142results about How to "Reduce extraction time" patented technology

The invention discloses a method for extracting dihydromyricetin from vine tea, including the following steps: (1) vine tea dry leaves are weighed, subject to microwave radiation treatment by a microwave oven and then smashed; (2) the particles are added into a microwave reverse flow extractor, water is added, microwave extraction and filtering are carried out, thus obtaining filtration A and residue A; (3) the residue A is processed according to the method in the step (2), thus obtaining filtration B and residue B; (4) residue A and residue B are merged and added into the microwave reverse flow extractor, ethanol is added, microwave extraction is carried out for 30-60min and then filtering is carried out, thus obtaining filtration C; (5) the filtrations A, B and C are merged, and then concentration, crystallization and drying are carried out. The invention has simple technology and convenient operation, extraction ratio of dihydromyricetin can reach 47.3%, purity can reach 85%, the required organic solvent is less, operating safety is good, no high temperature furnace is required for heating, energy consumption is reduced, and production cost is saved.

The invention provides silkworm pupa oil, an extracting method and an application thereof. The silkworm pupa oil consists of the following components with the weight percentage of 0.2 percent of hexadecanoic acid, 1.0 percent of palmitoleic acid, 27.2 percent of oleic acid, 10.7 percent of linoleic acid, 54.6 percent of alpha-linolenic acid and 6.3 percent of other unsaturated acids. The extracting method of the silkworm pupa oil extracts unsaturated fatty acid in the silkworm pupas by a method which combines a microwave extracting technology and urea clathration. The application of the silkworm pupa oil is that the silkworm pupa oil is applied to effectively reducing the blood sugar and the level of diabetic and is especially used for preventing and curing the diabetes. The silkworm pupa oil has the advantages of shortening extracting time, reducing energy consumption, reducing solvent dosage, improving the content of necessary fatty acid and especially the content of the alpha-linolenic acid in the silkworm pupa which benefit human body, reducing the oxidative damage to the unsaturated fatty acid, protecting a double-health structure, economic and simple extracting method, being grasped easily, being convenient for realizing industrialized mass production, the more outstanding pharmacological action of the silkworm pupa oil represented in the aspect of reducing blood sugar, etc.

The invention provides a method for detecting polycyclic aromatic hydrocarbon in a plastic product. The method comprises the following steps: (1) extraction: a plastic product sample is crushed, weighed, wrapped in filter paper, placed in a sample bottle, added with 20mL of a main extractant and an auxiliary extractant which are acetone to dichloromethane and the volume ratio of which is 1:1, and ultrasonically extracted for 60-80min; (2) purification: in a chromatographic column, florisil is adopted to absorb the polycyclic aromatic hydrocarbon in extraction liquid; then the extraction liquid is eluted and collected, and then the obtained eluent is condensed and diluted to the volume; and (3) sample determination: the sample is determined by a gas chromatography, and polycyclic aromatic hydrocarbon components are subject to qualitative analysis and quantitative analysis. In the method, the acetone and the dichloromethane are taken as solvents in the preliminary treatment process of the sample to extract the polycyclic aromatic hydrocarbon from the sample, which greatly shortens the extraction time and improves the extraction efficiency; and the florisil is adopted to purify the extraction liquid, which reduces the interference in the determination of the polycyclic aromatic hydrocarbon in the sample by the gas chromatography with a low detection limit, and the method can meet the requirements for rapidly detecting PAHs in plastic products.

The invention relates to a method for extracting pupa oil from silkworm pupas by using ultrasonic wave. The method is formed by silkworm pupa pretreatment, ultrasonic extraction, pupa oil preparation and refining. Compared with solvent extraction method, since the ultrasonic extraction is adopted, the extraction duration is shortened to 30 minutes from 2 hours, the extract rate is improved to 96.3 percent from 81.1 percent and the product yield is improved to 28.9 percent from 24.3 percent. According to the detection of the pupa oil prepared through the method of the invention, all indexes satisfy the pupa oil quality standard reported in literature and the GB15306-2004 rapeseed oil quality standard, and the pupa oil can be used as both edible oil and healthcare food ingredients. The invention has the advantages of simple technological steps, high extraction rate, short extraction duration, low production cost and the like, and can be used for pupa oil preparation from silkworm pupas.

