38results about How to "Reduce extraction time" patented technology

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.

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 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.

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 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.

This invention discloses a method for preparing Iota carrageenan. Using *Euphorbia tirucalli* as raw material, the raw material is washed to remove salt and sand, then alkali-modified in a potassium hydroxide solution. After acid neutralization, the raw material is directly soaked, ground, and ultrasonically extracted. The extract is then homogenized and finely filtered. A calcium chloride coagulant solution is added, and after mixing, only ethanol is added for dehydration. The precipitate is granulated, dried at low temperature, and pulverized to obtain high-yield, high-viscosity pure Iota carrageenan. This invention employs ultrasonic extraction technology, significantly improving the extraction rate of Iota carrageenan. The potassium salt formed during neutralization saves process water and provides a coagulant for the subsequent coagulation process. Furthermore, the addition of a low concentration of calcium chloride for coagulation greatly reduces the amount of ethanol used in traditional dehydration processes. This invention represents a novel, low-energy-consumption, high-yield, green extraction process for Iota carrageenan with broad application prospects.

The invention provides a potato-tower-shaped nanofiber as well as a preparation method and application thereof, and belongs to the technical field of solid-phase microextraction. The preparation method of the potato-tower-shaped nanofiber comprises the following steps: mixing and dissolving a fiber-forming polymer, an amino precursor, a spinning aid and a solvent I to prepare an electrostatic spinning solution; preparing nanofibers by using an electrostatic spinning technology; the preparation method comprises the following steps: soaking nanofibers in water, and washing and drying after soaking; dissolving an aldehyde group precursor and a template agent into a solvent II to obtain a mixed solution, dipping the nanofiber into the mixed solution, adding a catalyst, and then performing solvothermal reaction to obtain the potato-tower-shaped nanofiber. A large number of uniformly-distributed and orderly-arranged sheet structures are inlaid on the surface of the nanofiber, and the whole fiber is in a potato tower shape; the potato-tower-shaped nanofiber has excellent extraction performance on a micro-plastic loaded plasticizer. The potato-tower-shaped nanofiber disclosed by the invention shows good application potential in the fields of sample pretreatment and solid-phase microextraction.

This invention relates to the field of traditional Chinese medicine extraction technology, specifically disclosing a method for ultrasonic extraction of flavonol glycosides from Epimedium using a eutectic solvent-assisted process. The method involves mixing choline chloride and glycerol, heating to prepare a eutectic solvent; mixing Epimedium leaf powder with a mixture of 70% ethanol and the eutectic solvent; ultrasonic extraction followed by centrifugation and filtration to obtain the Epimedium flavonol glycoside extract. The extraction method provided by this invention is green, efficient, and operates under mild conditions, resulting in good extraction effects. Compared with conventional ethanol ultrasonic extraction, the extracted icariin content is increased by 37.93%, and the total content of the three monomers is increased by 22.99%, providing technical support for the large-scale preparation and further development and utilization of Epimedium flavonol glycosides.

The invention discloses a method for preparing a sea cucumber extract by using a microwave-assisted technology, which comprises the following steps: S1, preparing a sea cucumber sample: preparing a fresh or dry sea cucumber sample into proper particles or powder; s2, preparing an extracting solution: selecting a proper extracting solvent according to the extraction purpose and requirement to prepare the extracting solution; s3, microwave-assisted extraction: mixing the sea cucumber sample with the extracting solution, putting the mixture into a microwave-assisted extraction device, and heating the mixture of the sea cucumber sample and the extracting solution by utilizing microwave radiation; and S4, microwave treatment parameter control: adjusting the time, temperature, power and other parameters of microwave treatment. The sea cucumber extract is prepared by using a microwave-assisted technology, sea cucumbers are heated through microwave energy, release and extraction of active ingredients of the sea cucumbers are promoted, the action efficiency between the sea cucumbers and the extracting solution is greatly improved, and the method is simple and convenient to operate and has the advantages of improving the sea cucumber extraction efficiency, shortening the extraction time and the like; the method is suitable for large-scale production and industrial production.

