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The glucose oxidase enzyme (GOx or GOD) also known as notatin (EC number 1.1.3.4) is an oxidoreductase that catalyses the oxidation of glucose to hydrogen peroxide and D-glucono-δ-lactone. This enzyme is produced by certain species of fungi and insects and displays antibacterial activity when oxygen and glucose are present.
The quinone is red-violet in colour, [3] [5] with the intensity of the colour being in proportion to the glucose concentration. [3] The colour is measured at 505 nm, [2] 510 nm, [4] or 540 nm. [3] Diagnostic kits containing the Trinder reagent are available, including one from Sigma-Aldrich. [2]
A colorless solid, it is an oxidized derivative of glucose. It is typically produced by the aerobic oxidation of glucose in the presence of the enzyme glucose oxidase. The conversion cogenerates hydrogen peroxide, which is often the key product of the enzyme: C 6 H 12 O 6 + O 2 → C 6 H 10 O 6 + H 2 O 2
If the medium in the anaerobic tube turns yellow, then the bacteria are fermenting glucose. If the tube with oil doesn't turn yellow, but the open tube does turn yellow, then the bacterium is oxidizing glucose. If the tube with mineral oil doesn't change, and the open tube turns blue, then the organism neither ferments, nor oxidizes glucose.
In enzymology, a glucose-fructose oxidoreductase (EC 1.1.99.28) is an enzyme that catalyzes the chemical reaction. D-glucose + D-fructose D-gluconolactone + D-glucitol. Thus, the two substrates of this enzyme are D-glucose and D-fructose, whereas its two products are D-gluconolactone and D-glucitol.
In the first line it claims that "So far all glucose meters have in some way employed the oxidation of glucose to gluconolactone catalyzed by glucose oxidase" - this is essentially not true - the largest selling meters in the USA, the Roche Accuchek, use an alternative to glucose oxidase called glucose dehydrogenase.
The extreme discrepancy of the catalytic efficiencies of P. chrysosporium CDH for cellobiose over glucose (87500 : 1) is being connected to the physiological role of the white-rot basidiomycete enzyme. [18] In ascomycete CDHs the discrimination of glucose is less strict [19] and a wider spectrum of mono- and oligosaccharides are converted. Of ...
Richardson was the last surviving founder of Delta Sigma Theta when she passed in 1993 at the age of 100, a centenarian. [8] A biography of her life was written by her sorority sisters in 1995 titled A Life of Quiet Dignity: Naomi Sewell Richardson. [9] The Naomi Sewell Richardson Park was built on the site of her original home in 2019. [9]