3873 results about "Beta-Cyclodextrins" patented technology

The invention provides a plant nutrient solution for soilless culture of tomato. The plant nutrient solution is prepared by the following raw materials in part by weight: 2 to 4 parts of potassium nitrate, 3 to 8 parts of calcium nitrate, 1 to 5 parts of magnesium sulfate, 1 to 3 parts of potassium phosphate, 1 to 2 parts of potassium sulphate, 1 to 2 parts of monopotassium phosphate, 0.1 to 0.15 part of Na2-EDTA, 0.05 to 0.1 part of Fe-EDTA, 0.01 to 0.05 part of molybdic acid, 0.01 to 0.03 part of manganese sulfate, 0.3 to 0.5 part of sodium tetraborate, 2 to 4 parts of superphosphate, 0.003 to 0.01 part of zinc sulfate, 0.001 to 0.002 part of copper sulfate, 0.001 to 0.003 part of ammonium nitrate, 1 to 3 parts of urea, 1 to 2 parts of organic acid, 0.5 to 1 part of beta cyclodextrin, 0.05 to 0.1 part of vitamin B, 2 to 4 parts of chitosan, 1 to 2 parts of nicotinamide, 0.5 to 2 parts of amino acid, 0.3 to 0.5 part of diethyl aminoethyl hexanoate, 0.02 to 0.5 part of gibberellin, and 5,000 to 7,000 parts of water. According to experiment, the plant nutrient solution provided by the invention can be used for carrying out soilless culture of tomato, and the tomato has high plant height, thick stem, high cluster and high output.

An aripiprazole formulation is provided which includes the antipsychotic agent aripiprazole in the form of an inclusion complex in a β-cyclodextrin, preferably, sulfobutyl ether β-cyclodextrin (SBECD), which in the form of an injectable produces reversible generally minimal to mild irritation at the intramuscular injection site. A method for minimizing or reducing irritation caused by aripiprazole at an intramuscular injection site and a method for treating schizophrenia employing the above formulation are also provided.

The invention provides a number of methods for enhancing the aqueous solubility of an active ingredient which is insoluble or sparingly soluble in water. In one preferred embodiment, solubilization of the active ingredient is enhanced by combining it with beta-cyclodextrin in an aqueous complexation medium comprising beta-cyclodextrin and a negatively- or positively-charged compound which forms an inclusion or non-inclusion complex with beta-cyclodextrin and its inclusion complexes.

In part, the present invention is directed to a system comprising a lapachone or a prodrug thereof and a polymer, such as a biocompatible and optionally biodegradable polymer, methods for treatment using the subject polymer compositions, and methods of making and using the same. In another part, the present invention includes inclusion complexes of a lapachone or a prodrug thereof and a cyclodextrin, preferably a β-cyclodextrin, such as hydroxypropyl β-cyclodextrin, e.g., to improve the solubility of the lapachone or prodrug thereof.

The invention relates to a preparation method of a slow-setting polycarboxylic acid water reducing agent, which is implemented by carrying out free radical copolymerization reaction on allylsulfonate monomers, acrylic monomers, polyethylene glycol nono-methyl ether methacrylate macromonomers and maleic anhydride grafted beta-cyclodextrin macromonomers. The invention is characterized in that a beta-cyclodextrin side chain is introduced into a polycarboxylic acid main chain, so that the polycarboxylate water reducing agent has favorable slow setting property, micro air-entraining property and better fluidity. The obtained polycarboxylic acid water reducing agent has the advantages of stable product performance, strong adaptability to cement and favorable compatibility; and the cement paste fluidity is up to higher than 290mm (W/C=0.29), the water reducing rate of concrete is up to 30-40%, and the slump protection time is 3-5 hours. The preparation method provided by the invention has the characteristics of unique technique, excellent product performance and the like.