The utility model discloses a grounding electrode pull-out suite, a pull-out device comprises a pull-out main body and is characterized in that the pull-out main body comprises an input shaft, a reinforcement transmission mechanism and a rope rotating pull-up mechanism, the input shaft is connected with an input part of the reinforcement transmission mechanism, and the rope rotating pull-up mechanism is connected with an output part of the reinforcement transmission mechanism. According to the utility model, the pull-up mechanism is connected with the grounding electrode through the rope rotation, so that the device can adapt to grounding electrodes of various sizes and has high adaptability. According to the utility model, the time for taking out the grounding electrode is greatly reduced, and the overall operation speed is improved; moreover, the device is portable and can be operated by one person, and one grounding electrode can be taken out within 5 minutes at most, so that the labor intensity of workers is reduced, and precious time is saved for quick moving.

The application discloses a kind of crosslinking degree of crosslinked polyethylene testing methods, it is related to the technical field of material detection.A kind of crosslinking degree of crosslinked polyethylene testing methods, comprising the following steps: (1) the screen mesh is wrapped PE-X sample is placed into extraction instrument, solvent is injected to extract, extraction atmosphere is nitrogen atmosphere, extraction temperature is 150-200 DEG C, extraction pressure is 10-15MPa, extraction time is 3-10min;After extraction, remove solvent, this is one extraction;(2) repeat one extraction multiple times after PE-X sample is extracted completely and is extracted with solvent with uncrosslinked portion, and nitrogen is used to the remaining sample is purged;Remaining sample is taken out and dried, and the crosslinking degree of crosslinked polyethylene is calculated.The testing method disclosed in the application has the advantages of easy operation, short testing time, accurate testing result and the like, effectively solves the problem that the result of PE-X crosslinking degree is obtained for a long time in actual production, realizes the timely monitoring of product quality in production process.

The utility model discloses a kind of based on temperature-sensitive control's tea enzymatic supercritical fluid extraction device, including bottom plate, the top of bottom plate is fixedly installed with mounting seat, the top of mounting seat is fixedly installed with enzymatic component, the inside of enzymatic component is installed with stirring component, the other end of bottom plate top is fixedly installed with extraction component, and one end of extraction component is fixedly communicated with separation collection component, a kind of based on temperature-sensitive control's tea enzymatic supercritical fluid extraction device of the utility model, by the pretreatment of the enzymatic method to the tea that needs extraction, target component in tea cell is more easily released into solution, and enzyme can degrade macromolecule combined with target component, reduce impurity adsorption in extraction process, improve the free rate of target component, and by the cooperation of enzymatic and supercritical fluid extraction, enzymatic pretreatment makes target component fully release from matrix, reduce mass transfer resistance, supercritical fluid can quickly diffuse and dissolve target component, shorten extraction time.

The utility model relates to laser engraving machine technical field especially, it relates to a kind of laser engraving machine with material separation structure, including engraving table, laser engraving module, material locking mechanism and material separation mechanism;The surface of engraving table is provided with the receiving piece groove of accommodating engraving material, the top of engraving table is equipped with the laser engraving module for engraving material, the two side edges of receiving piece groove are all provided with lock mouth, the two side edges of the outer end of engraving table are all equipped with the material locking mechanism for locking engraving material, the inside of engraving table is provided with the ejection cavity, the center of receiving piece groove is provided with the top outlet of the communication ejection cavity, the center of ejection cavity is equipped with the material separation mechanism for separating engraving material;The utility model realizes the stable locking of engraving material by material locking mechanism, effectively avoids the problem of the decline of engraving accuracy and engraving failure caused by vibration and displacement of material in the process of engraving, thereby significantly improve the quality and stability of engraving product.