The present invention provides a method for puffing Chiense medicinal material of normal temp. and high pressure, and it is used for pretreatment process of traditional Chinese medicinal materials, and its method includes the following steps: cutting Chinese medicinal materials, pressurizing at normal temp. and 1-20 MP and instantaneously releasing pressure so as to obtain the invented puffed material suitable for preparing preparation. Said invention uses the normal temp. compressed gas as medium which can be air, nitrogen gas or CO2 gas. Said invention can shorten the extraction time of the Chinese medicinal material, and can raise its production efficiency.

The invention discloses a method for preparing geniposide in eucommia leaf. The method comprises the following steps of crushing eucommia leaf, carrying out cellulase-assistant middle temperature-water extraction, carrying out routine filtration, carrying out ultrafilter membrane impurity-removal, carrying out nanofiltration condensation, carrying out macroporous resin-based separation purification, carrying out condensation and carrying out drying to obtain geniposide powder. The method utilizes cellulase-assistant middle temperature-water extraction of geniposide in eucommia leaf, has an extraction rate of 95%, a low water extraction temperature and short extraction time, utilizes an ultrafilter membrane to remove impurities and separate other side products in the extract, has simple membrane processes and realizes long-term membrane flux stabilization, easy membrane cleaning, a long service life and industrialization. Through the nanofiltration membrane, the extract subjected to impurity removal is concentrate d so that follow-up technical load is reduced and a resin service life is prolonged. Through the method, a nanofiltrated liquid has a COD value <=100 and can be reused in production and basically, waste water is not produced. Through the macroporous adsorption resin, geniposide can be effectively purified. The powder produced by the method has geniposide purity greater than 80% and an extraction rate more than 1.2%.

The invention provides a detection method of content of vitamin D in dried blood spot. The method comprises the following steps: infiltrating blood spot by the use of ultrapure water; extracting an object to be detected by the use of acetonitrile and precipitating impurity protein, carrying out PTAD derivation for signal amplification, completing pretreatment of a sample; and completing simultaneous detection of two 25-hydroxy vitamin D by an LC-ESI-MS/MS method for 3 min. According to the pretreatment method, the system is micro, time of a hygroplasm detection method is short, and use amount of an organic solvent is greatly minimized. Thus, the method of the invention is environment-friendly and energy-saving, can be used for large-scale clinic promotion, and has high commercial value.

The invention relates to a process for extracting trigonelline. The process comprises the following steps of: crushing raw materials, soaking the powder into amino alcohol solution or aqueous ethanol, performing reflux extraction on the solution with heating, concentrating the extract to be small volume, extracting the concentrate by using petroleum ether, removing the extract, filling the raffinate into an aluminum oxide column for chromatography, eluting the column by using isopropyl alcohol or ethanol as eluent, concentrating the eluted solution and drying the concentrate. The product produced by the process has low impurity content and high effective ingredient yield, and the operation is simple and convenient to master.

The invention discloses an extraction and separation method for lycorine in Lycoris radiata. Lycoris radiata bulbs are taken as a raw material, and the lycorine is extracted by adopting complex enzyme pretreatment, dilute hydrochloric acid leaching, ultrasonic-assisted extraction, and chloroform extraction methods. An adopted novel process effectively combines an ultrasonic extraction method with a composite enzymatic hydrolysis method, which shortens extraction time, and also greatly improves the extraction rate of the lycorine; and the extraction rate reaches 0.97 percent, and is higher than that of the prior extraction process. The method has the advantages of mild reaction conditions, simple needed equipment, concise flow, and reasonable and feasible process.

