating the supernatant with an ultrafiltration apparatus, and precipitating with ethanol to obtain an insoluble substance which is the chondroitin sulfate. The method fully utilizes the cavitation action of ultrasonic vibrations and the high-energy action of microwaves, shortens the extraction time, and obviously enhances the extraction efficiency, thereby greatly lowering the production cost. The invention is simple to operate, and has the advantages of short extraction period, high extraction rate and high product purity.

The present invention provides a concentrated Liuwei dihuang pill preparation method. According to the method, the existing preparation method is improved so as to effectively improve component transfer rate and paste yield, save energy consumption and reduce active ingredient loss.

The invention discloses an extraction technology of folium artemisiae argyi volatile oil. The technology comprises the steps that 1, folium artemisiae argyi is cleaned thoroughly, impurities are removed, and low-temperature drying and smashing are performed to obtain folium artemisiae argyi powder; 2, warm water is added into the folium artemisiae argyi powder till the folium artemisiae argyi powder is soaked to be expanded, and freezing treatment is performed at the temperature of subzero 6 DEG C to 0 DEG C for 2-3 h; microwave defrosting is performed on the frozen folium artemisiae argyi powder; 3, water with the weight 10-15 times that of the folium artemisiae argyi powder is added into the defrosted folium artemisiae argyi powder for soaking for 5-10 h, then, steam distillation is performed on the folium artemisiae argyi powder and the soaking solution, distillation is performed for 5-8 h, and a distillate is collected; standing, cooling and layering are performed on the distillate, and then an upper oil layer is obtained and is the folium artemisiae argyi volatile oil. According to the extraction technology of the folium artemisiae argyi volatile oil, freezing-microwave defrosting pretreatment and a steam distillation steam method are combined, volatile oil in folium artemisiae argyi is extracted, the cost is low, operation is simple, the extraction time is short, and the volatile oil extraction rate is high.

The invention belongs to the comprehensive utilization field of agricultural product byproducts, and in particular relates to a method for continuously preparing millet bran coat crude oil and alcohol soluble protein. The method comprises the following steps: (1) millet bran coat screening and impurity-removing cleaning; (2) preparing of an extraction solution; (3) counter-current extraction; (4) solid-liquid separated millet bran coat crude oil and alcohol soluble protein mixture; (5) secondary extraction; (6) secondarily separated alcohol-soluble protein crude extract; (7) rotary-evaporation to obtain the millet bran coat crude oil. By use of the method of extracting twice, the grease and the alcohol-soluble protein in the millet bran coat are successively extracted, so the comprehensive utilization efficiency of the millet bran coat is improved; and meanwhile, the counter-current extraction method is use for extracting the bran coat, the extraction time is greatly shortened in comparison with that of the traditional solvent lixiviation method, the operation is simple, and the extraction rate is high.

The invention belongs to the field of extraction of plant active ingredients and relates to an extraction purifying method for removing plant cell walls with cellulase and breaking cells accordingly, in particular to an improved method for extracting berberine. The improved method includes crushing golden cypress, washing and steaming, subjecting the crushed golden cypress to reaction with enzyme, digesting by lime milk, depositing and crystallizing, drying and the like. The improved method for extracting berberine is high in digestion rate, short in extraction period, and low in solvent usage. With degradation of cell walls by cellulase, the cell walls are broken in different degrees, permeability of cells is improved, digestion rate of active components in the cells is increased, extraction time is shortened, and further, usage of the solvent is lowered, and production efficiency is improved. Besides, the method is energy-saving, environment-friendly and safe. Enzyme reaction is mild in conditions, requirements for engineering equipment are not high, and operation is convenient; materials required by the enzyme reaction causes no pressure to the environment, energy consumption and pollution to the environment are reduced.

Provided are a manufacturing method of a rotor of a motor integrated pump capable of more reliably restraining the influence of operating fluid of the pump on the magnet and a motor integrated pump with the rotor is provided. The method includes: a magnet support process, supporting a magnet (11) inserted in a die (30) through a first, second and third pins (40,41,42); and a support component removing process, drawing out the first, second and third pins (40,41,42) from a first cavity (34) of the die (30) through a first, second and third implementation components (46,47,48) in the process of filling resin in the die (30). Therefore, even if in the region wherein, magnet is supported by the first, second and third pins (40,41,42), the shaping resin can be used to overcast.

