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Nano-metal or metal alloy catalyst and preparing method thereof
ActiveCN104549363ASimple methodExcellent catalytic performanceMetal/metal-oxides/metal-hydroxide catalystsElectron transmissionPorous graphene
The invention relates to a graphene aerogel-supported nano-metal or metal alloy catalyst and a preparing method thereof and belongs to the technical field of nanometer material application and catalysis. The preparing method is characterized by comprising the following steps: using graphene oxide and a metal compound as precursors, and obtaining a catalyst with small-size nano-metal and nano-metal alloy particles supported by a three-dimensional porous graphene aerogel by a continuous reduction process. In the catalyst, the varieties of the nano-metal and the nano-metal alloy are selected from Pt, Au, Ag, Pd, Ru, Rh, Pb, Fe, Co, Ni, Ir, Cu and the like; the varieties can be matched at will by any mixing ratio; the nanometer particles are about 2-6nm in size and uniformly distributed on a graphene sheet layer. Meanwhile, the graphene is assembled into a three-dimensional porous aerogel structure, the average size of pore diameters is 1-2 micrometers, high specific area, high electron transmission rate and high mass transmission rate can be obtained, and the agglomeration of the graphene and the nanometer particles is prevented. The composite has excellent catalytic performance, and the components of the catalyst can be selected according to different requirements.
Owner:JIANGSU UNIV
Lipidosome encapsulating epigallocatechin gallate and preparation method thereof
ActiveCN103610642AImprove stabilitySmall particle sizeOrganic active ingredientsAntinoxious agentsCholesterolLipid Body
The invention discloses a lipidosome encapsulating epigallocatechin gallate and a preparation method process. The lipidosome consists of the following components: soya bean lecithin, cholesterol, epigallocatechin gallate, buffer liquor and tween-80. The preparation method disclosed by the invention is simple in process and the EGCG lipidosome is prepared by a reverse evaporation method, and ultrasonic treatment is carried out on the lipidosome by a water bath ultrasonic instrument till the system is stable. The method can remarkably improve the stability of the EGCG lipidosome, and the grain size of the lipidosome can be effectively controlled and the encapsulation efficiency can be effectively improved by adjusting the ratio of the lipid components and the buffer liquor through the technical steps such as magnetic stirring, ultrasonic treatment and rotary evaporation. The EGCG lipidosome disclosed by the invention develops the application range of lipidosome, and the lipidosome is used as a carrier to encapsulate EGCG, so that the lipidosome is simple in preparation process, lower in demand on equipment, convenient to popularize and apply and can be industrially produced.
Owner:CHINA JILIANG UNIV
Nanometer-anion functional interior-wall latex paint and preparing method thereof
ActiveCN105153830AImprove stabilityGood scrub resistanceAntifouling/underwater paintsPaints with biocidesWater solubleHydroxyethyl cellulose
The invention discloses nanometer-anion functional interior-wall latex paint and a preparing method thereof. The interior-wall latex paint is prepared from, by weight, 120 parts to 150 parts of polymer emulsion, 3 parts to 5 parts of hydroxyethyl cellulose, 2 parts to 5 parts of water-soluble compound nanometer anion powder, 15 parts to 25 parts of antifreezing agents, 7 parts to 9 parts of film forming assistants, 3 parts to 6 parts of thickening agents, 3 parts to 5 parts of flatting agents, 180 parts to 220 parts of packing and 350 parts to 450 parts of water. According to the nanometer-anion functional interior-wall latex paint and the preparing method, as a formula structure is adjusted, and the water-soluble compound nanometer sterilizing powder is added, the interior-wall latex paint has the effects of continuously releasing anions, purifying air and improving body immunity, wherein the water-soluble compound nanometer anion powder is prepared in the mode that nanometer grinding is carried out on two or more kinds of crystals, quartz, vermiculite, medical stone and tourmaline. The interior-wall latex paint is environmentally friendly, efficient, safe, low in cost, high in practicability and broad in application prospect, energy is saved, and the anions can be efficiently released.
