877 results about "Choline chloride" patented technology

The invention relates to the technical field of biological extraction, in particular to a green synergistic extraction system and an extraction method and application thereof.The green synergistic extraction system comprises a deep eutectic solvent system, an enzymolysis system and an ultrasonic-assisted extraction system, and the deep eutectic solvent system comprises a DES solvent; the DES solvent is composed of a hydrogen bond acceptor and a hydrogen bond donor, and the hydrogen bond acceptor is choline, choline chloride or L-proline; the hydrogen bond donor is lactic acid, urea or ethylene glycol; enzyme preparations in the enzymolysis system are at least two of cellulase, pectinase and beta-glucosidase; the problems that a traditional organic solvent is high in toxicity and poor in biodegradability and synthetic deep eutectic solvent raw materials are non-renewable are solved, a green synergistic extraction system which is environmentally friendly, low in cost and excellent in performance is developed, the mass transfer efficiency and the extraction yield are improved, the used DES and enzyme preparations can be recycled, and the cost is reduced while the environment is protected.

The invention relates to a method for efficiently separating three components of lignocellulose biomass by using an alcohol-based ternary eutectic solvent, which comprises the following steps: uniformly mixing choline chloride, 4-chlorobenzenesulfonic acid and an organic alcohol solvent, heating in an oil bath, and stirring to obtain the alcohol-based eutectic solvent; the preparation method comprises the following steps: mixing an alcohol-based eutectic solvent with agriculture and forestry solid waste powder, putting the mixture into a reaction kettle, introducing carbon dioxide gas until the carbon dioxide gas forms subcritical carbon dioxide, and carrying out stepped progressive increase reaction under the reaction pressure of 2-4MPa to obtain an intermediate product; mixing the intermediate product with a reaction stopping agent, and performing suction filtration, cleaning, vacuum drying and grinding to obtain dry cellulose solid residual powder; adding deionized water of which the volume is 10 times that of the filtrate into the filtrate, standing, precipitating and centrifuging to obtain a lignin-enriched component; and adding a 5-30% ethanol solution, continuously stirring, centrifuging and drying to obtain the purified lignin. The lignin removal rate and the cellulose retention rate of the lignocellulose in the agricultural and forestry solid wastes are effectively improved.

The invention provides loofah sponge nanocellulose hydrogel and a preparation method thereof.The preparation method comprises the following steps that anhydrous citric acid, choline chloride and water are mixed to react, and a ternary eutectic solvent is obtained; dispersing loofah sponge purified cellulose in a ternary eutectic solvent, washing and filtering a product to be neutral, dispersing the product in water, and performing ultrasonic treatment to obtain loofah sponge nanocellulose turbid liquid; dissolving sodium lignin sulfonate and lithium chloride in a sodium hydroxide solution to obtain a precursor solution; mixing the loofah sponge nanocellulose suspension with water, polyacrylamide, ammonium persulfate and N, N-methylene bisacrylamide, pouring the precursor solution into the loofah sponge nanocellulose suspension, uniformly stirring the mixture, pouring the mixture into a mold, and sealing the mold; and forming to obtain the loofah sponge nanocellulose hydrogel. The invention also provides an application of the hydrogel. The hydrogel disclosed by the invention has excellent biocompatibility, mechanical property and conductivity, has a wide application prospect in the field of flexible electronics, and is simple in preparation process, low in cost, green and environment-friendly.

The invention discloses a brassica rapa imago feed and a preparation method thereof, and belongs to the technical field of insect breeding. The Eye spot Brassica rapa adult feed comprises 11 to 15 parts of casein, 1 to 3 parts of Webster salt, 4 to 6 parts of cane sugar, 9 to 12 parts of cellulose powder, 0.2 to 0.4 part of L-cysteine, 0.2 to 0.3 part of choline chloride, 0.08 to 0.1 part of inositol, 0.325 to 0.4 part of composite vitamin, 2 to 3 parts of a nutritional ingredient ethanol solution, 12 to 14 parts of a nutritional ingredient aqueous solution, 1 to 2 parts of honey, 2 to 3 parts of agar powder, 0.03 to 0.04 part of cholesterol, 33 to 67 parts of apple jam, 0.3 to 4 parts of royal jelly and 80 to 120 parts of water. In addition, the invention also provides a preparation method of the feed for the Eye spot Brassica rapa imagoes. The feed for the Eye spot Brassica rapa adults can prolong the life of the adults and improve the egg laying amount at the same time.

