560results about How to "Low extraction temperature" patented technology

The invention discloses equipment and a method for extracting biologically active ingredients from subcritical fluid, aims to solve the problems of low extraction efficiency and the like existing in the aspects of biologically active ingredient separation technology in the prior art and provides a set of subcritical equipment which comprises an extracting agent supply system, an entrainer supply system, an extraction system, a separation system, a solvent recycling system, a desolvation system, a heat supply system, a computer control system and the like, has high automatic control degree and is used for extracting the biologically active ingredients. Simultaneously, the invention also provides a new technological method for extracting the biologically active ingredients by adopting a subcritical extraction process. The method has the advantage of relatively low cost on the conventional extraction of an organic solvent, and the equipment has the characteristics of no solvent residue, no pollution, high bioactivity and the like in a product obtained by supercritical CO2 extraction technology and has the advantages of low investment on production equipment, high production efficiency within unit time, low energy consumption, flexible operation, high degree of automation and the like.

A method of extraction of fuels, organic pollutants, and elements from Methane hydrate deposits, shale seams and the soil is described which freezes the zone and heats the center carrying the fuel, chemicals and water in these deposits and seams from where they are found, be it deep in the sea or on land, and carries them into the condensing unit in inert Nitrogen gas. Required drilling on the surface or sea bottom includes a main shaft and with auxiliary narrow drillings widely spaced from the shaft. The extraction zone, which is first cooled to brittle cold using the evaporation of Liquid Nitrogen and fractured with vibrations, is heated to the highest temperature of the hydrocarbon fraction desired to be extracted. The evaporating hydrocarbons are extracted in a Nitrogen gas carrier, a recognized fire suppressant (NFPA Code 2000). To speed the extraction rate, tonal input from two or more sounding units vibrates the seam structure freeing the evaporated hydrocarbons allowing more rapid escape into the shaft. To prevent air loss in aquifers, ice barriers seal the zone periphery. These hydrocarbons are separated into the hydrocarbons fractions, into fuel fractions as heating oil, kerosene, gasoline, ethers, and fuel gas including methane, Argon / Oxygen and rare gas segments, or, if pollutants, into the separate chemicals by boiling point. The thermal gradient of the extraction pipe is implemented by sourcing the Nitrogen from Liquid Nitrogen and bundling those pipes with the extraction pipe condensing its contents by hydrocarbon fractions into vessels and gas drums depending on boiling points of fractions. Water is separated from the gasoline segment and purified first by separation and then by freezing. The extraction of deep deposits layer the extraction zones as well as work neighboring extraction zones covering many acres. Fuel gases can be liquefied or burned in an on-site electric generating plant.

The invention relates to a method for preparing tobacco extract and application thereof. The method for preparing the tobacco extract uses tobacco as a raw material to prepare the tobacco extract through the steps of enzymolysis, ultrasonic extraction, filtration, chromatography column separation and concentration under reduced pressure; and the tobacco extract is dissolved by 80 percent ethanol and sprayed into tobacco shreds by adopting an atomizing mode. The method using enzymolysis technology and ultrasonic extraction and combining the chromatography separation has the advantages of low extraction temperature, short time, little using amount of a solvent, full extraction and high raw material utilization rate; because the extraction temperature is low, the damage to thermal-sensitive fragrant substances is reduced, fragrant components of the tobacco self is furthest kept, and simultaneously the substances influencing the taste and mouthfeel are removed; and the method is simple, the equipment is easy to operate, and no pollution is produced.

The invention discloses a preparation method of ganoderma lucidum polysaccharide with high yield, which comprises the following steps: firstly, crushing ganoderma lucidum fruiting bodies into ganoderma lucidum powder, then sequentially extracting the ganoderma lucidum powder by adopting a microwave-assisted hot water extraction method and an ultrasonic-assisted hot water extraction method, and carrying out concentration, impurity removal, concentration, alcohol precipitation and drying on the obtained extracting solution to obtain water-soluble ganoderma lucidum polysaccharide; and extracting the ganoderma lucidum residues by adopting an alkali extraction method, and carrying out neutralization, dialysis, concentration, impurity removal, alcohol precipitation and drying on the obtained extracting solution to obtain alkali-soluble ganoderma lucidum polysaccharide. The method is used for extracting the ganoderma lucidum polysaccharide by combining microwave heating action and ultrasonic cavitation and extracting the alkali-soluble polysaccharide in the ganoderma lucidum by utilizing the alkali extraction method, thereby reducing the loss of the ganoderma lucidum polysaccharide; and the prepared ganoderma lucidum polysaccharide has the characteristics of high production yield, strong immunological activity and the like.