Owner:ZHANG ZHOU SAN PAINTS +1
Preparation method of palbociclib
ActiveCN104478874AHigh yieldRaw materials are cheap and easy to getOrganic chemistry2-PyridoneMethyl group
The invention relates to a preparation method of palbociclib. The method comprises the following steps: carrying out N-acetoacetylation reaction by using cyclopentylamine and an acetoacetylation agent to obtain N,N-di(acetoacetyl) cyclopentylamine (II), carrying out intramolecular condensation on N,N-di(acetoacetyl) cyclopentylamine (II) in the presence of an alkaline reagent to obtain N-cyclopentyl-3-acetyl-4-methyl-6-hydroxy-2-pyridone (III), enabling N-cyclopentyl-3-acetyl-4-methyl-6-hydroxy-2-pyridone (III) to react with a formylation reagent to prepare N-cyclopentyl-3-acetyl-4-methyl-5-formyl-6-chlorine-2-pyridone (IV), carrying out pyrimidine ring reaction by using N-cyclopentyl-3-acetyl-4-methyl-5-formyl-6-chlorine-2-pyridone (IV) and N-(5-(4-tert-butoxy carbonyl-1-hexahydropyrazinyl)-2-pyridyl) guanidine sulfate (V), and then hydrolyzing under the alkaline condition to prepare palbociclib. The preparation method of palbociclib is easily available in raw materials, short in process, simple and convenient to operate and safe and environmentally friendly in process.
Owner:XINFA PHARMA
General-grade blended doped transparent flame-retardant masterbatch used for PC material, and preparation method and applications thereof
The invention provides a general-grade blended doped transparent flame-retardant masterbatch used for PC material, and a preparation method and applications thereof. The general-grade blended doped transparent flame-retardant masterbatch used for PC material is prepared from 30 to 40% of PC resin, 10 to 30% of brominated epoxy resin, 5 to 15% of organosilicone, and 15 to 55% of bisphenol A, and is prepared via steps of blending and doping, and extrusion molding. The general-grade blended doped transparent flame-retardant masterbatch possesses excellent flame resistance; flame resistance is capable of reaching V0 grade; transparency is not influenced; a silicon-containing system is capable of improving aging resistance of transparent PC material, and mechanical properties, physical properties, and thermal properties are maintained; transparency of PC material is not influenced by adding of 5% of the general-grade blended doped transparent flame-retardant masterbatch into PC material; direct injection moulding can be realized; flame resistance of an obtained PC material is capable of reaching V0 grade; industrial production can be realized; and the general-grade blended doped transparent flame-retardant masterbatch is widely used.
Owner:DONGGUAN CALVIN PLASTIC & TECH
Manufacture method of arc rotary solid-wood stair beam
The invention relates to a preparation method used for an arc-shaped rotary solid wood stair beam, comprising the steps as follows: preparing solid wood small billets, secondary drying, colour separating and material selecting, material cutting, finger jointing, four-surface plane forming, thin sheet cutting, plate assembling, precise saw width-fixing, sanding thickness-fixing, explosive-proof trough cutting on single plate, assembling and forming; the assembling and forming comprise the steps as follows: 1: a die is firstly adjusted; 2: step (height and width of step) of the stair is determined; 3: the single plate is fixed; 4: when the layer number required by the stair and the thickness of the beam are achieved, the die is locked and pressurized. The stairs produced according to the invention have good stability and no rebounce, are not easy to deform, have smooth and graceful whole lines meeting the requirement of decoration, have high bearing strength, are firm and reliable, have strong impact force resistance, ensure the safety, have high preciseness of the ladder radian, can be adjusted according to the requirement, can be produced industrially and have quick effect.
Owner:谭正华
Method for extracting celery flavone with stepwise enzymolysis method
InactiveCN102603835AHigh yieldAbundant productionSugar derivativesSugar derivatives preparationSocial benefitsFreeze-drying
The invention discloses a method for extracting celery flavone with a stepwise enzymolysis method, belonging to the technical field of biology and food engineering. The method is characterized by comprising the following process steps of: (1) cleaning fresh celery, squeezing juice, filtering, storing a supernatant, and preparing a filter cake for later use; (2) adding water into the filter cake in the amount of 1.0-1.5 times that of the filter cake, stirring uniformly for 7-12 minutes, and adding cellulase for performing enzymolysis; (3) after enzymolysis, adding hemicellulase for performing second enzymolysis; (4) after enzymolysis, blanching, and filtering to obtain a filtrate for later use; and (5) mixing the filtrate obtained in the step (4) with the supernatant obtained in the step (1), and performing freeze drying to obtain celery flavone. In the method for extracting celery flavone with a stepwise enzymolysis method, celery flavone is prepared by performing stepwise enzymolysis and freeze drying and molding, the yield is high, and the content of crude celery flavone is over 85 percent. The method has a simple extracting process, is environmentally-friendly, can be applied to industrial production, and has very high economic value and social benefit.