The present invention provides a method for preparing coffee diglyceride, belonging to the field of biotechnology. The present invention provides a method for preparing coffee diglyceride, comprising the following steps: 1) mixing coffee oil and glycerol, then adding a composite catalyst and choline chloride to fully mix to obtain a mixed solution; 2) subjecting the mixed solution to catalytic reaction, filtration, and molecular distillation in sequence to obtain coffee diglyceride; the catalytic reaction steps include: first vacuum catalysis, first nitrogen bubbling; second vacuum catalysis, second nitrogen bubbling, and adding a composite catalyst; third vacuum catalysis, third nitrogen bubbling; fourth vacuum catalysis, fourth nitrogen bubbling, and adding a composite catalyst; fifth vacuum catalysis, fifth nitrogen bubbling. The above preparation method is simple, low-cost, and the obtained coffee diglyceride has a high yield, high purity, and good flavor.

The invention relates to the technical field of bacterium enrichment nutrient solutions, in particular to a bacterium enrichment nutrient solution for fermentation and a preparation method of the bacterium enrichment nutrient solution. The culture medium is prepared from the following raw materials in parts by weight: maltodextrin, crystalline glucose, low-pigment yeast extract powder, refined soy peptone, dipotassium phosphate, monopotassium phosphate, magnesium sulfate heptahydrate, sodium chloride, phytic acid, L-ascorbic acid, manganese sulfate monohydrate, biotin, thiamine hydrochloride and choline chloride. Through a double-carbon-source structure, maltodextrin and crystalline glucose cooperate, metabolic oscillation is avoided, and the energy utilization rate is increased; the low-pigment yeast extract powder and the refined soy peptone are complementary, so that the rapid growth requirement of thalli is met; phytic acid is chelated with metal ions to prevent precipitation, L-ascorbic acid is used for resisting oxidation, and biotin and thiamine activate a coenzyme pathway to realize accurate regulation and control of a metabolic network.

The invention provides a lithium battery positive electrode active material recovery method which is characterized by comprising the following steps: S1, providing a eutectic solution which comprises choline chloride, urea and a lithium salt; s2, putting a positive pole piece in a lithium battery into the eutectoid solution to obtain a lithium-supplemented positive pole piece; s3, carrying out separation treatment on the lithium-supplemented positive pole piece obtained in S2 to obtain a lithium-supplemented positive active material; and S4, carrying out roasting treatment on the lithium-supplemented positive electrode active material obtained in S3 to obtain the repaired positive electrode active material.

The invention belongs to the technical field of agricultural biology, and discloses a method for inducing curcuma wenyujin tissue culture seedling test-tube micro rootstocks, which comprises the following steps: inoculating terminal bud cluster proliferation buds of curcuma wenyujin obtained by conventional tissue culture into a rootstock induction culture medium for rooting culture for 30 days to obtain tissue culture seedlings with rootstocks, the rhizome induction culture medium is prepared from 1 / 2MS, 0.1-1.0 mg / L of NAA, 30 g / L of cane sugar, 1-3 mg / L of choline chloride and 1-3 mg / L of compound sodium nitrophenolate, the pH is 5.8, and the weight ratio of choline chloride to compound sodium nitrophenolate is 1: (0.3-2). According to the method, the formation of the curcuma wenyujin test-tube micro rhizomes is induced in vitro, the sterile micro rhizomes are directly transplanted, and the micro rhizome artificial seeds are manufactured for sowing, so that a green seedling hardening and temporary planting link is omitted, and the seedling loss caused by strict requirements of green seedlings on humidity is reduced, and the test-tube micro rhizome seedlings are beneficial to storage and long-distance transportation; therefore, the seedling breeding efficiency of the rhizome plants is improved.

