47results about How to "Non-biodegradable" patented technology

The invention discloses a method for separating cynomorium songaricum polysaccharides through deep-eutectic solvent/salt two-aqueous-phase extraction. The method comprises the following main steps: adding a deep-eutectic solvent with a certain moisture content into cynomorium songaricum powder, fully leaching at room temperature, performing ultrasonic pulse treatment under ice-bath conditions, andcentrifuging to collect the supernatant so as to obtain a crude cynomorium songaricum polysaccharide extract; adding dipotassium phosphate into the crude cynomorium songaricum polysaccharide extract,mixing, dissolving, standing and centrifuging to form a two-aqueous-phase extraction system, wherein the upper phase is the deep-eutectic solvent, and the lower phase is a solution containing sugar and dipotassium phosphate; performing freeze drying recovery on the upper phase; and dialyzing the lower phase, and performing freeze drying, thereby obtaining the cynomorium songaricum polysaccharide.The deep-eutectic solvent adopted in the invention has the advantages of being non-toxic, excellent in biodegradability and biocompatibility and low in melting point, the extraction, separation and purification operations are simple, the conditions are mild, the separation efficiency is high, the yield of the cynomorium songaricum polysaccharide is high, the deep-eutectic solvent can be recycled,the production cost is effectively reduced, and the method is suitable for large-scale industrial production.

The invention discloses a food mechanic abluent of on-site food machine and pipe line, which comprises the following parts: 1-8% at least one component of proteinase, lipase or amylase, alkyl glycoside as surface activator, food-grade C12-C18, water loss sorbitol acid grease, polyoxyethylene water loss sorbitol acid grease, 0.5-1% at least one component of polyglycerol fatty acid ester or geoceric acid polyoxyethylene ester, 10-75% at least one component or two components of sodium carbonate or sodium hydrogen carbonate of alkali adjuvant.

The invention discloses high-strength high-softness high-antibacterial-performance paper for daily use and a preparation method thereof. According to the method, chitosan powder is dissolved in a lactic acid water solution, chitosan is completely dissolved, a bronopol solution is added into the mixture to be evenly mixed, then a negative ion polyacrylamide solution is dripped, a lactic acid/chitosan-bronopol nano microsphere compound is prepared through reaction, the obtained compound is sprayed to the surface of paper for daily use, and then the high-strength high-softness high-antibacterial-performance paper for daily use is obtained. By the utilization of the lactic acid/chitosan-bronopol nano microsphere compound, the paper for daily use has high strength, high antibacterial performance and high softness, the three defects that according to common paper for daily use, strength and softness are low, and no antibacterial performance exists are overcome, and high application value is obtained.

The invention discloses a method for inhibiting a dysosma versipellis explant from contamination and browning. The method comprises the following steps: transplanting a wild dysosma versipellis rhizome which is more than five-year old into clean river sand matrix for preculture; soaking a stem growing strongly into N-long-chain thiocarboxylic acid glycine betaine, washing with distilled water, and brushing the dirt on the surface of the explant; treating the explant by use of anion photocatalysis, sterilizing with sodium hypochlorite, washing with sterile water, sucking moisture on the surface by use of aseptic filter paper until the surface is dry, cutting into squares, and soaking in a heavy metal complexing agent; inoculating onto a modified MS medium for dark culture for two weeks; and then performing bright culture. The method can be used of effectively preventing the dysosma versipellis explant from contamination and browning and providing sufficient aseptic explants for the tissue culture research of the medicinal plant-dysosma versipellis, so that the follow-up tissue culture success rate is ensured, the cost is low and the method is suitable for industrial production.

The invention relates to the fields of biological functional materials and nanotechnologies and particularly relates to a novel amphiphilic polymer nano medicine carrying micelle which is proper in particle size distribution range, stable in encapsulation rate and medicine carrying rate, high in biological safety and capable of increasing bioavailability of ursolic acid and a structural modifier thereof. The technical scheme of the invention provides a medicine carrying micelle capable of increasing bioavailability of ursolic acid and a structural modifier thereof. The medicine carrying micelle is characterized in that the preparation method comprises the following steps of 1, synthesizing PLGA-PEG-PLGA (poly(lactic-co-glycolic acid)-polyethylene glycol-poly(lactic-co-glycolic acid)) by using a ring opening polymerization method; 2, simultaneously dissolving an insoluble drug and a triblock copolymer into an organic solvent to prepare an oil phase; 3, dropwise adding the oil phase into a water phase stirred at a high speed; 4, stirring until the oil phase is completely volatilized, and filtering a membrane in the solution to obtain a medicine carrying nanoparticle contained ultrapure water solution; freezing and drying to obtain the medicine carrying micelles.

