36 results about "Phenol extraction" patented technology

The invention relates to a ginseng, ganoderma lucidum and red date preparation with anti-oxidation and anti-aging effects and application thereof, and belongs to the field of health-care food, and the preparation comprises a ganoderma lucidum polysaccharide extract, a ginseng extract and a red date polyphenol extract. According to the method, the high-voltage pulsed electric field is combined with the Sevage method to extract the ganoderan, the extraction efficiency and purity can be improved while the biological activity of the ganoderan is maintained, and the method has the advantages of being short in time, low in cost, easy and convenient to operate and the like and is suitable for industrial production. Meanwhile, the synergistic effect of the components is achieved, the optimal anti-oxidation and anti-aging effects are achieved, and the prepared ginseng, lucid ganoderma and red date oral liquid preparation has the excellent anti-oxidation and anti-aging effects.

The invention discloses a method for efficiently extracting phenol from coal tar and primarily separating crude phenol oil, and relates to the technical field of chemical separation. Carrying out multi-stage cross-flow or counter-flow extraction on the extracting agent and the coal tar to obtain a raffinate phase and a high-concentration extraction phase; and mixing the raffinate with condensate at the top of the regeneration device and supplemented fresh water, and recovering residual organic amine through a reverse extraction device to obtain a dephenolized oil product and backwashing water. Mixing and diluting the extract phase with backwashing water, and standing for phase splitting to obtain a high-grade crude phenol oil phase and a low-concentration extract phase; the low-concentration extraction phase absorbs CO2 in the industrial tail gas for acidification to obtain a low-grade crude phenol oil phase and an amine salt aqueous solution; and desorbing the amine salt aqueous solution to obtain a regenerated extraction agent (circularly used for extraction), tower top condensate (circularly used for reverse extraction) and water-containing industrial-grade CO2 gas (recycled or sealed after drying). According to the method, high-efficiency extraction of the phenolic compounds in the coal tar and primary separation of crude carbolic oil are realized by utilizing the extraction performance differences of extraction capacities, selectivity and the like of the extraction agents with different concentrations on the phenolic compounds, and the production economy is improved.

The invention relates to the technical field of polyphenol extraction, and particularly discloses an elaeagnus angustifolia polyphenol extraction method and application thereof.According to the extraction method, through an ultrasonic extraction mode, the extraction temperature is determined to be 40 DEG C, the ethanol concentration is 80%, the ultrasonic extraction frequency is 4 times, the ultrasonic extraction time is 30 min, and the ethanol solid-liquid ratio is 1: 10 (g: mL). The volume fraction of ethanol, the material-liquid ratio, the extraction time, the extraction temperature and the extraction times during extraction are regulated and controlled, so that the extraction amount of the packaged polyphenol is optimal, a traditional extraction process is optimized, and waste of elaeagnus angustifolia resources is effectively avoided.

The invention relates to a process for extracting low-concentration phenol from an aqueous solution by using a hydrophobic eutectic solvent. The extraction agent used in the process is mainly synthesized from tributyl phosphate and n-caprylic alcohol in a molar ratio of 0.5: 1: 2 under the condition of 353.15 K. A phenol aqueous solution is used as an extraction water phase, the influence of various experimental parameters such as pH, temperature and phase ratio on the phenol extraction efficiency is researched by changing the content of phenol in the extraction water phase, and the extraction organic phase and the water phase are fully mixed according to the volume ratio of 1: 0.2-1: 5 and then separated until a clear phase interface appears, so that the two phases are completely separated. After phase separation is finished, an organic phase rich in phenol and a water phase containing a very small amount of phenol are obtained, and the highest extraction efficiency reaches 99% or above. Through three times of back extraction experiments, the back extraction efficiency of the phenol reaches 98% or above, and cyclic utilization of the phenol is achieved in the economic aspect. The method for extracting phenol has the advantages of low energy consumption, simple process, high separation efficiency of phenol and water and the like, the adopted hydrophobic eutectic solvent is low in price, and the preparation method is simple, non-toxic and environment-friendly.