The invention relates to a dendrobium candidum instant powder and a preparation method of various related formulations thereof. The preparation method of the dendrobium candidum instant powder comprises the steps of: combining low-temperature extract of the dendrobium candidum with raw materials such as maltodextrin and dietary fiber, and the like, wherein the low-temperature extract of the dendrobium candidum is prepared by modern extraction and separation technologies such vacuum exploding, reverse film permeating, freeze drying and spray drying, and the like; and further preparing into formulations such as granules, effervescent tablets, capsules and oral liquid, etc. The invention improves the extraction efficiency of the dendrobium candidum, maximally guarantees the bioavailability of the dendrobium candidum, remains the primary smell of the dendrobium candidum, and leads the dendrobium candidum is conveniently taken.

The invention relates to a treatment method of oily sludge, which is particularly suitable for oily sludge generated during the sewage treatment process of a refinery plant. The method comprises the following steps: after centrifugal dewatering, the oily sludge is dehydrated through rotary dehydration equipment under the control of a certain negative pressure and a certain temperature, so as to destroy the water, oil and solid stable system in the oily sludge; parts of oil and water in the oily sludge are distilled out; the coke generated after dehydration is extracted with a solvent; after extraction, the material undergoes the solid-liquid separation; the separated liquid phase is delivered to a delayed coking device; the separated solid phase is dehydrated to form the residues that meet the discharge standards for solids; and the wastewater generated during the process is biochemically treated and then discharged after reaching the discharge standards. The invention is mainly characterized in that the sludge treatment process is short, the speeds and the efficiencies of sludge dehydration and extraction are high, the effect is good, the operational condition is moderate, the energy consumption is reduced, the oily sludge treatment effect is good, and the operating maintenance of the equipment is simple.

The invention discloses a preparation process for extracting active ingredient of natural plant by supersonic, which comprises the following steps: firstly, cleaning and removing dust; secondly, crushing; thirdly, steeping: placing the crushed natural plant raw material to be extracted into a material mixing tank with a mixer for continuously mixing, adding steeping fluid in the natural plant rawmaterial to be extracted in the material mixing tank and obtaining material mixture after mixing and stirring; fourthly, supersonically extracting: passing the material mixture circularly continuously through the inner part of a supersonic extraction device by a circulation pipe between the material mixing tank and the supersonic extraction device and performing the continuous, circulated and supersonic extraction; fifthly, filtering, sixthly, reducing and concentrating. The invention saves time and labor, can obviously improve the product quality and the product yield, has short extraction time, high extraction efficiency, and low temperature during the extraction without heating, and prevents effective ingredient being damaged when heating at high temperature.

The invention relates to a method for extracting, separating and purifying a functionality active component Astragaloside IV from a common used traditional Chinese medicine Astragalus mongholicus, and aims to provide a simple, safe, economic and effective method for extracting, separating and purifying the Astragaloside IV from the Astragalus mongholicus with high purity. The adopted technical scheme is as follows: taking traditional Chinese medicine Astragalus mongholicus as a raw material; and adopting a series of original and efficient technologies for extracting, separation and purifying such as homogenate extraction-mixing enzyme induction biotransformation technology, negative pressure cavitation suspension extraction technology, saponin derivant hydrolysis converting technology, liquid-liquid extraction technology, macroporous absorption resin enrichment technology, normal phase silica gel medium pressure column chromatography technology and devitrification at a low temperature, recrystallization technology and the like to obtain the Astragaloside IV with high purity and yield, wherein the yield thereof can be more than 0.08% and the purity can be more than 95%. The raw material used in the invention is the common used traditional Chinese medicine Astragalus mongholicus, and has abundant resources; the production process of the Astragaloside IV is simple and practicable; the target compound has high yield and purity; and the method is suitable for the industry production and application, has high additional value and excellent market application prospective.

The invention discloses a preparation method of a cannabinol compound. The method comprises the following steps: screening industrial cannabis plant materials; drying and carrying out ultra-micro pulverization; putting the materials into an ultrasonic extraction device with a stirring function; adding a weak-polar or non-polar organic solvent and weak acid, and carrying out ultrasonic assisted extraction; filtering and adding active carbon in filtrate; filtering and evaporating to remove the solvent so as to obtain extractum of industrial cannabis extract; sufficiently dissolving the extractum by adopting a high-polar organic solvent; freeing, sealing, filtering and evaporating to remove the solvent, so as to obtain a primary product of the industrial cannabis extract; stirring the primary product and slowly adding an alkali solution; centrifuging and filtering; slowly adding an acid solution into filtrate; separating to obtain an industrial cannabis extract product containing the rich cannabinol compound. The method disclosed by the invention has the advantages of high extraction efficiency, low cost, few product impurities, small pollution and easiness of being industrially realized.