Owner:SECOND INST OF OCEANOGRAPHY MNR
Y-shaped steel plate column-wrapping system
ActiveCN103469979AGuarantee product qualityEasy to operate on siteCovering/liningsFire proofingSheet steelKeel
The invention relates to a Y-shaped steel plate column-wrapping system, which comprises a base and a vertical column and an oblique column fixed on the base, wherein inner layers of the base, the vertical column and the oblique column are cement columns, and outer layers are compound steel plate panels; the cement columns are connected with the compound steel plate panels through connecting assemblies; the connecting assemblies include a steel horizontal adjusting substrate, a main steel keel, an arc-shaped auxiliary steel keel and an L-shaped connecting buckle. According to the technical scheme, the steel keel customized by adopting professional die sinking and relevant connecting pieces are adopted, so that the manufacturing quality is ensured, field construction operation is easy and convenient, and the problems of roughness and inaccuracy caused by conventional manual decoration are solved. Moreover, finished steel plates which are environment-friendly, fire-proof, safe, stable, high in quality, attractive, repeatedly detachable and installed and long in service lives are adopted for wrapping the columns, so that the entire system has the characteristics of industrial production, complete decoration, standard installation and decoration capitalization.
Owner:CHINA TOBACCO ZHEJIANG IND
Application of purple sweet potato polysaccharides in preparation of lung cancer resistant drugs
ActiveCN110156904ALow costIndustrialized productionOrganic active ingredientsAntineoplastic agentsBALB/cTumor Weight
The invention discloses application of purple sweet potato polysaccharides in preparation of lung cancer resistant drugs. The purple sweet potato polysaccharides are heteropolysaccharides extracted from Ningzi #4 purple sweet potatoes, and are mainly composed of three kinds of monosaccharides of xylose, rhamnose and glucose, wherein the xylose content is 84.92+ / -1.57%, the rhamnose content is 2.15%, the glucose content is 0.57%, and the average molecular weight is 0.82*10<4>Da. The purple sweet potato polysaccharides have effects of obviously inhibiting cell proliferation of lung cancer cellssuch as A549, H1299 and H460, the BALB / c mouse subcutaneous tumor volume subjected to purple sweet potato polysaccharide FsPSP-1 treatment is obviously reduced, and the tumor weight is obviously reduced. The invention provides novel application of the purple sweet potato polysaccharides in preparation of lung cancer resistant drugs, the application field of the purple sweet potato polysaccharidesis broadened, a material basis is provided for developing natural activity antitumor drugs, and the application has potential social benefits and economic benefits.
Owner:XUZHOU NORMAL UNIVERSITY
A y-shaped steel plate cladding column system
ActiveCN103469979BGuarantee product qualityEasy to operate on siteCovering/liningsFire proofingKeelMaterials science
Owner:CHINA TOBACCO ZHEJIANG IND
Nano-anion functional interior wall latex paint and preparation method thereof
ActiveCN105153830BImprove stabilityGood scrub resistanceAntifouling/underwater paintsPaints with biocidesStructural formulaHydroxyethyl cellulose
The invention discloses a nano negative ion functional interior wall latex paint and a preparation method thereof. The interior wall latex paint comprises the following components by weight: 120-150 parts of polymer emulsion, 3-5 parts of hydroxyethyl cellulose, 2-5 parts of water-soluble composite nano-anion powder, 15-25 parts of antifreeze, 7-9 parts of film aid, 3-6 parts of thickener, 3-5 parts of leveling agent, 180-220 parts of filler, 350-450 parts of water. In the present invention, by adjusting the formula structure and adding water-soluble composite nano-sterilizing powder, it has the effect of continuously releasing negative ions, purifying the air, and improving human immunity. The water-soluble composite nano-negative ion powder is passed through crystal, quartz, vermiculite, medical stone, Two or more kinds of tourmaline are made by nano-grinding. The interior wall latex paint of the invention is environment-friendly, high-efficiency, energy-saving, safe and low in cost, can efficiently release negative ions, has strong practicability and broad application prospects.
