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173 results about "Horse-radish" patented technology

Bioelectrochemical sensor used for detecting hydrogen peroxide and manufacturing method thereof

InactiveCN102654475ASolving unsolvable enzyme directional problemsSolve Orientation IssuesMaterial electrochemical variablesPlatinumHorse radish peroxidase
The invention relates to a bioelectrochemical sensor used for detecting hydrogen peroxide and a manufacturing method of the bioelectrochemical sensor. The novel bioelectrochemical sensor is a sensor with a three-electrode system, wherein the counter electrode is a platinum electrode, the reference electrode is saturated calomel electrode and the working electrode is gold electrode. The sensor is based on orientation combination of a polypeptide horse radish peroxidase with characteristic sequence, the promotion effect of the polypeptide horse radish peroxidase on the activity of the enzyme and the characteristic of high sensitivity of electrochemical detection methods. The sensitivity of hydrogen peroxide sensors is effectively improved and satisfactory results are obtained.
Owner:SHANGHAI UNIV

Washable easily-colored wool fabric treatment process

The invention discloses a washable easily-colored wool fabric treatment process, belongs to the technical field of wool fabric processing, and aims to solve the technical problem that the dyeing degree, the anti-felting performance and the color fastness of wool fabrics in the prior art need to be further improved. The method includes the following steps that disulfide bonds of wool fibers are opened through L-cysteine, the washable and easy-to-color wool fabric is obtained, the pretreated wool fibers prepared through the method are grafted with methoxy polyethylene glycol methacrylate under catalysis of hydrogen peroxide and horse radish peroxidase, modified wool fibers are obtained, and the washable and easy-to-color wool fabric is obtained. After the modified wool fibers are woven into the wool fabric, the wool fabric is respectively subjected to padding modification by using the modified dye solution and the finishing liquid, so that the degree of dyeing, the anti-felting performance and the color fastness of the wool fabric are improved.
Owner:BIEM L FDLKK GARMENT CO LTD

Glucan-based HRP-goat anti-mouse IgG labeled antibody and preparation method thereof

The invention discloses a dextran-based HRP-goat anti-mouse IgG labeled antibody and a preparation method thereof, and the preparation method is characterized by comprising the following steps: S1, oxidizing dextran to obtain aldehyde group-containing dextran; s2, carrying out polymerization on the dextran containing the aldehyde group and horse radish peroxidase, so as to obtain a horse radish peroxidase polymer; s3, performing desalination and ultrafiltration on the horse radish peroxidase polymer to obtain an ultrafiltration product I; s4, connecting a goat anti-mouse IgG antibody to the ultrafiltration product I to obtain oxidized glucan coupled with goat anti-mouse IgG and HRP enzyme; and S5, purifying the oxidized dextran of the product coupled with the goat anti-mouse IgG and the HRP enzyme, so as to obtain the dextran coupled HRP-goat anti-mouse IgG labeled antibody. The dextran product obtained by the invention is wide in molecular weight coverage, different molecular weights can be selected to design polymer substances with different sizes, the number of aldehyde groups can be controlled to control coupling of different numbers of protein molecules under the same molecular weight, and the signal intensity is easy to control.
Owner:KAQIU (JIANGSU) BIOTECHNOLOGY CO LTD

Lasting aromatic lyocell fiber of biological enzyme immobilized temperature-sensitive microcapsule and preparation method of lasting aromatic lyocell fiber

The invention discloses a lasting aromatic lyocell fiber of a biological enzyme immobilized temperature-sensitive microcapsule and a preparation method of the lasting aromatic lyocell fiber, and relates to the technical field of polyester fabrics. The method comprises the steps that firstly, a temperature-sensitive microcapsule of a three-layer structure is prepared, an inner core contains aromatic substances of lavender essential oil, ambrota ether and rosin glycerin ester, a middle layer enables N-isopropylacrylamide monomers to be polymerized to form PNIPAM temperature-sensitive hydrogel, and a shell is a nanocellulose crystal-polydopamine compound; then spinning by taking the NMMO aqueous solution containing the microcapsules as an inner layer solution and taking the NMMO aqueous solution containing the eucalyptus pulp as an outer layer solution by adopting a coaxial micro-fluidic spinning technology; and finally carrying out crosslinking treatment through a biological enzyme coagulating bath, wherein the coagulating bath contains an NMMO aqueous solution, horse radish peroxidase and a hydrogen peroxide solution with gradient concentration. The aromatic lyocell fiber prepared by the invention has excellent temperature-sensitive aroma release performance and washing fastness, and solves the technical problems that microcapsules in traditional aromatic textiles are easy to break and fall off and aromatic substances are easy to volatilize.
Owner:SHANGHAI LYOCELL FIBER DEV

