38results about How to "Improve extraction rate" patented technology

The invention relates to a method for preparing danshensu which comprises: getting extract liquid from the water or alcohol with danshensu and danshensu precursors using danshen as the materials, inverting the danshensu precursors of the said extract liquid into danshensu using diluted alkali, super filtering the macromolecular substance of the said extract liquid after conversion using a hyperfiltration membrane, extracting the danshensu from the said extract liquid after hyperfiltration, and separating the said extraction using the normal phase chromatography to get the danshensu.

The invention relates to a method for extracting iodine from iodine-containing phosphorus ore, which is characterized by comprising the following steps: (1) an oxidizing agent prepared by one of chlorine or carbon tetrachloride or hydrogen peroxide is directly added to a phosphoric acid transporting pipeline; (2) phosphoric acid enters an extracting tower by directly entering the tower; (3) extracting gas adopts a tangential gas entering mode to lead diluted acid to generate rotational flows; and (4) a bubble type sieve plate is selected to lead the extracting gas and the diluted acid to be sufficiently contacted so as to extract iodine molecules in the phosphoric acid. The method sets an operation index aiming at the characteristic of iodine in the phosphorus ore in oxidizing and extracting processes and the characteristic of impurities in the diluted acid, the iodine extracting rate of the phosphorus ore can be effectively increased by 70-80 percent by using the method and the operation index and matching with the phosphorus ore extracting tower invented by an inventor, the operation cycle of the extracting tower is effectively prolonged in order to lead the extracting tower to continuously and stably operate for 200-300 hours, and the cleaning operation of the sieve plate is reduced.

The invention relates to a technology for regenerating alkaline etching waste liquid and recovering copper in a PCB. Along with the etching process, the concentration of copper ions in the etching liquid is increased until the etching liquid can not be used and becomes waste liquid. The technology adopts the following four fully closed cycles which are mutually nested: an etching liquid cycle, anextracting agent cycle, a stripping agent cycle and an ammonia gas cycle; and four main materials interact but are recycled continuously. The technical method comprises the following steps: using an extracting agent to extract partial copper from the etching waste liquid; after gravity separation, air flotation separation and fiber degreasing, controlling and adjusting the concentration of copperions to achieve the level of fresh etching liquid through the specific gravity; using a water injector to add liquid ammonia, and using pH to automatically control and adjust the ammonia concentration; and after adjusting other components, recycling for production. The extracting agent containing copper is processed by back extraction by using sulfuric acid, the extracting agent returns to the extracting section for being reused after separation, and the copper sulfate is electrolyzed into copper to be sold. The whole line recycles various resources to achieve the purposes of waste utilizationand resource recovery, and no wastes are discharged.

The invention discloses a method for extracting vitexin and trigonelline from fenugreek. The method comprises the following steps of obtaining a vitexin-and-trigonelline-containing water extract with the yield of 20%-35% from a certain quantity of fenugreek seeds and fenugreek leaves; adding hydrochloric acid into the obtained water extract, adjusting the pH value of a solution to be 0.1-0.5, hydrolyzing for 1-2 hours, fully separating out crystals A, and re-crystallizing by adopting a 50%-90% ethanol solution to obtain crystals a; dissolving the crystals a, adding a 95% ethanol solution, separating out vitexin crystals, and spray-drying the solution in which the crystals A are separated out to obtain trigonelline. According to the method, effective traditional Chinese medicine ingredients in the fenugreek are fully dissolved in the water solution at first and then vitexin and trigonelline are extracted, so that the extraction rate of vitexin and trigonelline is greatly increased and the extraction purity of vitexin and trigonelline is greatly improved.

The invention belongs to the field of metallurgy and particularly relates to a method of separating and recovering zinc from electroplating sludge, comprising the steps of 1, performing leaching treatment: leaching the electroplating sludge with an organic acid, and carrying out solid-liquid separation to obtain leaching residue and leachate; 2, removing iron and chromium by neutralizing: adding a neutralizing agent into the leachate obtained in step 1, and carrying out solid-liquid separation to obtain ferric hydroxide precipitate, chromic hydroxide precipitate and leachate; 3, performing extracting: mixing P204, tributyl phosphate, an organic extracting agent N1923 and a solvent oil to obtain a mixed extracting agent, extracting the leachate generated in step 2, with the mixed extracting agent, and adding an organic acid to carry out re-extraction to obtain raffinate and zinc-containing re-extracted liquor, namely purified liquor containing zinc sulfate. The method has the advantages that the zinc may be extracted and separated from sulfuric acid leachate of the electroplating sludge so that the zinc is comprehensively recycled, an extracting process needs no caustic soda liquid for saponification, recycling cost is decreased, and economic benefit is increased.