The invention relates to an AM/NaAA/ allyl cyclodextrin polymerization with a inclusion function and a synthesis method of the AM/NaAA/ allyl cyclodextrin (CD) polymerization, which comprises three structure units of acrylamide, sodium acrylate and allyl cyclodextrin. The synthesis method is as follow: the allyl cyclodextrin is synthesized with DMSO and DMF as solvent, CD as raw material and under the temperature of 0 to 10 DEG C. Then AM is put into the allyl-beta-cyclodextrin water solution, then initiator is added to prepare AM/ allyl-beta-cyclodextrin binary copolymer under the conditions that monomer concentration is 10 to 20 percent, initiation system concentration is 40 to 80 mg/l, the temperature is 30 to 50 DEG C, and the time is for 1 to 8 hours. NaOH solution is put into the binary copolymer to hydrolyze, then the AM/NaAA/ allyl cyclodextrin polymerization is obtained. The synthesis method of the polymer is processed under the mild condition with simple operation, the product is easy to be purified and separated. The AM/NaAA/ allyl cyclodextrin polymerization can be used in the fields such as petroleum exploitation, waste water treatment, chemistry and medicine.

The invention discloses a fruit and vegetable micro encapsulated fresh-keeping agent, which is prepared from chitosan, propolis and beta-cyclodextrin which are used as wall materials and cassia oil, rosemary oil and lemon oil which are used as core materials. The fruit and vegetable micro encapsulated fresh-keeping agent is prepared by the following steps of: adding the beta-cyclodextrin and water in a three-port bottle; electrically stirring and heating to 60-70DEG C for dissolving the beta-cyclodextrin into the water; continuously stirring and cooling to 40-45DEG C; adding the core materials of the cassia oil, the rosemary oil and the lemon oil to ensure that the mixed essential oil is uniformly dispersed in solution; then slowly cooling to the room temperature to obtain a beta-cyclodextrin-essential oil microcapsule; adding the mixed wall material of the chitosan and the propolis; adding glycerol and tween-80; and continuously stirring for 30 minutes to form the micro encapsulated fresh-keeping agent. in the invention, the beta-cyclodextrin-essential oil microcapsule is smeared on the surface of the fruit and vegetable by the film forming characteristics of the chitosan and the propolis and an essential oil fresh-keeping agent is continuously released under the action of the microcapsule, so that the aim of keeping the quality of the fruit and vegetable can be achieved.

The invention relates to a preparation method of tobacco extract granules, which comprises the following steps: firstly taking and cutting up tobacco leaves and/or tobacco stalks, taking water or ethanol or ethyl ether as a solvent for extraction, settling and filtering to obtain tobacco extract, then concentrating to the relative density of 1.00-1.30, and controlling the temperature to 20-40 DEGC to obtain tobacco extract concentrate or tobacco extractum; and including beta-cyclodextrin and flavouring essence for tobacco according to the mass ratio of 1-3:1 with the inclusion time of 1/5-3 hours to obtain a flavouring essence and beta-cyclodextrin inclusion compound, and then spray drying the flavouring essence for tobacco and beta-cyclodextrin inclusion compound and the tobacco extractconcentrate together to obtain tobacco spray dried powder; or directly spray drying the tobacco extractum to obtain the tobacco spray dried powder; and then adding excipient material to the tobacco spray dried powder for dry method or wet method granulation to obtain the tobacco extract granules. The tobacco extract granules obtained in the method disclosed by the invention are applied to cigarettes to improve the tar and harm reduction effect of the cigarettes, and can be used for aroma compensation, the utilization rate of waste tobacco leaf raw material is improved, and the cost of the cigarettes is reduced.

An objective of the present invention is to provide a polishing pad for a semiconductor wafer and a laminated body for polishing of a semiconductor wafer equipped with the same which can perform optical endpoint detection without lowering the polishing performance as well as methods for polishing of a semiconductor wafer using them. The polishing pad of the invention comprises a water-insoluble matrix material such as crosslinked 1,2-polybutadiene, and a water-soluble particle such as beta-cyclodextrin dispersed in this water-insoluble matrix material, and has a light transmitting properties so that a polishing endpoint can be detected with a light.

Sparingly water-soluble agents can be formulated as cyclodextrin complexes, however, these water-soluble drug-cyclodextrin complexes dissociate when the complex is administered into patients. The dilution of the complex in the patient leads to the drug being released from the complex, so the drug is not effectively targeted. In contrast, drugs encapsulated in the aqueous core of a lipid vesicles are not released when the liposome is diluted in blood. This invention describes compositions and methods whereby cyclodextrin or polyanionic beta-cyclodextrin drug-complexes are mixed with a preformed liposome containing the amine salts of an acidic compound. This results in the drug cyclodextrin complex being transferred into the liposome where it is stably retained. The liposome-encapsulated drug can then be injected into a patient.