The application relates to a multi-material valuable component efficient leaching device and method based on a pressurized dissolved gas cavitation effect, which comprises a cylindrical pressure-resistant container fixed on a support in a horizontal mode, the end port of the pressure-resistant container is provided with a sealing door; a joint pipe A is arranged at the upper part of one end of the pressure-resistant container, a quick opening and closing valve is connected to the joint pipe A, a joint pipe B is arranged at the upper part of the other end of the pressure-resistant container, an air inlet ball valve is connected to the joint pipe B, and a pressure gauge is arranged in the middle part; a joint pipe C is arranged at the lower part of one end of the pressure-resistant container, a liquid discharge ball valve is connected to the joint pipe C, and a liquid inlet pipe is arranged at the upper part of the end; an aeration assembly connected with the air inlet ball valve is arranged in the pressure-resistant container; a pressurized dissolved gas-instantaneous pressure release cavitation mechanism is adopted to form microscale damage force, break through the microscale mass transfer resistance of a solid matrix, efficiently release the wrapped target components, greatly improve the leaching rate and shorten the extraction time; and process parameters can be flexibly adjusted to adapt to various materials from fragile plant tissues to hard mineral ores.

The utility model discloses a vascular puncture dilator for ECMO relates to dilator technical field. Specifically including dilatation spare and adjusting spare, dilatation spare is a hollow cylinder, and it has open line one in length direction, adjusting spare sets up in the inner wall of dilatation spare, and it is equipped with the open line two of placing guide wire in length direction, wherein, adjusting spare can rotate relative to the axis of dilatation spare, and make open line two and open line one can be selected coincident, to with guide wire from open line two and open line one separate. Dilatation spare and adjusting spare are provided with open line one and open line two respectively, and guide wire can move from open line one to open line two, when open line two and open line one coincide, dilatation spare removes the puncture part, can directly from guide wire on the change, avoided the dilator and needed the guide wire to exit, reduced the time of dilator from guide wire and took out, reduced the amount of bleeding of patient blood vessel after dilatation.

The present application relates to the technical field of tobacco processing, and particularly relates to a tobacco flavor substance extraction device and method. The device comprises an extraction barrel, a grinding assembly, a scraping assembly and a stirring assembly arranged in the extraction barrel. The grinding assembly comprises a grinding disc, a crushing wheel and a driving unit. The grinding disc is fixed in the extraction barrel. The driving unit comprises a motor, a driving gear, a driven gear and a rotating shaft. The motor is installed on the top of the extraction barrel. The scraping assembly comprises a scraper and an elastic force applying structure. The scraper is connected with the rotating shaft through the elastic force applying structure, and the scraper is in contact with the surface of the grinding disc. The stirring assembly comprises a support frame and a stirring member. The support frame is fixed on the lower part of the rotating shaft, and the stirring member is installed on the support frame. The present application solves the problem of low extraction efficiency caused by insufficient crushing and grinding in the prior art, and shortens the extraction time and improves the extraction efficiency per unit time.

The invention provides a fluorescent VPCR identification method for a pinellia ternata adulterated counterfeit product, and belongs to the technical field of drug detection. According to the identification method established by the invention, the extraction time of the DNA of the pinellia ternate medicinal material can be remarkably shortened, one or more of four traditional Chinese medicinal materials such as pinellia ternate, brooklet anemone root, rhizoma typhonii flagelliformis and rhizoma arisaematis and decoction pieces can be identified at the same time, the identification duration is controlled within 1 hour, and meanwhile, the method has excellent specificity, sensitivity, accuracy and applicability and can be widely applied to the field of clinical application. The method can identify 5% of mixed products adulterated in Pinellia ternate, and can provide a new means for quality monitoring of Pinellia ternate medicinal materials and decoction pieces thereof, thereby ensuring lawful rights and interests of consumers and maintaining the normal order of the traditional Chinese medicinal material market.