A phenol extraction system for semi-coke wastewater treatment is characterized in that a solvent conveying header pipe is divided into two paths, one path is connected with a solvent inlet in the lower part of a first extraction tower, and the other path is connected with a solvent inlet in the lower part of a second extraction tower; the upper part of the first extraction tower is connected with a wastewater input pipe and an extract overflow pipe, an extract input port at the lower part of the first extraction tower is connected with an extract output port of an extract tank through an extract conveying pump set, and an extract input port of the extract tank is connected with an extract output port at the upper part of the second extraction tower; a wastewater output port at the bottom of the first extraction tower is connected with an input port of a wastewater conveying pump set I, an output port of the wastewater conveying pump set I is connected with a wastewater inlet at the upper part of the second extraction tower, and a wastewater output port at the bottom of the second extraction tower is connected with an input port of a wastewater conveying pump set II; and an output port of the wastewater conveying pump set II is connected with the extracted wastewater conveying pipe. The device disclosed by the utility model has the advantages of high removal efficiency of phenolic substances and stability in operation.

The utility model discloses a device for extracting flavone polyphenol from cedrela sinensis, which comprises a cabinet body unit, the cabinet body unit comprises a processing cabinet and a water bath pot matched with the processing cabinet, in the using process of the device, a filter screen slides into a tank body and is fixed by a limiting assembly to complete installation, then a solution is poured into a liquid inlet pipe and flows into a processing bottle, and the processing bottle is connected with the processing cabinet; meanwhile, dried cedrela sinensis is put into the tank body, a motor is started, blades rotate and smash the cedrela sinensis, powder is filtered through a filter screen, falls into a material guide pipe and enters a treatment bottle to be mixed with a solution, then a water bath kettle is started for constant-temperature heating, extraction reaction is promoted to complete flavone polyphenol extraction, the whole process is integrated, frequent reciprocating of personnel is not needed, and efficiency is improved; the toona sinensis flavonoid polyphenol extraction device solves the problems that the existing toona sinensis flavonoid polyphenol extraction process flow is tedious, crushing, filtering and soaking are needed, operators frequently go back and forth, and the efficiency is low.

The invention relates to a treatment device and a treatment method for extracting crude phenol from phenol-containing distillate oil and realizing zero discharge of wastewater. The device comprises an alkaline washing tower, a stripping tower, a decomposition tower, an extraction machine, a regeneration machine, an adsorption tower, a complexing tank, an alkali preparation tank and a crystallizer, the method comprises the following steps: S1, preparing dilute alkali; s2, carbolic oil alkali washing; s3, stripping to remove impurities; s4, acidizing and decomposing; s5, extracting and dephenolizing; s6, regenerating the extracting agent; s7, adsorption and dephenolization; s8, complexing and removing impurities; and S9, crystallizing and desalting. The method provided by the invention can realize extraction of crude phenol from carbolic oil and zero discharge of wastewater, and thoroughly solves the problem of environmental protection in acid-base phenol extraction of coal tar.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a high-phenol high-salt industrial wastewater treatment process which comprises the following steps: S1, preparing a composite extracting agent, S2, extracting phenol, S3, regenerating the extracting agent, S4, pretreating a dephenolized water phase, and S5, evaporating and desalting. Compared with the prior art, the invention has the following beneficial effects: through compounding of tributyl phosphate and kerosene, the addition of kerosene can enhance hydrophobicity by reducing viscosity, dispersing tributyl phosphate molecules and retaining tributyl phosphate at the same time, the extraction efficiency of phenol is greatly improved, the extraction efficiency is high, the maximum extraction rate of phenol is high, and the method is suitable for industrial production. The phenol extraction rate can reach 95.5% after extraction is carried out for 1.5 hours, and the maximum phenol extraction rate is stabilized at 97.2% after extraction is carried out for 2 hours.