The invention discloses a method for preparing chondroitin sulfate from sturgeon cartilage. The method comprises the following steps: (1) pretreating cartilage; (2) performing ultrasonic enzymolysis treatment: hydrolyzing the sturgeon cartilage by using trypsin, accelerating the enzymolysis process under the action of ultrasonic waves, finishing enzymolysis, deactivating enzyme, cooling and centrifuging to obtain supernate containing sturgeon chondroitin; (3) hydrolyzing and precipitating synchronously, continuously hydrolyzing the supernate in the step (2) with ethanol and NaOH solution and centrifuging to obtain white precipitate; and (4) purifying, drying and redissolving the precipitate to remove insoluble impurities, and drying to obtain a white spongy chondroitin sulfate product. The process is simple to operate and is new. Based on the steps of performing ultrasonic auxiliary enzymolysis, hydrolyzing and precipitating synchronously and purifying, the hydrolysis time can be greatly shortened, the purity and the yield of the products are increased and the production cost is reduced.

The invention relates to a method for preparing paeoniflorin, which is simple in operation and low in equipment investment. The method comprises the following process steps: a raw material containing paeoniflorin is placed into microwave extraction equipment and added with water for microwave extraction; filtrate is collected and filtered, so that the filtrate passes through a macroporous absorbent resin column for sample loading, water is used to elute impurities first, 20 to 80 percent ethanol is used for elution, ethanol eluate is collected, and the ethanol is decompressed, reclaimed and concentrated; the concentrated liquid is added into a chromatography column filled with active carbon, and then eluted by water; and eluate is collected, concentrated by a reverse osmosis membrane and dried to obtain the paeoniflorin. The method has the advantages of lowering production cost, improving product quality and facilitating industrialized operation.

The invention discloses a video processing method, a device, equipment and a medium. Performing feature matching on the target video to determine a target frame in the target video that matches the feature information; determining highlight video segments in the target video according to the target frame and presetting highlight video interception rules, the highlight video segments including thetarget frame, the highlight video interception rules corresponding to the feature information. The highlight video segment is extracted from the target video. The method, device,equipment and medium provided by the present application can solve the technical problems existing in the prior art of watching historical game live videos, which waste viewers' viewing time and cause viewers to have a lowprobability of obtaining wonderful video clips. The technical effect of saving viewing time is realized.

The invention discloses a human hair quick lysate for trace drug detection and application of the lysate. The human hair quick lysate for trace drug detection comprises the raw material components of50-100nM of alkaline protease AH-101, 0.5-2% of mercaptoacetic acid, 25-75mM of glycine, 30-60mM of a trihydroxymethyl aminomethane hydrochloride buffer solution, 40-80mM of a sodium chloride-sodium hydroxide buffer solution and 0.5-1.5% of polyethylene glycol octylphenol ether (Triton X-100), wherein nM is nanomoles per liter, mM is millimoles per liter, and % is volume percent. Through the humanhair quick lysate, trace drug small molecules can be quickly extracted from a human hair sample, the drug release rate is high, the influence of impurities is small, and the lysate is free of toxinsand pollution; the lysate can be used under ordinary experimental conditions, keratin can be sufficiently cracked, cracking speed is high, entire cracking time is only 90 seconds, and the drug molecules are effectively released; and compared with a cracking method in the prior art, operation time is greatly shortened, and the truthfulness and reliability of an experiment result is guaranteed.