The invention belongs to the technical field of high polymer materials and relates to a polyaspartic acid type ice point regulator preparation method by taking polyaspartic acid and polyaspartic acid derivatives as the raw materials. A macromolecular polyaspartic acid type grafted copolymer is provided, and is synthesized by a midbody polysuccinimide of polyaspartic acid amino acid and a graft, wherein the graft comprises alcohol amine type substances, such as ethanol amine, isopropanolamine, diglycolamine, diethanol amine, 2-amino-1-butanol, N-(3-aminopropyl)diethanol amine, 3-amino propanol, 2-(methylamino)ethanol, D-phenylglycinol, diisopropanol amine and N-(2-ethoxy)ethylenediamine. The copolymer can be taken as an environment-friendly macromolecular ice point regulator, and has high application value in the energy saving field of a dynamic ice-slurry cold-storage air-conditioning system and the field of food additives and medical fields.

The invention is applicable to the field of biomedical materials, and provides an additive-manufactured porous polyetheretherketone scaffold and a biological activity improvement method and application thereof. The biological activity improvement method of the additive-manufactured porous polyetheretherketone scaffold comprises the following steps: taking an additive-manufactured porous polyetheretherketone scaffold, and carrying out surface sulfonation treatment on the porous polyetheretherketone scaffold to obtain a sulfonation-treated porous polyetheretherketone scaffold; and through ultraviolet grafting, loading a composite material blending methacrylic acid esterified chitosan and cage-type polysilsesquioxane nanoparticles onto the surface of the sulfonation-treated porous polyetheretherketone scaffold so as to obtain an improved porous polyetheretherketone scaffold. Through additive manufacturing and ultraviolet grafting, the composite material blending the methacrylic acid esterified chitosan and the POSS nanoparticles is loaded on the surface of the sulfonation-treated porous polyetheretherketone scaffold, so that the biological activity and the osteogenesis integration capability of the scaffold can be enhanced.

The invention provides a carbon dot/chitosan detector with a dual detection function, which is established by an electrodeposition method. A preparation method of the carbon dot/chitosan detector with the dual detection function comprises the following steps: 1) preparing a carbon dot/chitosan compound electrodepositing solution; and 2) electrodepositing carbon dot/chitosan and establishing the detector. The carbon dot/chitosan detector is applied to dual-function detection. The carbon dot/chitosan detector has the advantages of simple preparation method, convenience in operation, mild preparation condition, easiness in control, simple equipment, energy conservation, environment friendliness, low cost and the like; the established carbon dot/chitosan detector has two detection functions of electrochemical detection and fluorescence detection at the same time, so that the effect of detecting some substances can be better achieved; and the carbon dot/chitosan detector has a good application prospect in the fields of detectors and biosensors.

The invention provides a method for extracting ursolic acid from Cynomorium songaricum by using a eutectic solvent/salt aqueous two-phase system. The method comprises the following steps: with the eutectic solvent/salt aqueous two-phase system as an extraction solvent, subjecting the powder of Cynomorium songaricum to ultrasonic extraction at first so as to obtain a eutectic solvent phase containing ursolic acid, then carrying out pre-extraction by using a reversed micelle solution, and carrying out standing for layering, wherein an upper phase is a reversed micelle phase containing ursolic acid; and adding absolute ethyl alcohol into the reversed micelle phase containing ursolic acid for extraction, then carrying out standing and layering, wherein a lower phase is an absolute ethyl alcohol phase containing ursolic acid, and subjecting the absolute ethyl alcohol phase containing ursolic acid to pressure-reduced concentration and vacuum drying so as to obtain ursolic acid powder. According to the invention, the eutectic solvent/salt aqueous two-phase system is employed for extraction of the powder of Cynomorium songaricum, and reversed micelle extraction is employed for separation of ursolic acid in the eutectic solvent, so the method has the characteristics of short phase-splitting time, low viscosity, small possibility of emulsification and the like; the eutectic solvent and the reversed micelle solvent can be cyclically utilized; and the method is low in extraction cost, high in the purity and yield of a ursolic acid product and is a green, highly-efficient and simple separation method.