The application discloses a coal chemical high-salt high-phenol wastewater treatment method and system, and the method comprises the following steps: detoxification pretreatment, salt-tolerant biochemical treatment, deep desalination and crystallization, and resource recovery. The application adopts a process route of "front-end deep detoxification and impurity removal + middle-end salt-tolerant biochemical synergy". First, through the precise pretreatment of "ammonia evaporation and ammonia removal" and "extraction and phenol extraction", ammonia nitrogen and phenols and other toxic substances are efficiently removed at the source, and the inhibiting factors of the subsequent biochemical unit are fundamentally removed. Then, combined with the domesticated salt-tolerant microbial flora (Halomonas and Chromohalobacter), the biochemical system can stably operate in a high-salt environment with TDS>15000 mg / L, and the COD removal rate is stably above 80%, so that the combined inhibition problem of high salt, high phenol and high ammonia nitrogen to biochemical treatment is solved, and the long-term stable operation of the whole process is ensured.

The utility model relates to a treatment device for extracting crude phenol from phenol-containing distillate oil and realizing zero discharge of wastewater, which comprises an alkali preparation tank, an extraction pipeline at the top of a crystallizer is connected with the alkali preparation tank, the alkali preparation tank is respectively connected with the upper part of an alkaline washing tower, the upper part of a regenerator and the upper part of an adsorption tower, and the lower part of the alkaline washing tower is connected with a phenol-containing distillate oil pipeline; the bottom of the alkaline tower is connected with the upper part of the stripping tower through a pipeline; the bottom of the stripping tower is connected with the decomposition tower through a pipeline; the decomposition tower is connected with the upper part of the extraction machine; an extraction pipeline at the top of the extraction machine is connected with the lower part of the regenerator; a bottom extraction pipeline of the regenerator is connected with the decomposition tower, a bottom extraction pipeline of the adsorption tower is connected with the upper part of the complexing tank, a regeneration outlet of the adsorption tower is connected with the decomposition tower, and the complexing tank is connected with the crystallizer. The device provided by the utility model can realize extraction of crude phenol from carbolic oil and zero discharge of wastewater, and thoroughly solves the environmental protection problem in the process of acid-base phenol extraction from coal tar.

The invention belongs to the technical field of resource recycling, and particularly relates to a composite extraction agent for separating rubidium and cesium from a recovery liquid for extracting lithium, the composite extraction agent comprises a synergistic extraction agent, a diluent and a phase regulator; the synergistic extraction agent comprises a main extraction agent and a synergistic extraction agent; the main extraction agent is a substituted phenol extraction agent, and the synergistic extraction agent is an organic phosphorus extraction agent. On one hand, the composite extraction agent improves the rubidium and cesium extraction effect, and the cost is reduced; and on the other hand, the requirement of the extraction agent for alkalinity is reduced, efficient extraction of rubidium and cesium can be achieved under the low-alkalinity condition, and a series of problems that a traditional substituted phenol extraction system is serious in emulsification phenomenon, large in extraction agent dissolution loss and the like are solved. The organic phase of the extraction system can be recycled, the defects of easy emulsification, equipment corrosion and the like of the traditional extraction method can be effectively avoided, and industrial production is easy.

The invention belongs to the technical field of extraction equipment, and discloses magnolia officinalis total phenol extract extraction equipment and an extraction method thereof.The magnolia officinalis total phenol extract extraction equipment comprises an extraction kettle provided with a sealing cover; the discharge pipe is connected to the bottom of the extraction kettle and is used for conveying the extracted raw materials; the conveying pipe is arranged on one side of the discharging pipe and is used for conveying CO2 to react with the raw materials; the driving assembly is arranged at the top of the sealing cover, the driving assembly is connected with a stirring adjusting mechanism and used for stirring the raw materials, and the stirring adjusting assembly comprises a stirring structure arranged in the extraction kettle. Raw materials are stirred through a first stirring rod and a second stirring rod, local accumulation of the raw materials in the extraction kettle due to one-time feeding of the raw materials is prevented, then the raw materials are flattened through a flattening structure, the surfaces of the raw materials are smooth, CO2 can stably flow through and permeate, the raw materials are fully combined, the extraction efficiency is improved, and total phenols are conveniently extracted; and the quality and yield of final products are improved.

