13 results about "Heterocyclic amine" patented technology

This invention provides a method for simultaneously detecting 17 heat-processing hazards in 4 categories, comprising: adding n-hexane to the sample, mixing thoroughly, discarding the n-hexane phase, extracting acrylamide, 5-hydroxymethylfurfural, and free heterocyclic amines using dimethyl ketone and ultrasound-assisted extraction, collecting the supernatant, and purifying it; simultaneously transferring the precipitate to another tube, reducing it with sodium tetrahydroborate, hydrolyzing it with hydrochloric acid to release bound heterocyclic amines and late-stage glycosylation products, and performing UPLC-MS / MS analysis. This invention is the first to propose a two-step extraction method for simultaneously determining 17 heat-processing hazards in 4 categories within 7 minutes using UPLC-MS / MS. The accuracy, precision, detection limit, quantitation limit, and recovery rate of the method were verified, and all test indicators met the requirements. This method is applicable to the determination of heat-processing hazards in four types of food matrices: high starch, high protein, high fat, and high sugar.

The application discloses a processing method for reducing heterocyclic amines in barbecue meat while maintaining characteristic flavor, and belongs to the technical field of food processing. The application solves the technical problems of high heterocyclic amine generation in the high-temperature roasting process of the existing barbecue method and insufficient flavor caused by simply reducing the temperature. The method comprises the following steps: soaking fresh meat pieces in a phosphate buffer solution containing glucose oxidase and catalase for low-temperature treatment after the fresh meat is cut into pieces; preparing a flavor precursor coating liquid composed of xylose, cysteine, glycine, peanut oil and water and performing high-speed shear emulsification treatment; immersing the drained meat pieces in the coating liquid to make the surface uniformly adhere; and then placing the coated meat pieces in a far-infrared oven for roasting while inserting a probe type thermometer to monitor the center temperature. The application is mainly used in the field of barbecue meat processing and can effectively reduce the generation of heterocyclic amines while effectively maintaining the characteristic flavor of the roasted meat.

The present invention relates to a novel heterocyclic amine derivative represented by the following chemical formula 1 and a pharmaceutical composition containing the same, wherein the compounds according to the present invention can be usefully used for the prevention or treatment of inflammatory diseases, autoimmune diseases, or cancer. [Case 1] In the above chemical formula 1, the descriptions of Y1, R1, A, R2, k, Y2, L, X, and R3 are as defined in the specification.

This invention discloses a method for preparing a nitrogen-containing heterocyclic D-A type COF photocatalyst and its application. The specific steps are as follows: Step S1, an aldehyde ligand and an amino ligand are added to a Pyrex reaction tube at a molar ratio of 2:3. The aldehyde ligand is a trialdehyde pyrogallol, and the amino ligand is an aromatic amine compound containing a nitrogen-containing heterocyclic ring. Step S2, a mixed organic solvent composed of mesitylene and 1,4-dioxane is added to the Pyrex reaction tube from Step S1, and an aqueous acetic acid solution is added as a catalyst to obtain mixture a. Step S3, the Pyrex reaction tube containing mixture a from Step S2 is ultrasonically treated to form a uniform suspension. This invention relates to the field of functional materials and photocatalysis technology. The structure is precisely designed, and the nitrogen-containing heterocyclic ring significantly modulates the D-A effect. In this invention, the 1,3,5-trihydroxypyrogallol and the nitrogen-containing heterocyclic amine ligand are covalently linked to form a donor-acceptor (D-A) structure with a significant electron push-pull effect within a covalent organic framework.

The present invention provides an acidic gas absorbent that absorbs a large amount of carbon dioxide, efficiently separates and recovers it, and has low emission compared to other amines, as well as an acidic gas removal device and acidic gas removal method using the same. [Solution] The acidic gas absorbent of the embodiment comprises a heterocyclic amine compound represented by the following formula (1) and a low molecular weight polyol compound. JPEG2026084925000006.jpg2787 [In the formula, R 1 Each of these independently represents a hydrogen atom, a hydroxyl group, and a hydroxyalkyl group or aminoalkyl group having 1 to 6 carbon atoms, R 2 R represents a hydroxyalkyl group or aminoalkyl group having 2 to 6 carbon atoms. 1 and R 2 At least one of them contains a hydroxyalkyl group or an aminoalkyl group.

The present invention provides: aggregated particles which exhibit high dispersibility not only under acidic conditions of pH 2 or higher but lower than pH 7 but also under alkaline conditions of pH 7 to pH 9 inclusive; an aggregated particle dispersion liquid; a coating material containing the particles; methods for producing the aggregated particles, the dispersion liquid, and the coating material; and a method for forming an antiviral surface.　The present invention specifically provides: aggregated particles in which silica nanoparticles each having an amino group on the surface thereof or silica nanoparticles each containing an aluminum compound and ceria nanoparticles having a boron compound, a heterocyclic amine, nitric acid, acetic acid, or phthalic acid adsorbed on the surfaces thereof are aggregated; an aggregated particle dispersion liquid; a coating material containing the particles; methods for producing the aggregated particles, the dispersion liquid, and the coating material; and a method for forming an antiviral surface.