Hydrogel with self-enhanced piezoelectric effect as well as preparation method and application of hydrogel

The invention belongs to the technical field of biomedical materials and tissue regeneration, and particularly discloses hydrogel with a self-enhanced piezoelectric effect as well as a preparation method and application of the hydrogel. The hydrogel is prepared by taking microphone (MXene), cellulose nanofiber (CNF), tyramine grafted carboxymethyl cellulose (T-CMC) and regenerated silk fibroin (RSF) as main materials through an enzyme crosslinking reaction of horse radish peroxidase (HRP) and hydrogen peroxide (H2O2). The hydrogel has excellent mechanical properties, biocompatibility and safety, and can realize self-enhancement in vivo and generate stable piezoelectric signals. The piezoelectric stimulation can promote proliferation, migration and differentiation of osteogenesis-related cells and regulate and control a bone tissue microenvironment, so that formation and repair of new bones in a bone defect area are remarkably accelerated. The hydrogel can be used as an injectable or moldable bone tissue repair material, and is suitable for bone fracture, bone defect and other bone tissue regeneration scenes.
Owner:ZHONGSHAN HOSPITAL FUDAN UNIV

Double-crosslinking self-enhanced hydrogel based on endogenous glucose in-situ initiation as well as preparation method and application of double-crosslinking self-enhanced hydrogel

The invention discloses bi-crosslinking self-reinforced hydrogel based on endogenous glucose in-situ initiation as well as a preparation method and application of the bi-crosslinking self-reinforced hydrogel, and relates to the technical field of biomedical materials. The double-crosslinking self-enhanced hydrogel is prepared from the following components in concentration: 1 to 3 weight percent of hyaluronic acid-tyramine, 0.8 to 1.2 weight percent of sodium alginate, 1 to 100 mmol / L of calcium carbonate, 0.0001 to 10 U / mL of horse radish peroxidase, 20 to 40 U / mL of glucose oxidase and the balance of ultrapure water. The invention also discloses an application of the double-crosslinking self-reinforced hydrogel in preparation of a filling and repairing product for soft tissue defects. The hydrogel disclosed by the invention can be filled in a tissue defect part in an injection manner, glucose in body fluid is utilized to initiate crosslinking in situ to form the hydrogel with excellent mechanical properties and long-term stability, and meanwhile, the hydrogel is good in biocompatibility and relatively high in application value.
Owner:SICHUAN UNIV

Antibacterial dressing for promoting wound repair and regeneration and preparation method thereof

The invention discloses an antibacterial dressing for promoting wound repair and regeneration and a preparation method thereof, and the preparation method comprises the following steps: adding hydrogen peroxide into a silk fibroin aqueous solution to prepare a silk fibroin aqueous solution premixed with hydrogen peroxide; horse radish peroxidase is added into the dopamine modified sodium alginate solution, and the dopamine modified sodium alginate solution premixed with horse radish peroxidase is prepared. Preparing a chondroitin sulfate composite solution; uniformly mixing the silk fibroin aqueous solution premixed with hydrogen peroxide, the dopamine modified sodium alginate solution premixed with horse radish peroxidase and the chondroitin sulfate composite solution. Hydrogel formed by cross-linking silk fibroin and chondroitin sulfate is used as a main body material of the dressing, and meanwhile, dopamine modified sodium alginate is introduced, so that the dressing has the photo-thermal antibacterial characteristic; magnesium oxide microspheres are introduced as a pore-foaming agent, micropores are formed in the dressing, and the liquid absorption property and the air permeability of the dressing are improved; the umbilical cord mesenchymal stem cell exosome is introduced, so that angiogenesis at the wound is promoted, and the wound healing promoting capability of the dressing is improved.
Owner:SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE

HA-PAS hydrogel for enhancing cartilage repair of early osteoarthritis and preparation method of HA-PAS hydrogel