The invention provides an analysis measuring method for brominated flame-retardant in a plastic component of a deserted household electrical appliance, relating to the technology for fast identifying and analyzing the brominated flame-retardant in the plastic component of the deserted household electrical appliance. A collected sample of the plastic component of the deserted household electrical appliance is processed by coarse and fine grinding and screen separation and then is dissolved in the dissolvent and uniformly dispersed on the surface of a colloidal silica particle; an automatic Soxhelt's extractor is used for extracting the brominated flame-retardant in the sample; and finally, a high efficiency liquid chromatography (matched with a diode array detector) is used for qualitative/quantitative analysis. The method has the advantages of simple operation of extraction and purification, low consumption of dissolvent, high speed of analysis, accurate qualitative and quantitative determination, low limit of detection and wide range of concentration of detection, solves the technical problem that the solubility is limited during the detection of the brominated flame-retardant by the high efficiency liquid chromatography, and is suitable for the safe identification and the accurate detection of two kinds of brominated flame-retardants, namely polybrominated diphenyl ethers (PBDEs) and polybrominated biphenyls (PBBs) in the plastic components of various deserted household electrical appliances, such as a television, an electric refrigerator, a washing machine, a computer, a water drinking machine, etc.

The invention relates to a method for extracting dragon fruit flower polysaccharide, belonging to the field of polysaccharide extraction processes. The method mainly comprises the steps: combining an ultrasonic extraction process and a hot water extraction process, wherein the ultrasonic power is 160-180 W, the ratio of the material to water is (1:35)-(1:45); and after the ultrasonic extraction of 40-50 min, performing 90-DEG C water bath for 1-2 h, centrifugally extracting supernate, and performing ethanol precipitation to obtain the dragon fruit flower polysaccharide. According to the invention, an extraction method which is rapid, simple, convenient and safe, is low in cost, and does not damage components is established; compared with a single hot water extraction method, the method has the advantages that the extraction time is shortened by above 35.0 percent, the extraction yield is increased by 29.1 percent, and the polysaccharide extraction rate is 7.21 percent. The dragon fruit flower polysaccharide extracted by adopting the method is remarkable in biological activity; the total antioxidant capacity of a 1 mg/ml dragon fruit flower polysaccharide solution reaches 5.21 U/ml, and the scavenging activity on hydroxyl free radicals is 2188.78 U/ml.

The invention relates to a preparation method for traditional Chinese medicine preparation, in particular to an extraction method for rhodiola rosea injection with the assistance of microwave cell disruption. Large rhodiola rosea injection has the effect of promoting blood circulation to remove blood stasis. The preparation method comprises the following steps: the medicine of rhodiola rosea is moistened in a medicine moistening machine until the medicine is moistened fully and the water is exhausted; the medicine is subjected to microwave cell disruption in a tunnel microwave drier with the microwave power being 20kw and the conveyer belt speed being 2m/min; after cell disruption, the medicine is placed in an extraction jar for low-temperature and decompression extraction at the temperature of 75-80 DEG C; and a salidroside extracting solution is obtained. By adopting the technology of extraction with the assistance of microwave cell disruption, the dried medicine is moistened by the medicine moistening machine, so that the dehydrated cells are led to absorb water, expand and absorb microwave energy to the maximum, which is beneficial for cell disruption. The effective ingredients of the medicine are rapidly released at low temperature and negative pressure, so that the extraction time is greatly shortened, the energy consumption is saved and the impurities are obviously decreased.

The invention particularly relates to a method for extracting hovenia dulcis thunb total flavones by cooperation of a surfactant and a microwave-ultrasonic extraction process. The method comprises the following steps: (1) grinding hovenia dulcis thunb, and performing Soxhlet extraction by petroleum ether to remove fat so as to obtain fully defatted ground hovenia dulcis thunb; (2) uniformly mixing the ground hovenia dulcis thunb, distilled water and the surfactant to obtain a mixed solution; (3) performing microwave-ultrasonic extraction on the mixed solution at the microwave power of 200-600 W and the ultrasonic power of 100-500 W for 5-20 minutes; (4) after the extraction, performing alcohol precipitation on the extracted filtrate to remove alcohol supernatant, and concentrating and drying to obtain a hovenia dulcis thunb total flavones extract. Due to the adoption of the method for extracting hovenia dulcis thunb total flavones, the extraction time is greatly shortened, the extraction efficiency is improved, the cost is reduced, and the energy consumption is low; meanwhile, a distilled water solution in which a small amount of the surfactant is dissolved is taken as an extraction solution, so that the problem of toxic organic solvent residues is solved.