The invention relates to a device and a method for extracting crude phenol from phenol-containing distillate oil and performing zero discharge treatment on wastewater. The device comprises an alkaline washing tower, a stripping tower, a decomposition tower, an extraction machine, a regenerator, an adsorption tower, a complexing tank, an alkali preparation tank and a crystallizer, the method comprises the following steps: S1, preparing dilute alkali; s2, carbolic oil alkali washing; s3, stripping to remove impurities; s4, acidizing and decomposing; s5, extracting and dephenolizing; s6, regenerating the extracting agent; s7, adsorption and dephenolization; s8, complexing and removing impurities; and S9, crystallizing and desalting. The method provided by the invention can realize extraction of crude phenol from carbolic oil and zero discharge of wastewater, and thoroughly solves the problem of environmental protection in acid-base phenol extraction of coal tar.

The invention discloses an immature bitter orange polyphenol extract as well as an extraction method and an optimization method thereof, and relates to the technical field of plant extraction. The extraction method comprises the following steps: S1, taking immature bitter orange as a raw material, and performing ultrasonic-assisted extraction by using ethanol to obtain a crude extract; s2, adding the crude extract into water, heating to dissolve the crude extract, cooling, adding absolute ethyl alcohol, standing, and centrifuging to remove precipitate to obtain a concentrated solution; and S3, carrying out dynamic adsorption and desorption on the concentrated solution by using resin, eluting by using ethanol, collecting the eluent, and concentrating to obtain the product. According to the method, parameters such as ethanol volume fraction, liquid-solid ratio, ultrasonic time, power and temperature are optimized through a response surface analysis method, the most suitable resin is screened out for further purification, the method has the advantages of high yield, low cost and environmental protection, efficient and green extraction preparation of the total phenols of the immature bitter oranges is achieved, the naringin content in the extract is higher than 50 g / 100 g, and the method is suitable for industrial production. The content of neohesperidin is higher than 10g / 100g.

The present application relates to the technical field of pine mushroom polyphenol extraction, in particular to a pine mushroom polyphenol extraction method and preparation. The method uses an ethanol solution to extract pine mushroom raw materials at least once under heating and ultrasonic conditions to obtain pine mushroom polyphenol extract; wherein the extraction temperature is 45-55 DEG C, the solid-liquid ratio of the pine mushroom raw materials and ethanol is 1:38-42, and the ultrasonic time is 55-65 min in the ultrasonic conditions. The cavitation effect, mechanical effect and thermal effect produced by the ultrasonic waves synergistically act on the special cell wall structure of pine mushrooms, effectively break the special cell wall structure of pine mushrooms, realize the efficient dissolution of polyphenols while avoiding thermal degradation and oxidative loss, and solve the technical problems existing in the application of conventional extraction methods to pine mushrooms.

The invention discloses a preparation method of an immobilized enzyme carrier material for preparing tea polyphenol, and belongs to the technical field of tea processing. According to the prepared immobilized enzyme carrier material, hollow hydroxyl iron powder coated with carbon nano tubes is prepared through pitting treatment, the hollow hydroxyl iron powder has a good core-shell structure to adsorb enzyme loads, then the surfaces of the carbon nano tubes are coated with micro-rough COF materials, the specific surface area of the carrier is increased, and the carrier adsorbs more enzymes; the enzyme immobilization effect is improved through bonding of a nitrogen group of a COF ring structure and an epoxy group on the surface of agarose gel, and the immobilized enzyme carrier material with a good tea polyphenol extraction effect is obtained.

The invention provides a golden pomfret low-temperature preservation method based on gulfweed polyphenol composite double-layer edible film treatment, and relates to the technical field of aquatic product preservation, the preservation method comprises the following steps: (1) preparation of an inner layer film liquid, (2) preparation of an outer layer film liquid, (3) treatment of golden pomfret, and (4) preservation. The preservation method has the advantages of being green, free of pollution, good in preservation effect, small in influence on the flavor of the trachinotus ovatus and low in storage temperature requirement. By adding the gulfweed polyphenol extract into the edible film and adopting a double-layer preservative film for treatment, the preservation capacity of the edible film is improved, and the application potential in aquatic product preservation is large.