The invention belongs to the field of natural products extraction, and concretely relates to a method for extracting high-purity crambe abyssinica seed oil and a cream containing the crambe abyssinica seed oil. According to the invention, the crambe abyssinica seed oil can be extracted by using a microwave radiation method, the method comprises the following steps: 1) accurately weighing a certain amount of crambe abyssinica seeds and placing the crambe abyssinica seeds in a container, adding a certain amount of an extraction solvent, extracting the crambe abyssinica seeds under certain microwave power to obtain a mixture; 2) filtering the mixture, performing rotating separation on a filtrate on a rotary evaporator, removing the extraction solvent to obtain a residual substance crambe abyssinica seed crude oil; 3) placing the crude oil in a fixed container, adding sodium hydroxide for boiling the material, washing the material by warm water until the material presents neutrality; and 4) performing adsorption decoloring on the crambe abyssinica seed crude oil obtained in the step 3) and filtering the crambe abyssinica seed crude oil, and obtaining the filtrate which is the crambe abyssinica seed oil. The extraction technology is simple, and purity of the obtained crambe abyssinica seed oil is high. The invention also discloses an application of the crambe abyssinica seed oil in the cream.

The invention relates to a method for extracting effective component of traditional Chinese medicine, with dynamic overflow continuous reverse-flow method, wherein said method uses several extractors, while each extractor works independently and they use active overflow method, to transfer liquid continuously. Compared with traditional method, the invention improves extracting speed, reduce solvent consumption, reduce following energy consumption and improve efficiency. The invention can reduce extracting temperature, etc. And the invention comprise several pots, heater, condenser, tubes, pump and value which control the active overflow between pots, and the meter element controlling the balance of whole device.

The invention relates to an integrated circuit impedance network model extraction method and system. The method comprises the following steps: acquiring a multilayer integrated circuit layout; performing mesh generation on the multilayer integrated circuit layout to obtain a non-structural triangular mesh for segmenting the multilayer integrated circuit layout; listing a finite element equation set for calculating the potential field of the integrated circuit according to the information of the grid nodes on each triangular grid to obtain a finite element sparse matrix; enabling the finite element sparse matrix to be equivalent to a sparse matrix of an admittance network taking a finite element grid as association; repeatedly performing star triangle transformation on the sparse matrix ofthe admittance network to eliminate internal nodes of a non-port of the sparse matrix to obtain an admittance network of the port; and determining an impedance network model according to the admittance network of the port, and further extracting the impedance network model. The method improves the extraction speed of the impedance network model of the multi-layer super-large-scale integrated circuit.

The invention belongs to the technical field of traditional Chinese medicine preparation, and in particular relates to a preparation method and application of a rhizome traditional Chinese medicinal material decocting-free preparation. The preparation method comprises the following steps: performing steam explosion wall-breaking treatment on a rhizome traditional Chinese medicinal material; then extracting active ingredients by adopting a manner of combination of ultrasonic assisted alcohol extraction and ultrahigh pressure extraction; then performing microfiltration treatment by adopting a ceramic membrane; and finally, performing concentration, drying and nano pulverization to obtain the rhizome traditional Chinese medicinal material decocting-free preparation. The preparation can be used for preparing a traditional Chinese medicine compound preparation containing the rhizome traditional Chinese medicinal material or a rhizome traditional Chinese medicinal material extract. By adopting the preparation method, the problems of low raw material utilization ratio, incomplete extraction of active ingredients and low extraction efficiency of a conventional method for extracting traditional Chinese medicinal materials are solved, the whole process flow is simple to control and is green and environment-friendly, and all process steps achieve a synergistic effect, so that the preparation method provided by the invention is higher in extraction efficiency, the active ingredients are effectively protected, and the utilization degree of the rhizome traditional Chinese medicinal material is improved.

The invention relates to nutrient soil with broad-spectrum insecticidal property and good water retention capacity. The nutrient soil is characterized by being prepared by the following steps: firstly extracting and separating sophocarpidine by virtue of an ultrasonic extraction-microwave extraction combined technique and trichloromethane extraction; and then carrying out microwave heating on attapulgite, vermiculite and zeolite so as to increase effective apertures of the attapulgite, the vermiculite and the zeolite, and introducing the sophocarpidine into the apertures of the attapulgite, the vermiculite and the zeolite; and finally carrying out cross-linking polymerization on acrylamide, as a monomer, and the attapulgite, the vermiculite and the zeolite under the catalysis of potassium persulfate, so as to obtain spatial reticular inorganic mineral-polymer particles, namely the nutrient soil with the broad-spectrum insecticidal property and the good water retention capacity. The nutrient soil disclosed by the invention has the broad-spectrum insecticidal property, is capable of improving a soil structure, improving soil organic matters and adjusting a soil microenvironment and is applicable to plantation of flowers and nursery stocks.

