83results about How to "Reduce extraction time" patented technology

The invention belongs to the technical field of biology, and particularly relates to an extraction method of polydeoxyribonucleotide, which comprises the following steps: carrying out homogenate treatment on pretreated in-vitro testis tissue, filtering the obtained homogenate, adding a pancreas extract into the filtrate, and stirring to obtain enzymatic hydrolysate; and precipitating protein in the enzymatic hydrolysate, removing the protein, adding sodium acetate for treatment, adding absolute ethyl alcohol for precipitation, centrifuging, washing the obtained precipitate, and drying to obtain the product. Common trypsin and lipase in fish pancreas are beneficial to release of DNA, the fish pancreas extract is applied to extraction of the polydeoxyribonucleotide, the extraction time can be remarkably shortened, the yield can be increased, meanwhile, nuclease in the fish pancreas extract can effectively degrade DNA, and small-fragment polydeoxyribonucleotide is obtained.

The invention relates to the technical field of video processing, in particular to a video key frame extraction method and system based on shot segmentation and a VGG neural network, and the method comprises the steps: firstly, extracting LBP-HF features and Canny features of continuous video frames, and obtaining shot boundary frames; then calculating the inter-frame similarity of boundary frames of adjacent shots, and dividing each shot into an active area or an inactive area by setting a threshold value; selecting a shot boundary frame as a coarse extraction key frame set for an inactive area; for the active area, sequentially inputting the video frames in the shot into a VGG19 convolutional neural network for feature vector description, extracting image depth features, calculating the similarity between the video frames, setting a threshold value to determine key frames, and adding the obtained key frames of the active area into a coarse extraction key frame set; and finally, removing key frames with high similarity in the roughly extracted key frame set to obtain a final video key frame set. According to the method, the key frame extraction efficiency and accuracy are effectively improved.

The invention discloses a method for extracting shrimp oil from penaeus vannamei boone processing by-products, which specifically comprises the following steps: freeze-drying penaeus vannamei boone heads, crushing into powder, adding absolute ethyl alcohol in proportion, and carrying out ultrasonic extraction and solid-liquid separation to obtain a solid matter and a supernatant A; and evaporating and concentrating the supernate to obtain the penaeus vannamei oil with high extraction rate. The extraction rate is more than 95%. The method provided by the invention not only improves the extraction rate of shrimp oil from South America white, but also greatly shortens the extraction time.

The invention discloses a compressor air cylinder base grinding device, and relates to the technical field of air cylinder machining and grinding, the compressor air cylinder base grinding device comprises a machining base and further comprises a clamping device, a machining frame is fixedly installed at the bottom of the machining base, a servo motor is fixedly installed on the front side of the machining frame, and a lead screw is fixedly installed at the output end of the servo motor; a moving block is slidably installed on the inner wall of the machining frame and is in threaded connection with the lead screw, the clamping device comprises an electric push rod, a stabilizing plate, a detection rod, a detection plate, an elastic telescopic block, a shielding plate, a button and a limiting hole, the shielding plate moves to break away from contact with the button and release shielding of the button, the clamping force of the stabilizing plate is controlled through limiting, and the clamping force is adjusted to be larger than the clamping force of the limiting hole. Therefore, clamping pressure is uniform and moderate, deformation of the workpiece can be avoided, button shielding can be relieved only after the workpiece is clamped stably, and accidental starting of grinding equipment caused by manual mistaken touch can be reduced.