The invention discloses HA-PAS hydrogel for enhancing cartilage repair of early osteoarthritis and a preparation method of the HA-PAS hydrogel. According to the hydrogel, formylated hyaluronic acid, hydrazide modified low-methoxyl pectin and phenylboronic acid modified alginate form a ternary polysaccharide skeleton, a double-dynamic cross-linked network is formed through acylhydrazone bonds and boric acid ester bonds, and a triple network structure is formed by combining permanent cross-linking catalyzed by horse radish peroxidase. The hydrogel integrates functional components such as nano-selenium, a pulullan-strontium chelate and a mesenchymal stem cell source exosome, so that multiple effects of resisting oxidation, resisting inflammation, promoting cartilage differentiation and repairing subchondral bones are achieved. The compression modulus of the hydrogel is 0.8-1.5 MPa, and the hydrogel can be injected for in-situ gelling and MMP responsive degradation, shows an excellent cartilage repair effect in animal experiments, and provides a new solution for treatment of early osteoarthritis.
Owner:THE FIRST HOSPITAL OF LANZHOU UNIV

Preparation method of double-enzyme glassy carbon electrode

The invention discloses a preparation method of a double-enzyme glassy carbon electrode, which comprises the following steps: placing a GCE electrode in a Piranha solution, cleaning the GCE electrode with distilled water, polishing the GCE electrode, and finally carrying out ultrasonic cleaning and drying. Carrying out activating treatment on the cleaned GCE electrode; the preparation method comprises the following steps: adding a mixture of tin dioxide and multi-walled carbon nanotube powder into a chitosan / acetic acid solution, and carrying out ultrasonic treatment, so as to obtain an MWCNTs-SnO2-CS nano compound; the preparation method comprises the following steps: modifying GCE by using a nano-composite to obtain GCE taking MWCNTs / SnO2 / CS as a modification material; choline oxidase and horse radish peroxidase are immobilized on GCE (Gelatin CE) which takes MWCNTs / SnO2 / CS as a modification material to prepare the double-enzyme GCE. The double-enzyme GCE prepared by the invention can be used for detecting the content of PC in crude oil, and a theoretical basis is provided for rapidly detecting the content of PC in crude oil.
Owner:1 HEILONGJIANG GREEN FOOD SCIENCE RESEARCH INSTITUTE

New method for rapidly detecting ochratoxin A based on electrochemical deposition polydopamine coating modified gold electrode

The invention discloses a novel method for rapidly detecting ochratoxin A based on an electrochemical deposition polydopamine coating modified gold electrode, and belongs to the technical field of analytical chemistry and biology. The method is based on a polydopamine coating, is combined with an ochratoxin A aptamer with high specificity and high affinity, introduces a DNA-modified nanogold compound as a signal carrier and a signal amplification element, and realizes high-sensitivity detection of ochratoxin A through current change generated by catalyzing H2O2 / TMB by horse radish peroxidase captured on the surface of an electrode.
Owner:FUJIAN UNIV OF TRADITIONAL CHINESE MEDICINE

Preparation method of stable Pickering emulsion based on enzymic method modified whey protein microgel particle-araboxylan covalent composite particle

The invention discloses a preparation method of a stable Pickering emulsion based on enzymic method modified whey protein microgel particle-araboxylan covalent composite particle, which comprises the following steps: preparing whey protein microgel particles by cross-linking glutamine transaminase, mixing the whey protein microgel particles with an araboxylan solution, and adding an enzyme method modified whey protein microgel particle-araboxylan covalent composite particle to prepare the Pickering emulsion. Adding horse radish peroxidase and a hydrogen peroxide solution to carry out enzymatic modification to obtain a water phase, mixing the oil phase and the water phase according to a volume ratio, carrying out IKA homogenization, and then carrying out ultrasonic treatment to obtain a Pickering emulsion with stable covalent composite particles; the preparation method is simple, harmful substances cannot be generated in the preparation process, and meanwhile, the preparation method is low in production cost, short in production period, rich in nutrition, green, free of pollution and high in economic utilization value; the obtained Pickering emulsion has high viscosity and excellent storage stability and environmental stability, an effective delivery carrier construction strategy is provided for construction of a fat-soluble and heat-sensitive bioactive micromolecule delivery system, and the application range of protein microgel particles in the fields of food, medicine and the like is widened.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Horseradish peroxidase-labeled secondary antibody compound as well as preparation method and application thereof

