Results 11 to 20 of about 1,043 (212)
Iraqi Journal of Pharmaceutical Sciences, 2017 Free radical formation in heme proteins is recognized as a factor in mediating the toxicity of many chemicals. The present study was designed to evaluate the dose-response relationship of the free radical scavenging properties of pentoxifylline in ...
Tavga A. Aziz
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Foods, 2021 The effect of nitrate/nitrite (0, 37.5, 75, and 150 mg/kg) in the dry-cured loin formulation on the formation of lipid and protein oxidation products during in vitro digestion was evaluated.
Guadalupe Lavado +3 more
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Comparison of Oxidation Kinetics of Nitrite-Oxidizing Bacteria: Nitrite Availability as a Key Factor in Niche Differentiation [PDF]
Applied and Environmental Microbiology, 2015 ABSTRACT Nitrification has an immense impact on nitrogen cycling in natural ecosystems and in wastewater treatment plants. Mathematical models function as tools to capture the complexity of these biological systems, but kinetic parameters especially of nitrite-oxidizing bacteria (NOB) are lacking because of a limited number of ...
Nowka, Boris, Daims, Holger, Spieck, Eva
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Testing the influence of light on nitrite cycling in the eastern tropical North Pacific [PDF]
BiogeosciencesLight is considered a strong controlling factor of nitrification rates in the surface ocean. Previous work has shown that ammonia oxidation and nitrite oxidation may be inhibited by high light levels, yet active nitrification has been measured in the ...
N. M. Travis +5 more
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Frontiers in Microbiology, 2021 Nitrogen cycling microbes, including nitrite-oxidizing bacteria (NOB), perform critical ecosystem functions that help mitigate anthropogenic stresses and maintain ecosystem health.
Munira A. Lantz +5 more
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Journal of Japan Society on Water Environment, 2008 A factor that controls maximum cell-specific nitrite oxidation rate was examined using the enrichment culture of Nitrobacter. Increasing or decreasing nitrite loading changed the content of Q-10, which served as a hydrogen carrier in the electron transport chain of Nitrobacter, which varied the maximum cell-specific nitrite oxidation rate. That is, the
TSUJI, Koji +4 more
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Mechanism of Autocatalytic Oxidation of Oxyhemoglobin by Nitrite [PDF]
Environmental Health Perspectives, 1987 Oxidation of oxyhemoglobin by nitrite is characterized by the presence of a lag phase followed by autocatalysis. The stoichiometry of the overall reaction is described by the following equation: 4HbO2 + 4NO2- + 4H+ = 4Hb+ + 4NO3- + O2 + 2H2O (Hb denotes hemoglobin monomer).
H, Kosaka, I, Tyuma
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Water Research X, 2023 Simultaneous nitrification and denitrification (SND) is effective and energy-saving for wastewater treatment. As an inevitable intermediate product in the SND process, nitrite affects the efficiency of ammonia oxidation and the composition of nitrifiers.
Yu Xiang +6 more
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Applied Sciences, 2022 After the anaerobic digestion of livestock manure, high concentrations of nutrients still remain. Treatment of livestock wastewater through partial nitrification coupled with anaerobic ammonium oxidation (ANAMMOX) could be a useful technology depending ...
Mingchuan Zhang +4 more
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Metal Nitrite: A Powerful Oxidizing Reagent [PDF]
Journal of the American Chemical Society, 2011 An efficient and simple source of nitroso reagents and their oxidation reactions are described. The combination of a Lewis acid and a metal nitrite was applied to the oxidation of silyl enol ethers. Amino acid and peptide derivatives were easily accessed through in situ C-C bond cleavage of fully substituted silyl enol ethers upon oxidation.
Mahiuddin, Baidya, Hisashi, Yamamoto
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