Owner:ZHANG ZHOU SAN PAINTS +1
A kind of nanometer metal or metal alloy catalyst and preparation method thereof
ActiveCN104549363BImprove mechanical propertiesLow densityMetal/metal-oxides/metal-hydroxide catalystsPorous grapheneElectron
The invention relates to a graphene airgel-supported nano-metal or metal alloy catalyst and a preparation method thereof, which belongs to the field of nano-material application and catalytic technology, and is characterized in that: graphene oxide and metal compounds are used as precursors, and a continuous reduction method is adopted , to obtain small-sized nano-metal and nano-metal alloy particles loaded three-dimensional porous graphene airgel catalyst. In the catalyst, the types of nano-metals and nano-metal alloys are selected from: Pt, Au, Ag, Pd, Ru, Rh, Pb, Fe, Co, Ni, Ir, Cu, etc.; the types and proportions can be arbitrarily matched. The size of the nanoparticles is about 2-6 nm, and they are evenly distributed on the graphene sheet. At the same time, graphene is assembled into a three-dimensional porous airgel structure with an average pore size of 1-2 microns, which can have a high specific surface area, high electron transport and mass transport rate, and prevent the agglomeration of graphene and nanoparticles. The composite material has excellent catalytic performance, and the components of the catalyst can be selected according to different needs.
Owner:JIANGSU UNIV
Formaldehyde absorbing material and preparation method thereof
InactiveCN104436985AStrong ability to remove formaldehydeIndustrialized productionOther chemical processesDispersed particle separationIron sulfateUltraviolet lights
The invention discloses a formaldehyde absorbing material and a preparation method thereof. The formaldehyde absorbing material is prepared from the following raw materials in parts by weight: 1-4 parts of a humectant, 0.2-0.8 part of a defoaming agent, 8-14 parts of ammonium iron sulfate, 3-9 parts of silicon dioxide, 15-25 parts of ceramic powder, 35-45 parts of deionized water and 1-4 parts of an ultraviolet light absorber. The preparation method comprises the following steps: 1. weighing the raw materials in the parts by weight, mixing ammonium iron sulfate, silicon dioxide, the ceramic powder, the deionized water and the ultraviolet light absorber, and stirring for 2-6 minutes at the speed of 10000-12000 revolutions per minute (rpm) to obtain a mixture I; 2. feeding the humectant into the mixture I, stirring and heating up to 40-50 DEG C, carrying out heat preservation for 1-3 minutes, feeding the defoaming agent, and continuously stirring to obtain a mixture II; 3, putting the mixture II into a double-screw extruder to extrude the particle absorbing material. The formaldehyde absorbing material is high in absorption capability and low in cost, and can be recycled.
Owner:DONGCHEN LEADER TESTING
Synthetic method of 2-imine-1,3-oxathiole compound
The invention provides a synthetic method of a 2-imine-1, 3-oxathiole compound. The synthetic method comprises the steps: mixing a 2-iodophenol compound, an isothiocyanate compound, alkali, copper salt, N, N, N' N'-tetramethylethylenediamine and water at the room temperature, reacting for 1-8 hours, carrying out extraction by virtue of ethyl acetate after reaction, combining organic layers, carrying out drying by virtue of anhydrous sodium sulfate, carrying out vacuum concentration to obtain a coarse product, and carrying out column chromatography isolation and purification on the coarse product to obtain the needed2-imine-1, 3-benzo oxathiole compound. Compared with the prior art, with the adoption of the synthetic method, as the water is used as a solvent, the environment is friendly; as the reaction can be carried out at the room temperature, the energy is saved, and the environment is protected; a target product is directly obtained within a short time by utilizing a one-pot method without the generation of a by-product and the needing of inert gas shielding, and the operation is simpler; the reaction is effective, the yield reaches up to 95 percent, and the synthetic method is suitable for industrial production.