The invention discloses an extraction method of wood essential oil. The extraction method comprises the following steps: cutting Japan cypress or yellow cedar into short wood pieces to perform pretreatment, drying and crushing after pretreatment, and performing reduced pressure distillation after crushing; separating the liquid, obtained by the reduced pressure distillation, by virtue of an oil-water separator to obtain an oil phase and a water phase respectively so as to obtain initial oil; drying the fine wood four extracted by the reduced pressure distillation, and putting the dried wood flour into a supercritical carbon dioxide extraction device to extract essential oil; and combining the essential oil obtained by the first two steps to obtain total essential oil. According to the method disclosed by the invention, wood is dried and crushed into fine powder after pretreatment, the initial oil is obtained by virtue of reduced pressure distillation, and residues are subjected to secondary extraction by using a supercritical carbon dioxide process, so that the extraction rate is improved, and cypress essential oil with higher purity is obtained.

The invention belongs to the technical field of the manufacturing of reconstituted tobaccos in a papermaking method, and particularly relates to a method for processing tobacco pulp. In the method, the tobacco pulp obtained by extracting and pulp milling is subjected to pulp washing under vacuum before pulping and papermaking. By the method, the processing degree of slurry is improved, the extraction rate of raw materials and the yield of products are improved, and the production efficiency, product quality and energy utilization ratio are improved simultaneously.

The invention discloses a method for extracting pitaya peel pigment by supercritical CO2 fluid, which comprises the following steps: A. taking pitaya peel, crushing and drying the peel to obtain pitaya peel powder; B. performing supercritical CO2 fluid extraction of the pitaya peel powder, adding polar entrainer during the extraction to obtain a pitaya peel pigment solution and extract, collecting the pitaya peel pigment solution to keep in reserve; C. adding 95% ethanol into the extract to obtain an extract ethanol solution, performing ultrasonic enhancement of the extract ethanol solution to obtain the pitaya peel pigment solution; D. mixing the pitaya peel pigment solutions obtained in B and C, and performing reduced pressure distillation and rotary evaporation to obtain the pitaya peel pigment. With the method of the invention, high-concentration pitaya peel pigment can be obtained, and the method of the invention is suitable for large-scale production, and facilitates popularization and application.

The invention discloses a suspension point contact type supercritical extraction device. The invention belongs to the technical field of supercritical extraction. A hanging basket static extraction mode in a traditional extraction kettle can be abandoned; the deformation characteristic of an empty throwing material receiving film is utilized; contained materials are shaken and thrown in the air; apowdery material is promoted to keep a dispersed suspended state; then, supercritical fluid sequentially passes through a limited space to be in full contact with the materials; the extraction rate of effective substances is obviously improved; through the characteristics of the empty throwing material receiving film and the assisting action of an assisting hanging piece, on one hand, the material dispersion effect is improved, meanwhile, the posture can be changed by overturning, the material is in contact with the supercritical fluid, the materials are fully extracted, and extraction dead corners are not prone to occurring; on the other hand, the situation that the extraction effect is affected due to the static adhesion phenomenon of the powdery materials can be avoided; the one-way extraction rate of the materials can be greatly increased, and the extraction efficiency is greatly improved.

The invention relates to a supercritical water/supercritical carbon dioxide combined treatment method for arsenic-contaminated soil, and belongs to the technical field of soil remediation. The supercritical water/supercritical carbon dioxide combined treatment method comprises: placing arsenic-contaminated soil in a high-temperature and high-pressure reaction kettle I, adding a metal binder, introducing carbon dioxide gas, carrying out heating pressurizing to achieve the supercritical state of the carbon dioxide, and carrying out contact extraction for 15-120 min to obtain repaired soil and the extracted product, wherein the temperature of the carbon dioxide in the supercritical state is 40-80 DEGC, and the pressure is 10-45 MPa; and adding the extracted product, water and an excess oxidant to a high-temperature and high-pressure reaction kettle II, uniformly mixing to obtain a reaction system, carrying out heating pressurizing on the reaction system in the high-temperature and high-pressure reaction kettle II under a closed condition until the reaction system achieves a water supercritical state, and carrying out a reaction for 5-45 min to obtain the reaction product system, wherein the temperature of the supercritical state is 380-650 DEGC, and the pressure is 23-55 MPa. According to the present invention, arsenic is gently extracted by supercritical carbon dioxide so as to repair contaminated soil while recover the arsenic in the form of arsenic trioxide.

