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46results about How to "Reduce Potential Toxicity" patented technology

Residual solvent extraction method and microparticles produced thereby

Methods for preparing microparticles having reduced residual solvent levels. Microparticles are contacted with a non-aqueous washing system to reduce the level of residual solvent in the microparticles. Preferred non-aqueous washing systems include 100% ethanol and a blend of ethanol and heptane. A solvent blend of a hardening solvent and a washing solvent can be used to harden and wash microparticles in a single step, thereby eliminating the need for a post-hardening wash step.
Owner:ALKERMES PHARMA IRELAND LTD

Nutritional supplement with functions of oxidation resistance and fatigue resistance

The invention relates to a nutritional supplement with functions of oxidation resistance and fatigue resistance, which is prepared from active ingredients and auxiliary materials such as multiple vitamins, mineral substances, siberian ginseng extracts, astragalus mongholicus extracts, medlar extracts, grape seed extracts and the like. The active ingredients in the supplement have a special proportion; the nutritional supplement can achieve the same effects of oxidation resistance and fatigue resistance by using a dose of traditional Chinese medical extracts smaller than the conventional dose;and the nutritional supplement has the characteristics of low potential toxicity, low production cost, obvious treatment effect and low price, thereby being suitable for long-time use.
Owner:辽宁亿邦制药有限公司

Petroleum-degrading bactericide and preparation method thereof

The invention relates to a petroleum-degrading bactericide and also relates to a preparation method of the petroleum-degrading bactericide. The preparation method of the petroleum-degrading bactericide comprises the following steps: (1) performing enlage cultivation on such bacteria as caulobacter segnis, candida parapsilosis, brachybacterium phenoliresistens, arthrobacter globiformis and sporidiobolus salmonicolor till the concentration of the bacteria is 10<9>-10<10> cfu / g, and uniformly mixing according to the mass ratio of 3: 2: 2: 1: 1 to obtain a mixed culture; (2) fermenting the mixed culture in a liquid fermentation culture medium for 48-60 h; (3) carrying out centrifugal separation to obtain thick strain cells; (4) uniformly mixing the thick strain cells with a 0.9% NaCl solution and a sea mud leachate; (5) adding nutrient substances, and then preserving at 4 DEG C in a sealed manner. The petroleum-degrading bactericide is high in petroleum degradation rate.
Owner:NORTH CHINA SEA ENVIRONMENTAL MONITORING CENT OF STATE OCEANIC ADMINISTATION

Extraction method of longan seed polyphenol

The invention relates to an extraction method of longan seed polyphenol, relating to a processing method of a longan. The extraction method of the longan seed polyphenol can enhance the economic benefit of a longan industry and increase the income of fruit growers. The extraction method of the longan seed polyphenol comprises the following steps of: drying cleaned longan seeds; smashing raw material longan seeds to obtain longan seed powder; adding a sodium phosphate buffer solution to the longan seed powder to obtain a leach solution; pouring out the leach solution, filtering, removing leaching residues, and recovering immersion liquid; concentrating obtained filter liquor to obtain a concentrated solution; adding hydrochloric acid to the concentrated solution, stirring, and then standing for precipitation to obtain a precipitation solution; centrifugalizing the precipitation solution, removing a supernatant, washing precipitates by using the hydrochloric acid, and then drying to obtain fine longan seed polyphenol powder.
Owner:XIAMEN UNIV

Method for producing metal nanoparticles

This invention provides a method for producing a composition comprising colloidal nanoparticles of metals including silver, gold, zinc, mercury, copper, palladium, platinum, or bismuth, by contacting a metal or metal compound with bacteria. An embodiment of the method comprises a step of incubating probiotic bacteria with an aqueous solution comprising at least 4 mM of a silver or gold salt. A resulting nanosilver-containing composition is useful as a highly efficient antimicrobial agent, for instance when impregnated onto a carrier, or an algicide agent or a herbicide agent.
Owner:JANSSEN PHARMA NV