The invention relates to a preparation method of a jujube extract and an application thereof, belonging to the technical field of separation and extraction of active ingredients from natural products. The preparation method comprises the following steps: taking raw materials, namely red jujubes and zizyphus jujubes, removing kernels, crushing, mixing, adding cellulase for enzymolysis, increasing the temperature, performing the enzymolysis while stirring, then performing microwave extraction, centrifugation and adsorption elution, and then concentrating to get a product, namely the jujube extract, which is used as an aroma additive for cut tobacco. According to the preparation method disclosed by the invention, the enzymolysis and the microwave extraction methods are adopted, so that the extraction temperature is reduced, the extraction time is shortened, and the extraction effect is improved; the jujube extract is used as a spice for the tobacco and can enable tobacco aroma to be thick and permeable, cover miscellaneous gas and improve the quality of a tobacco product; and furthermore, the method has the advantages of uncomplicated equipment, easiness in operation and no pollution.

The invention relates to a method for extracting high-purity tea saponin from an oil-tea-cake by decompression boiling. In the method, a degreased oil-tea-cake is used as a raw material, hydrous ethanol is used as an extraction solvent, and decompression boiling is adopted for extraction; after being filtered, extract passes through a ceramic membrane; ethanol is recovered from the tea saponin solution passing through the ceramic membrane, and the tea saponin solution is concentrated; and the concentrated solution is adsorbed through macroporous resin and chromatographically separated by medium and low pressure columns to prepare the high-purity tea saponin. The tea saponin prepared by adopting the technology has light color and high purity of over 95 percent, and the method becomes a novel technology for producing tea saponin product in the industry.

The invention discloses a process for preparing edible camellia oil, which comprises the steps of removing hulls of camellia oleosa seeds, drying, disintegrating, cooking camellia oleosa seed, and extracting and refining camellia oil. The invention adopts advanced hypercritical CO 2 extraction technology, changes traditional camellia process technology, increases the quality of oil, reduces refining procedures, decreases refining loss of oil, increases oil yield rate, and reduces the losses of biologically active substance and nutrition components in the process of refining, increases the contents of active substances such as VE in the camellia oil, squalene and the like, and increases the quality and the health function of the finished product of camellia oil.

The invention discloses a method for extracting betulin from birch barks, comprising the following steps: firstly, crushed birch barks are added into an ethanol water solution, undergo reflux extraction under auxiliary processing of ultrasonic waves, and then are filtrated for removal of residue, and an extract is obtained; secondly, solid powder is separated out after decompression and concentration of the extract, and then dried to the constant weight so as to obtain betulin coarse products; and thirdly, the betulin coarse products are added into an organic solvent, undergo ultrasonic treatment and then stand, crystals are separated out, and the betulin is obtained after the separated crystals are dried to the constant weight. The method has a simple operation flow, short extraction time, low production cost and high safety, and provides a better method and a better platform for further development and utilization of natural products.

The invention discloses a method and an apparatus for extracting effective components of plants by ultrasonic cooperating with an electrostatic field. The apparatus for extracting effective components of plants by ultrasonic cooperating with an electrostatic field comprises an extraction tank, and is characterized in that is the extraction tank is a rinse tank type cylindrical sound reactor in which a central electrode is arranged, the anode and the cathode of a static generator are electrically connected with the central electrode through a control switch, and the grounded terminal of the static generator is electrically connected with the side wall of the extraction tank. The invention has the advantages of realizing extraction of polar components and nonpolar components, having high extraction rate, short period of extraction and low extraction temperature, avoiding using an entrainer or reducing the amount, and reducing the pollution of the residual of the extractive.

