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60 results about "Globulin G" patented technology

Compound probiotic agent for improving immunity of dogs and reducing incidence of diarrhea as well as preparation method and application thereof

ActiveCN107058158AImprove immunityControl white blood cell countBacteriaDigestive systemInterleukin 6Feces
The invention discloses a compound probiotic agent for improving immunity of dogs and reducing incidence of diarrhea as well as a preparation method and application thereof, and belongs to the field of the compound probiotic agent. The compound probiotic agent is prepared by mixing and compounding a lactobacillus plantarum KT-Lp9 microbial agent, a lactobacillus casei zhang microbial agent, a lactobacillus plantarum P-8 microbial agent, a bifidobacterium animalis subsp. lactis V9 microbial agent and a dilution carrier, wherein the quantity of viable bacteria of the four kinds of microbial agents is more than or equal to 2*10<11>CFU/g. The compound probiotic agent with different contents of viable bacteria only can be applied to 96 dogs at different ages for 60 days, so that the immunity of the test dogs can be improved, and the incidence of diarrhea and the sickness degree are reduced. Main representations are that the feed intake and growth rate of the dogs are increased, leukocyte counts, lymphocytes counts and neutrophil counts in blood are controlled, and the contents of four immunologic factors including immune globulin G, interleukin 6, interferon alpha and tumor necrosis factor alpha in the blood can be increased; and meanwhile, the content of secretory immunoglobulin A (SigA) in excrement is increased.
Owner:INNER MONGOLIA SCI PLUS BIOTECH

Micro-fluidic chip immunoassay kit and detection method thereof

The invention discloses a micro-fluidic chip immunoassay kit and a detection method thereof. The kit comprises a micro-fluidic chip, a wafer cover plate and a wafer bottom plate, wherein the wafer cover plate and the wafer bottom plate are bonded up and down. One or more detection units are arranged in the wafer bottom plate, and each detection unit comprises a liquid storage tank, a mixed reaction tank, a detection tank, a waste liquid tank and a first vent hole which are connected in sequence; the mixed reaction tank is fixedly provided with a fluorescent probe corresponding to a detection drug; goat anti-mouse immune globulin G and corresponding drug antigens are fixed in the detection tank. The invention also discloses a detection method using the kit. The method has the characteristics of high flux, low sample consumption, high detection speed, simplicity and convenience in operation and the like; the method has the advantages of no need of an electrode, a voltage or an external magnetic field, no need of electroosmosis driving, hot air pump driving or optical capture micropump driving, simultaneous detection of various veterinary drug residues in various matrixes, suitableness for on-site rapid screening analysis, and great alleviation of the detection pressure of related detection personnel.
Owner:SOUTH CHINA AGRI UNIV

Co-production method for extracting bioactive substances from pig blood

The invention discloses a co-production method for extracting bioactive substances from pig blood. The co-production method comprises immune globulin G extraction, heme iron and protein peptide extraction and superoxide dismutase (SOD) extraction. The immune globulin G extraction orderly comprises carrying out salting-out to remove a fibrous protein and to obtain blood serum and repeating salting-out extraction three times to obtain immune globulin G crude extract. The heme iron and protein peptide extraction comprises breaking blood cells in a blood cell liquid, carrying out press filtration, respectively collecting a supernatant and precipitates, drying the precipitates at a low temperature to obtain heme iron powder, carrying out decoloration of the supernatant by activated carbon, carrying out spray drying to obtain a protein peptide finished product. The SOD extraction comprises collecting residues obtained by the blood cell breaking, carrying out extraction and washing, carrying out press filtration, collecting a supernatant which is a crude enzyme liquid, carrying out separation by acetone, collecting precipitates, heating, washing by acetone, carrying out press filtration, collecting precipitates, washing the precipitates by ethanol, and carrying out freeze drying to obtain SOD. The co-production method fully utilizes raw materials, realizes extraction of four high-additional value products from pig blood, has a high equipment utilization rate and simple extraction processes, and is suitable for industrial production.
Owner:HUAIBEI ENBI FEED