The invention discloses an interlayer conical cover dispersing component and a method for dispersing liquid phase. The dispersing component comprises an outer-layer conical cover and an inner-layer conical cover which have the same center shaft; an interlayer gap is formed between the conical cover and the conical pipe; the lower end of the gap is connected by a horizontal ring-shaped bottom plateand is sealed; the vertical section of the outer-layer conical cover is shaped like an isosceles triangle or an isosceles trapezoid; multiple rows of sieve pores are formed in the side wall of the outer-layer conical cover along different height, and the outer-layer conical cover has a fan-shaped sieve plate structure when being unfolded; the upper end and the lower end of the inner-layer conicalpipe are open to form liquid flow hole channels, and the height of the inner-layer conical pipe is less than that of the outer-layer conical cover; when the vertical section of the outer-layer conical cover is shaped like the isosceles trapezoid, the outer part of outer-layer conical cover is closed by a round top plate; and at least one sieve pore is formed in the round top plate. The interlayerconical cover dispersing component has the advantages of high operation flexibility, high mass transfer efficiency, stable and reliable extraction process and the like.

The invention discloses a gas chromatography sample thermal desorption and automatic sample injection device. The device comprises a miniature high-temperature heater, a sample tube, a nitrogen supply device, a heat insulation tube, an injection needle a and an injection needle b, wherein the sample tube is arranged in the miniature high-temperature heater, the nitrogen supply device is connected with the miniature high-temperature heater and communicated with the sample tube, the injection needle a and the injection needle b are connected to the two ends of the heat insulation tube respectively, and the injection needle a is inserted in the sample tube with the upper end opening closed. The device is a gas chromatography sample pretreatment device integrating extraction, purification and separation, it is not needed to modify matched gas chromatography at all, a sample obtained after thermal desorption is directly pressed into a vaporizing chamber, and thus chromatography sample injection analysis is performed. The device is easy and convenient to operate, high in extraction rate, good in reproducibility, small in sample use quantity, high in thermal desorption and sample injection speed, high in separation efficiency and suitable for analysis of high-boiling-point ingredients of trace solids and liquid samples.

The invention provides a separating and recycling method for thallium in a nickel-cobalt sulfate solution. The separating and recycling method includes the following steps that a), the nickel-cobalt sulfate solution, a pH adjusting agent and an oxidizing agent are mixed for carrying out an oxidation reaction, and a reaction mixed solution is obtained; b), the reaction mixed solution obtained in the step a) and chlorate salt are mixed, then an extracting solvent is adopted for quenching, and after two phases are separated, an organic phase including thallium and raffinate are obtained, whereinthe extracting solvent is composed of tertiary amine, tributyl phosphate and sulfonated kerosene; and c), ammonia water is adopted for the organic phase including thallium for back extraction, and after the two phases are separated, thallium-containing back extracting liquid and a lean organic phase are obtained. Compared with the prior art, the extracting solvent containing tertiary amine is adopted in a breakthrough manner for extracting thallium under a sulfuric acid system, the thallium extracting rate is increased by controlling a specific technology, and therefore thallium can be thoroughly separated. In addition, by means of the separating and recycling method, pollution is avoided, the cost is low, and great economic benefits are achieved for comprehensive recycling of thallium.

The invention provides a preparation process of herba dendrodii officinalis concentrated solution applicable to a facial mask, and relates to the technical field of processing of herba dendrodii officinalis. The preparation process of the herba dendrodii officinalis concentrated solution applicable to the facial mask comprises the steps of: raw material selection, raw material beating, heat preservation enzymolysis, ultrasonic homogenization, supercritical carbon dioxide processing, filtering for impurity removal, decoloration centrifugation, concentration processing and the like. According tothe invention, the defects of the prior art are overcome; and the steps of enzymolysis, homogenization, supercritical carbon dioxide extraction, filtering, centrifugation and the like are adopted, sothat an extraction rate for the herba dendrodii officinalis is effectively promoted, the content of active ingredients in extraction liquid is promoted, meanwhile, loss of the active ingredients is reduced, and economic benefits are increased.