This invention discloses a series of isoflavulol amine copolymers, their preparation methods, and their antibacterial applications. This series of compounds uses fulvulin as the parent compound, converting fulvulin into isoflavulin. Then, isoflavulin, as the lipophilic moiety, is linked to various aliphatic amines and heterocyclic amines via alkyl linkages of different lengths, synthesizing a series of isoflavulol amine copolymers. Further structural optimization can be performed by introducing methyl groups at the nitrogen atom site to form nitrogen cations. The isoflavulol amine copolymers prepared by this invention exhibit good antibacterial effects against Staphylococcus aureus ATCC 29213 and various methicillin-resistant Staphylococcus aureus (MRSA), and possess advantages such as good water solubility, low biotoxicity, and high yield, showing promise for further development into semi-synthetic antibacterial drugs for clinical use.

This invention relates to the field of high-performance epoxy resins, providing an epoxy resin and its preparation method that combine good storage stability, rapid curing, and high mechanical properties. The system uses a nitrogen-containing heterocyclic amine compound as a curing agent. At room temperature, the nitrogen atoms in the heterocycle inhibit the reactivity of the amino groups by forming hydrogen bonds, thus imparting good storage stability to the system. Under intermediate temperature conditions, the hydrogen bonds are broken, and the highly reactive amino groups rapidly initiate ring-opening reactions of the epoxy groups, achieving efficient curing in a short time, significantly improving processing efficiency and reducing energy consumption. After curing, strong hydrogen bond interactions form in the resin network, increasing network density and giving the material excellent mechanical properties and a high glass transition temperature. This invention effectively solves the problem of balancing mechanical properties and storage stability in single-component, rapid-curing epoxy resin systems, providing a new approach for developing epoxy resin materials with long latency, intermediate-temperature rapid curing, and high mechanical properties.

This technology provides a way to efficiently decompose polyurethane foam. [Solution] A method for producing a decomposition composition obtained by reacting polyurethane foam with a composition containing compound A and compound B, wherein compound A is a polyhydric alcohol, compound B is a metal carboxylate salt or a heterocyclic amine compound, and the amount of compound A added is greater than 100 parts by mass per 100 parts by mass of polyurethane foam.

A resist composition comprising a quencher and an acid generator is provided. The quencher is a compound having a nitro-substituted aromatic moiety-containing acid labile group and a heterocyclic amine structure in its molecule. The resist composition has a high sensitivity and forms a pattern with improved LWR or CDU, independent of whether it is of positive or negative tone.

The application provides a kind of for hot processing meat product and its preparation method of inhibiting harm low sodium flavor salt, belong to food processing technical field. The application mixes edible salt, flavor enhancer (including inosinic acid and guanylic acid) and water, obtains mixed solution;The mixed solution is carried out spray drying, and the obtained granular material is annealed, to obtain flavor-enhanced salt compound. The flavor-enhanced salt compound of the application can effectively release components with hydroxyl radical scavenging activity during cooking, and improve local moisture distribution through its unique hygroscopicity, thereby significantly inhibiting the generation of heterocyclic amines, advanced glycation end products and dihydroxyphenylalanine. At the same time, the flavor-enhanced salt compound has fast ion release kinetics and flavor synergy effect, so that the salty taste perception and overall sensory acceptability of roast beef patties are maintained or even improved under the condition of reducing sodium salt addition to 22%.

An aspect of the present disclosure relates to a dispersant composition for an electrode of a power storage device. The dispersant composition contains an acrylic polymer (A), an amine compound (B) with a boiling point of 200° C. or less, and an organic solvent (C). The acrylic polymer (A) contains a constitutional unit a represented by the following formula (1). The compound (B) is at least one amine compound selected from the group consisting of a secondary aliphatic amine, a tertiary aliphatic amine, an aromatic amine, and a heterocyclic amine.

This invention provides a heterocyclic amine catalyst ligand and a method for preparing high-carbon α-olefins using it. The heterocyclic amine catalyst ligand is used for the catalytic synthesis of high-carbon α-olefins with more than C8 atoms. The structural formula of the catalyst ligand is as follows: where R is an aromatic group or alkyl group, and R1 is hydrogen or methyl. In this scheme, when the catalyst ligand with the above structure is mixed with a chromium source and a co-catalyst and introduced into an ethylene reaction system for in-situ polymerization, the presence of four nitrogen atoms in the ligand structure allows for easier coordination with transition metals, resulting in a rapid reaction. This allows the ligand structure to directly achieve in-situ polymerization of olefins without the need for a synthetic catalyst. Simultaneously, the R group (phenyl or alkyl) in the ligand structure increases the steric hindrance of the ligand, limiting the approach angle and direction of reactant molecules, thus facilitating the selective generation of high-carbon α-olefins with more than C8 atoms.