The invention discloses a rapid-soluble Pu'er tea and preparing method to accelerate body to release energy, which comprises the following steps: blending Pu'er tea and ripe tea ( or black tea and green tea) according to certain proportion; grinding roughly; extracting through water; condensing; drying; adding beta-cyclodextrin; recycling aged perfume benzine ingredient through steam distilling method or super-critical extracting method; packing the benzine and rapid-soluble tea powder together; adding isomaltose hypgather, degrading factor and flavoring factor.

The invention discloses fragrant artificial leather and a preparation method thereof and relates to the technical field of leather. The fragrant artificial leather comprises a surface layer, wherein a finishing layer is arranged on the surface layer and comprises the components of a controlled-release fragrance finishing agent, a compatilizer and a crosslinking agent, wherein the controlled-release fragrance finishing agent is composed of the components of beta-cyclodextrin and essence, and the compatilizer refers to a water-solubility linear parent high polymer material; the preparation method of the artificial leather comprises the steps of: coating a PVC (Polyvinyl Chloride) or water-based PU surface layer on release paper, and drying the surface layer; coating a PVC (Polyvinyl Chloride) or water-based PU foaming layer on the surface layer, foaming and drying the foaming layer; coating a water-based PU adhesive on the foaming layer, pasting base cloth on the foaming layer with the water-based PU adhesive, drying to obtain an artificial layer; and rolling a layer or multiple layers of water-based PU finishing agent comprising the components of the controlled-release fragrance finishing agent, the compatilizer, the crosslinking agent and a water-based PU finishing agent (water-based polyurethane) on the surface layer of the artificial leather by a three-edition printing machine, and drying to obtain the fragrant artificial leather. The heat resistance and the durability of fragrance volatilization of fragrant artificial leather prepared by the invention are improved, and the fragrance of the fragrant artificial leather is kept above 50% after the fragrant leather is baked for 168h at 100 DEG C.

The invention relates to a bacteriostatic antistatic multifunctional non-woven fabric which is fabricated by the steps of unwinding non-woven gray fabric; applying finishing agent by using an ultrasonic foam applicator; extruding out redundant finishing agent by using a rolling mill; and then drying by using a baking oven and winding. The finishing agent includes the following components: sodium dodecyl sulfate, hydroxyethyl cellulose, nanometer silver powder, penetrating agent JFC, nano-silica, gamma-aminopropyltriethoxysilane, sorbitan ester, cetyltrimethyl ammonium chloride, methacrylic acid, beta-cyclodextrin and spices. The non-woven fabric has multiple functions of being antibacterial, anti-static, anti-ultraviolet, washing-resisting, fragrance lasting and the like. Especially the ultrasonic foam applicator is utilized to conduct foam finishing, and the finishing agent can be evenly penetrated in the fiber structure by means of the effect of ultrasonic waves, so as to lead nanometer material in the finishing agent and particles of the spices to disperse in the fabric and to be wrapped by organic matters to form a microcapsulation state, so that all functions and effects are lasting.

The invention discloses a protective layer for a lithium sulphur battery, a preparation method thereof and a lithium sulphur battery using the protective layer, which aim at effectively preventing polysulfide from shuttling back and forth in electrolyte and from corroding a lithium negative electrode, facilitating uniform deposition of discharge products on the surface of an electrode, improving the specific capacity of the lithium sulphur battery and prolonging the service life of the lithium sulphur battery. The technical liquid of the invention is as follows: the protective layer is prepared by coating slurry on the surface of a diaphragm, wherein the slurry comprises modified graphene and an adhesive with the mass ratio of (4-9):1; the modified graphene contains one or more of the following functional groups: alkyl, alkylene, aryl, halogen, -CN, -SCN, -NCO, -OH, -COOH, -NH2, -COX,-NO2, -SO3H, -COOR, -COR, -CONHR, -CONR2, -OR, -NHR and -NR2, wherein X = F, Cl, Br or I, and R = alkyl, alkylene or aryl; the adhesive is one or more of polyoxyethylene, polyvinylidene fluoride, polyacrylic acid, polytetrafluoroethylene, gelatin, sodium alginate and beta-cyclodextrin.