The invention relates to a ganoderma lucidum beverage and a making process thereof, and belongs to the technical field of drinks, the making process comprises the following steps: uniformly mixing lactobacillus acidophilus and bifidobacterium bifidum to obtain a mixed bacteria solution; inoculating the mixed bacterial liquid into a culture medium for culturing, and then mixing with a lucid ganoderma extract to obtain a lucid ganoderma active substance; packaging the lucid ganoderma active substance with maltodextrin and beta-lactoglobulin to obtain a lucid ganoderma encapsulated substance; and mixing the ganoderma lucidum encapsulation material, a sweetening agent, a thickening agent and water, homogenizing, sterilizing, cooling and aseptically filling to obtain the ganoderma lucidum beverage. According to the technical scheme, the two probiotics are mixed according to a certain volume ratio, intestinal flora balance can be effectively adjusted, proliferation of bad microorganisms in the intestinal tract can be inhibited, the probiotics and the ganoderma lucidum extract are jointly packaged in a microcapsule system formed by the maltodextrin and the beta-lactoglobulin, the stability of the microcapsule is improved, and the preparation process is simple and convenient. And the prepared ganoderma lucidum beverage has relatively good mouth feel and flavor.

The invention relates to a method for ultrasonic-enhanced extraction of a multicoloured leaf extract by using an ethanol and ethyl acetate cosolvent, and belongs to the technical field of chemical engineering and plant extraction. (2) synergistically degrading cellulose by using multi-component glycosidase; (3) cosolvent extraction; 4, chloroplast pigment is efficiently separated and purified, chlorophyll and other impurities in an extracting solution are effectively separated and removed through silica gel column chromatography, and therefore the high purity of the multicoloured leaf extract is achieved; according to the invention, ethanol and ethyl acetate are used as cosolvents to extract the multicoloured leaf extract, so that the extraction efficiency and the purity of the extract can be improved.

The invention relates to the field of agricultural pest control, and discloses a composite pest control agent based on a plant extract as a core. Comprising 15%-25% of honeysuckle extract, 10%-20% of podophyllum hexandrum extract, 15%-25% of camellia peel extract, 10%-20% of wikstroemia indica extract, 10%-20% of senecio scandens extract, 10%-20% of lycoris radiate extract, 1%-3% of a synergist, 5%-10% of an emulsifier and a solvent. According to the invention, a plurality of plant extracts are fused, and effective prevention and control of a plurality of fungi, bacterial diseases and pests are realized through accurate optimization of the ratio. Compared with a current technology which only adopts a single plant extract, the method has the advantages that the comprehensive prevention and treatment efficiency is remarkably improved, the problems of limited prevention and treatment range and poor multi-pest control effect are successfully solved, and the blank in the research and application field of the compound plant extract prevention and treatment agent is filled.

The invention belongs to the technical field of volatile oil extraction, and particularly relates to an extraction method of antiviral oral liquid volatile oil, which comprises the following steps: weighing medicinal materials according to a prescription proportion, crushing the medicinal materials, mixing, adding into a volatile oil extraction tank, adding ionic liquid, adding distilled water, heating, and separating water and volatile oil to obtain the antiviral oral liquid volatile oil. The method for extracting the volatile oil of the antiviral oral liquid has the beneficial effects that the volatile oil is extracted by adopting an ionic liquid assisted steam distillation extraction method, and compared with a traditional extraction method, the cost is reduced, the operation steps are simplified, and the extraction rate of the volatile oil is improved; by controlling the type and concentration of the ionic liquid and controlling the liquid-material ratio, the heating temperature and the heating time, the extraction rate of the volatile oil is improved, and the activity of antiviral components in the volatile oil is ensured; the feasibility in actual operation is considered when the extraction conditions are optimized, and the method is easier to industrially extract the antiviral oral liquid volatile oil on a large scale.

The invention discloses an extraction device and an extraction method of star anise essential oil, and belongs to the technical field of vegetable oil extraction. The extraction device provided by the invention comprises a round-bottom flask, an air condensation pipe, a distillation head, a condensation pipe, a receiving pipe and a receiving bottle, the opening of the round-bottom flask is connected with the bottom of the air condensation pipe; the top of the air condensation pipe is connected with a bottom end pipe of the distillation head; a side end pipe of the distillation head is connected with the top of the condensation pipe; the bottom of the condensation pipe is connected with the top of the receiving pipe; inserting the tail part of the receiving tube into a receiving bottle; and a polymeric membrane is loaded at the top of the air condensation pipe. According to the extraction device and the extraction method of the star anise essential oil, the problems of long time consumption, large steam consumption and high energy consumption in a traditional extraction process are solved, and meanwhile, the extraction rate of the star anise oil and the extraction rate of the effective component anethole are greatly improved.