The invention relates to the technical field of traditional Chinese medicinal pharmacy, and especially relates to a compound thrombus relieving soft capsule and a preparation technology thereof. The content of the soft capsule is composed of effective dry extract powder, soybean oil and beeswax; the effective dry extract powder comprises extracts obtained through extracting the following medicinal materials, by weight, 600-800 parts of panax notoginseng, 200-300 parts of Radix Astragali, 100-200 parts of Salvia miltiorrhiza and 200-300 parts of Radix Scrophulariae; a weight ratio of the effective dry extract powder to the soybean oil is 3-5:7-5, and the proportion of the beeswax is 4-6% of the proportion of the soybean oil; and the shell of the capsule is prepared from, by weight, 0.95-1.05 parts of gelatin, 0.3-0.5 parts of glycerin and 0.8-1.2 parts of water. The compound thrombus relieving soft capsule has the advantages of accurate content, good stability, good dissolution, fast absorption, small side effects, portability, small dosage, high bioavailability, rapid curative effect and good effect.

The invention discloses a method for preparing an ultrasonic extracted Chinese medicinal preparation for treating qi deficiency, which belongs to the technical field of traditional Chinese medicaments. The method comprises the following steps of: crushing ginseng into coarse powder, putting the coarse powder into an ultrasonic extractor, adding 30 percent ethanol in an amount which is 3 times weight of the coarse powder, starting ultrasonic equipment at a temperature of between 20 and 25 DEG C, performing ultrasonic treatment for 40 minutes, filtering, reclaiming the ethanol, concentrating the filtrate to original amount, adding the ethanol in an amount which is 3 times weight of the concentrate, stirring, standing, taking the supernate, reclaiming the ethanol, and concentrating the supernate to 100ml; and adding sodium benzoate, stirring the solution uniformly, regulating the ethanol content to be 20 to 30 percent, standing at a temperature of between 5 and 10 DEG C, taking the supernate, filtering the supernate, adding water till 1,000ml, standing for 7 days at a temperature of between 5 and 10 DEG C, taking the supernate, filtering the supernate, and packing the supernate to obtain the preparation. By adopting the advanced ultrasonic extraction technology, the effective ingredients based on ginsenoside in the preparation are obviously improved, the quality and the curative effect of the medicament are improved, the clinical effect of the preparation is improved, the yield and the purity of the product are improved, the cost is saved, and the method is suitable for large-scale production operation.

The invention belongs to the technical field of gene amplification detection, and particularly relates to a drug-related genotyping kit and a typing method for a thiopurine drug. Use of nano-silica ingene amplification detection is initiatively found, and gene amplification reaction efficiency and reaction specificity can be remarkably improved, so that the nano-silica is applied to drug-relatedgenotyping detection of the thiopurine drug to solve the problems that drug-related genotyping for the thiopurine drug is poor in specificity and low in detection speed, and a large number of samplescannot be rapidly detected in a high-specificity manner in the prior art.

The invention relates to a tremella fuciformis cookie. By adding tremella fuciformis polysaccharide and tremella fuciformis powder in a raw material formula and matching the tremella fuciformis polysaccharide and the tremella fuciformis powder reasonably, the synergy of the tremella fuciformis polysaccharide and the tremella fuciformis powder has the effects of improving body immunity, resisting tumors, resisting anabrosis, resisting blood coagulation, preventing cerebral thrombosis, lowering lipid, lowering blood glucose, promoting the body protein synthesis, slimming and the like, so that the finally obtained tremella fuciformis cookie is obvious in health care effect, is suitable for mid-aged population with relatively high blood glucose and blood lipid, has good taste and is rich in nutrition.

The invention discloses biomass charcoal particles loaded with matrine-chitosan sustained-release microspheres and a preparation method thereof. The preparation method is characterized in that adopting ultrasonic extraction and microwave extraction combined technology and chloroform extraction to extract and separate matrine; performing glutaraldehyde and chitosan in-situ crosslinking on the surface of matrine to obtain matrine coated chitosan sustained-release microspheres; loading the chitosan sustained-release microspheres on the surfaces of biomass charcoal particles through action between maleic anhydride and the chitosan sustained-release microspheres and hydroxyl on the surfaces of the biomass charcoal particles to obtain the biomass charcoal particles loaded with the matrine-chitosan sustained-release microspheres. The biomass charcoal particles loaded with the matrine-chitosan sustained-release microspheres have broad-spectrum insecticidal property, can improve soil structure, increase soil organic matter and adjust soil microenvironment, and can serve as a high-quality energy source and a soil improver to be applied in the aspects of water source purification and soil improvement.

