661results about How to "Clear ingredients" patented technology

The invention discloses Agrobacterium ZX09, water-soluble beta-glucan prepared from the Agrobacterium ZX09 and the preparation method thereof and the application on reducing blood sugar, wherein the bacterial strain of the Agrobacterium ZX09 is obtained by separating saline soil from Dongying city in Shandong province; the bacterial strain is Agrobacterium sp. and is collected in China Center for Type Culture Collection (CCTCC) on January 21st, 2010; and the collection number is CCTCC NO:M2010020. The structure general formula of the water-soluble beta-glucan prepared from the Agrobacterium ZX09 is as follows: ->(3)-beta-D-Glup-(1->3)-[beta-D-Glup-(1->3)-beta-D-Glup-]3-alpha-D-Glup-(1->3)-alpha-D-Glup-(1)n->, and n in the structural formula is from 100 to 200. The bacterial strain has the advantages of novelty, special properties, salt resistant growth, no pigment secretion in the process of growth, simple and convenient cultivation operation, simple technology, total synthetic media, definite components and low cost, and is suitable for industrial production.

The invention provides a serum-free medium for umbilical cord mesenchymal stem cells and belongs to the technical field of cell culture. The serum-free medium for umbilical cord mesenchymal stem cells comprises a basal culture medium body and added ingredients, wherein the basal culture medium body is a DMEM culture medium; the added ingredients include a basic fibroblast growth factor hFGF, a epidermal growth factor hEGF, insulin hI, a leukaemia inhibitory factor hLIF and astragalus polysaccharide. The umbilical cord mesenchymal stem cells are subjected to subculture and amplification in the medium, and the surfaces of the cultured cells are marked and analyzed. The serum-free medium for umbilical cord mesenchymal stem cells overcomes the defect of exogenous pollution of serum and solves the problem of contradiction between the cell expansion number and cost reduction. The medium is free of serum, thereby preventing influence of animal-derived serum ingredients on cell culture. The medium can be used for studying the differentiation and proliferation adjusting mechanism of the umbilical cord mesenchymal stem cells.

The invention provides an epigallo-catechin gallate (EGCG) with high purity and a preparation method thereof. The EGCG content is 98.0 percent to 99.9 percent. The preparation method mainly comprisesthe working procedures of extracting, separating by a chromatography and crystallizing. The invention has favorable reproducibility of preparation process, high acquired EGCG content, low cost and stable and controllable quality and is suitable for industrialized production.

The invention discloses culturing, freezing and recovering methods of an activated lymphocyte with CD3+CD8+as major, which can solve problems that a patient needs carrying out blood sampling for many times caused by continuously utilizing the activated lymphocyte with CD3+CD8+as major. The method comprises the following steps of: (1) contacting the extracted lymphocyte of the peripheral blood with IL-2, IL-15, an anti-CD3 antibody and an anti-CD28 antibody, so as to amplify the activated lymphocyte with CD3+CD8+as major; (2) freezing and storing the activated lymphocyte; and (3) recovering the activated lymphocyte. The activated lymphocyte cultured via the method disclosed by the invention has clear components, and comprises few CD4+CD25+Treg cells and more CD8+T lymphocyte; feedback time and frequency of the activated lymphocyte can be adjusted according to other treatments for a patient, such as a radiotherapy or a chemotherapy, so that diseases, such as tumor, infectious diseases and immunodeficiency can be treated well.

The invention provides umbilical cord mesenchymal stem cell injection as well as a preparation method and application thereof. The umbilical cord mesenchymal stem cell injection comprises mesenchymal stem cells and a frozen stock solution, wherein the frozen stock solution comprises the following components: a balanced electrolyte solution with the volume percentage of 25-70 percent, hydroxyethyl starch 130/0.4 with the mass/volume percentage (g/ml) of 1-10 percent, triphosadenine disodium magnesium chloride with the volume percentage of 5-20 percent, clinical-grade DMSO with the volume percentage of 5-20% and 20% human albumin with the volume percentage of 1-50 percent. The prepared umbilical cord mesenchymal stem cell injection is free of animal serum, safe, high in cell viability after cryopreservation resuscitation, can be used for treating inflammatory bowel disease, has a good effect and has no toxic or side effects.