The invention discloses a method for accurately controlling the temperature and pressure of a supercritical extraction process. By aiming at the characteristics of non-linearity, strong coupling and interference nonmeasurability of temperature and pressure as well as high requirement on temperature and pressure control accuracy in a carbon dioxide supercritical extraction process, the method is characterized on the basis of deeply analyzing an extraction process mechanism, a partial mathematic model of the extraction process is established; based on the model, a multivariable inference control method is adopted to control the temperature and pressure in an extraction kettle in the extraction process. The method is capable of not only realizing decoupling between the temperature and pressure of the extraction process, but also realizing full tracking under set value disturbance and full compensation under nonmeasurable disturbance, improving the temperature and pressure control accuracy and substance extraction ratio of the extraction process and improving economic benefits.

The present invention provides a blood glucose lowering polygonatum sibiricum-chrysanthemum tea beverage production method, and belongs to the tea beverage production method related technical field, particularly to a polygonatum sibiricum-chrysanthemum tea beverage production method. A purpose of the present invention is to solve the problem of abandonment and incomplete utilization of coarse old tea leaves, polygonatum sibiricum leaves and chrysanthemum leaves in the prior art. The method comprises: a picking and material preparing step, an extraction squeezing separation step, a filtration step, a sterilization drying step, and vacuum packaging. According to the present invention, the coarse old tea leaves, the polygonatum sibiricum leaves and the chrysanthemum leaves are adopted as the raw materials to produce the blood glucose lowering polygonatum sibiricum-chrysanthemum tea beverage, such that the plant source is completely utilized, the waste of the resources is solved, and the characteristics of low production material cost, high extraction rate, easy drinking, blood glucose lowering, health and the like are provided.

The invention discloses a conical extraction element with double flow channels and a flow-through extraction method. The extraction element consists of three parts including an upper-layer conical cover plate, a middle-layer conical baffle plate and a lower-layer conical flow guiding plate having the same central axis, a vertically-arranged round connection pipe and a horizontally-arranged annularsupport plate, wherein an annular gap flow channel is formed between the cover plate and the baffle plate; the bottom part of the flow channel, close to the upper side wall of the round connection pipe, is sealed; a dispersion phase fluid flows through the flow channel and then penetrates through distribution holes formed in the cover plate and then undergoes contact mass transfer with an external continuous phase; an annular gap flow channel is also formed between the baffle plate and the flow guiding plate; flow limiting holes formed in a part where the bottom part of the flow channel is close to lower side walls of the round connection pipe are communicated with the outside of the extraction element; the outer continuous phase fluid penetrates through the flow limiting holes, then flows through the flow channel and enters into the extraction element. The conical extraction element with the double flow channels disclosed by the invention has the advantages of wide operation elasticity, high space utilization ratio, large mass transfer velocity and the like.

The invention relates to a method for extracting copper ions through ultrasonic wave channelization, and belongs to the technical field of hydrometallurgy. Feed liquid containing the copper ions and the organic phase of an extraction agent are pumped into extraction pipelines of extraction pipeline reactors for obtaining the loaded organic phase, and the extraction pipeline reactors are connected in series for carrying out multi-stage counter current extraction in the extraction process; after extraction is completed, the obtained loaded organic phase and a back extraction solution are pumped into the extraction pipelines of the extraction pipeline reactors for obtaining copper-bearing pregnant solutions through back extraction, and the extraction pipeline reactors are connected in series for carrying out multi-stage counter current back extraction in the back extraction process. According to the method, the feed liquid and the organic phase have the advantages that the contact area is large in a small pipeline and the mass transfer velocity is high, the strong cavitation effect, the mechanical vibration effect and the disturbance effect of ultrasonic waves are fully utilized, and therefore the mass transfer efficiency is improved, the extraction time and the back extraction time are shortened, the production cost is lowered, and the safety of the extraction process is improved.

The invention provides a reverse micelle system used for extracting proteins, and a preparation method and an application thereof. The reverse micelle system is composed of hydrophobic starch and a nonpolar organic solvent, wherein substitution degree of the hydrophobic starch is 0.5-3; the nonpolar organic solvent includes isooctane and n-octanol according to the volume ratio of 1:1-9:1; the mass-volume ratio (g:mL) of the hydrophobic starch to the nonpolar organic solvent is 0.001:1-0.01:1. A surfactant for preparing a reverse micelle solution is a starch-based product, which has excellent biodegradability and biocompatibility. The reverse micelle system has higher extraction ratio to macromolecular proteins than other reverse micelle systems.