Nanoparticles for use for treating a neuronal disorder

The present invention relates to the medical field, in particular to the treatment of neurological disorders. More specifically the present invention relates to a nanoparticle or nanoparticles' aggregate for use in prevention or treatment of a neurological disease or at least one symptom thereof in a subject when the nanoparticle or nanoparticles' aggregate is exposed to an electric field, wherein the nanoparticle's or nanoparticles' aggregate's material is selected from a conductor material, a semiconductor material, an insulator material with a dielectric constant εijk equal to or above 200, and an insulator material with a dielectric constant εijk equal to or below 100. It further relates to compositions and kits comprising such nanoparticles and / or nanoparticles' aggregates as well as to uses thereof.
Owner:NANOBIOTIX SA

Hydrobromide of benzodiazepine derivative and multiple crystal forms thereof, and preparation method for multiple crystal forms

The invention discloses hydrobromide of benzodiazepine derivative and multiple crystal forms thereof, and a preparation method for the multiple crystal forms. The preparation method comprises the following steps: heating and dissolving hydrobromide of the crystal form or amorphous form of a compound as shown in a formula (I) which is defined in the specification or the compound as shown in the formula (I) and a hydrobromic acid solution in a crystallization solvent; carrying out cooling and crystallization; and then carrying out washing and drying so as to prepare hydrobromide of the compound as shown in the formula (I) or the crystal forms thereof. The prepared hydrobromide of the compound as shown in the formula (I) has good stability, high purity and no toxicity and can be better applied to clinical treatment.
Owner:CHENGDU BRILLIANT PHARMA CO LTD

Neuroactive steroids, compositions, and uses thereof

Provided herein are 19-nor C3, 3-disubstituted steroids of Formula (I): and pharmaceutically acceptable salts thereof; wherein R1, R2, R3, and R4 are as defined herein, and A is a heteroaryl ring system comprising 3 or 4 nitrogens as defined herein. Such compounds are contemplated useful for the prevention and treatment of a variety of CNS-related conditions, for example, treatment of sleep disorders, mood disorders, schizophrenia spectrum disorders, convulsive disorders, disorders of memory and / or cognition, movement disorders, personality disorders, autism spectrum disorders, pain, traumatic brain injury, vascular diseases, substance abuse disorders and / or withdrawal syndromes, and tinnitus.
Owner:SAGE THERAPEUTICS

Etoposide long-circulating emulsion and preparation method thereof

InactiveCN102247320AReduces vascular irritation and potential toxicityAvoid drug degradationOrganic active ingredientsEmulsion deliveryChemistryEmulsion
The invention belongs to the field of medicinal preparations, and relates to an etoposide long-circulating emulsion for injection, and a preparation method thereof. The etoposide long-circulating emulsion comprises etoposide, fluid oil, emulsifiers, polyethylene glycol (PEG) modified esters and the like, and has the characteristics of high entrapment rate, good stability and low toxicity. The etoposide long-circulating emulsion improves the solubility and the stability of etoposide, reduces irritation effects of etoposide on blood vessels, prolongs cycle time of etoposide in blood, and improves distribution of etoposide in vivo thus improves drug curative effects. The preparation method of the etoposide long-circulating emulsion solves the carrying problems of drugs with poor water-solubility and fat-solubility and realizes stable preservation and no drug precipitation. The preparation method has the characteristics of simple process, low cost and good applicability for industrializedproduction.
Owner:TIANJIN INSTITUTE OF PHARMA RESEARCH

Method of preparing humus and recovering heavy-metal-polluted bottom mud with humus

The invention discloses a method of preparing humus and recovering heavy-metal-polluted bottom mud with the humus. Green waste, wood dust, bean pulp, humus soil and / or grape residues are proportionedon the basis of the compost raw material mass proportion of (4.5-5.5):(1.8-2.2):1:(1.8-2.2):(1.8-2.2), wherein the green waste is one or more of peanut straws, corn straws, sesame straws and maple leaves; a C / N mass ratio and moisture content are adjusted, white-rot fungi and trichoderma viride are inoculated, and aerobic composting is conducted; after composting, the humus in the mixture is extracted. According to the method of preparing humus and recovering the heavy-metal-polluted bottom mud with the humus, the polluted bottom mud is leached with a humus solution to remove heavy metal and complete a recovery process. The humus in an extractable state generated through green waste composting serves as a leaching agent, which makes the method more efficient and environmentally friendly, no new heavy metal pollution can be generated, the cost is low, and humus generation through composting achieves waste recycling better.
Owner:HUNAN UNIV