The invention provides a lignin extraction-sulfonic acid modification integrated preparation method based on eutecticevaporate solvent coupling microwaves, lignin sulfonate and application, and belongs to the technical field of oilfield chemistry. The preparation method comprises the following steps: mixing choline chloride, epichlorohydrin and 4-hydroxybenzenesulfonic acid, heating and stirring to obtain a deep eutectic solvent ternary system; the method comprises the following steps: adding biomass powder into a deep eutectic solvent ternary system, and reacting under a microwave condition; after the reaction is completed, filtering, and adjusting the pH value of the obtained filtrate to be neutral to obtain a mixed solution; and then adding an organic solvent into the obtained mixed solution for precipitation, filtering, washing and drying to complete lignin extraction-sulfonic acid modification. According to the method, in-situ grafting of sulfonic acid functional groups is realized in the lignin separation process through the ternary eutectic solvent in combination with microwave-assisted extraction, so that sulfonation modification of lignin is completed. After sulfonation modification, the obtained sulfonated lignin is applied to the drilling fluid, and the viscosity reduction effect can be achieved.

The present invention discloses a low-temperature resistant electrolyte for a liquid flow battery and its application, belonging to the technical field of electrochemical energy storage. By adding a certain amount of additives to the electrolyte of a zinc-bromine liquid flow battery, the additives being choline chloride or a mixture of choline chloride and N-methyl-N-ethylmorpholinium bromide, the assembled zinc-bromine liquid flow battery can stably operate for a long time at a current density of 40 mA cm-2 under the condition of -10 °C, and maintain normal charge and discharge of the battery under the condition of -20 °C. It can prevent the solidification of the charging products at the positive electrode of the zinc-bromine liquid flow battery, broaden the temperature window of the battery, expand its scope of use, and has broad application prospects.

The invention belongs to the field of precious metal recovery, and particularly relates to a method for leaching silver from a silver-containing retired crystalline silicon solar cell. According to the method, the silver in the silver-containing decommissioned crystalline silicon solar cell is recycled and leached through the synergistic effect of an HNO3-H2O2-Fe < 3 + > composite leaching agent and ionic liquid, and the ionic liquid is prepared from choline chloride and malonic acid. Meanwhile, the leaching rate of silver is further improved by optimizing experimental parameters such as the reaction temperature, the reaction time and the H2O2 supply frequency in the three-section gradient temperature control leaching reaction. Compared with the traditional technology, the method disclosed by the invention is green and environment-friendly, low in cost, small in acid consumption and high in recovery rate.

The invention belongs to the technical field of medicines, and particularly relates to a composition for improving obesity and promoting cardiovascular health as well as a preparation method and application thereof. The composition is prepared from the following components in parts by weight: 5 to 20 parts of glycine betaine, 1 to 5.5 parts of choline chloride, 0.5 to 4 parts of L-theanine, 1 to 15 parts of alpha-ketoglutarate calcium, 0.5 to 3 parts of black ginger extract, 0.05 to 0.25 part of black pepper extract, 0.5 to 3 parts of ginkgo leaf extract and 1 to 6 parts of black garlic juice powder. According to the invention, the eight components are selected and are scientifically combined in an optimal quantity ratio range, and the prepared composition can better reduce the inflammation level of a body, regulate abnormal blood fat, improve the lipid metabolism disorder state and effectively reduce impulsive diet behaviors, so that comprehensive improvement of obesity and cardiovascular related risks is realized, and the health-care effect of a human body is improved. The body is effectively assisted to maintain metabolic health.

The invention discloses a method for extracting active ingredients of traditional Chinese medicinal materials based on ultralow-temperature crushing and deep eutectic solvent synergy, a tableted candy for dispelling effects of alcohol and protecting liver and a preparation method of the tableted candy. The ultralow-temperature crushing and deep eutectic solvent synergy extraction technology is combined, and the active ingredients of the traditional Chinese medicinal materials with homology of medicine and food are extracted at low temperature; the method comprises the following steps: firstly, quickly freezing a raw material by using liquid nitrogen and mechanically crushing the raw material to improve the cell wall breaking rate, then stirring and mixing a deep eutectic solvent based on choline chloride and glycerol with water to reduce the viscosity of the solvent for extraction, and carrying out ultrasonic extraction, filtration, macroporous adsorption resin recovery and other steps to obtain a high-purity extract. According to the preparation method, the extraction rate of active substances in the traditional Chinese medicinal materials is increased, and extracts of multiple medicinal and edible Chinese herbal medicines such as lucid ganoderma, radix puerariae, hawthorn and olive are compounded into the tablet candy, so that liver injury caused by alcohol is effectively improved, and side effects caused by long-term administration of medicines can be effectively avoided.