The invention provides an organic snow-melting agent as well as a preparation method and application thereof, and belongs to the technical field of snow-melting agents. The organic snow-melting agent is prepared from the following components in parts by weight: 18 to 22 parts of modified sodium lignin sulfonate, 10 to 12 parts of hydrolyzed polyglutamic acid, 5 to 7 parts of bagasse polyphenol extract, 12 to 14 parts of trehalose, 8 to 10 parts of trisodium citrate, 5 to 6 parts of glycerol, 12 to 14 parts of potassium humate, 8 to 10 parts of silicon-calcium-potassium-magnesium ore powder, 5 to 7 parts of water-retaining agent and 3 to 5 parts of complex microbial inoculant. According to the ecological snow-melting agent and the preparation method thereof provided by the invention, unexpected technical effects far better than those of the prior art are generated in the aspects of ice melting efficiency, low corrosivity and environmental friendliness.

The application discloses a marine organism muscle tissue DNA extraction kit and application thereof, and belongs to the technical field of biological detection. The extraction kit comprises a lysis solution, a first washing solution and a second washing solution. The lysis solution is composed of Triton x-100 45 mM, Tris-HCl 10 mM, EDTA-Na 80 mM, NaCl 80 mM and Brij-35 3 mM, and has a pH of 8.3. The first washing solution is composed of 70% ethanol solution containing 200 mM Tris-HCl. The second washing solution is composed of 80% ethanol solution. The marine organisms include oceanic fishes, Antarctic fishes, shellfishes, crabs and shrimps. The tissue is taken, cut, mixed with the lysis solution and protease K, and uniformly mixed in a water bath. The application is based on the phenol extraction method, and various mild reagents are mixed to realize rapid and accurate DNA extraction, so that the purity, quality and integrity of the DNA are ensured.

The present application provides a method for extracting phenolic substances from coal tar, which comprises: primary extraction: extracting poor phenol oil by using a composite organic amine aqueous solution to obtain a dephenolized oil A and a rich phenol extraction phase A; secondary extraction: extracting a rich phenol fraction oil by using the rich phenol extraction phase A to obtain a dephenolized oil B and a rich phenol extraction phase B, wherein the poor phenol oil is obtained by mixing coal tar and the dephenolized oil B, and the rich phenol fraction oil is a fraction oil of the coal tar; acidification: acidifying the rich phenol extraction phase B by using an acidifying agent to obtain a crude phenol oil C and a composite organic amine aqueous solution rich in the acidifying agent through separation; and extractant regeneration: removing the acidifying agent from the composite organic amine aqueous solution rich in the acidifying agent to obtain the composite organic amine aqueous solution for recycling in the primary extraction step. The method of the present application is resource-saving, green and pollution-free, has low process energy consumption, and the crude phenol oil product has high purity.

The invention provides a natural plant polyphenol alcohol-free wash-free gel and a preparation method thereof, and the natural plant polyphenol alcohol-free wash-free gel is prepared by mainly using natural plant polyphenol extracted from red raspberry leaves, dandelion flowers and pomegranate rind as a bacteriostatic agent and embedding the extracted natural plant polyphenol by using a polylactic acid-polyethylene glycol copolymer. The preparation method comprises the following steps: (1) raw material pretreatment, (2) polyphenol extraction, (3) polyphenol microsphere suspension preparation, (4) polyphenol microsphere collection, (5) aloe polysaccharide extract preparation, and (6) no-wash gel preparation. The invention provides a new path for high-valued utilization of agricultural and sideline products and upgrading of natural polyphenol industry, endows the gel with high efficiency and broad-spectrum antibacterial performance, avoids irritation of alcohols to skin, eliminates flammable hidden danger of alcohols, and can be used in places such as airports and stations. The stability of the polyphenol is remarkably improved and the shelf life is prolonged through copolymer embedding, long-acting bacteriostasis is achieved, and the hydrogel has good biocompatibility and wide market prospects.