The invention relates to the field of biology, in particular to MSC (mesenchymal stem cell) injection as well as a preparation and an application thereof. The injection comprises MSCs and a cell cryopreservation solution, wherein the cryopreservation solution comprises components in percentage by volume as follows: 25%-70% of an electrolyte balance solution, 5%-20% of clinical-grade DMSO (dimethyl sulfoxide), 1%-50% of 20% human serum albumin, 1%-10% of hydroxyethyl starch 130/0.4 and 5%-20% of triphosadenine-disodium magnesium chloride freeze-drying powder. The injection is free of animal serum, has clear ingredients and good cell cryopreservation effect and is safe and controllable, long-term storage and long-distance transport are facilitated, the survival rate of cells after recovery is higher than 95%, the vitality is high, and the injection can effectively relieve injury and inflammation symptoms of lesion tissue of lungs and promote tissue regeneration of the lungs, so that acute lung injury can be fundamentally and comprehensively treated.

The invention discloses a stem cell freezing and storing medium and a preparation method and freezing and storing method thereof. The stem cell freezing and storing medium comprises, by weight, 3-10 parts of dimethyl sulfoxide, 2-7 parts of human serum albumin, 0.5-3 parts of mycose, 0.2-2 parts of dextran 40 and 2-6 parts of hetastarch. Cells can be frozen for a long time by the stem cell freezing and storing medium, freezing damage of the cells can be remarkably reduced, the resuscitated cells have a high degree of survival rate and adherent property, and freezing and storing effect of the cells is improved; meanwhile, the compositions of the stem cell freezing and storing medium are clear and are medical compendial injection-grade excipients without containing serum, the risk of contamination and allergen introduced by the use of heterogeneous serum is effectively prevented, the content of DMSO (dimethylsulfoxide) is low, the negative effect of the DMSO on the cells is lowered, highsecurity and good stability are achieved, requirements of CFDA (China food and drug administration) and FDA (food and drug administration) are met, and the stem cell freezing and storing medium can be directly used in human infusion and is suitable for clinical research and treatment.

The invention provides a preparation method for efficiently extracting separating high-purity flavone components from ginkgo leaf. The main components are kaempferol-3-O-2'', 6''-dirhamnosylglucoside, rutin, quercetin glucosyl rhamnoside, kaempferol-3-O-rutinoside, isorhamnetin-3-O-rutinoside, quercetin p-coumaroyl glucose rhamnoside and kaempferol p-oumaroyl glucose rhamnoside. The preparation method comprises the following steps: pulverizing the medicinal material ginkgo leaf, adding an alcohol water solution to carry out extraction, concentrating, carrying out nonpolar macroporous adsorbent resin column chromatography on the filtrate, carrying out two-dimensional separation with a novel silica gel substrate bonded material, eluting with a methanol solution, collecting the eluate, concentrating, and drying to obtain the gingko flavone components. The invention enhances the target component content, and obtains the flavone components with definite content. The extraction and separation process has the advantages of high repetitiveness and favorable operability, and is suitable for large-scale preparation of flavone components by separation from ginkgo leaf. The flavone components can be used as a raw material for Shuxuening injections.

The invention relates to the molecular medicine and gene treating field, in particularly, a gene segment which is new, cell target special, and can eliminate replication ability and synthesizing ability of nucleocapsid protein from source and clean the pollution protein. The gene segment is composed of a recombinant aden-associated virus vector helper plasmid non-structure and/or structure gene, and at least one copy cell special microRNA target sequence which can be used in multiple cell strains directly, and also can be used for constructing recombinant aden-associated virus plasmid and vector to prepare medicine, basic medicine and clinic gene treating.