The present invention discloses a biomass-based ionic liquid-modified carbon quantum dots, a preparation method thereof, and a composite lubricant. The preparation method of the biomass-based ionic liquid-modified carbon quantum dots uses biomass raw materials, choline chloride, and amino acids to prepare carbon quantum dots and choline amino acid ionic liquid. The choline amino acid ionic liquid is used to modify the carbon quantum dots to produce a biomass composite lubricant. This uses renewable biomass resources instead of traditional petrochemical resources, is environmentally friendly, can be decomposed by nature, achieves clean production, and eliminates environmental pollution. The CQDs / ILs composite lubricant can function as "nanoballs," thereby improving its load-bearing capacity and reducing wear. In addition to having good lubricating properties, the choline amino acid ionic liquid also has good solubility. Modifying the carbon quantum dots with the choline amino acid ionic liquid not only improves the dispersibility of the carbon quantum dots but also further enhances their tribological properties.

The invention discloses diglyceride prepared by an enzymic method as well as a preparation method and application thereof, and belongs to the technical field of deep processing of grease. The method comprises the following steps: adding fatty acid into a choline chloride-glycerol-urea ternary eutectic solvent, uniformly mixing, and then adding candida antarctica lipase B for esterification reaction to obtain a reaction mixture; separating the reaction mixture, and recovering an upper-layer oil phase; and separating and purifying the upper-layer oil phase to obtain the diglyceride. According to the method, the reaction rate is high, the selectivity of the diglyceride in the esterification process is high, the yield of the diglyceride can reach 65% or above by reacting for 1 h, the selectivity of the diglyceride is 75% or above, and the purity of the separated and purified diglyceride is 90% or above; in addition, the method is simple to operate, and the reaction product and the eutectic solvent can be separated through simple centrifugation after the reaction is finished; in addition, the monoglyceride content in the product is low, and the subsequent separation and purification difficulty is greatly reduced.

The invention discloses a polyampholyte chitosan with high polymerization degree and water solubility and a preparation method thereof, and belongs to the field of natural polymer material preparation. The polyampholyte chitosan is prepared by mixing aminosulfonic acid and one or more of glycerol, urea, lactic acid or choline chloride as a low eutectic solvent, and then adding chitosan for modification, and contains a polyampholyte of cationic groups and anionic groups. The chitosan sulfate product prepared by the invention has a small molecular weight loss, controllable modification sites, and can obtain a polyampholyte chitosan with high polymerization degree; the sulfation reaction has high efficiency, few side reactions, high product purity, good product water solubility, and extremely high application value.

The present invention belongs to the technical field of fly ash resource recycling and utilization, and relates to a method for the synergistic extraction of aluminum, lithium, gallium, and scandium from fly ash. The method comprises the following steps: (S1) pretreatment: adding fly ash to an aqueous solution of an inorganic base, subjecting it to microwave irradiation, and then pressurizing and activating it to obtain a pretreated product; (S2) graded acid leaching: subjecting the pretreated product to primary acid leaching in hydrochloric acid to obtain leachate I and a Si-rich residue I; subjecting the Si-rich residue I to secondary acid leaching in a mixed solution of hydrochloric acid and choline chloride-urea to obtain leachate II and a Si-rich residue II; and (S3) separation and purification: comprising selective adsorption of Ga / Sc / Fe by ion exchange resin, Ca removal and Al / Li separation, step-by-step resin elution, Ga / Sc extraction and separation, Ga stripping, and electrolysis. The present invention achieves efficient synergistic extraction and full resource utilization of aluminum, lithium, gallium, and scandium from fly ash, and the entire process has low energy consumption.

