Hydrogen peroxide generation

CH—NHOH) to oxime (C=NOH) and ultimately to the nitroalkane (CH—NO2). Hydrogen peroxide generates amine oxides from tertiary cycloaUphatic... 

Choi H.W. Kim Y.J. Lee S.C. Hong J.K. Hwang B.K. (2007) Hydrogen peroxide generation by the pepper extracellular peroxidase CaP02 activates local and systemic cell death and defense response to bacterial pathogens / / Plant Physiology. V. 145. P. 890-904. 

Fig. 23.2 Isolators used for sterility testing. The operator works within the hood which is suspended inside the cubicle the hydrogen peroxide generator which is used to sterilize the isolators is shown in the left foreground. (Courtesy of SmithKline Beecham Pharmaceuticals.)...

Of these steps, the last three can be discounted (10.6) on the grounds that there is no significant V(II) dependence, (10.7) is considered unimportant since Tl(II) is present only in minute concentrations, (10.8) is slow by comparison with the other steps in the set (k 0.13 1.mole . sec in 1 M HCIO4 at 0 °C). Both rate and stoichiometric data infer that the reaction between Tl(III) and V(n) occurs essentially by a two-electron oxidation (step (10.1)). In the presence of chloride, less V(IV) is produced. It is interesting to note that oxidation of V(II) by molecular oxygen or hydrogen peroxide generates V(IV). However, the oxidation of V(III) by Tl(III) does not occur as a two-electron step (see p. 231). 

Chung, L.Y., Schmidt, R.J., Andrews, A.M. and Turner, T.D. (1993). A study of hydrogen peroxide generation by, and antioxidant activity of, Granuflex (Duo Derm) hydrocolloid granules and some other hydrogel/hydrocolloid wound management materials. Br. J. Dermatol. 129, 145-153. 

Cyanide reduction with hydrogen peroxide is effective in reducing cyanide. It has been applied on a less frequent basis within this industry, due to the fact that there are high operating costs associated with hydrogen peroxide generation. The reduction of cyanide with peroxide occurs in two steps and yields C02 and ammonia ... 

Detection of Hydrogen Peroxide Generated in a Postcolumn Reactor... 

A fiberoptic biosensor has been used for the determination of xanthine and hypoxanthine by immobilization of xanthine oxidase and peroxidase on different preactivated membranes, which were mounted onto the tip of the fiberoptic bundle [47], The hydrogen peroxide generated was measured using the luminol reaction. A linear calibration curve of the sensors occurred in the range of 1-316 nM hypoxanthine and of 3.1-316 nM xanthine, respectively, with a detection limit of 0.55 nM. 

Enzymes with an intermittent role may be much more important than we thought in 1963. This was perhaps first clearly emphasized by Deis-seroth and Bounce in their catalase review of 1970 (25). These authors also pointed out the likelihood that the specific location of most eukaryotic catalase in the peroxisomes represents a functional response to the need to decompose hydrogen peroxide generated by the aerobic oxidases present in these same organelles, including hydroxy-acid oxidases and D-amino-acid oxidases. 

Enzymes functionalized with metallic NPs were used as biocatalytic hybrids for the growth of metallic nanowires. The catalytic enlargement of metal nanoparticles by products generated by different enzymes was used to develop different optical sensors that follow the activities of enzymes and analyze their substrates.57 For example, hydrogen peroxide generated by the biocatalyzed oxidation of glucose by O2 in the... 

Hanham, A.F., Dunn, B.P. Stich, H.F. (1983) Clastogenic activity of caffeic acid and its relationship to hydrogen peroxide generated during autooxidation. Mutat. Res., 116, 333-339... 

Potential in Analytical Chemistry. The method has already found applications in radiation chemistry. In addition to the oxygen analyses herein reported, hydrogen peroxide generated by intense 15 m.e.v. electron pulses has been measured from the decay of e aq by subsequent low intensity x-ray pulses. 

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