The invention discloses Longshan lily bulbil polysaccharide as well as a preparation method and application thereof, and belongs to the technical field of plant extraction. In the polysaccharide, the total sugar content is greater than 94%, monosaccharide comprises mannose, rhamnose, glucose, galactose and galacturonic acid in a ratio of (5.12 to 5.48): (7.04 to 7.79): (61.55 to 62.38): (17.37 to 18.14): (7.28 to 7.91), and the weight-average molecular weight is 183916 to 184735 Da. The preparation method comprises the following steps: by taking Lilium brownii Bulb as a raw material, carrying out boiling water enzyme deactivation treatment, decolorizing and degreasing, extracting an alcohol insoluble substance with water, synchronously removing starch by using high-temperature-resistant amylase, carrying out microwave digestion on filter residues obtained after filtering by using a sodium hydroxide solution, dialyzing and extracting an extracting solution, and finally preparing the Lilium brownii Bulb polysaccharide with immunocompetence. The method can be applied to food or functional food or medicine, and provides a thought for high-value application of the Longshan lily.

The invention discloses an intelligent nutrient content extraction device and an extraction method thereof. Belongs to the field of food science and nutriology. The device comprises a pupa removing machine, intelligent algorithm regulation and control equipment, a pulverizer, a dryer, an ultrasonic extractor, membrane separation equipment, a soft capsule machine and detection equipment, according to the extraction method, tussah is selected to prepare medicines according to daily nutritional requirements of old people; the method comprises the following steps: collecting high-quality tussah, separating, cleaning, drying, crushing, and efficiently extracting effective components by utilizing ultrasonic waves; and separating and purifying the extracting solution through a membrane to obtain a high-purity medicinal component, and processing the high-purity medicinal component into a gelatin capsule. Process parameters are strictly controlled in the whole process; performing quality detection and safety evaluation; the tussah is rich in required energy, protein, mineral substances and vitamins, and the finished product of the tussah not only meets nutritional requirements, but also has various health-care effects. The method has the characteristics of integrated equipment and system optimization, efficient extraction technology, high-purity purification process and customized nutrition.

The invention discloses a method for preparing an elderberry extract, and relates to the technical field of plant extraction; the method comprises the following steps: S1, extracting an elderberry raw material by countercurrent extraction to obtain an extract; S2, concentrating the extract to obtain a concentrated solution; S3, mixing the concentrated solution, a glycosyl donor and an enzyme, and then glycosylating to obtain a glycosylated product; S4, passing the glycosylated product through a macroporous resin column, eluting with water and an ethanol aqueous solution with a volume fraction of 50% to 70% in sequence, and collecting the ethanol aqueous solution eluate; S5, microfiltration and nanofiltration of the ethanol aqueous solution eluate in sequence, collecting the filtrate; and concentrating the filtrate to dryness. The preparation method of the invention has simple steps and low cost; and an anthocyanin extract with a mass content of ≥65% is also prepared.

This utility model belongs to the field of traditional Chinese medicine extraction and separation technology. It discloses an integrated system for the extraction and separation of heat-sensitive components from traditional Chinese medicine, including a stirred extraction tank, a cooler, a cyclone centrifuge, a stirring device, a power delivery pump, an ultrasonic generator, and an air-lift device. The stirred extraction tank includes a tank body with a discharge port at the bottom and a jacketed cylinder on the side wall. An annular cavity is left between the jacketed cylinder and the tank body, with an inlet and an outlet on the cavity. The tank body is vertically arranged with multiple support legs. A first and second inlet are also provided at the top of the tank body. A stirring device is installed at the top of the tank body. Multiple ultrasonic generators are annularly installed along the side wall of the tank body. The cooler is located on one side of the stirred extraction tank. This utility model integrates stirring and ultrasonic extraction, jacketed hot and cold circulation, and a rapid liquid-residue separation system, significantly improving the extraction efficiency of effective components from traditional Chinese medicine, shortening the extraction time, and effectively protecting the activity of heat-sensitive components.