The invention provides an undifferentiated anti-aging amplification culture medium for human umbilical cord/adipose tissue-derived stem cells. The problem in the prior art that a serum-free medium used for culturing mesenchymal stem cells is easy to differentiate and easily causes aging and apoptosis of adult stem cells is solved. The undifferentiated anti-aging amplification culture medium for human umbilical cord/adipose tissue-derived stem cells comprises cell factors, vitamins and chemical small molecules, and the culture system comprises multiple chemical small molecules and biomacromolecules and has the effects of improving physiological metabolism and proliferation and growth potential of cells, resisting oxidative stress response, scavenging free radicals, preventing DNA mutation, protecting mitochondria, reducing molecular wastes in the cells and activating longevity genes and telomerase.

The invention relates to a serum-free adipose tissue-derived mesenchymal stem cell culture medium, which consists of a basic culture medium and added ingredients, wherein the basic culture medium is DMEM-LG, and the added ingredients and the content of each added ingredient are shown as follows: 5 to 20ng/mL of alkaline fiberblast growth factors, 5 to 20ng/mL of epidermal growth factors, 100U/mL of penicillin, 100 micrograms/mL of streptomycin, 50 to 200 micrograms/mL of heparin, 2 to 8mM of L-glutamine, 100 to 300 microM of 2-mercaptoethanol, 500 to 2000U/mL of leukaemia inhibitory factors and 0.5 to 2mM of sodium pyruvate. The serum-free adipose tissue-derived mesenchymal stem cell culture medium does not contain the serum, so that the inter-batch difference and the influence of the serum component on the cell culture can be avoided; the exogenous pollution of the serum and the toxicity of the serum on the cells can be avoided; and the ingredients are clear, so that the research of the psychological regulation mechanism of the cells can be facilitated.

The invention discloses a high safety battery electrolyte solution, which includes an electrolyte and a solvent. The solvent is a mixed solvent of carbonic ester and a fluoro-ether solvent. The electrolyte solution provided by the invention can significantly improve the safety performance of batteries, and effectively prevent electrolyte solution combustion or even explosion due to overheat of batteries.

The invention discloses a novel electrolysis system applicable to a lithium titanate battery. The novel electrolysis system comprises electrolyte and a solvent, wherein the solvent is a mixed solvent of an ether solvent and an carbonic ester solvent comprising cyclic carbonate and the mass ratio of the ether solvent to the carbonic ester solvent is (1-x):x, wherein x is larger than 0 and less than or equal to 0.9. The electrolysis system provided by the invention well accords with an existing lithium titanate battery, has no need of replacing a film, an anode material and a shell, can effectively inhibit the flatulence phenomenon of the lithium titanate battery, and has a wide application prospect in the fields of power batteries and energy storage batteries.

The invention relates to a new type 2, 3, 5, 4'- tetra-hydroxyl diphenyl ethylene-2-O-beta-D-glucoside crystal, a method for making same, and pharmaceutical compositions containing the crystal. The content of the crystal is 90-99. 9tested by high performance liquid chromatography, and the stilbene glucoside crystal of high-purity is obtained by abstracting fleece-flower root, extracting with an organic solvent, separating by column chromatography and crystallizing in appropriate dissolvent. The preparing process provides high yield, low cost, and is suitable for industrial production.

The invention discloses a serum-free culture medium for human umbilical cord MSCs (mesenchymal stem cells). The serum-free culture medium comprises the major ingredients of amino acid, inorganic salt ingredients, growth factors and albumin ingredients. The serum-free culture medium for human umbilical cord MSCs does not contain any serum ingredients; in addition, the ingredients are clear; the foreign protein pollution and pathogenic microorganism risks are avoided; the biosecurity problem of the MSCs clinic application is solved. When the serum-free culture medium provided by the invention is used for culturing the human umbilical cord MSCs, the high-quantity high-purity safe and high-quality umbilical cord MSCs can be obtained in vitro; meanwhile, the cell survival rate can be improved; the stem cell characteristics are maintained. The problem of insufficient cell quantity can be solved; the cell number, the survival rate and the immunophenotyping in each batch are more stable; the relevant index requirements are met.