The invention relates to the technical field of chemiluminescence immunoassay, and discloses a horse radish peroxidase-labeled secondary antibody compound and a preparation method and application thereof, the horse radish peroxidase-labeled secondary antibody compound comprises a chitosan compound skeleton, and horse radish peroxidase and a secondary antibody carried on the chitosan compound skeleton; the chitosan compound skeleton is a macromolecular skeleton compounded by a chitosan spherical cross-linking body and dopamine. Through optimization and improvement of a polymer skeleton, the problems of large steric hindrance, low sensitivity and non-specific staining of a traditional polymer can be solved, and further improvement of the sensitivity of a DAB staining method for immunoassay detection is facilitated; the adopted chitosan compound skeleton has abundant amino groups, can bear more labeled enzymes and secondary antibodies, reduces steric hindrance, increases the penetrating power to a cell nuclear membrane, and improves the detection sensitivity.
Owner:HANGZHOU YIMEILUOKE MEDICAL SCI & TECH CO LTD

Drug-loaded sophorolipid microspheres, preparation method thereof and application of drug-loaded sophorolipid microspheres in preparation of bionic cartilage scaffold

The invention provides a drug-loaded sophorolipid microsphere, a preparation method thereof and application of the drug-loaded sophorolipid microsphere in preparation of a bionic cartilage scaffold. The preparation method of the drug-loaded sophorolipid microspheres comprises the following steps: (1) preparing a drug-containing sophorolipid solution; (2) preparing multiple emulsion; and (3) adding a horse radish peroxidase solution into the multiple emulsion for reaction to obtain the drug-loaded sophorolipid microspheres. The bionic cartilage scaffold sequentially comprises a bone layer, a transition layer and a cartilage layer from bottom to top, the bone layer is a cross-linked compound of nano-hydroxyapatite and drug-loaded sophorolipid microspheres; the transition layer is a physical mixture of nano-hydroxyapatite and drug-loaded sophorolipid microspheres; the cartilage layer is drug-loaded sophorolipid microspheres. The drug-loaded sophorolipid microspheres disclosed by the invention have good biocompatibility, excellent biocompatibility and good mechanical properties. The bionic cartilage scaffold utilizes the characteristics of the nHA and the drug-loaded sophorolipid microspheres to form a unique network structure, so that material failure caused by mechanical mismatching is avoided.
Owner:SHANDONG FENGJIN MEIYE TECH CO LTD

Modified Viral Genome Compositions and Methods of Production and Use Thereof

Nucleotide compositions, recombinant vectors, and recombinant viral genomes are disclosed that include a modified horseradish peroxidase (HRP) gene sequence, as well as recombinant viruses that have the modified HRP gene sequence incorporated into the viral genome thereof. The recombinant viruses are utilized in an HRP-based assay to analyze the neutralization potential of candidate antiviral agents, such as antiviral antibodies.
Owner:BOARD OF REGENTS FOR THE OKLAHOMA AGRI & MECHANICAL COLLEGE ACTING FOR & ON BEHALF OF OKLAHOMA STATE UNIV

A glucose detection test strip and a preparation method and application thereof

The application provides a glucose detection test strip and a preparation method and application thereof. The preparation method of the glucose detection test strip comprises the following steps: taking copper sulfate pentahydrate, a phosphate buffer solution, glucose oxidase and horseradish peroxidase, mixing uniformly to obtain an enzyme-containing mixed solution; immersing a test strip in the enzyme-containing mixed solution, and obtaining an organic-inorganic hybrid nanoflower loaded test strip after reaction; immersing the organic-inorganic hybrid nanoflower loaded test strip in a mixed solution containing a chromogenic agent, a gel, bovine serum albumin and polyethylene glycol to obtain a glucose detection test strip. The preparation method of the glucose detection test strip has higher sensitivity and shorter response time.
Owner:BEIJING KANGYUJIAN MEDICAL DEVICES CO LTD

Core-shell structure up-conversion nano-composite, preparation method and application

The invention discloses an up-conversion nano-composite with a core-shell structure, a preparation method and application, and belongs to the technical field of biomedical bimodal nano-probes. According to the nanocomposite, up-conversion nanoparticles (UCNPs) serve as a core, metal-organic frameworks (MOFs) serve as a shell layer, horse radish peroxidase (HRP) is loaded on the shell layer, and UCNP (at) MOF / HRP is formed. Subsequent biological functional modification, such as coupling of an antibody, an antigen, nucleic acid and other substances, can be carried by an activating group or a metal coordination bond carried by a shell ligand of the upconversion nanocomposite MOF with the core-shell structure, so that the functions of specific recognition, targeted capture, specific loading and the like are realized.
Owner:SHANGHAI XINKEWEI BIOTECHNOLOGY CO LTD