The invention discloses immobilized functional filler of an artificial wetland. The immobilized functional filler comprises the following chemical components in parts by weight: 0.20-2.99 parts of CaO, 29.30-38.98 parts of Mg, 33.69-49.76 parts of SiO2, 0.38-2.01 parts of Al2O3, 0.76-4.82 parts of Fe2O3, 0.23-0.68 part of Cr2O3, 1.94-4.44 parts of FeO, 0.01-0.05 part of TiO2, 0.05-0.14 part of MnO, 0.11-0.19 part of K2O+Na2O, 0.01-0.04 part of P2O3, 6.52-13.59 parts of H2O<+> and 0.22-6.73 parts of CO2. The immobilized functional filler disclosed by the invention has a very large specific surface area and a lot of microorganisms can grow on the surface in an immobilized manner; the content of active bacteria is more than or equal to 1 million/gram; and the microorganisms in a biological film can be used for absorbing and decomposing organic matters in water, so that sewage is purified.

The invention belongs to the technical field of petroleum industry, and particularly relates to a preparation method of base oil of a drilling fluid. The method prepares the base oil of the drilling fluid through the steps: impurity removal; water removal; enzymatic pre-esterification; alkali catalytic esterification; distillation and the like. The method is environment-friendly and pollution-free in reaction and mild in reaction condition. As the pre-esterification time is shorter, the use level of alcohol is less, so that the alcohol has less influence on the activity of enzymes. The enzymatic catalyst can be repeatedly used, so that the cost is lowered, the reaction time is saved, and the production efficiency and the ester conversion ratio are improved. The base oil of the drilling fluid prepared by the invention is safe and energy-saving biological oil which is high in flash point and ignition point. The ignition point is higher than 93 DEG C, and the flash point is not lower than 130 DEG C. The base oil of the drilling fluid is safe to transport and use.

The invention provides a preparation method of a natural biofilm carrier for surfactant wastewater treatment. The method mainly comprises the following steps: (1) firstly, extracting gelatin from waste leather leftover materials through alkaline hydrolysis, and then modifying the gelatin by utilizing methacrylic anhydride to prepare modified gelatin with carbon-carbon double bonds on a molecular chain; and (2) preparing the natural biofilm carrier by using the modified gelatin in the step (1) as a raw material through a freezing-ultraviolet radiation polymerization method. The method provided by the invention has the advantages of simple process, high economy and environmental friendliness. The biofilm carrier prepared by the method is a porous material prepared by taking natural biomass as a raw material, so that the problem of micro-plastic pollution caused by synthesizing a polymer biofilm carrier can be avoided; and the structure of the biofilm carrier contains an-glyci argininene-aspartic acid (RGD) sequence capable of promoting microbial adhesion, so that the biofilm carrier has unique advantages as a biofilm carrier and has a good market application prospect.

The invention relates to the field of medical materials, and discloses a preparation method of doxorubicin nanoparticles with folate-modified chitosan as a carrier. The preparation method includes thesteps that firstly, folate active ester is prepared, and the folate-modified chitosan is obtained by an amide reaction; a prepared doxorubicin solution and a polydopamine solution are added to a folate-modified chitosan solution, and doxorubicin-folate-chitosan is obtained; and finally, a nucleic acid aptamer AS1411 is mixed with the doxorubicin-folate-chitosan, centrifuged, frozen and dried to obtain the doxorubicin nanoparticles with the folate-modified chitosan as the carrier. According to the preparation method, through preparation of polymer nanoparticles embedded with anticancer drugs,an efficient therapeutic method integrated with tumor thermotherapy and targeting can be realized, the stability of the drugs is improved, active targeting is achieved, the ability to bind to a receptor is improved, and thus the therapeutic effect on cancer cells is greatly improved.

The invention discloses a preparation method of a road dust suppression film-forming agent. According to the method, an aqueous polymerization method is adopted, vinyl acetate, methyl acrylate, ethylacrylate, acrylic acid and the like are used as main monomers, and hydroxyethyl acrylate, hydroxypropyl acrylate, acrylamide, dimethyl diallyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride and the like are used as auxiliary monomers; use of water-soluble peroxides as initiators, the road dust suppression water-based polymer film-forming agent with resolubility is synthesized;the product has excellent bonding performance on raised dust on a road; the road dust can be effectively inhibited at low use concentration; particles formed by the water solution and dust are easilyremoved by a road cleaning machine, and can be dissolved again by rainwater or sprinkled water after forming a film with the dust on a road, so that the cleanness of the road is ensured, and the prepared water solution has biodegradability, does not influence the growth of trees on two sides of the road, does not harm pedestrians on the road and the environment, and does not cause secondary pollution.