The invention discloses a method for extracting essential oil from cypress leaves. The method comprises the following steps of (1) collecting materials; (2) preprocessing the materials; (3), extracting; (4) condensing and recovering; (5) drying and removing moisture; and (6) bottling to store. By adopting the method, a common domestic micro-wave oven is taken as a micro-wave radiation source; a negative pressure extraction technology is added; the fresh leaves are taken as raw materials; complicated raw material treatment is not needed; any solvent is not added; and the micro-wave is absorbed by the moisture of the material and the material is heated and extracted, so as to achieve the negative pressure distillation and extraction effects of the micro-wave. Compared with the traditional steam distillation method, the method has the advantages that consumption of energy is greatly reduced; the extraction time is shortened; the extraction yield is improved; and waste liquid outflow is avoided. The yield of the essential oil of the cypress leaves extracted by the method can be up to be over 0.5% while the time is just 3-5 minutes; no environmental pollution is generated; and the method is an efficient, energy-saving and environment-friendly extraction mode.

The invention relates to a method for separating and purifying four phloroglucinol compounds from dryopteris fragrans, and aims at providing a safe, economical and effective method for separating and purifying monomers of aspidinol, aspidin PB, dryopteris fragrans element and aspidin BB. The method takes dry dryopteris fragrans as a raw material and comprises the following steps of: increasing the content of free active components by the homogenate induction technology and enzyme hydrolysis technology; performing ultrasonic-assisted extraction, quenching extraction, negative-pressure cavitation extraction and microwave-assisted extraction by taking ethanol as a solvent to obtain an extract; and performing ultrasonic oscillation flocculation technology, negative-pressure cavitation suspension solid extraction technology, macroporous resin column chromatographic enrichment technology, gel separation, normal-phase silica gel medium-pressure column chromatography isolation technology and low-temperature crystallization and recrystallization technology on the extract to obtain four monomers of aspidinol, aspidin PB, dryopteris fragrans element and aspidin BB, wherein the purity of the four monomers can exceed 95%. The method provided by the invention has the advantages that the separation and purifying technology is simple and easy to implement and safe to operate, the product yield is high, the purity is high and the dryopteris fragrans resource is rich and easily available, and is suitable for industrial application.

The invention belongs to the field of asparagus deep processing, and discloses an asparagus polysaccharide extract product, a preparing method thereof and applications of the extract product. The main monosaccharide components of the extract product are D-galactose and 3,6-anhydro-L-galactopyranose. The extract product is prepared by steps of drying and smashing asparagus, extracting with an organic acid, neutralizing with an alkali, performing ultrasonic extraction, performing ultrafiltration, separating by ion exchange resin, concentrating and performing alcohol precipitation. The preparing method is simple and efficient and suitable for industrial production. The extract product has characteristics of high antioxidation activity, high blood glucose-lowering activity, and high inhibition efficiency for dipeptidyl peptidase IV, and can be used for preparation of blood glucose-lowering medicines or healthcare products.

The invention relates to a separation and purification method of a pachymic acid monomer, and belongs to the technical field of separation and purification of active ingredients of traditional Chinese medicines. The pachymic acid monomer is obtained by taking poria cocos as a raw material, extracting twice and crystallizing. The method specifically comprises the following main steps: A, extracting, namely grinding the poria cocos into coarse powder, and performing reflux extraction by ethanol to obtain thick extractum; B, extracting, namely extracting the thick extractum by ethyl acetate to obtain a crude product of pachymic acid; C, crystallizing, namely dissolving the crude product by an organic solvent, crystallizing and filtering to obtain the pachymic acid monomer with the purity not less than 98%. The whole process is easy and convenient to operate, stable, low in cost, high in separation efficiency and product purity, and suitable for the industrialization production of the high-purity pachymic acid monomer.