The invention provides a method for extracting dihydromyricetin and polysaccharide in vine tea at a relatively low temperature of 40-60 DEG C. The method for extracting dihydromyricetin and polysaccharide in vine tea is realized through the following technological means and technological processes: drying stems and leaves of vine tea, grinding, sieving, carrying out treatment for a certain time at a certain temperature and a certain ultrasonic power while water is taken as a solvent, carrying out natural cooling, then standing for 12-24 hours to crystallize and precipitate dihydromyricetin, centrifuging a feed liquid mixture, concentrating the obtained supernate, carrying out ethanol precipitation, washing and drying, so as to obtain crude polysaccharide of the vine tea; adding boiling water into residue after centrifugation, stirring, and insulating for about 10 minutes so as to ensure that crystallized dihydromyricetin is redissolved, then centrifuging immediately, and after the supernate is cooled, carrying out standing for 12-24 hours at 4 DEG C so as to ensure that dihydromyricetin is crystallized; centrifuging, and drying precipitate, so that dihydromyricetin crude extract is obtained. By adopting the method for extracting dihydromyricetin and polysaccharide in vine tea, the solubilizing effect of ultrasonic wave and the cell disruption effect are utilized for realizing rapid, efficient and synchronous extraction of two active substances in the vine tea at a low temperature, the yield of the dihydromyricetin and polysaccharide products is high, properties of the crude extract are good, and subsequent purification steps are effectively reduced, so that the energy consumption and the cost are reduced.

The invention relates to a method for extracting tea seed soil and tea saponin through microwave reinforcement in the same process. The method comprises the following steps: husking and crushing tea seeds, carrying out microwave irradiation for a period of time, filling into an extraction kettle of a supercritical fluid extraction device, extracting tea seed powder by utilizing supercritical CO2 fluid, and then discharging extraction liquor from a separation kettle to obtain tea seed oil; and then adding low alcohol-water solution in a certain proportion through an entrainer feed inlet of the supercritical fluid extraction device, changing the extraction temperature and extraction pressure, extracting for a period of time by reutilizing the supercritical CO2 fluid, and then discharging the extraction liquid from the separation kettle to obtain tea saponin alcohol solution. The method combines the advantages of microwave pretreatment technology and supercritical CO2 fluid extraction technology, high-quality tea seed oil and high-activity tea saponin can be obtained sequentially in the same one supercritical CO2 fluid extraction device, the production technique flow can be simplified, and the production efficiency can be improved.

The invention discloses a method for extracting stevioside from stevia rebaudiana leaves. The method comprises the following steps of washing, soaking, drying stevia rebaudiana leaves and sieving to obtain stevia rebaudiana leaf powder; mixing the stevia rebaudiana leaf powder with water, adding complex enzyme, adjusting the pH value and heating by microwave, extracting and filtering by ultrasound to obtain an extracting solution and a filter residue; mixing the filter residue with diethyl ether, performing centrifugal separation to obtain a total extract; mixing the total extract with a ferric trichloride solution and a calcium hydroxide solution; after performing heating, heat preservation and cooling, mixing with a sodium hydroxide solution; after adjusting the pH value, mixing with an aluminum sulfate solution, after stirring, performing supercritical extraction to obtain an extract liquor; using AB-8 type macroporous resin to adsorb the extract liquor; performing elution, distillation, concentration and drying, so as to obtain a stevioside crude product; putting the stevioside crude product into water; ultrasonically dissolving and adding active aluminium oxide for adsorbing; and then filtering, washing, subsiding, combining filter liquor and washing liquor, and concentrating and drying.

The invention provides a preparation method of a cigarette coffee extract. The preparation method comprises the following steps of adding coffee beans into a baking machine, baking for 10 to 15min at the temperature of 160 to 220 DEG C, crushing, adding ethanol with the concentration of 40% to 70%, soaking, carrying out ultrasonic extraction for 1 to 3 times, concentrating extracting liquid by vacuum at low temperature, further filtering by ceramic film equipment with hole diameter of 30 to 50nm, and concentrating, so as to obtain the cigarette coffee extract. The preparation method has the advantages that the coffee extract can be extracted and separated at low temperature; the original flavor of the extract is furthest maintained; the smoking evaluation effect of the coffee extract in cigarette is improved; compared with a common coffee extract, the coordination between the prepared extract and the cigarette flavor is good, rich fragrance is realized, the fragrance quality is high, the irritation is low, and the residual flavor is clean.

A microwave extractor is composed of a microwave heater with hollow cavity and microwave magnetron, and a solid-liquid delivering unit passing through said hollow cavity of microwave heater and with solid inlet, extracting liquid inlet and outlet and solid outlet.