Sesamol Derivatives as Novel Inhibitors of Arachidonic Acid Formation

The invention relates to a novel class of inhibitor of arachidonic acid useful for treating inflammatory conditions. Specifically, the invention relates to hydrophobic and hydrophilic derivatives of sesamol that confer lower toxicity and increased circulatory lifetimes than pure sesamol.
Owner:SEARS BARRY D

Nano composite material based on enzyme degradation enhanced photo-thermal removal of bacterial biofilms, and preparation method and application of nano composite material

The invention discloses a nano composite material based on enzyme degradation enhanced photo-thermal removal of bacterial biofilms, and a preparation method and application of the nano composite material. The nano composite material is a MnO2 nano sheet (namely MnO2-amylase-PEG-ICG NSs, MAPI for short) modified by amylase, polyethylene glycol (PEG) and indocyanine green (ICG). The material can degrade extracellular polymers (EPS) of a biofilm through the amylases, damage the structure of the biofilm, and further enhance the photo-thermal sterilization effect of the ICG. The MAPI provided by the invention has the advantages of good stability, excellent bacteria killing effect in a biofilm and small cytotoxicity, and can meet basic conditions of biological medicine application.
Owner:NANJING UNIV OF POSTS & TELECOMM

DNA molecules stabilized for propagation in bacterial cells that encode cystic fibrosis transmembrane conductance regulator

Disclosed are full length isolated DNAs encoding cystic fibrosis transmembrane conductance regulator (CFTR) protein and a variety of mutants thereof. Also disclosed are antibodies specific for various CFTR domains and methods for their production. Expression of CFTR from cells transformed with these CFTR genes or cDNAs demonstrate surprising CFTR intracellular distributions and results thereby providing for new diagnostic and therapeutic procedures.
Owner:GENZYME CORP

Dexibuprofen guaiacol ester and preparation method thereof

The invention relates to a novel optical isomer compound of a formula (1), in particular to a dextroisomer of ibuprofen guaiacol ester. The invention also discloses a method for preparing the compound, a drug composition taking the compound as an active ingredient and application of the compound and the drug composition to the preparation of drugs of diminishing inflammation, effectively alleviating various pain or having effects of relieving fever of adults and / or children.
Owner:HUNAN JIUDIAN PHARMA

Use of rhamnose and derivatives thereof as antifungal agents

It relates to a rhamnose or a rhamnose-rich polysaccharide for use in the treatment and / or prevention of fungal infections in human beings. It also relates to a combination of rhamnose or a rhamnose-rich polysaccharide and a further antifungal agent for use in the treatment and / or prevention of fungal infections in human beings. It also relates to pharmaceutical or cosmetic composition comprising an effective amount of rhamnose or a rhamnose-rich polysaccharide for use in the treatment and / or prevention of fungal infections in human beings.
Owner:ISDIN

Drug delivery system of small interfering RNA drug and preparation

A delivery system and preparation of siRNA, with nanoparticles enclosing siRNA as an active ingredient, wherein the nano-particles are formed by a polymer and a cationic lipid, the polymer is a di-block or tri-block copolymer of polyethylene glycol-polylactic acid or polyethylene glycol-poly(lactic acid-glycolic acid), the cationic lipid is N,N-dihydroxyethyl-N-methyl-N-2-(cholesteroloxy carbonylamino) ethylammonium bromide or (2,3-dioleyloxy propyl) trimethylammonium chloride. The nanoparticle and preparation can desirably deliver siRNA to a cell and effectively silence expression of a target gene. Moreover, after being modified by a ligand or antibody, the siRNA delivery system can desirably silence the target gene at both a cellular level and an animal level.
Owner:SUZHOU RIBO LIFE SCIENCE CO LTD

Pesticide Composition Having Improved Rainfastness

A pesticide composition includes an active component and polyethyleneimine having a weight average molecular weight of at least about 750,000 g / mol and has improved rainfastness. The polyethyleneimine of this invention has decreased mobility in water as compared to related lower molecular weight analogs. The pesticide composition is formed using a method that includes the steps of providing the active component, providing the polyethyleneimine, and combining the active component and the polyethyleneimine to form the pesticide composition.
Owner:BASF AG