The invention discloses a method for performing rapid gene typing on trace human papilloma virus (HPV), which has the characteristics of wide application range, high sensitivity, accuracy and high efficiency. Based on a polymerase chain reaction (PCR) detection method, nested amplification is performed on an HPV L1 conservative region for three times, electrophoresis detection and sequencing are performed on a target product and the target product is typed by using special analysis software so as to correctly and rapidly diagnose trace HPV virus infection and detect and identify various HPV gene types, such as high-risk type, low-risk type and the like. The method has high sensitivity and wide application range, can be used for detecting various types of samples, such as paraffin sections, formalin-dipped tissues, blood samples, cast-off cells and the like, and is convenient to apply to early screening of cervical cancer.

The invention discloses an organic compound-derived magnetic carbon nanomaterial with a metallic framework and application of the organic compound-derived magnetic carbon nanomaterial, and belongs to the technical field of organic nanomaterials. The organic compound-derived magnetic carbon nanomaterial is prepared by the following steps: with cobalt (II) and ferrum (III) as central ions, 2-methylimidazole, terephthalic acid and 4,4'-diphenic acid as ligands, and polyvinylpyrrolidone as dispersing agents, forming a cobalt-based and ferrum-based metallic framework organic compound in a self-assembly manner at room temperature; and with the cobalt-based and ferrum-based metallic framework organic compound as a template, carrying out high-temperature calcining under nitrogen protection, so as to obtain the magnetic carbon nanomaterial. The organic compound-derived magnetic carbon nanomaterial is applied to a separation carrier of N-glycoprotein; through the interaction between a large number of carbon and glycosyl of a nano-scale magnetic carbon material, appropriate mesopores and high specific surface, a novel method for simply and rapidly extracting the N-glycoprotein from a biological sample is built; and by combination with a biological mass spectrometry detection method, the condition that the synthetic magnetic carbon nanomaterial has high repeatability, significant specificity, high enrichment factor and low detection limit on the N-glycoprotein is proved.

The invention relates to a method for extracting crabapple polyphenols from crabapple skin dregs, which comprises the procedures of soaking of the dried and smashed crabapple skin dregs in ethanol solution, ultrasonic extraction, column chromatography separation and purification, rotary evaporation concentration, vacuum drying and the like, wherein, the polyphenols are extracted from the crabappleskin dregs soaked in the ethanol solution in an ultrasonic extraction device, the ultrasonic power is 250W, and the AB-8 macroporous resin column chromatography method is adopted for separation and purification. The crabapple polyphenols are powder products, and the content of the polyphenols is 65%-80%. Raw materials used for extracting the crabapple polyphenols by adopting the method are the crabapple skin dregs, thereby not only utilizing wastes, but also reducing environmental pollution; and the method has the advantages of time-saving property, energy conservation, high extraction rate of the polyphenols and no solvent residue, and can greatly improve the additional value and the comprehensive utilization efficiency of agricultural and sideline products. The method can solve the problems of long extraction time and low purity of the conventional method, and is easy to realize the industrial production.

The invention relates to a preparation method of multipurpose functional water. The preparation method comprises the following steps of: preparing a leech extracting solution; preparing a polymineral element solution; and mixing the leech extracting solution and the polymineral element solution according to the mass ratio of 5:(200-500) at 10-20 DEG C so as to obtain the multipurpose functional water. The preparation method utilizes ultrasonic-assisted extraction, so that the extraction efficiency of effective constituents of leech can be enhanced, and the waste of the raw material is reduced. According to the prepared multipurpose functional water, Fe, Cu, I and Mn can play a role of protecting the effective constituents in the leech extracting solution, so that the target concentration of medicinal components of the leech extracting solution can increase, and furthermore, the use effect of the solution is improved.

A method for biologically treating wastewater having organic matter is provided where the treatment occurs in a sequencing batch reactor having biomass granules therein. Wastewater to be treated is fed under anaerobic conditions into the reactor so as to fluidize the biomass granules. After feeding, the contents of the reactor are stirred. After stirring, the wastewater and biomass granules are subjected to aeration. Thereafter, the treated wastewater is decanted.