The invention relates to an extraction method and an extraction agent for a denitration procedure in an H acid production process, and belongs to the technical field of the organic chemical industry.The extraction method comprises the following steps: firstly, preparing the extraction agent which comprises a solvent, a diluting agent and a co-solvent, wherein the co-solvent is 2-ethylhexylphosphoric acid mono-2-ethylhexyl ester, the solvent is a tertiary amine type solvent, and the diluting agent is one or more of sulfonated kerosene, benzene and toluene; then, extracting denitration substances by adopting the extraction agent, and forming a complexation layer and an inorganic acid aqueous layer after extracting; and applying the inorganic acid aqueous layer to an H acid segregation procedure, performing back extraction on the complexation layer, adding a back extraction agent until the pH of an organic aqueous phase formed by back extraction is 7-9, forming trisodium salt from the denitration substances, standing the trisodium salt to be layered to obtain an organic layer, and applying a solvent layer. The extraction agent does not react with the denitration substances, so that the complexation effect is good, the layering is easy, and the loss of the extraction agent is greatly reduced; and by applying the extraction method and the extraction agent to H acid production, generation of a large amount of wastewater is avoided, a large amount of ammonia is saved, and thus the production cost is lowered.

The invention discloses an aqueous bi-phase system and application thereof to extraction of vitamin B6 from watermelon pulp. The aqueous bi-phase system comprises the following raw materials by mass: 50 to 70.1 percent of n-butylpyridium chloride ionic liquid, 15.3 to 24.2 percent of monopotassium phosphate and the balance of water, wherein the total percentage of the three ingredients is 100 percent. The extraction rate of vitamin B6 from watermelon pulp can reach up to 98.9 percent according to the application. The application has the advantages that the linearity range is wide; the detection limit is low; the relative standard deviation is relatively low; the detection recovery rate to a sample is high; the extraction effect is favorable; a large quantity of vitamin B6 can be provided for various fields such as biological medicine due to the aqueous bi-phase system and the application.

The invention provides a micro-extraction method based on phase transition properties of temperature-sensitive polymers. The method comprises the steps of sequentially adding an aqueous solution containing organic pollutant and the temperature-sensitive polymers to a comparison tube; placing the comparison tube in a water bath pot at 40 DEG C, after the aqueous solution is changed from clarification to turbidity, adding inorganic salt, and centrifuging and separating solid phase materials; adding a small amount of organic solvent to the collected solid phase materials for extraction. The micro-extraction method based on the phase transition properties of the temperature-sensitive polymers can extract the organic pollutant with a small amount of organic solvent, has high extraction rate, and is simple and quick to operate.

The invention relates to a method for extracting microcapsule slow-release pungent litse fruit essential oil capable of being applied to fresh keeping of meat products. The crushing particle size of dried pungent litse fruits is 40 meshes, the one-time feeding amount is 800 g, and the optimal technological parameters of supercritical CO2 extraction are as follows: the extraction pressure is 26 MPa, the extraction temperature is 46 DEG C, the extraction time is 148 min, and the extraction yield of the essential oil is up to 38.65%. Through analysis of physical and chemical indexes of the essential oil, it is found that the color L* value is 41.10, the a* value is 16.17, the b* value is 21.43, the relative density is 0.924, the saponification value is 195.29 mgKOH/g, the refractive index is 1.473, the peroxide value is 0.14 g/100 g, the acid value is 2.31 mgKOH/g, and all the indexes meet the requirements of the national standard. The optimal technological parameters for embedding the pungent litse fruit essential oil microcapsule are as follows: the ratio of a composite wall material is 1:1 (g/g), the ratio of a core material to a wall material is 1:5 (g/g), the solid content is 15%, the content of an emulsifier is 3%, the ratio of an emulsifier is 1:4 (g/g), the emulsification temperature is 40-50 DEG C, and the embedding rate of the pungent litse fruit essential oil microcapsule prepared under the conditions can reach 84.68%. The water content, the solubility and the bulk density are 3.05%, 91.04% and 0.35 g/cm<3> respectively.