Oral rinse and dentifrice compositions, comprising a phenolic selected from the group consisting of menthol, eucalyptol, methyl salicylate, thymol, triclosan, and mixtures thereof; and a cyclodextrin selected from the group consisting of hydroxypropyl β-cyclodextrin, hydroxyethyl β-cyclodextrin, hydroxypropyl γ-cyclodextrin, hydroxyethyl γ-cyclodextrin, α-cyclodextrin, methyl β-cyclodextrin, and mixtures thereof. These compositions are useful in retarding the development of plaque, treating gingivitis, and in treating the presence of micro-organisms in the oral cavity.

The invention belongs to the field of nanometer materials and food packaging materials, and discloses a nanofiber composite membrane containing plant source antibacterial agents, a preparation method and application of the nanofiber composite membrane. The preparation method of the nanofiber composite membrane includes a first step of preparing 6%-10%, by mass, of polyving akohol solution, a second step of cooling the obtained polyving akohol solution down to 30-50 DEG C, adding 1%-3% of beta-cyclodextrin, carrying out magnetic stirring for 0.5-1 hour, and then cooling the mixtures down to indoor temperatures, a third step of adding 2%-8% of cinnamon essential oil to the solution of the second step, carrying out magnetic stirring for 1-2 hours at 25-40 DEG C, and obtaining spinning solution, and a fourth step of carrying out electrostatic spinning on the obtained spinning solution, carrying out vacuum drying, and obtaining the nanofiber composite membrane containing the plant source antibacterial agents. The sterilizing rate of the nanofiber composite membrane for staphylococcus aureus and escherichia coli is larger than or equal to 90%, and the nanofiber composite membrane has good tenacity, biocompatibility and degradability, and has wide application prospect in the field of the food packaging materials.

The present invention discloses a camellia oil microcapsule, its preparation method and application. Said camellia oil microcapsule (by 1000g prescription raw material) contains 20-90g of beta-cyclodextrin, 130-244g of malt dextrin, 6-14g of modified starch, 2-6g of monoglyceride and sucrose fatty ester compound emulsifying agent, 40-90g of camellia oil and the rest is water. Said camellia oil microcapsule can be used as general food, health-care food, medicine, food additive and feed additive. Besides, said invention also provides the concrete steps of its preparation method.

The invention relates to a method for ready-to-eat mussel flesh products. The method is characterized in that: 1, the mussel flesh is softened by protease, so that actomyosins and elastins in collagen fibers and connective tissues can be effectively degraded, the connections among partial amino acids are broken, and proper chewing force is given to the mussel flesh products; 2, the fishy compositions of the mussel flesh are embedded by a beta-cyclodextrin embedding process, so that the original off-flavor of the mussels can be effectively reduced; 3, on a basis of effectively removing the fishy smell, flavoring agents, white granulated sugar, soy sauce and the like are added in a proper ratio to flavor the mussel flesh for a better taste; and 4, the mussel flesh is dried by a low-temperature hot air drying process, and the water content is properly controlled on a basis of ensuring the quality of the mussel flesh products. The method has the advantages of overcoming the defects of too high toughness, poor chewing property and strong fishy smell existing in the conventional process of making the mussel flesh products, along with simple process, low cost and easy operation.

The invention relates to a preparation process of convenient rice, which comprises the following operational steps: A, washing rice; B, soaking the rice for the fist time; C, stewing the rice for the first time; D, soaking the rice the second time; E, stewing the rice for the second time; F, dispersing the rice; G, drying the rice to obtain finished products; and H, packaging the finished products, wherein soaking liquid contains 0.2 to 0.6 percent of citric acid, 0.1 to 0.3 percent of beta-cyclodextrin and 0.1 to 0.3 percent of sucrose fatty acid ester. The soaking liquid improves the edible quality of the convenient rice and strengthens the anti-retrogradation performance of the convenient rice while shortening the rehydration time of the convenient rice, so that the edible quality of the convenient rice is the same as that of fresh rice; and the gelatinization degree of the rice is improved by adopting the process of the two-time soaking and two-time stewing, so that the rehydration time of the convenient rice is shortened to 8 minutes. The preparation process has the advantages of reasonable process design, low equipment requirement, conveniently-eaten product, long quality guarantee period and good edible quality, and has the high popularization and use values.