Owner:ANHUI NORMAL UNIV
Extraction of Gemaconone from Rhododendron Thyme Thyme by Freezing
InactiveCN105198721BSimple processEasy to produceCarbonyl compound separation/purificationSolventBULK ACTIVE INGREDIENT
The invention provides a technology for extracting Germacrone from Rhododendron thymifolium Maxim leaves with a freezing method and belongs to the technical field of extraction and separation of effective active ingredients of plants. The technology comprises steps as follows: the Rhododendron thymifolium Maxim leaves are smashed to form powder, and volatile oil is extracted with a vapor distillation method firstly; the volatile oil is dehydrated with anhydrous sodium sulfate and placed in a low-temperature environment for freezing, crystals are separated out and filtered, the crystals are dissolved with ethyl alcohol and recrystallized after being washed with ethyl alcohol, filtering and washing are performed again, and high-purity Germacrone is obtained. A high performance liquid chromatography analyzer determines that the purity of Germacrone extracted and separated with the technology is 95%-98%, the yield can be up to 0.20%-0.50%. The technology is simple, short in process, low in power consumption and cost and high in yield and product purity and requires simple equipment; water and ethyl alcohol are taken as solvents, so that the technology is environment-friendly and clean and has little pollution; industrial production can be realized.
Owner:NORTHWEST NORMAL UNIVERSITY
A kind of production equipment and production method of high-purity nano metal superfine powder
InactiveCN101716683BParticle size controllableReasonable structural designHigh pressure oxygenHigh pressure
The invention discloses a production equipment and production method of high-purity nano metal ultrafine powder. The production equipment includes a raw material conveying and pretreatment device, a supersonic nozzle, a high-temperature liquid mist combustion fast reducer, an inert gas fast condensation device, a multi-stage A metal ultrafine powder classification device and a powder collection device, and the interior of each device is connected in turn to form a production circulation channel for producing high-purity nano metal ultrafine powder. The tail of the channel is connected with an induced draft fan that communicates with the inside; the production method includes steps: 1. Raw material transportation and pretreatment; 2. Metal oxide atomization and transportation; 3. High temperature rapid reduction reaction; 4. Rapid condensation; , and then form a high-temperature reducing atmosphere with hydrocarbon fuel and high-pressure oxygen-enriched, and finally produce spherical nano-metal ultrafine powder. The invention has reasonable design, wide range of applicable raw materials, short production process and high efficiency, and can realize continuous industrial production.
Owner:XIAN HUIWEI NANO METAL MATERIALS
Separation equipment and process method for purifying high-purity EPA-ee from fish oil
PendingCN114685266ARecycling is simpleGood separation effectCarboxylic compound separation/purificationChromatography columnProcess engineering
The separation equipment comprises an outer fixing frame, an infusion pump system is arranged on the fixing frame, a valve control system is arranged on the infusion pump system, four chromatographic columns are symmetrically arranged on the two sides of the fixing frame, an on-line monitoring device is arranged at one end of the fixing frame, and a valve control system is arranged on the valve control system. The method has the beneficial effects that the filler separation effect is good, the filler can be recycled, the environmental pollution is small, the super chromatographic purification process is filled, the product concentration is high, the concentration cost is low, the weaving risk is small during product concentration, and the super chromatographic purification process is low in production cost, good in product quality, high in EPA yield, environmentally friendly and beneficial to industrial production.
Owner:BEIJING CHUANGXIN TONGHENG SCI & TECH +1
Salty and sweet olive preserves and production method thereof
ActiveCN102511622BFull of nutritionRich varietyConfectionerySweetmeatsCooking & bakingMarket development
The invention discloses salty and sweet olive preserves and a production method thereof. The production method includes processing procedures of fresh olive sorting, selecting, peeling, salting, grading, separating, washing, preserving, baking, separating, packaging and putting in storage. The finished salty and sweet olive preserves are carefully made, have unique shapes, are bright-colored, taste delicate and have bright market development outlook.