The invention belongs to the field of natural plant extraction and application, and particularly relates to a chive seed extract, a preparation method and application thereof to cigarette production. The extract is produced by the following method: chive seeds, as the raw material, are weeded, dried and shattered; with ethanol as the extractant or the entrainer, the raw material is processed through heating circumfluence or carbon dioxide supercritical extraction to get an ethanol extracting solution; the ethanol extracting solution is concentrated to get the chive seed extract. Added to cigarettes, the chive seed extract of the invention can significantly improve the sensory quality of the cigarettes and, in addition, has some potential effect on reducing the cigarette harm and enriching the cigarette function.

The invention relates to a method for extracting an antioxidant substance used as an antioxidant in the branches, barks and leaves of eucommia bark leaved forest from a eucommia bark leaved forest cultivation mode. The method comprises the technical schemes of: crushing a certain amount of branches, barks and dried leaves in the eucommia bark leaved forest mode; adding the crushed mixture in an ultrasonic extractor; adding a solvent and leaching for two times; and filtering the solvent, reducing the pressure and condensing to obtain extract or carrying out vacuum freezing and drying to obtain a powdery product. The ultrasonic extraction method has simple process and less investment, is suitable for large-scale production and lays a foundation for developing the antioxidant functional food. The prepared eucommia bark antioxidant active substance product is applied to the medicines, health-care products, food antioxidants, feed addictives and other industries; and extract residues can be used for continuously extracting eucommia rubber so as to realize the comprehensive utilization.

The invention discloses a preparation method of high-activity astragalus polysaccharide. Further, the invention relates to an astragalus polysaccharide containing pharmaceutical composition prepared from the astragalus polysaccharide. A preparation method of the astragalus polysaccharide comprises the following steps of: crushing Radix Astragali medicinal material, immersing it into a CaO aqueous solution, and successively carrying out ultrasonic extraction, cryoprecipitation, centrifugation, microfiltration, ultrafiltration, reverse osmosis and spray drying to obtain the astragalus polysaccharide. The extracted astragalus polysaccharide provided by the invention has high activity and high yield. In addition, the preparation method has a simple technology, is time-saving, energy-saving, highly efficient and simple, and is easy for popularization, development and application.

The invention provides a method for highly efficiently extracting protein from walnut dreg. The method comprises the steps that: a, walnut dreg is crushed into walnut dreg powder; b, according to a ratio that n-hexane:succinic diisooctyl sodium sulfonate=1mL:0.04-0.10g, n-hexane is dissolved in succinic diisooctyl sodium sulfonate, such that a mixed solution is obtained; the mixed solution is mixed with an electrolyte buffering solution, such that a reverse micelle solution is obtained; c, the walnut dreg powder in the step a and the reverse micelle solution obtained in the step b are mixed according to a ratio that reverse micelle solution:walnut dreg powder=1mL:0.02-0.10g; the mixture is subjected to stirring or microwave and enzyme method assisted extraction; centrifugation is carried out, and a supernatant is a protein pre-extraction liquid; d, the protein pre-extraction liquid obtained in the step c and the electrolyte buffering solution is mixed according to a volume ratio that protein pre-extraction liquid:electrolyte buffering solution=1:0.5-1:2; the mixture is subjected to stirring or microwave-assisted extraction; centrifugation is carried out, and lower-layer clear liquid is protein post-extraction liquid; and e, the protein post-extraction liquid obtained in the step d is subjected to chromatography column desalting, such that a product is obtained.

The invention discloses an additive for improving quality of cut stem, as well as a preparation method, device and application thereof. The method comprises the following steps of: crushing dry tea flower to 20 meshes, putting into a subcritical extraction device, adding water, controlling the material-liquid ratio to be 20-40ml / g, controlling the extraction temperature at 100-120 DEG C, controlling the extraction pressure to be 7-15Mpa, extracting, then adding NaCl into an extraction solution, fully stirring and dissolving, adding CH2Cl2 into the extraction solution according to the proportion of 1: 1, fully mixing, standing for stratification, separating liquid, collecting a CH2Cl2 layer, adding anhydrous sodium sulfate, filtering, collecting filtrate, and concentrating to prepare essential oil of the tea flower, which is used as the additive for improving the quality of the cut stem. The essential oil of the tea flower according to the invention has the advantages of high extraction rate, low energy consumption, clean process, simple process and great industrial application prospects. In addition, by adding the essential oil of the tea flower, which is obtained by the preparation method, into the cut stem, miscellaneous gas of the cut stem can be effectively covered, dry tingling of smoke gas can be reduced, smoke flavor is coordinated, and the comprehensive quality of the cut stem is obviously improved.

