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Xanthine oxidase

Is a specific, generated by both catalytic hypoxanthine xanthine, and then generates uric acid, but also the direct catalytic xanthine generates uric acid enzyme EC1.2.3.2. A molybdenum, non-heme iron, inorganic sulfide, FAD, flavin-containing enzyme. Present in the milk, liver and kidneys of animals, especially birds, insects and bacteria. Molecular weight of 10 tens of thousands of -30 tens of thousands. Broader substrate specificity as electron donors in vitro, divided by the purine derivative can also pteridine derivative, aldehyde (to form a carboxylic acid) as an electron donor, generated on the surface hydroxy compound, an oxygen atom from the water. NADH oxidation. Electron acceptor, with molecular oxygen, nitrate, benzoquinone, nitro compounds, NAD, ferredoxin proteins, etc., but according to the source of the enzyme and different. Peroxide generated in the reaction, causing a chain reaction.

 

Glucose oxidase

Chinese alias gluconic oxidase; enzyme of oxidation grape; glucose oxidase GOD; glucose measurement kit (glucose oxidase)]; variant of Aspergillus niger, obtained from the glucose oxidase and catalase; β-D-glucose oxidoreductase EC 1.1.3.4; glucose oxidase (Aspergillus niger)
Name EC 1.1.3.4
English alias 1.1.3.4; BETA-D-GLUCOSE: OXYGEN-OXIDOREDUCTASE; BETA-D-GLUCOSE: the OXYGEN the 1-OXIDOREDUCTASE TYPE II; BETA-D-GLUCOSE: the OXYGEN the 1-OXIDOREDUCTASE TYPE II-S; BETA-D-GLUCOSE : OXYGEN 1-OXIDOREDUCTASE TYPE VII; BETA-D-GLUCOSE: OXYGEN 1-OXIDOREDUCTASE TYPE XS; GOD; GOD TYPE II

 

 

glucose oxidase is an aerobic dehydrogenase

The use of glucose oxidase, the oxygen can be removed from the food and in the container, thereby effectively preventing the deterioration of food, and therefore can be applied to the packaging of tea, ice cream, milk, beer, wine and other beverage products. Glucose oxidase is an enzyme found in specific Penicillium (Penicillium notatum) mold and honey. Which catalyzes O2D-gluconic acid, D-glucose (δ-lactone) H2O2 reaction. EC1.1.3.4. Specificity of Penicillium (P.notatum) of enzyme with its remarkable have antibacterial properties and the introduction of the note. Therefore, there are glucose oxidase (notatin) call is now clear, antibacterial properties is due to the reaction of H2O2 with sterilization effect. The purified material contains two molecules of FAD, as the electron acceptor, in addition to O2 outer and 2,6-dichlorophenol, indophenol reaction. The enzyme having a specificity for glucose. The Michaelis constant Km is low (10-3M degree), quantitatively generated by H2O2 as the D-glucose in quantitative reagent has been widely used in the field of biochemistry and clinical examination.

 

glucose oxidase in flour

Glucose oxidase in the presence of oxygen under the condition can glucose converted into gluconic acid, generating hydrogen peroxide. Hydrogen peroxide is a strong oxidizing agent, gluten molecules in the mercapto group (-SH) can be oxidized to a disulfide (-S-S-), thereby enhancing the strength of the gluten. Improve dough extensibility, increase the volume of bread, you can replace the potassium bromate KBrO4 carcinogenic effects on the human body. In noodle manufacturing, glucose oxidase would help the gluten is preferably formed between the protein network structure and increasing noodle bite.

 

Immune isotope probe

One-way or two-dimensional electrophoresis separation mixed antigens samples in the gel board, and then take the immobilization matrix membrane with gel paste. In the imprinted paper natural adsorption force, electric force, or other external force, so that in the gel were transferred to a single antigen group imprinted paper, and a solid phase. Finally, immunization coverage liquid technical immune isotope probes or immunoenzyme probe for detection and analysis of the the antigen immobilization matrix film.