The invention provides a pesticide residue detection device and a detection method and application thereof.The device comprises a cleaning mechanism, a filtering mechanism, an elution mechanism and a detection module, multiple nucleic acid aptamers are fixed to a filter element, the sequences of the nucleic acid aptamers are optimized, the pesticide fixing and specific capturing capacity is improved, proper cleaning liquid and eluent are screened, and the pesticide residue detection efficiency is improved. And the cleaning and eluting effects of residual pesticides in agricultural products are improved. When the device is used for enriching and detecting pesticide residues, the pesticide residues in the agricultural products can be accurately detected through the detection module only by carrying out nondestructive cleaning, filtering and elution on the agricultural products to obtain a sample solution to be detected, and a test strip or an electrochemical detection part containing a nucleic acid aptamer probe in the detection module can be used for accurately detecting the pesticide residues in the agricultural products. Moreover, qualitative and quantitative detection of residual pesticide can be realized respectively, the structure is simple, the detection is convenient and efficient, and the accuracy of a detection result can be ensured.

This invention discloses a method for extracting total phenols from rapeseed oil and a method for testing its content. The extraction method includes the following steps: Step 1: Weigh rapeseed oil into a glass test tube, add methanol, vortex to mix, sonicate, and freeze; Step 2: Transfer the upper layer liquid in the glass test tube to another clean test tube, dry it under weak nitrogen gas in a metal bath, redissolve the residue in a methanol-water solution, vortex to mix, and store for later use. The extraction method for total phenols from rapeseed oil in this invention uses methanol dissolution, ultrasonic-assisted extraction, and freezing to effectively separate the rapeseed oil and the extract. This method combines organic solvent extraction and ultrasonic-assisted extraction, significantly saving extraction time and yielding rapeseed oil with a high total phenol content. Furthermore, by replacing the standard (gallic acid) in the industry standard for determining the total phenol content of vegetable oils with canolol, this invention is more suitable for determining the total phenol content in rapeseed oil.

The present invention belongs to the technical field of extracting biologically active substances from black wormwood, and in particular, to a black wormwood rhizome crushing device and extraction method for extracting biologically active substances from black wormwood, comprising a frame, a crushing box is installed on the top of the frame, a crushing chamber is opened on the crushing box, a powder hopper is provided below the crushing box, a hopper is fixedly installed through the top of the crushing box, a crushing mechanism is provided in the crushing chamber, and a driving mechanism is provided on the frame. The present invention cooperates with two-component cutting blades and two arc filter plates. After the two-component cutting blades crush and cut the black wormwood rhizomes, the two arc filter plates are used to screen the cut black wormwood rhizomes, and by sorting out large-particle black wormwood rhizomes, it is convenient for the subsequent two-component cutting blades to crush and cut them again, and the two grinding rollers can crush and grind the small-particle black wormwood rhizomes sorted by the arc filter plates.

The invention relates to a magnetic covalent framework material and application thereof in bee product quinolone drug detection, the magnetic covalent framework material is a magnetic material taking magnetic nanoparticles as a core and loading organic monomers melamine and 2, 4, 6-triformyl benzenetriol on the surfaces of the magnetic nanoparticles, the specific surface area is 1000-1500m < 2 > / g, the pore volume ratio is 4-5cm < 3 > / g, and the magnetic covalent framework material is a covalent framework material. The solid-phase extraction adsorbent can be used as a solid-phase extraction adsorbent for extracting quinolones in bee products, the extraction time is as low as 4 minutes, and the solid-phase extraction adsorbent can be repeatedly used for more than 6 times; according to the present invention, the quinolone drug residue in the bee product is detected by combining the liquid chromatography-tandem mass spectrometry, the elution time of the chromatographic mobile phase of the method can be shortened to 14 min, the detection limit is as low as 0.04 [mu] g / kg, the quantification limit is as low as 0.12 [mu] g / kg, and compared with the existing national standard method, the method has advantages of high detection sensitivity, high accuracy and short detection time.