Owner:福州市食品工业研究所
Plant sterilization and insect repellent functional interior wall latex paint and preparation method thereof
ActiveCN105199462BImprove stabilityGood scrub resistanceAntifouling/underwater paintsPaints with biocidesStructural formulaPolymer emulsion
The invention discloses a plant-sterilizing and insect-repelling functional interior wall latex paint and a preparation method thereof. The interior wall latex paint comprises the following components by weight: 120-150 parts of polymer emulsion, 3-5 parts of hydroxyethyl cellulose, 2-5 parts of plant-based composite nano-bactericide powder, 15-25 parts of antifreeze, and 7-9 parts of film aid, 3-6 parts of thickener, 3-5 parts of leveling agent, 180-220 parts of filler, 350-450 parts of water. The present invention adjusts the formula structure and adds plant-based composite nano-bactericidal powder, wherein the component plant-based composite nano-bactericidal powder is dehydrated by infrared dehydration technology and nano prepared by production technology. The bactericidal powder is a green, environmentally friendly, and healthy bactericidal material, which is non-toxic and harmless to the human body. The interior wall latex paint of the present invention is low in cost, bactericidal, antibacterial, anti-mildew, and insect repellent are efficient and durable, with strong practicability and wide application prospects. .
Owner:ZHANG ZHOU SAN PAINTS +1
A kind of preparation method of palbocyb
ActiveCN104478874BHigh yieldRaw materials are cheap and easy to getOrganic chemistry2-PyridoneMethyl group
The invention relates to a preparation method of palbociclib. The method comprises the following steps: carrying out N-acetoacetylation reaction by using cyclopentylamine and an acetoacetylation agent to obtain N,N-di(acetoacetyl) cyclopentylamine (II), carrying out intramolecular condensation on N,N-di(acetoacetyl) cyclopentylamine (II) in the presence of an alkaline reagent to obtain N-cyclopentyl-3-acetyl-4-methyl-6-hydroxy-2-pyridone (III), enabling N-cyclopentyl-3-acetyl-4-methyl-6-hydroxy-2-pyridone (III) to react with a formylation reagent to prepare N-cyclopentyl-3-acetyl-4-methyl-5-formyl-6-chlorine-2-pyridone (IV), carrying out pyrimidine ring reaction by using N-cyclopentyl-3-acetyl-4-methyl-5-formyl-6-chlorine-2-pyridone (IV) and N-(5-(4-tert-butoxy carbonyl-1-hexahydropyrazinyl)-2-pyridyl) guanidine sulfate (V), and then hydrolyzing under the alkaline condition to prepare palbociclib. The preparation method of palbociclib is easily available in raw materials, short in process, simple and convenient to operate and safe and environmentally friendly in process.
Owner:XINFA PHARMA
Resin nanocomposite, method for preparing the same, and method for treating sewage with the same
ActiveUS20180015441A1Easy to controlIndustrialized productionOther chemical processesWater treatment compoundsNanometrePolystyrene
A resin nanocomposite, including a resin skeleton structure and nanoparticles. The resin skeleton structure is an aminated polystyrene. The nanoparticles are dispersed in the resin skeleton structure. The specific area of the nanocomposite is between 50 and 300 m2 / g, and the pore size thereof is between 5 and 40 nm. The invention also provides a method for preparing the resin nanocomposite, the method including: 1) mixing and dissolving a linear polyethylene with a chloromethyl polystyrene or a polyvinyl chloride to yield a polymer solution, and adding the nanoparticles to the polymer solution; 2) adding an alcohol solution to liquid nitrogen; adding the mixed solution dropwise to the liquid nitrogen to yield a mixture; allowing the mixture to stand; collecting, washing and drying resin beads to yield a composite material; and 3) adding the composite material to an amine solution for reaction, and washing and drying the resulting product.
Owner:NANJING UNIV
A lead-based negative electrode material
ActiveCN112234190BSimple preparation processIndustrialized productionNegative electrodesSecondary cellsElectrical batteryPhysical chemistry
The invention discloses a lead-based negative electrode material, which is CsPb x m 1‑x Br y‑z N z ; Wherein: M is one or both of tin, germanium, antimony, copper, aluminum, magnesium, the number of moles of x is 0.001-0.3; the number of moles of y is 1-6; N is oxygen, fluorine, chlorine, iodine One or both of them, the molar number of z is 0.001‑1; M and N exist in the form of ions CsPb x m 1‑ x Br y‑z N z In; M and N are from one compound, two compounds or more compounds. The lead-based negative electrode material has good electrochemical properties and has good application prospects in the field of batteries.