The invention relates to a microfluidic device for analyzing dissolved gas in insulating oil and a control method. The micro-fluidic device comprises a micro-fluidic chip and a heating device, the micro-fluidic chip is provided with an oil sample inlet, a micro-channel area and a gas-liquid separation area, the oil sample inlet is communicated with the micro-channel area, the micro-channel area is communicated with the gas-liquid separation area, a pump cavity used for containing fluid is formed in the micro-channel area, and the heating device is arranged in the pump cavity. The pump cavity is respectively communicated with the oil sample inlet and the gas-liquid separation area, a piezoelectric brake is arranged in the pump cavity, the piezoelectric brake is connected with an elastic pump membrane of the pump cavity, and the heating device is used for heating the micro-channel area; the piezoelectric brake and the heating device are integrated on the micro-fluidic chip, and the micro-fluidic chip is small in size and high in extraction efficiency.

The present application relates to the technical field of bioengineering, and particularly relates to a fermented liquid of Gomphrena yatschekii, a fermentation method and application thereof.The present application provides a fermentation method of Gomphrena yatschekii, comprising the following steps: (1) mixing Gomphrena yatschekii with mixed enzymes for enzymolysis, and sterilizing to obtain an enzymolysis liquid of Gomphrena yatschekii; (2) mixing the enzymolysis liquid of Gomphrena yatschekii with a compound microbial agent for fermentation, and filtering and sterilizing after fermentation to obtain a fermented liquid of Gomphrena yatschekii; the compound microbial agent is Lactobacillus plantarum LZU-J-TSL6 and Lactobacillus plantarum LZU-J-QA25.After fermentation by the method, the effective components in Gomphrena yatschekii are fully dissolved, the drug activity is improved and increased, the body can rapidly absorb the drug, inflammation and oxidative stress can be regulated, and gastric ulcer can be resisted.

This invention belongs to the technical field of plant extract nanoemulsion preparation. To address the current limited research on flavonoids in jujube seed, particularly regarding the extraction, separation, and purification of total flavonoids from jujube seed, this invention provides a jujube seed total flavonoid nanoemulsion, its preparation method, and applications. The process involves extracting fatty oil from jujube seed, enzymatically hydrolyzing jujube seed powder, fermenting the jujube seed enzymatic hydrolysate, extracting total flavonoids, purifying the total flavonoids, and preparing the nanoemulsion using a self-emulsification method. The resulting jujube seed total flavonoid nanoemulsion exhibits high purity, a simple process, and is environmentally friendly and safe. It shows promising applications in the preparation of drugs to improve insomnia, depression, and anxiety. It provides excellent encapsulation and delivery capabilities, protecting the total flavonoids from hydrolytic enzymes, gastrointestinal pH, and other environmental conditions, promoting drug absorption, and improving drug bioavailability and brain penetration. It easily crosses intestinal intercellular spaces and the epithelial barrier, increasing the cellular uptake rate of jujube seed total flavonoids and enhancing the brain targeting and effectiveness of in vivo drug administration.

This invention belongs to the field of thin-layer chromatography (TLC) identification technology for traditional Chinese medicine, and specifically relates to a rapid TLC identification method and application for American ginseng and ginseng. The TLC identification method includes the following steps: taking a test sample, adding a solvent, sonicating, and taking the supernatant as the test solution; taking American ginseng and ginseng reference materials, adding solvents respectively, sonicating, and taking the supernatant as American ginseng reference material solutions and ginseng reference material solutions; taking ginsenoside Rg1, ginsenoside Rf, ginsenoside Re, ginsenoside Rd, and pseudoginsenoside F11 reference standards, adding solvents, mixing, and obtaining reference solution; finally, performing TLC analysis and result determination on the test solution, reference material solution, and reference solution. This invention is simple to operate, highly efficient and rapid, has good repeatability and high accuracy, and is low in toxicity and durable, and can simultaneously detect adulteration, substitution, and confusion in American ginseng and ginseng.