Immunogenic composition

The invention provides an immunogenic composition comprising: a) a conjugate that is a capsular saccharide from GBS serotype Ia conjugated to a carrier protein; b) a conjugate that is a capsular saccharide from GBS serotype Ib conjugated to a carrier protein; c) a conjugate that is a capsular saccharide from GBS serotype III conjugated to a carrier protein; d) a conjugate that is a capsular saccharide from GBS serotype II conjugated to a carrier protein; and e) a conjugate that is a capsular saccharide from GBS serotype V conjugated to a carrier protein.
Owner:GLAXOSMITHKLINE BIOLOGICALS SA

Protein or polypeptide drug-loaded tissue adhesive film and preparation method thereof

The invention relates to the field of biomedicine, especially to a drug-loaded tissue adhesive film and a preparation method thereof. The invention provides a drug-loaded tissue adhesive film, which comprises alternately superimposed cationic layers and anionic layers, at least one layer of the cationic layers and anionic layers is a drug layer, or at least one layer of the cationic layers and anionic layers contains a charged drug. The drug-loaded tissue adhesive film provided by the invention has good tissue adhesiveness, good biocompatibility and degradable absorbability, and good stability, and the physical and chemical properties of the drug-loaded tissue adhesive film can be adjusted by regulating the material composition.
Owner:苏州博创同康医药科技有限公司

Preposed cavitation type marihuana fat-soluble active matter soluble microneedle as well as preparation method and application thereof

The invention relates to a preposed cavitation type hemp fat-soluble active matter soluble microneedle, which comprises a backing layer and a microneedle array fixed on the backing layer, and one of active metal particles, bicarbonate, bicarbonate, cerium dioxide particles or cerium-zirconium composite oxide particles is embedded in the tip part of the microneedle; and the needle body is filled with a soluble microneedle matrix material containing a cannabis fat-soluble active matter solid dispersion. According to the preposed cavitation type cannabis sativa active ingredient microneedle disclosed by the invention, by utilizing preposed bubbles, the delivery resistance of an embedded medicine to a tumor deep layer is greatly reduced, and the transdermal permeability coefficient is greatly improved; generated hydrogen / oxygen / carbon dioxide and the like can remarkably improve the tumor immunosuppression microenvironment and cooperate with other embedded anti-tumor drugs to improve the treatment efficiency; and the required administration dosage is greatly reduced, so that the potential toxicity is reduced, and the comprehensive treatment efficiency on various superficial skin tumors is obviously improved.
Owner:中纳科(南京)生物科技有限公司

Color developing system for responding to rot smell of meat through color change, and preparation method and application thereof

The invention discloses a nano-silver color developing system for responding to a rot smell of meat through color change, and a preparation method and an application thereof, and belongs to the fieldof food monitoring. According to the color developing system, an Arabic gum powder solution is added into a silver nitrate solution and the solutions are stirred uniformly; then a reaction is carriedout under a high-temperature and high-pressure condition; and after the reaction is ended, filtering is carried out to obtain the Arabic gum powder-nano-silver color developing system. Compared with atraditional nano-silver preparation method, the preparation method has the following advantages: the preparation method of the Arabic gum powder-nano-silver color developing system which follows "green chemistry" shows the advantages of safety, non-toxicity, environmental friendliness and the like, and greatly reduces the toxic effect generated by the traditional preparation method. By selectinga food-grade safe medium, the potential toxicity generated for the environment and organisms is reduced. Meanwhile, certain harm to the environment caused by toxic substances generated in a synthesisprocess is avoided.
Owner:NANJING AGRICULTURAL UNIVERSITY

Extraction method of longan seed polyphenol

The invention relates to an extraction method of longan seed polyphenol, relating to a processing method of a longan. The extraction method of the longan seed polyphenol can enhance the economic benefit of a longan industry and increase the income of fruit growers. The extraction method of the longan seed polyphenol comprises the following steps of: drying cleaned longan seeds; smashing raw material longan seeds to obtain longan seed powder; adding a sodium phosphate buffer solution to the longan seed powder to obtain a leach solution; pouring out the leach solution, filtering, removing leaching residues, and recovering immersion liquid; concentrating obtained filter liquor to obtain a concentrated solution; adding hydrochloric acid to the concentrated solution, stirring, and then standing for precipitation to obtain a precipitation solution; centrifugalizing the precipitation solution, removing a supernatant, washing precipitates by using the hydrochloric acid, and then drying to obtain fine longan seed polyphenol powder.
Owner:XIAMEN UNIV