Chemiluminescence immunoassay method and kit for detecting progestational hormone of panda

The invention discloses a chemiluminescence immunoassay method and kit for detecting progestational hormone of pandas, and belongs to the technical field of biological detection. The specific process comprises the following steps: by taking goat anti-mouse IgG as a coating antibody, enabling a progestational hormone standard substance or a to-be-detected sample and horse radish peroxidase labeled progestational hormone to compete with a limited amount of progestational hormone antibodies together; after incubation and washing, a chemiluminescent substrate is added, and quantitative analysis of the progestational hormone in the panda urine or excrement is realized by detecting the intensity of a luminescent signal according to a standard curve. The invention provides a novel chemiluminescence immunoassay method, the sensitivity of the chemiluminescence immunoassay method is far higher than that of a traditional ELISA method (the lowest detection line can reach 31.25 pg / mL), the operation is simple and convenient, the detection is rapid, and the urgent demand on rapid and accurate determination of the hormone level in panda pregnancy monitoring and reproduction management can be met.
Owner:SOUTHWEST UNIVERSITY FOR NATIONALITIES +1

Rapid detection kit and rapid detection method for phytosterol

The invention provides a rapid detection kit and a rapid detection method for phytosterol, and belongs to the field of food detection.The rapid detection kit for phytosterol comprises a phytosterol standard substance, a standard substance diluent, a substrate solution, an enzyme mixed solution, a stop solution and an elisa plate; the standard substance diluent comprises isopropanol or dimethyl sulfoxide; the substrate solution is prepared from TMB (Tetramethylbenzidine) and a substrate buffer solution; the enzyme mixed solution is a mixed solution of a cholesterol oxidase solution and a horse radish peroxidase solution. By optimizing the composition of each working reagent in the kit, the sensitivity and accuracy of phytosterol detection are remarkably improved. Meanwhile, the rapid detection method provided by the invention is simple and convenient to operate, short in detection time and suitable for on-site rapid detection.
Owner:武汉食安生物科技有限公司

Gelatin / gallic acid conjugate-based photo-thermal response type hydrogel as well as preparation method and application thereof

According to the hydrogel material disclosed by the invention, the gelatin / gallic acid conjugate with a specific concentration is taken as a base material, and the base material is cross-linked by utilizing a horse radish peroxidase / hydrogen peroxide combined enzyme catalysis system, so that an additional photo-thermal response material does not need to be added in the gelling process of the hydrogel; in the cross-linking process, the hydrogel serves as a cross-linked structure for forming the interior of the hydrogel and shows excellent photo-thermal responsiveness, and the hydrogel can respond to photo-thermal temperature rise to improve the self deformability, so that irregular wounds are better covered; therefore, the invention provides a hydrogel material which has good biological safety, oxidation resistance and bacteriostasis and can be used for wound injury repair.
Owner:ZHENGZHOU UNIV

High-stability horseradish peroxidase, recombinant expression vector, preparation method and application

The application discloses a high-stability horseradish peroxidase, a recombinant expression vector, a preparation method and application. The amino acid sequence of the horseradish peroxidase is shown as SEQ ID NO. 1. Compared with wild-type horseradish peroxidase, the enzyme activity of the horseradish peroxidase is increased by 3.2 times, and compared with commercially available horseradish peroxidase, the thermal stability is better. The method can produce the horseradish peroxidase by using a tobacco transient expression system. Compared with an Escherichia coli expression system and a yeast expression system, the tobacco transient expression system can correctly fold and glycosylate, and has higher enzyme activity and stability. The purity of the horseradish peroxidase obtained according to the method can reach RZ 3.2, the enzyme activity can reach 275 U / mg, and the horseradish peroxidase can be applied to immunological detection.
Owner:HUNAN NUOHEXIN BIOTECHNOLOGY CO LTD