The invention discloses a preparation method for separating and extracting a new compound from an A. terreus secondary metabolite. The method comprises the steps of spore preparation, strain fermentation, extraction on the secondary metabolite, and separation and purification, specifically, an epigenetic modifying regulator TSA, nicotinamide and dipeptide are added into a fungal culture medium, fermentation culture is carried out, a fermentation broth and mycelia are subjected to separate extraction, and a fermentation concentrate is separated and purified by column chromatography and high performance liquid chromatography to obtain the separated and extracted new compound. The beneficial effects are as follows: the nicotinamide and dipeptide are added into the culture medium and produce asynergistic gain effect with the epigenetic modifying regulator TSA, and epigenetic modification is performed on A. terreus OUCMDZ-2739 to effectively activate the expression of the silencing gene ofthe strain, and obtain a new secondary metabolite through separation; the novel compound prepared by the invention has a good anti-tumor effect.

The invention discloses an essential oil extraction device and belongs to the technical field of biological refining equipment. The essential oil extraction device comprises a distillation still, a condensing unit and an oil-water separator, wherein the upper part of the distillation still is communicated with the condensing unit, and the oil-water separator is communicated with the bottom of the condensing unit. The essential oil extraction device is simple in structure. Due to the arrangement of the condensing unit with higher working efficiency, the essential oil extraction efficiency can be greatly improved, the extraction rate is also greatly improved, oil-water separation is relatively thorough, and the loss of essential oil is relatively small in the extraction process. The essential oil extraction device has the advantages of low cost and high benefit and is suitable for wide-scale use.

Belonging to the field of fine chemicals, the invention discloses a citronella oil extraction method. The method includes: cutting a dried citronella stem leaf product into short pieces; then performing tabletting on the cut citronella stem leaf, then putting the product into a filter bag, and conducting feeding into subcritical equipment extraction kettle; pouring a subcritical fluid into the extraction kettle; and controlling the pressure and temperature for static extraction and decompression separation to obtain a citronella extract. The method provided by the invention has the advantagesof short extraction time, high extraction rate, simple and feasible process, low extraction cost, excellent product quality, environmental friendliness, industrializability, etc.

The invention discloses a high-strength disposable extraction vessel, referring to a full-sealed container. An inner cavity of the high-strength disposable extraction vessel is filled with a mixture of traditional Chinese medicine decoction pieces and water. The technical scheme for achieving high extraction rate of active pharmaceutical ingredients of the traditional Chinese medicine decoction pieces is provided, and utilization rate of traditional Chinese medicine is increased.

The invention discloses a compound extractant for content detection of a soluble substance in an elastomer modified asphalt waterproof membrane and a detection method, belonging to the technical fieldof building material detection. The compound extractant contains glycol dimethyl ether and 2, 4-dimethylpentane, wherein the mass ratio of the glycol dimethyl ether and the 2, 4-dimethylpentane is 1:3-4. A mixed solvent of glycol dimethyl ether and 2, 4-dimethylpentane replaces trichloroethylene and is used as an extractant, and a test result and repeatability similar to a test result and repeatability of trichloroethylene are obtained; all components are low-toxic or non-toxic, thereby being more environment-friendly; boiling points of the two components are approximate, and the compound extractant can highly extract the SB modified material in the waterproof membrane, and shortens extraction time effectively

The invention provides a continuous plant extraction machine. According to the continuous plant extraction machine, plant raw material is pushed and pressed at high temperature and high pressure so asto improve the extraction rate of the plants. The continuous plant extraction machine is mainly composed of a base, a material storage device and a material conveying device; the material storage device is arranged above the base, and the plant raw material is enabled to be fallen onto the material conveying device through the material storage device; and then pushing and pressing are generated through a screw shaft of the material conveying device, heating and pressurizing are conducted at the same time, thus cell walls of the plant raw material are destroyed through high-pressure compression, and then the contact area with solvent is increased in the process of promoting the reextraction of compressed substance so that the extraction rate of the plant raw material can be greatly improved; and the structure is a novel structure for innovatively extracting the plant raw material.

The invention discloses an efficient corn oil extracting agent. The efficient corn oil extracting agent is prepared from, by weight, 60-70 parts of ethyl palmitate, 15-19 parts of soybean oil, 10-15 parts of linseed oil, 15-19 parts of castor oil, 10-13 parts of VE10, 5-8 parts of ethyl alcohol and 5-10 parts of zinc oxide. The efficient corn oil extracting agent has advantages that adding of toxic substances such as petroleum ether is effectively avoided, so that product safety is improved; in addition, the extracting rate of the efficient corn oil extracting agent is higher than that of an existing extracting method and reaches 90% or above.