Dihydroisoquinoline compound

The invention provides a dihydroisoquinoline compound or a pharmaceutically acceptable salt, ester, isomer, solvate, hydrate, prodrug or isotope marker thereof. The compound has a structure shown as ageneral formula I. The compound has extremely strong activity of inhibiting hepatitis B surface antigen, also has extremely strong activity of inhibiting hepatitis B DNA, has relatively high bioavailability, can play a drug effect at a relatively low dosage, and reduces the potential toxicity of the compound.
Owner:SUZHOU ARK BIOPHARM CO LTD

Preparation and application of polydopamine-encapsulated mesoporous silica nano-drug delivery system

The invention discloses the preparation and application of a polydopamine-encapsulated mesoporous silica nanometer drug-carrying system, which belongs to the application development of nanotechnology in the agricultural field. The nano-drug loading system uses mesoporous silica nanoparticles as the carrier of the pesticide, and is formed by encapsulating polydopamine after adsorbing the pesticide. The nano-drug loading system described in the present invention has pH responsiveness and can promote the release of loaded pesticide molecules under alkaline conditions. The nano-drug-loading system has good photothermal conversion ability. Under the irradiation of near-infrared light, the temperature of the system is increased, which is beneficial to the release of pesticide components. Through the encapsulation of polydopamine, the nano-drug-loading system has good leaf adhesion properties and reduces the drop loss of pesticide droplets. In terms of biological activity, for herbivorous lepidopteran pests with an alkaline midgut microenvironment, it showed a highly effective insecticidal effect similar to that of commercial insecticides.
Owner:NANJING UNIV +1

A green rapid preparation method of antibacterial material sodium alginate-ascorbic acid nano silver

ActiveCN107716943BPotentially Harmful DisadvantageReduce Potential ToxicityBiocideNanotechnologyFreeze-dryingSilver particles
The invention discloses a green and quick preparation method of antibacterial material sodium alginate-ascorbic acid nano-silver. The method includes the following steps that (1) a sodium alginate water solution is prepared; (2) the sodium alginate water solution is heated and magnetically stirred overnight; (3) a silver nitrate solution is dropwise added into the overnight stirred sodium alginatewater solution in accompaniment with vortex treatment; (4) an ascorbic acid solution is dropwise added into the mixture obtained in the step (3) in accompaniment with vortex treatment; (5) ultrasonictreatment is carried out on a mixing system; and (6) the mixing system obtained after ultrasonic treatment is centrifuged, supernate is discarded, washing is carried out, sediment is refrigerated ina refrigerator at the temperature of minus 80 DEG C and subjected to freeze drying through a vacuum freezer dryer at the temperature of minus 40 DEG C, and sodium alginate nano-silver particles are obtained. According to the method, the sodium alginate-ascorbic acid nano-silver material is prepared through ultrasound, quick and green preparation is achieved, and the sodium alginate-ascorbic acid nano-silver material is a fresh-keeping packaging material with high potential and is used for prolonging the practical shelf life of products to be packaged.
Owner:ZHEJIANG UNIV

Polysaccharide medicine loading tissue adhesion film and preparing method thereof

The invention relates to the field of biological medicine, in particular to a polysaccharide medicine loading tissue adhesion film and a preparing method thereof. The polysaccharide medicine loading tissue adhesion film comprises cationic layers and anionic layers, wherein the cationic layers and the anionic layers are stacked alternately. At least one layer in the cationic layers and the anionic layers is a medicine layer, or at least one layer in the cationic layers and the anionic layers contains medicine with charges, and polysaccharide medicine serves as the medicine. The polysaccharide medicine loading tissue adhesion film has good tissue adhesion and high biological compatibility, degradation absorbability and stability, and the physical performance and the chemical performance of the polysaccharide medicine loading tissue adhesion film can be adjusted by adjusting the constitution of materials.
Owner:苏州博创同康医药科技有限公司
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