The invention discloses a processing and utilizing technology for hemp seeds with shells. The processing and utilizing technology comprises the following steps: firstly, carrying out vacuum drying onhemp seed raw materials, and then cooling, crushing and sieving; secondly, filling an extraction kettle of supercritical carbon dioxide extraction equipment with treated hemp seed powder, then carrying out boosting extraction and decompressing separation, fractionally collecting grease extracted at different stages during extraction and separation, and finally, carrying out rapid pressure relief puffing treatment on degreased residues. According to the processing and utilizing technology disclosed by the invention, a supercritical ERYA fluid variable pressure extraction technology is combinedwith a rapid pressure relief puffing treatment technology, so that hemp seed oil has the advantages of high yield, good quality and short extraction time; in addition, nutritional ingredients in the hemp seed oil and bioactive substances are sufficiently retained, and particularly degreased hemp seed powder is subjected to puffing treatment for facilitating subsequent further processing and utilization; the processing and utilizing technology is a processing method with the advantages of simplicity, high efficiency, safety, greenness and energy conservation for the hemp seeds with the shells.

The invention relates to a circuit board netlist information fast extraction method. The method comprises the steps that 1 test points on a tested circuit board are determined, and test point labels and coordinate information are acquired; 2 a network node analysis method is used to roughly divided all test points on the tested circuit board into multiple networks; 3 connectivity test is carried out on each network inner test point; and 4 the netlist information of the tested circuit board is extracted according to the test point labels. According to the invention, the connection relation information of the circuit board is extracted by contacting surface solder joints of the circuit board; and the tested circuit board is prevented from being damaged; after a netlist information extraction program is written, a fly-on-line tester can automatically complete the network division of the test points and the connectivity test of networks; the automation degree is high; and deficiencies in the prior art are overcome.

The invention discloses a kit and method for extracting blood genome DNA based on a magnetic bead technology, and belongs to the field of molecular biology. The kit comprises five components, namely lysate, red blood cell lysate, magnetic beads, a magnetic bead bleaching solution and a DNA eluent. The kit disclosed by the invention does not contain an organic solvent; after complete blood cells are split, DNA molecules are adsorbed through the magnetic beads; impurities are removed through bleaching; finally, the DNA molecules on the magnetic beads are eluted, so that the high-quality genome DNA is obtained. The kit has the advantages of simple and quick operation, high extraction efficiency, low cost and the like. The extracted blood genome DNA is high in purity, and can accord with subsequent scientific researches such as PCR amplification and gene sequencing or clinical diagnosis and analysis.

The invention discloses a method for extracting a blood sugar-reducing panaxan by an enzyme method and the application of the obtained panaxan. The method comprises the following steps of after slicing clean gen-seng into slices with the thickness of 5mm, performing steam explosion treatment on the slices, and drying the slices to obtain gen-seng powder; placing the obtained gen-seng powder in an enzymatic vessel, adding biologic composite enzyme preparations containing mixed protease, pectinase, glucose amylase, lignin-degrading enzyme and laccase into the vessel, and performing enzymolysis for 3 to 5 hours under the action of a high-pressure pulse field; heating the solution obtained after enzymolysis for 5 to 7 minutes at the temperature of 100 DEG C to passivate the solution, adding an organic solvent into the solution to leach for 2 to 3 times, performing centrifugal separation, and after mixing the supernatants, performing spray drying to obtain powder, wherein the drying temperature is not more than 65 DEG C, and the water content is controlled to be less than 7 percent. Due to the fact that in an enzymolysis reaction process, a steam explosion treatment technology and the high-pressure pulse field are introduced, the activity of the enzyme preparation is improved, the enzymolysis reaction speed is increased, and dissolution of saponin substances in the gen-seng is quickly and effectively promoted.