The invention discloses a method for extracting and enriching phenol in a water body and detecting monomer stable carbon isotope, and relates to the technical field of environmental monitoring. Based on the dissolution difference of phenol in an organic solvent and water in an acid-base environment, phenol extraction and enrichment are realized, and chromatographic detection background interference and co-overflow phenomena are reduced. The method comprises the following steps: testing the concentration of an extracting solution by adopting GC-MS (Gas Chromatography-Mass Spectrometer), concentrating, diluting or adjusting the sample size, and testing the carbon isotope value on the sample size of a chromatographic column of about 30 ng C by adopting GC-C-IRMS, so that a peak signal is stabilized in a proper interval, and the testing accuracy is guaranteed. The method is suitable for water bodies of different types (fresh water and seawater) and different pollution degrees (small pollution and domestic industrial sewage), and experiments verify that the test result is consistent with the EA-IRMS test result of pure phenol, so that the method does not generate fractionation of phenol carbon isotope ratio, is good in repeatability, and can be used for tracing the source of phenol pollution in the water body environment and researching a degradation mechanism.

The invention discloses a compound extraction method of wolfberry combined polyphenol, and relates to the technical field of natural product extraction. The preparation method comprises the following steps: by taking dried Chinese wolfberry as a raw material, crushing, sieving, refluxing with ethanol to remove free polyphenol, drying Chinese wolfberry residues, adding water to adjust the pH to be acidic, adding a compound enzyme of cellulase, pectinase and acid protease, carrying out enzymolysis, carrying out ultrasonic treatment, centrifuging, adjusting the pH of supernate, extracting, and carrying out rotary evaporation concentration, so as to obtain the Chinese wolfberry combined polyphenol extract. According to the process, the combined phenol extraction rate reaches 6.02 + / -0.51 mg / 100g, the antioxidant activity of the extract is remarkably improved, the process is mild and free of strong acid and strong alkali, few solvent residues exist, equipment is universal, parameters are easy to control, large-scale production can be achieved, and technical reference is provided for extraction of other plant combined polyphenols.

The invention relates to a phenol sodium salt phenol extraction sewage treatment process. The process comprises the following steps: removing oil stains and solid impurities in sewage; extracting and separating by using an extracting agent, and cooling a water phase at the temperature of-5 DEG C to 5 DEG C to separate out Na2SO4 crystals in the water phase, so as to obtain a suspension; centrifugally separating the obtained suspension, heating and dissolving the obtained solid-phase crude salt, evaporating and crystallizing, centrifugally dewatering, and drying to obtain a Na2SO4 salt product; and mixing salt wastewater obtained by centrifugal separation and evaporation, and carrying out biochemical treatment. According to the treatment process provided by the invention, the salt with economic value in the phenol extraction sewage is recovered, the obtained Na2SO4 salt can reach the commercial standard of third level or above, meanwhile, harmful substances such as phenol and heavy metals in the wastewater are separated, and the phenol content in the finally discharged sewage can be as low as 0.05 mg / L.

The utility model discloses a liquid-liquid separation device for a phenol extraction tower, which comprises an extraction assembly, and the extraction assembly comprises an extraction tower main body and a tower cover; the extraction rate increasing assembly comprises a sieve plate, L-shaped rods, a motor, a rectangular shaft rod and a cutting blade, the sieve plate is movably connected in the extraction tower main body, the two sides of the top of the sieve plate are fixedly connected with one ends of the L-shaped rods, the motor is fixedly connected between the other ends of the L-shaped rods, and the output end of the motor is connected with the rectangular shaft rod. The two sides of the rectangular shaft rod are fixedly connected with cutting blades. According to the utility model, the motor can drive the cutting blade to rotate, so that liquid passing through the sieve pores can be cut and crushed, and phenol organic phase liquid is dispersed into smaller and more uniform liquid drops; compared with a common sieve plate with a simple structure, the contact area of phenol organic phase liquid drops and a water phase continuous phase is greatly increased, mass transfer of phenol between two phases is facilitated, and the extraction efficiency is further improved.