The invention discloses a method for pretreating corn straws and efficiently producing glucose. The invention provides a corn straw pretreatment reagent. The corn straw pretreatment reagent is prepared from the following components in percentage by mass: 20 to 80 weight percent of DES-Gly, 1 to 7 weight percent of DBU and water, the DES-Gly is formed by mixing choline chloride and glycerol. According to the present invention, with the application of the reagent to pre-treat corn straw and then perform enzyme hydrolysis to produce glucose, compared with the prior art, the yield of glucose can be significantly increased, and the yield of glucose can achieve 96.04%; the use amount of a solvent in pretreatment and the reaction temperature and time of pretreatment are greatly reduced, the reaction conditions are milder, and the cost is remarkably reduced. Therefore, the invention provides a novel technology which is simple in method, low in cost and high in efficiency and is used for producing the glucose by utilizing the corn straws, and has a very good application value.

The invention belongs to the technical field of photovoltaic module recycling, and discloses a method for efficiently extracting and recovering valuable components from waste solar cell fragments, which comprises the following steps: firstly, carrying out aluminum removal leaching by using chlorate, then carrying out silver extraction leaching by using a choline chloride / ethylene glycol / water / mixture as a silver leaching solvent, and finally, carrying out high-efficiency recycling on the valuable components. Diluting the silver leaching solution to obtain silver chloride with relatively high purity; and finally, carrying out silicon nitride removal leaching through a hydrogen fluoride solution to obtain a high-purity silicon-containing material. By the adoption of the method, the aluminum removal rate reaches up to 97% or above, the non-silver nitrate leaching solvent is adopted, the purity of obtained silver chloride is larger than 97%, the silicon material with the purity larger than 99% is finally obtained, and efficient, economical and environment-friendly comprehensive extraction and recovery of the waste solar cell fragments are achieved.

A method for extracting lignin from lignocellulosic biomass using a non-choline chloride based natural deep eutectic solvent (NADES) formed from Citric Acid (CA) and Fructose (Fr) comprises mixing the biomass with the NADES, obtaining a lignin-NADES suspension, lyophilizing, rehydrating, and drying the suspension, and repeating the rehydration and drying steps to obtain lignin particles. The biomass used can be Ghaf biomass waste. The NADES preparation includes adding distilled water to reduce viscosity, mixing CA and Fr with distilled water in specific molar ratios of CA:Fr:distilled water of: 1:1:1, or 3:1:1, or 5:1:1, adjusting pH, stirring, and heating. The method also includes specific conditions for mixing, stirring, heating, and terminating the reaction. The lignin-NADES suspension is obtained through vacuum filtering and lyophilized by vacuum freeze-drying. The method avoids the use of acid-precipitation techniques, ensuring an efficient and environmentally friendly lignin extraction process.

The invention discloses a CO2 oil displacement channeling sealing and in-situ curing integrated system and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The system is prepared from the following raw material components in percentage by weight: 0.05%-0.10% of a foaming agent, 0.1%-0.5% of a foaming synergist, 0.1%-0.8% of a stabilizer, 0.15%-0.30% of a first-order curing agent A, 0.25%-0.35% of a first-order curing agent B, 1.0%-2.0% of a second-order curing agent and the balance of water. The first-order curing agent A is resorcinol or hydroquinone; the first-order curing agent B is urotropine; the second-order curing agent is a choline chloride deep eutectic solvent. According to the CO2 oil displacement channeling sealing and in-situ curing integrated system, a unique second-order curing mechanism is adopted, CO2 channeling is inhibited, meanwhile, foam gel is formed through crosslinking of a stabilizer and a first-order curing agent, first-order curing is achieved, then under the ion exchange action of the second-order curing agent, calcium carbonate microcrystal formation is promoted, the mineralization channeling sealing rate is increased, and the CO2 oil displacement channeling sealing and in-situ curing integrated system is obtained. And forming a final cured product.