The utility model discloses a kind of east white cold tea quick cold extraction device, including cup body, the upper end of cup body is connected with cover body, the central position of the lower part of cover body is equipped with stirring device, stirring device includes motor, the output end of motor is connected with stirring paddle, the lower part of cover body is also connected with filter screen cover, and the recessed cavity corresponding to stirring paddle is equipped on filter screen cover.The utility model is provided on cover body with the filter screen cover for containing tea leaf, when cold extraction is carried out to tea leaf, cup body is inverted, i.e. Cover body is placed downward, make cold water completely soak tea leaf, and stirring paddle is driven by motor to stir cold water, make cold water drive tea leaf to tumble motion in filter screen cover, realize dynamic cold extraction, compared with directly through cold water to carry out cold extraction, can effectively shorten extraction time, guarantee extraction effect.

The invention belongs to the technical field of natural product extraction and preparation, and discloses a kudzu vine extract having oil-controlling and acne-removing effects, a preparation method thereof, and an application thereof. The method of the invention utilizes the synergistic effect of reverse micelle solvent and flash extraction to significantly improve the extraction rate of active substances of kudzu vine, deeply extracts the active ingredients in kudzu vine, and makes the obtained kudzu vine extract have good oil-controlling and acne-removing effects, and is particularly suitable for preparing oil-controlling and acne-removing products. The method shortens the extraction time, reduces energy consumption, and realizes the recycling of reverse micelle solvent.

The invention relates to the technical field of total flavone extraction. The invention provides an extraction method of idesia cake total flavonoids, which comprises the following steps: (1) crushing and drying idesia cake obtained after pretreatment to obtain idesia cake powder; and (2) mixing the idesia cake meal powder with an organic solvent, performing ultrasonic treatment, separating, performing rotary evaporation, and concentrating to obtain the idesia cake meal. According to the extraction process and setting of parameter conditions, the extraction time can be effectively shortened, the extraction efficiency is improved, and wide application value is provided for development and utilization of idesia cake flavone.

This invention relates to an extraction method for enhancing the hypoglycemic activity of mulberry leaf peptides. Freshly harvested mulberry leaves are washed, crushed, and then water and alkaline protease are added for extraction. After extraction, the enzyme is inactivated to obtain the mulberry leaf peptide extract. The extract is then filtered through a plate and frame filter to obtain a clear liquid and a residue. The clear liquid is further fractionated using ultrafiltration and nanofiltration membranes to obtain components with different molecular weight ranges. These components are then concentrated, sterilized using filter cartridges, and spray-dried to obtain products with different molecular weight ranges. This invention utilizes a fractionation and purification technology in the mulberry leaf peptide extraction process, resulting in different grades of mulberry leaf peptide products suitable for various hypoglycemic cases and scenarios.

The application relates to a cause-effect relationship extraction method and device, electronic equipment and a readable storage medium. The method comprises the following steps: receiving a text to be extracted, performing a word segmentation operation on the text to be extracted to obtain a plurality of unit words, and performing part-of-speech tagging on each unit word to obtain a part-of-speech identifier corresponding to each unit word; obtaining a preset event rule set, combining unit words with event sub-rules in the preset event rule set, and obtaining a plurality of unit events; obtaining a trained rule model, inputting the unit events into the trained rule model, and obtaining a cause-effect relationship extraction result of the text to be extracted through the output of the trained rule model. By setting the event rule set, when event extraction is required for the text to be extracted, the unit words are directly matched through the preset event rule set, without the need for analysis based on the dependency relationship between the unit words, so that the event extraction time is greatly reduced, and the extraction efficiency of the cause-effect relationship is improved.