The present invention relates to an antioxidant and anti-aging astaxanthin health-care composition and preparation method thereof. The composition comprises the following components in parts by weight: astaxanthin 120-160 parts, lycopene 83-133 parts, and grape seed extracts 67-89 parts. The composition can be processed into hard capsules, soft capsules and oral liquid by adding accessories accepted by the pharmaceutical technology. By using astaxanthin, lycopene, and grape seed extracts as raw materials, aiming at the physical signs and food culture features of Chinese people, and scientifically quantifying and blending the raw materials, the composition maximally exerts the synergistic effect of anti-oxidation, and makes the functional features of these three varieties complement each other, thus leading to comprehensive antioxidant effect and remarkable anti-aging effect.

The invention discloses a serum-free and DMSO-free cell cryopreservation solution, which comprises a 16.762-16.825 g/L DMEM/F-12 basal culture medium, 32-34 mg/L cytokines, 0.2-0.8 mg/L hydroxyethyl starch, 1-3 mg/L vitamins, 0.15-0.16 g/L antibiotics, 5-6 mg/L protein polypeptide, 1-4 mg/L lipids and a 0.1-0.41 g/L intracellular and extracellular cryoprotectant. According to the technical scheme,the obtained cell cryopreservation solution does not contain serum or DMSO components, the components of the formula are determined, the cell cryopreservation solution has high biological safety andclinical application prospects, and the cell cryopreservation liquid has a cell recovery survival rate of more than 85%, can maintain good cell activity and good physiological characteristics, and issuitable for the related research fields of primary cells and stem cells.

The invention relates to a protein-free medium suitable for large-scale cultivation and antibody production of NSO cells, which is a protein-free medium provided with clear chemical compositions. The compositions of the protein-free medium comprises 21 types of amino acid, 13 types of vitamin, 8 types of salt, 4 types of fat, 6 types of microelement, progesterone, sodium bicarbonate, Hepes, glucose, a citric acid, taurine, thymidine, adenine, hypoxanthine, phenol red, mercaptoethanol and Pluronic F-68. The protein-free medium has the advantages that the protein-free medium can support long-term subculture of the NSO cells without the necessity of adaptation, can well support normal growth and antibody expression of the NSO cells, does not contain proteins, various hydrolysate and animal origin compositions, has clear chemical compositions, is favorable for separation and purification of products, improves the quality of medical and biological products, and is convenient to prepare and suitable for mass production and application.

The invention discloses an earthworm protein polypeptide preparation, its preparation method and application. The protein polypeptide preparation is prepared by hydrolyzing the earthworm homogenate coarse extract or hydrolyzing the earthworm homogenate coarse extract to obtain the hydrolyzed protein polypeptide, separating by a hyperfiltration membrane with different hole diameter to obtain the protein polypeptide ingredients with different hole diameter. Test proves that the earthworm protein polypeptide preparation has good angiotensin converting enzyme after enzyme hydrolysis and can effectively prevent the high blood pressure. The invention provides a preparation method for the earthworm protein polypeptide preparation with strong operability, high efficiency and realizes an industrialization big production.

The invention belongs to the technical field of medicaments and provides active ingredients of Chinese herbal medicine camptosorus sibiricus and an extraction method and use of the same. The extraction method comprises a water extraction method, an alcohol extraction method, a macroporous resin purification method and a solvent extraction method. The main active ingredients of an extract obtained by the method are total flavonoids, total momordica saponins and total organic acids, wherein the content of the total flavonoids is 1 to 35 percent, the content of the total momordica saponins is 1 to 25 percent and the content of the total organic acids is 1 to 3 percent. The invention also provides a method for preparing the camptosorus sibiricus into a proper formulation directly or by mixing with solid or liquid commonly used for preparations of the type in pharmaceutics. The active ingredients of the camptosorus sibiricus and the preparation thereof have functions of treating thromboangiitis obliterans, nephritis, traumatism and bleeding, metrorrhagia, neurodermitis, hemiplegia caused by cerebral embolism and diabetes-related complications. The extraction method is simple, easy to implement and low in cost. And the extract obtained is free from toxic and side effects.