The present invention provides a deep eutectic solvent and its preparation and application. The deep eutectic solvent comprises choline chloride, p-toluenesulfonic acid, 1,4-butanediol, and water; wherein the molar ratio of choline chloride, p-toluenesulfonic acid, and 1,4-butanediol is 1-2:3-6:2-8, and the ratio of the total mass of choline chloride and p-toluenesulfonic acid to the mass of water is 20:9-11. When used for the pretreatment of Miscanthus sinensis, the deep eutectic solvent of the present invention can effectively remove hemicellulose and lignin from the cell walls of Miscanthus sinensis, thereby significantly improving the efficiency of its enzymatic hydrolysis of cellulose.

The invention provides a method for extracting and separating a general flavone crude extract from paeonia lactiflora stems and leaves, which comprises the following steps: adding a choline chloride-malic acid eutectic solvent into paeonia lactiflora stem and leaf powder, soaking, carrying out ultrasonic treatment, carrying out suction filtration to remove solid impurities to obtain a paeonia lactiflora stem and leaf extracting solution, diluting with ultrapure water, carrying out electrodialysis treatment, and drying to obtain the general flavone crude extract. A solid-liquid mixture containing solid residues is obtained in the middle chamber, precipitates are reserved after centrifugation, and the total flavone crude extract is obtained after blow-drying. The invention also provides application of the extracted and separated total flavone crude extract in preparation of medicines, cosmetics or functional foods for antioxidation, anti-inflammation, anti-tumor, cardiovascular protection or / and immunoregulation. The method is high in separation speed, high in separation rate and environment-friendly, flavone loss can be reduced to the maximum extent, and the yield of the total flavone crude extract is 0.27%-0.39%.

The present application relates to a kind of ultra-low VOC water-based paint and its preparation method, belong to paint technical field, and paint component includes modified acrylic-polyurethane hybrid emulsion, methyl linoleate, choline chloride-glycerol complex, modified nano titanium dioxide photocatalyst, PEG-40 stearate, thickening agent, preservative, pH regulator etc..The present application is prepared by special method modified acrylic-polyurethane hybrid emulsion, modified nano titanium dioxide photocatalyst, then with methyl linoleate, PEG-40 stearate, choline chloride-glycerol complex and other additives are prepared according to certain proportion Cooperation preparation paint, with the effect of fast curing and not cracking, very low VOC volatility, and good water resistance and acid and alkali resistance, strong adhesion.

The invention provides a modification method for improving the size stability of rubber wood and a modified material and application thereof, and relates to the field of rubber wood processing. The modification method comprises the following steps: 1, mixing choline chloride with a hydrogen bond donor compound containing carboxyl to obtain a DES solvent, and adding water to obtain a DES solution; secondly, the rubber wood plate is put into the DES solution in the first step, pressurized dipping treatment is carried out, and then the rubber wood plate is taken out and aired; and thirdly, the rubber wood treated in the second step is placed at the temperature of 150-160 DEG C to be subjected to heat treatment for 1-2 h, and the rubber wood DES modified material is obtained and placed under the room temperature condition to be balanced. The modification method is simple and easy to operate, the hygroscopicity of the rubber wood is remarkably reduced, the dimensional stability of the rubber wood is improved, the modification liquid can be repeatedly used, and cost saving and efficiency increasing are achieved. The environment-friendly and performance bottlenecks of a traditional method are solved, a new way is opened up for efficient value-added utilization of rubber wood, and the strategic requirement of sustainable material development is met.

The invention discloses an electrolyte containing a composite complexing agent and a preparation method thereof, and the method comprises the following steps: at room temperature, dissolving zinc bromide with a set concentration in a solvent to form a zinc bromide solution, continuously adding choline chloride with a set concentration, and stirring until the choline chloride is completely dissolved in the zinc bromide solution, a zinc bromide solution containing choline chloride is obtained; monitoring the pH value of the zinc bromide solution containing choline chloride, and adding macromolecular acid into the zinc bromide solution containing choline chloride until the pH value of the zinc bromide solution containing choline chloride is stabilized at a preset value; and adding betaine with a set concentration into the zinc bromide solution containing choline chloride with the pH value stabilized at a preset value, and continuously stirring to obtain the electrolyte containing the composite complexing agent. The problem that an existing complexing agent MEP is prone to being attached to the pipe wall and a flow channel, and consequently blockage is caused can be solved.