The invention discloses a novel environment-friendly Bordeaux mixture germicide containing a structural modification-treated shell powder as a main component. The germicide is prepared by taking the structural modification-treated shell powder as a main body matched with CuSO4 and proper mount of water according to a proper proportion, thus forming a marine organism-based micro-nano novel environment-friendly fruit and vegetable germicide. The novel environment-friendly Bordeaux mixture germicide is environment-friendly without pollution, convenient for biodegradation, and has advantages of easily obtained raw materials, waste use, broad, durable germ killing effect, low cost and the like, mealwhile the novel environment-friendly Bordeaux mixture germicide has a good disease prevention action for plants in growth period, is safe and harmless to fruit and vegetable growth and capable of reducing loss and improving yield, and has a good application and proportion value agriculturally.

The invention discloses a bath liquid containing plant essence and a preparation method thereof. The bath liquid comprises 12-24 parts of honey, 16-30 parts of myristic acid, 8-27 parts of potassium hydroxide, acrylamidopropyl trimethyl chloride 11-20 parts of ammonium chloride and 60-80 parts of deionized water; the preparation method is to add deionized water into the chemical tank, and then add honey, myristic acid, potassium hydroxide and acrylamidopropyl trimethyl chloride respectively After the ammonium is stirred evenly, filter it with a 200-mesh nylon sieve, and let it stand for later use. The advantages are that the bath liquid has good moisture absorption and moisturizing properties, bactericidal and antibacterial effects, is cheap, and has good water solubility, stability, conditioning, emulsification, non-toxicity, easy biodegradation, and environmental protection.

The invention discloses a soda salinized soil modifier which consists of the following raw materials in parts by mass: 40-50 parts of calcium silicate, 35-50 parts of humic acid, 1-5 parts of gluconicacid, 10-20 parts of glucose acetate, 10-15 parts of acetylated cellulose, 1-5 parts of ferrous lactate, 0.5-1 part of zinc gluconate, and 0.5-5 parts of ammonium glucurate. The modifier is capable of regulating a soil structure, reducing salt, removing alkali, loosening soil, promoting crop growth and increasing yield, and has the advantages of no toxicity, biodegradability and no secondary pollution, is easy and simple to implement, ecological and environmentally friendly, does not introduce inorganic acid radical ions, does not cause secondary salinization of the soil, is capable of regulating a soil structure, reducing salt, removing alkali, improving the soil fertility and improving the soil microbial activity, provides nutrients for plant growth, enhances disease resistance of cropsand increases the crop yield. Tests indicate that the relative reduction rate of pH of the soil is 8.3%, the relative reduction rate of the soil alkalinity ESP is 48.3% and the average yield of planted maize is increased by 41.2% after the soda salinized soil modifier is applied.

The invention discloses an application of an efficient inhibitor 5'-ATP-2Na in magnesite direct flotation decalcification, and belongs to the field of magnesite flotation decalcification inhibitors. According to the application, in the magnesite direct flotation decalcification technological process, the efficient inhibitor 5'-ATP-2Na (disodium adenosine-5'-triphosphate hydrate) is added in magnesite ore pulp preparation, wherein the molar concentration of the added efficient inhibitor 5'-ATP-2Na in the magnesite ore pulp is 0.8 mmol/L-1.3mmol/L and the mass percentage concentration of magnesite in the magnesite pulp is 15-30%. The efficient inhibitor 5'-ATP-2Na is used for magnesite direct flotation decalcification, under a sodium oleate or oleic acid flotation system, by adding the efficient inhibitor 5'-ATP-2Na, the flotation difference between the magnesite and the calcium-containing gangue mineral dolomite is enlarged, efficient separation of the magnesite and the dolomite is achieved, and therefore magnesium impurities are reduced, the quality of magnesite concentrate products is improved, and a novel flotation inhibitor is provided for flotation separation of high-calcium low-grade magnesite.