The invention relates to a preparation method of notoginseng leaf total saponins, and belongs to the technical field of natural medicine extraction. The preparation method comprises the following steps: adding a solvent to notoginseng leaves, carrying out ultrasonic wave countercurrent continuous extraction, filtering, collecting filtrate, concentrating to obtain clear paste, adding a natural clarifying agent for clarification, centrifuging, adding ethyl alcohol to a clear solution to ensure that the ethyl alcohol content of the clear solution is 30-50%, and carrying out alcohol precipitation; and purifying the clear solution subjected to alcohol precipitation by using a desugaring resin column, eluting by using ethyl alcohols with different concentrations, decolorizing by using anion exchange resin after desugaring, finally concentrating, and carrying out microwave drying so as to obtain the notoginseng leaf total saponins. The preparation method has the advantages that the obtained notoginseng leaf total saponins are off-white, the texture of the powder is loose, the yield of total glycosides is above 8%, the content of the total glycosides is not lower than 90% (UV-ultraviolet), the obtained notoginseng leaf total saponins mainly comprise Rb3, Rc, Fc, Fa and the like, and the content of the Rb3 is greater than or equal to 40% (HPLC- High Performance Liquid Chromatography); the process is simple, the realization of industrialization is facilitated, and the product quality is substantially improved.

The invention discloses a method for extracting paeonol by use of the CO2 supercritical extraction technology. The method comprises the following steps: washing cortex moutan, drying, grinding, seiving and performing ultrasonic treatment; adding an appropriate amount of beta-cyclodextrin, granulating and drying; uniformly mixing emu oil serving as an entrainer with the raw material powder; feeding the granulated particles into a supercritical extraction kettle for CO2 supercritical extraction; refrigerating the paeonol extract liquid in the supercritical extraction kettle and taking out to obtain an automatic-layering extract, wherein the upper layer is light yellow liquid, and the lower layer is light red brown solid; and separating the liquid to obtain high-purity active monomer paeonol. The method disclosed by the invention has the advantages of simple extraction process, high extraction rate, low extraction temperature, short extraction time and the like; the yield of paeonol can exceed 1.4%; and moreover, CO2 is non-toxic and residue-free, the energy consumption is reduced, cyclic use can be realized, the shortcomings of the traditional extraction method that the paeonol is easily volatilized and the yield is low are overcome, and the application prospect is broad.

The invention discloses a method for extracting steviol glycosides from stevia rebaudiana leaves by microwave and ultrasonic combination. The method includes the following steps: rinsing stevia leaves, immersing in anhydrous ethanol, drying, crushing and sieving to obtain stevia leaf powder; uniformly mixing the stevia leaf powder, water and compound enzyme to adjust the pH value, then heating with microwaves, insulating and soaking, heating to obtain the extract and residue after ultrasonic treatment; stirring and homogenizing the residue and ether and then separating centrifugally, and combining the supernatant and the extract to obtain the mixture extract; mixing the ferric chloride solution, the calcium hydroxide solution, the polyacrylamide solution and the mixture extract to obtain the mixed solution, mixing the mixed solution with the aluminum sulfate solution uniformly, and adjusting the pH value to obtain the extract solution by supercritical fluid extraction; adsorbing the extraction solution with macroporous resin, rinsing, depressurized-distilling, concentrating and drying to obtain crude stevia glycoside; adding the crude stevia glycoside into water, and then adding attapulgite after the ultrasonic treatment; standing, centrifuging, concentrating and drying after the pH value is adjusted.

The invention belongs to the field of cosmetics and in particular relates to a gynura procumbens use-activated multiactive natural compound mask and a preparation method thereof. The gynura procumbens use-activated multiactive natural compound mask is characterized by being prepared from the following raw materials in percentage by weight: 93-96% of gynura procumbens extract, 0.5-1.5% of camellia oil, 2.5-5% of abehnoschl manihot honey and 0.3-1% of rosemary. The gynura procumbens extract is taken as a main component, and a small amount of functional plant essence auxiliary material is added. The gynura procumbens use-activated multiactive natural compound mask can realize the moisturizing, whitening, antiwrinkling, antisepsis and anti-inflammation, lifting and tightening, spot solution and anti-acne effects on human skin, no artificial additive is added, and a preparation method is simple.

A process for extracting high-quality and high-purity Lingxiang herb oil includes such steps as extracting by supercritical CO2 fluid at 35 deg.C and 12 MPa for 1.5 hr, low-temp freeze dewaxing at -15- -20 deg.C, and high-speed centrifugal separation at 45 deg.C and 5 MPa. Its advantages are high output rate increased by 5 times high quality, no residual solvent, and special fragrance.