A DAAO / HRP@MAF-7 hydrogel and its preparation method and application

The present invention belongs to the field of biosensor instant detection technology, and relates to a DAAO / HRP@MAF-7 hydrogel and its preparation method and application. The hydrogel is formed by immobilizing horseradish peroxidase HRP and D-amino acid oxidase DAAO in a hydrophilic metal organic framework MAF-7, and then the prepared DAAO / HRP@MAF-7 biocomposite material and the color developer TMB are co-loaded in a PEG-DA hydrogel. The DAAO / HRP@MAF-7 hydrogel can be used as a biosensor to detect D-amino acids.
Owner:DEZHOU UNIV

A detection kit for wheat allergen-specific IgE and a detection method thereof

The application relates to the field of biotechnology, and in particular to a wheat allergen specific IgE detection kit and a detection method thereof. The kit comprises magnetic particles, enzyme-labeled anti-human IgE antibodies and biotin-labeled wheat allergen. The wheat allergen is obtained by treating a wheat protein extract with heat treatment or a pretreatment agent. The pretreatment agent comprises one or more of sodium azide, L-cysteine and L-cysteine hydrochloride. The wheat allergen is biotin-labeled after specific pretreatment. The chemiluminescence immunoassay method uses streptavidin to prepare magnetic microspheres and horseradish peroxidase-labeled anti-human IgE antibodies. The method is fully automatic, ensures the accuracy of the detection result, and improves the test flux, the specificity and the sensitivity of the detection result.
Owner:AUTOBIO DIAGNOSTICS CO LTD

Black rice extract loaded photo-thermal response enhanced hydrogel as well as preparation method and application thereof

The invention provides photo-thermal response enhanced hydrogel loaded with black rice extract as well as a preparation method and application of the photo-thermal response enhanced hydrogel loaded with the black rice extract, and the photo-thermal response enhanced hydrogel is formed by taking a mixture of hyaluronic acid / tyrosine conjugate and the black rice extract as a base material under the cross-linking action of horse radish peroxidase / catalase, horseradish peroxidase acts on the black rice extract while serving as a cross-linking agent, the near-infrared photo-thermal responsiveness of the black rice extract after reaction of the horseradish peroxidase is greatly enhanced, and good oxidation resistance, inflammation resistance and photo-thermal responsiveness can be achieved only through a small amount of black rice extract in a hydrogel system.
Owner:ZHENGZHOU UNIV

A urine tyrosine detection system, a detection method and a detection kit

The application discloses a urine tyrosine detection system, a detection method and a detection kit. The detection system comprises a buffer solution, 4-aminoantipyrine, horseradish peroxidase and hydrogen peroxide, and the pH of the detection system is 6.5-7.8. After the sample to be detected is placed in the detection system and reacts at room temperature, the quantitative analysis of tyrosine can be realized by observing the color change of the reaction solution or testing the absorbance value of the reaction solution at 485 nm. Compared with the traditional Millon reaction and the multi-enzyme reaction system, the reagent used in the application has no toxicity and corrosion, does not cause hidden troubles to human health and environmental safety, is simple to operate, does not need special instruments and has low cost, and is conducive to realizing 'home health detection'.
Owner:HUAZHONG AGRI UNIV

Fibroin-based hydrogel optical fiber as well as preparation method and application thereof

The invention discloses a fibroin-based hydrogel optical fiber as well as a preparation method and application thereof, and belongs to the technical field of hydrogel optical fibers. According to the preparation method, the fibroin-based hydrogel optical fiber with a chemical-physical double-crosslinking structure is constructed through a synergistic strategy of enzymatic crosslinking and ethanol solution post-treatment; the preparation method comprises the following steps: performing degumming treatment by using a sodium carbonate solution to prepare a silk protein solution, respectively preparing a core solution and a coating solution by using the silk protein solution, a horseradish peroxidase solution and an H2O2 solution, injecting the core solution into gel, then using an ethanol solution to reinforce the mechanical properties of the core solution, and then coating the coating solution, thereby obtaining the high-strength and high-toughness fiber. Finally, the fibroin-based hydrogel optical fiber with excellent mechanical properties, low optical loss and good biocompatibility is obtained.
Owner:BEIJING NORMAL UNIV AT ZHUHAI

System for detecting ArsM in sample and detection device and application thereof

The invention discloses a system for detecting ArsM in a sample, a detection method, a detection device and application thereof. The detection system of the present invention comprises a clustered regularly spaced short palindromic repeat (CRISPR)-Cas complex comprising a guide RNA targeting ArsM and a CRISPR-related (Cas) protein or a functional fragment thereof; and a horse radish peroxidase (HRP) complex to which a single-stranded DNA (ssDNA) is linked. According to the invention, a cascade amplification detection system based on CRISPR / Cas12a is constructed, and the cascade amplification detection system is further integrated on a multi-channel paper-based microfluidic device to realize on-site high-throughput analysis of nucleic acid molecules.
Owner:INST OF GEOCHEMISTRY CHINESE ACAD OF SCI