Owner:CHINA JILIANG UNIV
Application of purple sweet potato polysaccharide in the preparation of anti-lung cancer drugs
ActiveCN110156904BLow costIndustrialized productionOrganic active ingredientsAntineoplastic agentsBALB/cTumor reduction
The invention discloses application of purple sweet potato polysaccharides in preparation of lung cancer resistant drugs. The purple sweet potato polysaccharides are heteropolysaccharides extracted from Ningzi #4 purple sweet potatoes, and are mainly composed of three kinds of monosaccharides of xylose, rhamnose and glucose, wherein the xylose content is 84.92+ / -1.57%, the rhamnose content is 2.15%, the glucose content is 0.57%, and the average molecular weight is 0.82*10<4>Da. The purple sweet potato polysaccharides have effects of obviously inhibiting cell proliferation of lung cancer cellssuch as A549, H1299 and H460, the BALB / c mouse subcutaneous tumor volume subjected to purple sweet potato polysaccharide FsPSP-1 treatment is obviously reduced, and the tumor weight is obviously reduced. The invention provides novel application of the purple sweet potato polysaccharides in preparation of lung cancer resistant drugs, the application field of the purple sweet potato polysaccharidesis broadened, a material basis is provided for developing natural activity antitumor drugs, and the application has potential social benefits and economic benefits.
Owner:XUZHOU NORMAL UNIVERSITY
Process for extracting germacrone from rhododendron thymifolium leaf with silica gel method
InactiveCN105237377ASimple preparation processLow costCarbonyl compound separation/purificationEthyl acetateSolvent
The invention provides a method for extracting germacrone from rhododendron thymifolium leaf with a silica gel method, and relates to the technical field of plant effective active component extraction. According to the invention, rhododendron thymifolium leaf is crushed and is extracted with a steam distillation method, such that volatile oil is obtained; the volatile oil is dehydrated with anhydrous sodium sulfate, and is added into a silica gel column; elution is carried out with a mixed solvent of petroleum ether and ethyl acetate; part of the fraction is collected, crystallized and filtered; the crystals are washed with petroleum ether, and are dissolved with petroleum ether; recrystallization is carried out, and filtering and washing are carried out, such that high-purity germacrone is obtained. As a result of determination with high-performance liquid chromatography, the germacrone extracted and separated in the invention has a purity of 95-98% and a yield reaching 0.40-0.70%. The method provided by the invention has the advantage of simple process, low cost, high product yield and high product purity. The method is suitable for industrialized productions.
Owner:NORTHWEST NORMAL UNIVERSITY
Method for preparing antioxidant peptide through ultrasonic-microwave synergetic enzymatic hydrolysis
The invention relates to a method for preparing an antioxidant peptide through ultrasonic-microwave synergetic enzymatic hydrolysis. The method comprises the following steps: (1), preparing an enzymatic hydrolysis substrate; (2), adding an alkali protease for enzymatic hydrolysis; (3), carrying out ultrasonic-microwave assistant enzymatic hydrolysis; and (4), after enzyme inactivation, centrifuging and separating a reaction solution, taking supernatant, freezing and drying to obtain antioxidant peptide powder. The method has the advantages that the ultrasonic technology, the microwave technology and the enzymology biology technology are combined. Compared with the peptide prepared by the conventional method, no chemical reaction is carried out, the change rate of bioactive substances is reduced, the utilization rate of organic solvents is reduced, the enzymatic hydrolysis time is shortened after the ultrasonic-microwave assistant enzymatic hydrolysis is carried out, and a test proves that the antioxidant capacity of the salmon peptide is remarkably enhanced. The method is simple in process, can be used for industrial production and has higher economic and social benefits.
Owner:SHANGHAI OCEAN UNIV
Technology for extracting Germacrone from Rhododendron thymifolium Maxim leaves with freezing method
InactiveCN105198721ASimple processEasy to produceCarbonyl compound separation/purificationSolventBULK ACTIVE INGREDIENT
The invention provides a technology for extracting Germacrone from Rhododendron thymifolium Maxim leaves with a freezing method and belongs to the technical field of extraction and separation of effective active ingredients of plants. The technology comprises steps as follows: the Rhododendron thymifolium Maxim leaves are smashed to form powder, and volatile oil is extracted with a vapor distillation method firstly; the volatile oil is dehydrated with anhydrous sodium sulfate and placed in a low-temperature environment for freezing, crystals are separated out and filtered, the crystals are dissolved with ethyl alcohol and recrystallized after being washed with ethyl alcohol, filtering and washing are performed again, and high-purity Germacrone is obtained. A high performance liquid chromatography analyzer determines that the purity of Germacrone extracted and separated with the technology is 95%-98%, the yield can be up to 0.20%-0.50%. The technology is simple, short in process, low in power consumption and cost and high in yield and product purity and requires simple equipment; water and ethyl alcohol are taken as solvents, so that the technology is environment-friendly and clean and has little pollution; industrial production can be realized.