The invention provides a microwave extraction technology for steroid saponins in caltrops, which comprises the following steps: weighing caltrop sample and placing the caltrop sample into a microwave extraction bottle, adding alcohol in the microwave extraction bottle, placing the microwave extraction bottle in a MAS-II type normal-pressure microwave-assisted synthesis / extraction reaction instrument for extraction, performing decompression filtration to an obtained extract, and then evaporating a solvent on a rotary evaporator to obtain a crude extract of the steroid saponins of the caltrops; adopting a HCl solution to hydrolyze the steroid saponins extracted by microwave, obtaining sapogenins corresponding to the steroid saponins of the caltrops after the hydrolysis, dissolving the saponins with chloroform, and then filtering the saponins for GC-MS detection. The technology adopts a microwave-assisted hot reflux method to extract the steroid saponins of the caltrops, combines a gas chromatography mass spectrometry to detect steroidal sapogenins of the caltrops, ensures that the pretreatment is simple and convenient and the operation is simple by optimizing extraction conditions, has high extraction efficiency, and is environment-friendly and nontoxic.

The invention belongs to the technical field of gene amplification detection, and particularly relates to a kit and a method for drug-related gene typing detection of warfarin. Use of nano-silica in gene amplification detection is initiatively found, and gene amplification reaction efficiency and reaction specificity can be remarkably improved, so that the nano-silica is applied to drug-related genotyping detection of the warfarin to solve the problems that drug-related genotyping for the warfarin is poor in specificity and low in detection speed, and a large number of samples cannot be rapidly detected in a high-specificity manner in the prior art.

The invention belongs to the technical field of gene amplification detection, and particularly relates to application of nano silicon dioxide in gene amplification detection, a nucleic acid amplification reagent utilizing nano silicon dioxide and a detection kit and a detection method of individualized administration related gene subtyping. It is found for the first time that reaction efficiency and reaction specificity of gene amplification can be improved remarkably by using nano silicon dioxide in gene amplification detection, and the problem that gene amplification is low in detection rateand specificity in the prior art and the problem that quick and highly specific detection of samples in a large amount cannot be realized due to low specificity and slow detection speed of gene typing are solved.

The invention belongs to the technical field of collagen extraction, and particularly relates to an extraction method and application of fish skin collagen. The invention provides a method for rapidly extracting non-denatured fish skin collagen, which solves the problem of waste of freshwater fish processing byproducts and overcomes the defects of low extraction rate and long extraction time of the traditional collagen extraction method. The technical method disclosed by the invention is simple and feasible, short in extraction time and high in extraction efficiency, most importantly, the integrity of collagen macromolecular structures is ensured, and the extraction time is greatly shortened compared with other methods. According to the extraction method, the collagen is subjected to ultrasonic treatment before being extracted by a traditional acid-enzyme combination method, so that the natural activity of extracted fish skin collagen molecules is ensured, and the fish skin collagen obtained by measurement keeps the natural structure of type I collagen and is non-denatured type I collagen. The method is simple to operate, lower in energy consumption, high in extraction efficiency and easy to amplify and apply to production.

The invention belongs to the technical field of preparation of feed additives and particularly relates to a preparation method and application of a compound Chinese herbal medicine preparation for sheep. The preparation method comprises the steps as follows: 100-150 g of high-quality radix astragali, 60-120 g of medicated leaven, 60-120 g of malt, 60-120 g of haws, 60-120 g of dried orange peel, 60-120 g of leaves of eucommia ulmoides, 100-150 g of officinal magnolia bark, 100-200 g of houttuynia cordata, 40-80 g of garlic, 40-80 g of ginger and 60-120 g of tarragon are thoroughly cleaned anddried, the obtained materials are crushed into 60-mesh powder, ultrasonic extraction is performed twice in the ratios of medicines to water (by weight) being 1:30 and 1:20 respectively at 60 DEG C atultrasonic power of 1250 W for 60 min, extraction liquids are mixed and concentrated into extract of 4.25-5.55 (25 DEG C), the extract is mixed with calcium lactate in the ratio being 1:5, and drying,crushing, sieving and uniform mixing are performed to prepare the preparation.

The invention relates to an extraction and separation method of lamb abomasum chymosin. According to the method, lamb abomasum tissues are dispersed, cells are destroyed and mixing is enhanced throughtreatment methods of tearing granularity, soaking and the like of the abomasum before extraction, and the extraction rate of the chymosin is remarkably improved in combination with an ultrasonic-assisted extraction method, so that the extraction time is greatly shortened, the preparation cost of the chymosin is reduced, and a technical support is provided for standardized production of lamb stomach extracts of related enterprises. Meanwhile, the solubility of the chymosin in the lamb stomach is systematically researched, an optimal solvent and an optimal extraction pH value are selected, anda reliable and feasible method is provided for enlarged production of chymosin extraction. The lamb abomasum chymosin obtained by the method is high in purity and strong in biological activity; the extraction method is simple and feasible; the whole extraction process is operated in a low-temperature environment, so that the activity of the lamb abomasum chymosin is better retained; and the obtained chymosin can be applied to cheese production.