Bone repair magnetic silk fibroin hydrogel as well as preparation method and application thereof

The invention discloses bone repair magnetic silk fibroin hydrogel as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing an injectable hydrogel matrix, superparamagnetic iron oxide nanoparticles, horse radish peroxidase and a hydrogen peroxide solution to obtain a component A; mixing alendronate sodium, calcium chloride, zinc chloride and sodium hydroxide to obtain a component B; and mixing the component A and the component B to obtain the bone repair magnetic silk fibroin hydrogel. The innovation of the invention lies in that the magnetic field oriented assembly and the chemical mineralization process are organically fused for the first time, and the double breakthrough of the mechanical strength and the biological activity of the material is realized through the multi-physical field coupling effect. The magnetic enhanced mineralization strategy not only overcomes the technical bottlenecks of insufficient viscosity and low mineralization efficiency of traditional hydrogel, but also provides a solution for accurate repair of complex bone defects by constructing a magnetic responsive bone regeneration microenvironment, and shows great clinical transformation potential.
Owner:SOUTHEAST UNIV

A method for in-situ synthesis of microcapsules by enzyme catalysis and its application in anticorrosive coatings

The application belongs to the field of material preparation, and particularly relates to a method for in-situ synthesis of microcapsules by enzyme catalysis and application thereof in anticorrosive coatings. The method specifically comprises the following steps: firstly, preparing a cellulose nanocrystal dispersion liquid and an emulsion of flaxseed oil containing cembrene; ultrasonic dispersing the emulsion, and then performing magnetic stirring to obtain a Pickering emulsion; adding hydrogen peroxide and horseradish peroxidase solution into the Pickering emulsion, and stirring and reacting; and performing freeze-drying on the emulsion after the reaction is completed to obtain cellulose nanocrystal microcapsules. The application uses an enzyme catalysis method to prepare microcapsules with an anticorrosive function, and the synthesized microcapsules do not contain harmful substances such as formaldehyde and are environmentally friendly. The synthesized microcapsules have good stability, can be easily dispersed in an aqueous solution, can be used as a carrier of healing reagents for water-based anticorrosive coatings, and have a simple preparation method, controllable size and suitability for large-scale production.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY

Kit and detection method for detecting vomitoxin

The present invention belongs to the technical field of mycotoxin detection, and particularly relates to a kit and a detection method for detecting vomitoxin. The kit includes an antigen, a primary antibody, an enzyme-labeled secondary antibody, a chromogenic regulator, a phosphate buffer solution, and a detection reagent; the antigen is bovine serum albumin conjugated with vomitoxin; the primary antibody is a monoclonal antibody against vomitoxin; the enzyme-labeled secondary antibody is a goat anti-mouse IgG secondary antibody labeled with horseradish peroxidase; the chromogenic regulator is ethylenediaminetetraacetic acid or its sodium salt, or vitamin C; the detection reagent includes a TMB chromogenic solution. The present invention uses ethylenediaminetetraacetic acid or its sodium salt as a chromogenic regulator to change the chemical microenvironment around the chromogenic substance, enhance the optical properties of the chromogenic substance, and thereby reduce IC 50 , and improve the detection sensitivity.
Owner:QIQIHAR UNIVERSITY

A water-soluble myricetin derivative and its preparation method and application

The present invention relates to the field of biomedicine technology, and discloses a preparation method and application of a water-soluble myricetin derivative. The present invention uses horseradish peroxidase oxidation combined with extraction and purification to prepare a water-soluble myricetin derivative for the first time. The derivative has good water solubility and anti-protein amyloid fibrosis activity. Compared with myricetin, it has a stronger inhibitory effect on lysozyme and bovine insulin amyloid fibrosis, and can more effectively prevent Aβ than myricetin. 1‑42 Aggregation and accumulation have an important impact on the neurotoxicity caused by GMC101. It can be used as a functional factor in anti-protein amyloid fibrillation functional foods, which has important practical significance and commercial value.
Owner:SHANXI UNIV