The invention relates to a rapid pesticide residue screening method based on an optimized electronic nose array. The rapid pesticide residue screening method comprises the following steps: selecting a plurality of gas sensors made of different sensitive materials to form a basic sensor group, and performing array arrangement optimization; grading the to-be-detected agricultural product sample; synchronously collecting resistance change signals and response peak value occurrence time of the sensor in a specified time period; performing baseline correction on the dynamic response data, and then removing environmental interference noise; screening out specified key feature parameters; dividing the screened key feature parameters into a training set, a verification set and a final feature set according to a specified proportion, and performing training optimization verification on a fusion model of the support vector machine and the random forest; inputting the final feature set into the optimized screening model, and outputting a positive / negative judgment result and confidence; and respective processing is carried out according to the division of the confidence. Through sensor array optimization, pretreatment, multi-dimensional data preprocessing and fusion model construction, rapid and accurate screening of pesticide residues is realized.

The utility model discloses a seaweed extracting and stirring device with a soaking structure, which comprises a box body, an arc-shaped seat is fixedly connected in the box body, a driving motor is fixedly mounted at the center end of the bottom of the arc-shaped seat, the output end of the driving motor penetrates through the arc-shaped seat to be in transmission connection with a rotating rod, and the top of the rotating rod is fixedly connected with a mounting seat. According to the seaweed extracting and stirring device with the soaking structure, a squeezing plate is stretched through the electric telescopic rod, so that a brush on the periphery of the squeezing plate is tightly attached to the inner wall of the centrifugal cylinder, the centrifugal cylinder is arranged at the top of the centrifugal cylinder, and the soaking structure is formed. The seaweed at the lower end of the extrusion plate is subjected to reciprocating filter pressing, so that the seaweed can be fully extruded, the extraction efficiency is effectively improved, the extraction time is greatly shortened, and in the rotating process of the centrifugal barrel, the extrusion plate cleans the inner wall of the centrifugal barrel to prevent blockage from affecting the seaweed extraction efficiency.

The invention relates to the technical field of health-care products, in particular to an inula flower weight-losing and lipid-lowering capsule and a preparation method thereof. The inula flower weight-losing and lipid-lowering capsule comprises a capsule shell and a content thereof, the content is prepared by compounding inula flower lactone and L-carnitine-L-tartrate according to the mass ratio of (2 to 4): 1; the inula flower is extracted by adopting an ultrasonic-microwave synergistic extraction technology, and the dissolution rate and the extraction efficiency of active ingredients can be remarkably improved through mutual cooperation of the mechanical crushing effect of ultrasonic waves and the instantaneous heating effect of microwaves; furthermore, the purity of the inula flower lactone can be effectively improved by virtue of petroleum ether-ethyl acetate liquid-liquid extraction in combination with a three-stage column chromatography purification process of silica gel column chromatography-passing through a silica gel column-MCI column; the capsule product prepared by the invention not only has good weight-losing and lipid-lowering effects, but also has no side effect and higher safety, and is suitable for long-term administration.

This invention relates to a whitening extract from Camellia yunnanensis, its preparation method, and its applications, belonging to the field of plant extract preparation and cosmetic technology. The extraction method includes: preparing a eutectic solvent by mixing choline chloride and citric acid in a molar ratio of 1:1 to 1:5, and adjusting the water content to 40%–80%; mixing Camellia yunnanensis raw material powder with the eutectic solvent at a material-to-liquid ratio of 1:10–30 (g / mL), and performing ultrasound-assisted extraction. This extract can be used to prepare cosmetics or topical skin preparations with whitening, brightening, antioxidant, or pigmentation-improving effects, as well as tyrosinase activity inhibitors and α-amylase activity inhibitors. This invention provides a green and efficient method for extracting the whitening active ingredients from Camellia yunnanensis.