The present invention is applicable to the extraction and application field of biological products, and proposes a green pigment A of Metarhizium anisopliae and an extraction method, comprising the following steps: screening Metarhizium anisopliae; expanding culture and collecting spores; pre-enzymatic hydrolysis treatment; mixing cellulase solution, snail enzyme solution and chitinase solution into a cell wall enzymatic hydrolysis solution, and performing enzymatic hydrolysis treatment; adding a phenol extractant to the spores after enzymatic hydrolysis treatment, and obtaining a green pigment through separation; obtaining the molecular formula of the green pigment A of Metarhizium anisopliae by liquid chromatography-mass spectrometry analysis, and obtaining the chemical structure of the compound by liquid nuclear magnetic resonance. In summary, the present invention obtains the pure product of the green pigment A of Metarhizium anisopliae by the method of enzymatic hydrolysis + phenol extraction, and obtains the structure of the green pigment A of Metarhizium anisopliae by liquid chromatography-mass spectrometry analysis, laying the foundation for the determination of its synthetic gene, the identification of its metabolic pathway and its commercial application.

The invention discloses a propolis polyphenol extract, hydrogel and preparation methods of the propolis polyphenol extract and the hydrogel, and the preparation method of the propolis polyphenol extract comprises the following steps: (1) crushing a propolis sample; (2) degreasing the propolis powder by using petroleum ether; (3) mixing 65%-70% ethanol with the degreased propolis raw material; (4) ultrasonic-assisted extraction; (5) extracting with ethyl acetate; (6) purifying the extract liquid by using HPD-100 macroporous resin column chromatography, and collecting a fraction containing polyphenol components; (7) concentrating the collected liquid in vacuum; and (8) carrying out vacuum drying on the concentrated solution to obtain the propolis polyphenol extract. The invention provides a method for efficiently extracting propolis polyphenols. The polyphenol content in an extract is remarkably increased (greater than or equal to 80%); based on the extracted polyphenol, the propolis polyphenol hydrogel which is stable in structure and definite in function is developed, and the application of the propolis polyphenol hydrogel in the fields of antibacterial wound nursing, antioxidant skin care and the like is expanded.

The invention discloses a method for extracting catechin from grape seeds by using a natural eutectic solvent, and relates to the technical field of food science and engineering.The method is technically characterized by comprising the steps that S1, raw material treatment is conducted, grape wine industry waste is collected and subjected to freeze-drying treatment to remove moisture, and then powder extraction raw materials are obtained through grinding treatment; the granularity of the powdery extraction raw material is 50-100 meshes; s2, preparing deep-eutectic solvents: mixing two natural deep-eutectic solvents in a molar ratio of 1: (1-2), and heating and stirring until a pure, transparent and uniform viscous liquid is formed; s3, mixing reaction: mixing the extraction raw material prepared in S1 and the eutectic solvent prepared in S2 to obtain a mixture; s4, ultrasonic treatment: performing ultrasonic treatment on the mixture obtained in S3 under a water bath condition; s5, solid-phase extraction and concentration: separating the mixture subjected to ultrasonic treatment in S4 by adopting a solid-phase extraction technology to obtain the grape seed polyphenol extract with catechin as a main component.

The invention discloses a super-crosslinking polymeric ionic liquid for extracting phenol from coal tar and a preparation method of the super-crosslinking polymeric ionic liquid, and belongs to the technical field of functional polymer materials and separation. The super-crosslinked polymeric ionic liquid is a polymeric ionic liquid formed by chemically bonding a super-crosslinked porous polymer skeleton and a quaternary ammonium salt group. The preparation method of the super-crosslinked polymeric ionic liquid comprises the following steps: firstly, carrying out Friedel-Crafts alkylation self-condensation reaction on benzyl halide and a cross-linking agent in 1, 2-dichloroethane under the action of a catalyst to form a super-crosslinked porous polymer; and secondly, carrying out quaternization reaction on the super-crosslinked porous polymer and 1, 4-diazabicyclo [2.2. 2] octane in ethanol, so as to prepare the super-crosslinked polymeric ionic liquid. The super-crosslinking polymeric ionic liquid prepared by the method has a micropore, mesopore and macropore structure, the BET specific surface area is 500-1200 m < 2 > g <-1 >, and the super-crosslinking polymeric ionic liquid is suitable for efficient selective adsorption separation of phenol in coal tar. The preparation method disclosed by the invention is simple in process and has a relatively good application prospect.