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30 results about "Fructosamine" patented technology

Fructosamines are compounds that result from glycation reactions between a sugar (such as fructose or glucose) and a primary amine, followed by isomerization via the Amadori rearrangement. Biologically, fructosamines are recognized by fructosamine-3-kinase, which may trigger the degradation of advanced glycation end-products (though the true clinical significance of this pathway is unclear). Fructosamine can also refer to the specific compound 1-amino-1-deoxy-D-fructose (isoglucosamine), first synthesized by Nobel laureate Hermann Emil Fischer in 1886.

Fructosamine determination kit

The invention discloses a fructosamine determination kit. The kit comprises a reagent R1 and a reagent R2, wherein the pH value of the reagent R1 is 10.0-10.8, and the reagent R1 comprises 200-500mmol / L of an alkaline buffer solution, 1-10g / L of a metal salt, 0.5-2g / L of a mixture of Emulgen A90 and Emulgen B66 with the same volume ratio, and 0.5-2g / L of a preservative; and the pH value of the reagent R2 is 4.0-5.0, and the reagent R2 comprises 5-25mmol / L of an acidic buffer solution, 0.5-2g / L of isopropylamine alkylbenzene sulfonate, 1-5g / L of NBT and 0.5-2g / L of a preservative. According tothe invention, the mixture of Emulgen A90 and Emulgen B66 with the same volume ratio is specially selected from the reagent R1 and is matched with a strong alkaline environment, so that interferents in a serum sample are effectively removed; in addition, an acid environment and isopropylamine alkylbenzene sulfonate are matched for use in the reagent R2, the concentration of the buffer solution isproperly reduced to enhance the solubility of NBT and the stability of the reagent, and meanwhile, the precision and linear range of the reagent are improved, so that the fructosamine determination kit with remarkably enhanced anti-interference capability and stability and more excellent reagent linearity and precision is obtained.
Owner:WUHAN LIFE ORIGIN BIOTECH LTD

Synthesis method of 2-C-methyl-D-ribonic acid-1,4-lactone

The invention discloses a synthesis method of 2-C-methyl-D-ribonic acid-1,4-lactone. The synthesis method comprises the following specific steps: step 1, isomerizing glucose in ethanol under an acidic condition to form fructose, and then enabling the fructose and N-methylbenzylamine to form fructosamine; step 2, crystallizing and purifying the fructosamine formed by the step 1 to obtain a solid; and step 3, enabling the fructosamine obtained by the step 2 to react under an alkaline condition, so as to obtain the 2-C-methyl-D-ribonic acid-1,4-lactone. According to the synthesis method disclosed by the invention, glucose is used as a raw material, so that the cost of the raw material is low; after the reaction is finished, an intermediate of the step 1 can be separated out through a crystallization manner, and a lot of uncertain impurities, generated in a glucose isomerization process, are removed, so that uncertain factors of the next step of reaction are greatly reduced; the method is simple in preparation process; conventional reaction reagents are adopted, so that the sources of the reagents are wide; and the reaction time is short, and the yield of products is high, so that the synthesis method is suitable for large-scale industrial production.
Owner:上海微巨实业有限公司

Multi-item detection all-in-one machine

The invention discloses a multi-item detection all-in-one machine which comprises an electrochemical detection mechanism, a high-pressure liquid chromatography mechanism and a sample adding mechanism, the electrochemical detection mechanism is used for detecting the content of blood glucose and fructosamine, and the high-pressure liquid chromatography mechanism is used for detecting the content of glycosylated hemoglobin; the sample adding mechanism is connected with the high-pressure liquid chromatography mechanism, and the sample adding mechanism is used for conveying a sample solution to the high-pressure liquid chromatography mechanism and dripping the sample solution into the electrochemical detection mechanism. According to the multi-item detection all-in-one machine, the electrochemical detection mechanism and the high-pressure liquid chromatography mechanism are integrated together, so that the multi-item detection all-in-one machine can detect blood sugar, fructosamine and glycosylated hemoglobin at the same time, the situation that three detection items need to be carried out on three different instrument platforms is avoided, the detection efficiency is improved, and the detection cost is reduced. And meanwhile, repeated blood drawing operation on the patient when different items are detected is also avoided.
Owner:嘉兴市唯真生物科技有限公司

Biomarkers for predicting degree of weight loss

A method for predicting the degree of weight loss attainable by applying one or more dietary interventions to a subject, said method comprising determining the level of one or more biomarkers in one or more samples obtained from the subject, wherein the biomarkers are selected from fructosamine and factor VII.
Owner:NESTEC SA

Fructosamine desaccharase carrier, transgenic cell line and genetically engineered bacterium for expressing fructosamine desaccharase, and application of fructosamine desaccharase

The invention relates to a fructosamine decarboxylase carrier, a transgenic cell line and a genetically engineered bacterium for expressing fructosamine decarboxylase and application of fructosamine desaccharase, and belongs to the technical field of biological enzyme method production. The invention provides a method for catalyzing transfer of an amino group from an amino donor compound to an amino receptor compound, which comprises the following steps of: utilizing an enzyme (fructosamine desaccharase), or an expression vector or a cloning vector for expressing the enzyme, or a transgenic cell line for expressing the enzyme, or a genetically engineered bacterium for expressing the enzyme; and the catalytic amino group is transferred from the amino donor compound to the amino acceptor compound. The method provided by the invention has the advantages of sufficient substrate source, no limitation of raw materials, mild preparation conditions, small environmental pollution, high reaction specificity, few impurities in the system, easiness in downstream separation and purification, and low production cost.
Owner:WUHAN BAIANHUIJI BIOTECHNOLOGY CO LTD

New anti-saccharification application of litsea coreana and anti-saccharification product and preparation method of anti-saccharification product

ActiveCN113813204AHigh cross-linking inhibitionHigh inhibition rateCosmetic preparationsToilet preparationsBiotechnologyProtein Carbonylation
The invention relates to a new anti-saccharification application of litsea coreana, an anti-saccharification product and a preparation method of the anti-saccharification product, and belongs to the technical field of plant extraction. On one hand, the invention provides the new anti-saccharification application of the litsea coreana. On the other hand, the invention provides the anti-saccharification product which is characterized by comprising an anti-saccharification active component; the action target of the anti-saccharification active component is selected from a group consisting of fructosamine, a protein carbonylation reaction pathway, AGEs, and a reaction pathway for crosslinking of a non-enzymatic glycosylation reaction intermediate product and protein; and the anti-saccharification active component comprises a litsea coreana extract. The third aspect of the invention provides a preparation method of the anti-saccharification product, which is characterized in that the litsea coreana extract is used as the anti-saccharification active component of the anti-saccharification product. Experiments prove that the litsea coreana extract has more excellent effects on inhibition of fructosamine, protein carbonylation and protein crosslinking than positive control aminoguanidine.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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