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179 results about "Mucoproteins" patented technology

Conjugated proteins in which mucopolysaccharides are combined with proteins. The mucopolysaccharide moiety is the predominant group with the protein making up only a small percentage of the total weight.

Method for preparing high-purity taste-removing purple sweet potato pigment

The invention discloses a method for preparing a high-purity taste-removing purple sweet potato pigment, and belongs to the field of food additives and agricultural product deep processing. The method for preparing the high-purity taste-removing purple sweet potato pigment comprises the steps that 1, pretreatment is conducted on purple sweet potato raw materials; 2, the purple sweet potato pigment is extracted from low-frequency microwave auxiliary acidified aqueous solution; 3, preliminary purification is conducted on macroporous resins; 4, high-speed counter-current chromatography separation and purification are conducted, and the taste-removing purple sweet potato pigment with concentration more than 95% is obtained. According to the method for preparing the high-purity taste-removing purple sweet potato pigment, the microwave auxiliary acidified aqueous solution is used for extraction, flocculants are added to flocculate mucoproteins, then macroporous resin static adsorption and dynamic elution are conducted, and the taste-removing and enrichment purification process is preliminarily accomplished, and the high-purity taste-removing purple sweet potato pigment is finally prepared through the high speed counter-current chromatography method in a separation mode. According to the method for preparing the high-purity taste-removing purple sweet potato pigment, technological processes are advanced, separation efficiency is high, recovery rate is high, product purity is more than 95%, preparation amount is large, an obtained product is free of peculiar smell, has few impurities and is good in solubility, and method for preparing the high-purity taste-removing purple sweet potato pigment is easy to popularize and use.
Owner:NINGBO HAITONG FOOD SCI & TECH CO LTD +1

Preparation method of saliva extracellular vesicles and application of saliva extracellular vesicles to molecular diagnosis

The invention discloses a preparation method of saliva extracellular vesicles and application of the saliva extracellular vesicles to molecular diagnosis.The preparation method includes the steps of removing high-abundance proteins from saliva samples, filtering out mucoproteins, separating and extracting the extracellular vesicles, characterizing the obtained extracellular vesicles, extracting extracellular vesicle proteins, identifying the extracellular vesicle proteins and applying the extracellular vesicle proteins to lung cancer biomarker discovery.Currently, a normalized saliva extracellular vesicle preparation technology is absent, and high-abundance protein interference and background impurity interference, existing in existing preparation technologies, result in shortcomings of low extracellular vesicle recovery rate, fewer identified proteins and the like, so that true extracellular vesicle proteomics information can be reflected difficultly.The preparation method of the saliva extracellular vesicles and application of the saliva extracellular vesicles to molecular diagnosis have the advantages that saliva of healthy adult volunteers and lung cancer patients is taken as the samples, and an affinity chromatography and membrane separation combined technology is adopted, so that after the high-abundance proteins and the mucoproteins of the saliva are removed, the extracellular vesicles in the saliva are extracted centrifugally, proteomes of the extracellular vesicles are analyzed and more extracellular vesicle proteins are identified.
Owner:SHANGHAI JIAO TONG UNIV

Cultivation in vitro method for artificial cartilage or bone cartilage with different curve and bioreactor thereof

The invention discloses a method for culturing an artificial cartilage with different curved surfaces or a bone cartilage under the action of rolling load and sliding load. The method comprises an incubator which contains O2 and CO2 and can perform temperature adjustment and cell culture, perfusion and other conditions which are used for keeping culture solution fresh, and active factors which are added to the culture solution. The method is characterized in that culture blanks with different curved surfaces are fixed on the bottom plate of a culture room; during the culturing process, a culture is subjected to the effect of the rolling load and the sliding load simultaneously, and the culture is cultured into cartilage tissues or bone cartilage complex tissues. The method has the advantages that under the effect of the rolling load and the sliding load, the loading way of the method is closer to the mechanical environment of the growth and the development of the cartilage tissues; and under the loading condition, the method is favor of the growth and the development of cells and tissues. An experiment shows that mucopolysaccharide secreted by cartilage cells under the effect of the rolling load and the sliding load is higher than the mucopolysaccharide secreted by the cartilage cells only under the effect of the rolling load. After being cultured, the cultures with different shapes can be taken as implants, and the method of the invention is applied in repairing the defect of the cartilage in different parts.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Chimeric antigen receptor and expression gene thereof, double-antigen regulated type T cell modified by chimeric antigen receptor, and application thereof

The invention relates to a chimeric antigen receptor and an expression gene thereof, a double-antigen regulated type T cell modified by the chimeric antigen receptor, and application thereof. The expression gene of the chimeric antigen receptor comprises a first fusion protein expression gene and a second fusion protein expression gene, wherein the first fusion protein expression gene comprises a mucoprotein-1 antibody expression gene, a notch receptor expression gene and a Gal4-VP64 transcription activating protein expression gene which are sequentially connected; the second fusion protein expression gene comprises a Gal4-UAS promoter expression gene and an anti-mesothelin expression gene which are sequentially connected. By adopting the innovative design, the chimeric antigen receptor has the advantages that the chimeric antigen receptor can be successfully imported into the T cell to form the T cell modified by the chimeric antigen receptor; the immune reaction cannot be produced until the mucoprotein-1 and the anti-mesothelin signals simultaneously exist, so as to reach the controllable immune reaction of the chimeric antigen receptor, fewer side effects in treatment, and high specificity.
Owner:深圳华云生物技术有限公司

Method for detecting miRNA (micro ribonucleic acid) in stomach juice

InactiveCN102127601ASolve the detection problem of low miRNA contentAvoid interferenceMicrobiological testing/measurementRNA extractionGastric fluid
The invention discloses a method for detecting miRNA (micro ribonucleic acid) in stomach juice, which comprises stomach juice extraction and neutralization, RNA release, chloroform extraction, isopropanol precipitation, ethanol washing, RNA reverse transcription, PCR (Polymerase Chain Reaction) detection and other steps. In the detection method, a sodium hydroxide solution is used to liquefy viscous components in the stomach juice, so that mucoproteins and polysaccharides are suspended in the solution, and the stomach juice is neutralized; trypsinase is added to carry out digestion, so that the mucoproteins and other proteins can be hydrolyzed, and cell components in the stomach juice are loosened at the same time, thereby facilitating centrifugal separation; and a Trizol solution is added to carry out repeated blow and beat, so that the RNA is completely released and separated from the polysaccharides, the mucoproteins and other impurities, thereby solving the problem that the RNA extraction can be disturbed by the acidity of the stomach juice as well as polysaccharides, mucoproteins and the like in the stomach juice. Thus, the invention can eliminate the disturbance caused by polysaccharides, proteins and other impurities in the stomach juice, complete the efficient extraction of miRNA in the stomach juice and carry out fluorescent quantitative PCR detection on the extracted miRNA.
Owner:NINGBO UNIV
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