Owner:NORTHWEST NORMAL UNIVERSITY
A kind of preparation method of porous carbon electrode material
ActiveCN111547705BLow costSimple preparation processHybrid capacitor electrodesCell electrodesPorous carbonThiourea
Owner:CHINA JILIANG UNIV
Graphene conductive paste for textile-based sensor and preparation method of graphene conductive paste
ActiveCN112908515AImprove electrical conductivityImprove thermal response performanceNon-conductive material with dispersed conductive materialCable/conductor manufactureWoven fabricPolymer chemistry
The invention relates to the technical field of graphene conductive materials, and in particular relates to graphene conductive paste for a textile-based sensor. The graphene conductive paste is prepared by blending a graphene solution and a water-soluble polyurethane solution according to a certain proportion, the graphene conductive paste is a solution in which the effective content ratio of graphene to polyurethane is 1% to 6%, the graphene solution is prepared by adding a dispersing agent in the process of adding a reducing agent into a graphene oxide solution for reduction, and the concentration mass percent of the graphene solution is 0.1 to 5%. The invention further discloses a preparation method of the graphene conductive paste for the textile-based sensor. The graphene conductive paste prepared by the invention can be coated on textiles, such as yarns and fabrics, so that the textiles have a sensing function, have excellent conductivity, washing resistance and good thermal responsiveness, and the graphene conductive paste is worthy of wide popularization and application.
Owner:QINGDAO UNIV
Formaldehyde absorbing material and preparing method thereof
Disclosed are a formaldehyde absorbing material and a preparing method thereof. The formaldehyde absorbing material comprises, by weight, 1 to 4 parts of glycerine, 0.2 to 0.8 part of antioxidant, 8 to 14 parts of polyacrylamide, 3 to 9 parts of silica, 15 to 25 parts of plastic powder, 35 to 45 parts of deionized water, 1 to 4 parts of ultraviolet absorbent, 1 to 5 parts of carbon fiber, 2 to 4 parts of preservative, and 12 to 18 parts of glass fiber. The preparing method includes mixing the polyacrylamide, the silica, the plastic powder, the carbon fiber and the glass fiber, putting mixture in a reactor, heating the reactor at 1000 to 1200 DEG C for 10 to 15 min to obtain first mixture; adding the glycerine, the antioxidant, the deionized water, the ultraviolet absorbent and the preservative into the first mixture, performing ultrasonic treatment after mixing to obtain second mixture, and extruding the second mixture in a double-screw extruder to obtain particle absorbing material, the formaldehyde absorbing material. The formaldehyde absorbing material is high in absorbing rate and helps effectively ensure physical health.
Owner:DONGCHEN LEADER TESTING
Technology for removing urease from whole soybeans
ActiveCN111671050AGood lookingHigh removal rateFood ingredient functionsEngineeringProcess engineering
The present invention relates to the technical field of processing and particularly to a technology for removing urease from whole soybeans. The technology for removing urease from whole soybeans comprises the following steps: S1, washing clean soybeans, soaking the soybeans in an ethanol solution with a mass concentration of 3-5% at a weight of 4-6 times of the weight of the soybeans, adding additives to the ethanol solution, and soaking the soybeans for 20-30 min; S2, soaking the soybeans soaked in the above step S1 for 20-40 min in clean water and washing the soybeans for 1-3 times at a temperature of the clean water at 40-50 DEG C; and S3, placing the soybeans washed in the above step S2 at 100-115 DEG C for baking for 2-3.5 h, conducting heating to 120-130 DEG C for baking for 1-2 h,conducting cooling quickly and then conducting filling. The removing technology is simple, a removal rate of the urease in the soybeans is high, the urease activity is low, nutrient components of thesoybeans are not damaged, the soybeans are not damaged in appearances, full in particles, shiny, and bright yellow in color, and besides, the added additives can also shorten baking time and improve work efficiency.
Owner:广州同康生物科技有限公司
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