The invention provides a carbon supported core-shell structure nano metal catalyst as well as a preparation method and application thereof. The carbon supported metal catalyst with the core-shell structure is obtained by compounding layered double-metal hydroxides containing cobalt and nickel and beta-cyclodextrin and self-reducing the compound in situ at a high temperature by means of the reducibility of generating carbon at the high temperature of the beta-cyclodextrin; the carbon supported metal catalyst with the core-shell structure can be expressed as M/ZnO-Al2O3/C; and the core of the carbon supported metal catalyst is formed by nano metal M (M is Co or Ni), and the shell of the catalyst is formed by ZnO and little amorphous Al2O3; amorphous carbon serves as the catalyst carrier; the grain sizes of the core-shell structure nanoparticles are distributed in the range of 15-40 nm; and the specific surface area of the catalyst is 150-350 m<2>/g. The carbon supported metal catalyst is applied to hydrogenation reaction of citronellal and shows excellent activity; and the carbon supported metal catalyst has high selectivity for the product citronellal.

The invention relates to an oral drug composite of beta-cyclodextrin edaravone inclusion, comprising the compositions in parts by weight: 1 part of edaravone and 6-100 parts of cyclodextrin. Based on the optimization scheme, the mass ratio of the edaravone and the cyclodextrin is 1:6-50, wherein the mass ratio of beta-cyclodextrin to the cyclodextrin is 1:6-20, and the mass ratio of mixed cyclodextrin containing the beta-cyclodextrin is 1:8-50. A preparation method comprises the following steps of mixing the beta-cyclodextrin or the mixed cyclodextrin containing the beta-cyclodextrin with 1-5 times mass of water, adding the edaravone with the selected mass ratio or adding a solution prepared from the edaravone and 10 times soluble organic solvent, grinding or stirring, vaporizing and eliminating water at the temperature no higher than 60 DEG C, and decompression drying to obtain a white powdery inclusion complex. A contrast test is carried out on the invention and edaravone injection on sale, the absolute bioavailability of an inclusion complex preparation thereof can reach above 55 percent; and compared with a common edaravone suspension preparation (attached drawing 6), the relative bioavailability of the invention reaches up to about 1000 percent.

The invention provides a beta-cyclodextrin functionalized Fe3O4 magnetic nanometer adsorbent. The beta-cyclodextrin functionalized Fe3O4 magnetic nanometer adsorbent is prepared through a lay-by-lay assembling method. The beta-cyclodextrin functionalized Fe3O4 magnetic nanometer adsorbent has good stability, good dissolvability and strong adsorption capability. The beta-cyclodextrin functionalized Fe3O4 magnetic nanometer adsorbent has strong effects of adsorbing azo dyes such as methylene blue, methylene red and the like in waste water. The invention also provides a method for removing methylene blue in waste water. The method comprises the following steps of putting the beta-cyclodextrin functionalized Fe3O4 magnetic nanometer adsorbent into an aqueous solution containing methylene blue, adjusting a pH value of the reaction system to a pH value of 7 to 8, carrying out ultrasonic dispersion for 0.5 to 1 hour, carrying out oscillation for 8 to 10 hours, and separating out precipitates by a permanent magnet. The method for removing methylene blue in waste water has the advantages of good adsorption effects, mild reaction, simple processes, simplification of solid-liquid separation, less secondary pollution and good feasibility for large-scale application.

The invention relates to a container made from tea powder and edible findings. The preparation process comprises following steps: drying tea and tea stalk, removing foreign matter, disintegrating and screening with 40-80 order screen, adding beta-cyclodextrin, active carbon, diatomaceous earth, active aluminum oxide, stirring evenly; steaming with steam of 100-110 Deg. C for 5-10 minutes until the tea feels pastiness and wet; adding soft tea into module, press shaping with 10-30 ton pressure, stewing for at least 30 minutes, cooling and removing module, stewing and drying. The container can release natural tea fragrance for a long time, which can deodorize and clean indoor air, absorb, inhibit, degrade and oxide formaldehyde and radon gas caused from indoor decoration. It can also used for dear medicine and foodstuff storage. The raw material is leftovers of tea production, so the invention makes full use of tea resource and reduces environmental pollution.