The invention relates to the technical field of collagen preparation, and discloses a method for extracting collagen from jellyfish by using a salt method, which comprises the following preparation steps: 1, sample treatment; step 2, homogenizing; 3, performing ultrasonic treatment; step 4, extracting; (5) centrifuging; step 6, performing ultrafiltration; and 7, freezing and freeze-drying. According to the method, collagen prepared from jellyfish is dissolved in 0.1 mol / L, 0.2 mol / L, 0.5 mol / L, 1.0 mol / L, 1.5 mol / L and 2.0 mol / L sodium chloride, sodium acetate, sodium citrate and phosphate solutions respectively, an aqueous solution serves as blank control, the optimal salt solution type and concentration of the jellyfish collagen are screened out, results show that the solubility of the jellyfish collagen in the 0.1 mol / L-0. 2 mol / L sodium chloride solution is the maximum, and on the basis of the conclusion, the optimal salt solution type and concentration of the jellyfish collagen can be obtained. And extracting and purifying by combining ultrasonic extraction and ultrafiltration to obtain the collagen. According to the method provided by the invention, the extraction time can be shortened, the cost is saved, the introduction of impure protein is reduced, and the influence on the complete structure of collagen is reduced.

The invention belongs to the technical field of magnetic solid-phase extraction and analysis. The invention provides a method for quantitatively detecting bisphenol pollutants in traditional Chinese medicines for soil and roots based on a magnetic MOF (at) COF porous composite material combined with LC-MSMS. The method comprises the steps of preparation of the magnetic MOF (at) COF porous composite material, sample pretreatment and LC-MSMS detection and quantitative analysis. The magnetic MOF (COF) porous composite material disclosed by the invention has rich hierarchical pore structures and high specific surface area, not only retains regular pore channels and active sites of a metal organic framework (MOF), but also is connected with a covalent organic framework (COF), so that the stability of the material is greatly improved. Meanwhile, the material is mild in preparation condition, low in cost and excellent in adsorption performance. Compared with the existing method, the detection method provided by the invention has the advantages of more thorough extraction, lower detection limit, higher recovery rate, simpler operation and lower cost, and is suitable for two matrixes of soil and root system traditional Chinese medicines.

The utility model relates to the field of kettle discloses an ultrasonic wave cold extraction kettle, including the kettle body that top is provided with opening and the installation cavity that inner chamber bottom is provided with, the kettle cover that cover is located the kettle body top, the extraction bin that uses with the kettle cover cooperation and can separate, set up in the installation cavity and be used for separating the kettle body with the installation cavity's isolation sheet, set up in the isolation sheet bottom's ultrasonic generator and be used for with the bottom cooperation of kettle body and be used for with ultrasonic generator electricity connection's base, the extraction bin extends to be located above the isolation sheet downwards, and the bottom of extraction bin is provided with the bottom plate, is equipped with ultrasonic transmission filter hole on the bottom plate, the outer peripheral wall of extraction bin is provided with extraction filter hole. Through the extension extraction bin, make the raw material in extraction bin limit in the vibration core area, avoid the raw material excessively to float dispersion, make it sustained full contact high frequency vibration, significantly shorten the extraction time, improve the flavor substance dissolution efficiency.

The invention belongs to the technical field of tobacco detection, and particularly discloses a tobacco volatile matter detection method based on headspace solid-phase microextraction and salting-out combination. Comprising the following steps: S1, removing main veins from sample tobacco leaves, drying, preparing into powder, sealing, and storing in a refrigerator for later use; s2, the tobacco leaf powder is placed in a headspace bottle, an internal standard compound is added, then a boiling salt solution is added, microextraction fibers aged in advance are inserted, water bath extraction and adsorption are carried out, and after extraction is completed, the microextraction fibers are inserted into a GC-MS injection port for desorption; and S3, performing qualitative and quantitative treatment on the volatile substances by adopting GC-MS. The method adopts an HS-SPME method for extraction, does not introduce organic solvent interference, and is simple and rapid to operate, low in cost, high in detection sensitivity and high in detection efficiency.