The invention relates to the technical field of biological extraction, in particular to a preparation method of selenium polysaccharide in cardamine violifolia, which comprises the following steps: extracting selenium polysaccharide in cardamine violifolia by using a deep eutectic solvent as an extraction solvent and adopting an ultrasonic method, and removing protein in the selenium polysaccharide by using an isoelectric precipitation method and an enzymolysis method, thereby obtaining the selenium polysaccharide in cardamine violifolia. Removing water, enzymolysis product amino acid, inorganic selenium and other impurities by a membrane separation concentration system to obtain cardamine violifolia selenium polysaccharide; wherein the eutectic solvent comprises choline chloride and malonic acid in a molar ratio of 1: 1-1: 3, and the water content is 40-60% (mass percent); the compound enzyme is prepared from bromelain and papain in a mass ratio of 1: 1. Protein in the selenium polysaccharide is removed by adopting deep eutectic solvent ultrasonic extraction and an isoelectric precipitation method combined with an enzymolysis method, enzymolysis product amino acid, inorganic selenium and other impurities are removed by adopting an ultrafiltration membrane separation and concentration system, the structure of the polysaccharide is not damaged, and the high-purity cardamine violifolia selenium polysaccharide is obtained.

The present invention belongs to the field of plant growth regulators, and specifically relates to a fruit coloring composition, a fruit coloring functional fertilizer and their applications. The fruit coloring composition comprises 1-aminocyclopropane carboxylic acid and a protective auxiliary agent, and the mass ratio of 1-aminocyclopropane carboxylic acid to the protective auxiliary agent is 1:0.1 to 200; the protective auxiliary agent is selected from 5-aminolevulinic acid, diethyl aminoethyl hexanoate or choline chloride. The present invention first discloses the use of protective auxiliary agents such as 5-aminolevulinic acid, which can effectively improve the adverse effects when ACC is applied alone, such as high dosage for coloring, easy to cause negative phenomena such as plant defoliation, fruit cracking, fruit drop and quality decline. When the effective application dosage is only 0.05 to 2.5 ppm, excellent coloring effect can be achieved. At the same time, the safety of exogenous application of ACC is effectively improved, and the planting effect of fruit and vegetable crops can be improved in aspects such as preventing fruit drop, increasing fruit sweetness, reducing phytotoxicity, and relieving the growth inhibition of stems, leaves and fruits.

The application belongs to the technical field of deep eutectic solvents, and particularly relates to a ternary deep eutectic solvent and preparation and application thereof. The ternary deep eutectic solvent is composed of choline chloride, 5-sulfosalicylic acid and gamma valerolactone according to a molar ratio of 1:4:(3-25). The strong hydrogen bond network structure between the green solvent system first destroys the ester bond between lignin and hemicellulose, then cuts off the beta-O-4 bond between lignin molecules, so as to separate lignin. Meanwhile, the deep eutectic solvent can improve the stability of carbon cations due to the conjugation effect between the lone pair electrons on the heteroatom oxygen and the central carbon in the molecular structure of gamma valerolactone, so as to inhibit the condensation reaction of lignin.

The invention discloses a method for synthesizing eutectic gel by in-situ extraction of lignin, and belongs to the technical field of gel materials.The method comprises the steps that choline chloride and acrylic acid are mixed, heated in an oil bath and stirred, and a eutectic solvent is obtained; cooling the solvent, adding dried and crushed wood powder, heating in an oil bath, extracting to obtain a mixed solution, and centrifuging to obtain supernate; adding a cross-linking agent and an initiator into the supernate, heating, stirring, and cooling to room temperature to obtain a pre-polymerized solution; and pouring the pre-polymerized liquid into a polytetrafluoroethylene mold, and carrying out ultraviolet curing to obtain the target gel. According to the method, the natural structure and active groups of the lignin are reserved to the maximum extent, the method is low-carbon, energy-saving, green and sustainable, in-situ lignin and a polymerization network cooperate, the gel is endowed with higher mechanical strength, environmental stability and functional diversity, and the limitation of existing lignin doped gel is broken through.