Absolute quantitative analysis of IgG glycopeptide in serum

The invention provides an absolute quantitative analysis of immune globulin G (IgG) glycopeptide in serum. The technical process comprises two parts: on the one hand, performing two-dimensional hydrophilic chromatography purification preparation of an IgG glycopeptide standard product and quantitative analysis thereof; on the other hand, performing the IgG glycopeptide absolute quantitative analysis in a serum sample by adopting a standard adding way. The preparation of the glycopeptide standard is performed by adopting the standard IgG, the preparation comprises: releasing of the glycopeptide, enriching of IgG glycopeptide through a reversed-phase chromatography, and separation purification and mass spectrum representation of the two-dimensional hydrophilic chromatography; the quantitative analysis performs PNGase F carbohydrate chain releasing on the glycopeptide standard, performing MRM quantitative analysis on the deglycosylated IgG glycopeptide fragment by adopting an internal standard curve, thereby acquiring molar concentration of each purified IgG glycopeptide; the IgG glycopeptide content determination in the serum is realized through a standard adding method, that is, onepart is added with the IgG glycopeptide standard with the known concentration, and the other part is free from adding the IgG glycopeptide standard, and then the MRM analysis is performed, the content of the IgG corresponding glycoform glycopeptide in the serum is computed according to the peak area difference and the adding standard glycopeptide concentration. On this basis, the glycopeptide absolute corresponding factor can be computed.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Aggregation-induced emission microsphere based on N-hydroxyethyl-1, 8-naphthalimide tetraphenyl ethylene derivative and application of aggregation-induced emission microsphere

The invention discloses an aggregation-induced emission microsphere based on an N-hydroxyethyl-1, 8-naphthalimide tetraphenyl ethylene derivative and application of the aggregation-induced emission microsphere, and belongs to the field of analysis and detection. The aggregation-induced emission microspheres are prepared by taking N-hydroxyethyl-1, 8-naphthalimide tetraphenylethylene derivatives as AIE molecules through a swelling method, then the aggregation-induced emission microspheres are used for preparing the immunochromatography test strip for quantitatively detecting amino-terminal B-brain natriuretic peptide, and the test strip structurally comprises a PVC (polyvinyl chloride) bottom plate, a nitrocellulose membrane, a binding pad, a sample pad and a water absorption pad. An aggregation-induced emission microsphere-labeled anti-amino-terminal B brain natriuretic peptide labeled antibody is sprayed on a combination pad of the immunochromatography test strip, the nitrocellulose membrane is provided with a detection area (T line) and a control area (C line), and a specific labeled antibody (coated antibody) and an anti-immune globulin G antibody (secondary antibody) are respectively sprayed on the detection area (T line) and the control area (C line). Compared with a traditional FITC fluorescent test strip, the sensitivity is improved by 14 times, and the fluorescent test strip has the advantages of being easy and convenient to operate, rapid in quantification, convenient to carry, small in sample dosage and the like.
Owner:NANCHANG UNIV

Chemiluminiscence detection kit of streptococcus mutans and application method of chemiluminiscence detection kit

The invention discloses a chemiluminiscence detection kit of streptococcus mutans and an application method of the chemiluminiscence detection kit. The kit comprises immune globulin G coupling magnetic beads, enzyme-labeled vancomycin, an enzymatic chemiluminiscence substrate, a standard streptococcus mutans suspension, a buffer solution and washing liquid. The application method is characterized in that the vancomycin which is simple, cheap and stable is used as the molecular-recognition reagent, the vancomycin is used along with the specific molecular-recognition reagent immune globulin G to form a double-site molecular recognition mode, and the double-site molecular recognition mode is combined with the enrichment and separation technology and the enzymatic chemiluminiscence technology to perform whole-cell detection of the streptococcus mutans. The detection kit is fast in detection, convenient, accurate, specific, sensitive, stable and cheap, is hopefully applicable to the field detection and fast screening of the streptococcus mutans, and is capable of providing a powerful technical support platform for the streptococcus mutans detection in fields such as clinical diagnosis, food safety and environment detection.
Owner:SOUTHWEST UNIVERSITY

Anti-pollution polypeptide, nerve electrode modified by anti-pollution polypeptide, modification method of nerve electrode and application of anti-pollution polypeptide

The invention relates to an anti-pollution polypeptide, a nerve electrode modified by the anti-pollution polypeptide, a modification method of the nerve electrode and an application of the anti-pollution polypeptide. The anti-pollution polypeptide comprises a connecting section, a supporting section, an anti-protein adsorption section and a neuron adhesion section which are connected in sequence;and the anti-protein adsorption section comprises a zwitterionic polypeptide fragment. According to the anti-pollution polypeptide, through electrostatic interaction between charged side groups of thezwitterionic polypeptide fragment and water molecules, the adsorbability of the surface of the nerve electrode to common proteins such as lysozyme, fibrinogen, immune globulin G and human serum albumin is reduced; and meanwhile, the connecting section, the supporting section, the anti-protein adsorption section and the neuron adhesion section are matched with one another, so that the protein pollution resisting function of the polypeptide is guaranteed, the adhesion of the modified surface to neuronal cells is improved, and the long-term signal regulation and measurement stability of the neural electrode in a biological environment is effectively improved.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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