The invention provides a preparation method of Bistort and Green Tiger Granules for blue ear disease in pigs, and the preparation method comprises the following steps: S1, taking dried Bistort, Terminalia chebula, Polygonum cuspidatum, Folium Isatidis, Folium Chrysanthemi, and Folium Eucommia for crushing to obtain a mixed crushed material; S2, placing the mixed crushed material in an ethanol / water mixed solution, ultrasonic extraction, ultrahigh pressure extraction; filtering to obtain a filtrate 1 and a filter residue 1; the filtrate 1 is decompressed and concentrated to obtain a concentrated solution 1; S3, placing the filter residue 1 in water, ultrahigh pressure extraction; filtering to obtain a filtrate 2 and a filter residue 2; the filtrate 2 is decompressed and concentrated to obtain a concentrated solution 2; S4, adding ethanol to the filter residue 2 and then adding ethyl acetate, ultrahigh pressure extraction; filtering to obtain a filtrate 3; the filtrate 3 is decompressed and concentrated, dried to obtain an extract; S5, mixing the concentrate 1 and the concentrate 2, adding the extract and auxiliary materials, mixing evenly, and granulating. The Bistort and Green Tiger Granules prepared by the invention can effectively treat blue ear disease, with a high overall cure rate and good safety.

The invention provides a preparation method and application of a composition with the efficacy of dispelling wind and promoting diuresis, red beans, coix seeds, ginseng, sea cucumber body walls, poria cocos and fresh lalang grass rhizome are used as main raw materials, and extraction is performed by using an enzymolysis and ultrasonic composite extraction process, so that efficient extraction of active ingredients in the raw materials can be realized; the prepared composition has the effects of resisting oxidation, dispelling wind and promoting diuresis, and an oral preparation prepared from the composition as a raw material is convenient to carry and suitable for daily use.

The invention relates to the technical field of plant active ingredient extraction, and particularly discloses a method for efficiently preparing paeonol from moutan bark based on improved aqueous two phases. The method comprises the following steps: (1) extracting moutan bark powder in an aqueous two-phase system for 6-8 hours at 35-40 DEG C, and separating to obtain an upper phase solution rich in paeonol; wherein the aqueous two-phase system is composed of a sodium dihydrogen phosphate aqueous solution, tetrahydrofuran, ethanol and ethyl acetate, and the pH value of the sodium dihydrogen phosphate aqueous solution is 3.0-4.0; (2) sequentially carrying out vacuum concentration and drying on the upper-phase solution to obtain a paeonol crude product; and (3) recrystallizing the crude paeonol product for 4-6 hours by using a 70-75 vol% ethanol aqueous solution at 4-10 DEG C, filtering and drying in vacuum to obtain high-purity paeonol. The method provided by the invention can significantly improve the partition coefficient, yield and product purity of paeonol, reduce the use amount of the organic solvent and shorten the extraction time, has the advantages of environmental protection, simplicity, convenience, low production cost and the like, and is suitable for large-scale production.

The invention provides a method for ultrasonic-assisted extraction of lycium ruthenicum anthocyanin, which comprises the following steps: (1) taking fresh lycium ruthenicum, removing pedicles, and grinding into homogenate in a precooled mortar; and (2) adding the lycium ruthenicum homogenate obtained in the step (1) into 75% of an extracting solution B containing 0.1% of hydrochloric acid according to a material-liquid ratio of 1: (30-70), and extracting for 10-60 minutes in a constant-temperature ultrasonic extractor under the conditions that the ultrasonic temperature is 20-60 DEG C and the ultrasonic extraction power is 160W-320W to obtain an anthocyanin extracting solution. According to the method, four factors which influence anthocyanin extraction, namely a material-liquid ratio, an ultrasonic extraction temperature, extraction time and extraction power, are optimized by utilizing a response surface analysis method, so that optimal ultrasonic extraction parameters are obtained; based on the parameters, the ultrasonic-assisted method for extracting the anthocyanin from the lycium ruthenicum, which is provided by the invention, is simple to operate, short in extraction time, high in extraction efficiency and low in cost.