Results 21 to 30 of about 43,948 (300)

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
openaire   +2 more sources

Detection of nitrite by flow injection analysis using a novel paired emitter-detector diode (PEDD) as a photometric detector [PDF]

, 2007
An inexpensive flow injection analysis system for determining low concentration levels of nitrite employing the Griess reagent spectrophotometric method is reported.
O'Toole, Martina, O\u27Toole, Martina, Shepherd, Roderick, Lau, King-Tong, Diamond, Dermot   +4 more
core   +1 more source

Physiology of the Nitrite-Oxidizing Bacterium Candidatus Nitrotoga sp. CP45 Enriched From a Colorado River

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, Andrew M. Boddicker, Michael P. Kain, Owen M. C. Berg, Courtney D. Wham, Annika C. Mosier   +5 more
doaj   +1 more source

On the dynamics of nitrite, nitrate and other biomarkers of nitric oxide production in inflammatory bowel disease [PDF]

, 2010
Nitrite and nitrate are frequently used surrogate markers of nitric oxide (NO) production. Using rat models of acute and chronic DSS-induced colitis we examined the applicability of these and other NO-related metabolites, in tissues and blood, for the ...
Fumito Saijo, Bryan, Nathan S., Chris Andry, Andry, Chris, D. Neil Granger, Saijo, Fumito, Juan Rodriguez, Ivanovic, Marina, Rodriguez, Juan, Bauer, Selena M., Selena M. Bauer, Feelisch, Martin, Vowinkel, Thorsten, Thorsten Vowinkel, Martin Feelisch, Milsom, Alexandra B., Nathan S. Bryan, Alexandra B. Milsom, Granger, D. Neil, Marina Ivanovic   +19 more
core   +1 more source

Nitrite-Phenol-NO Crosstalk: Phenol Oxidation and NO Generation from Nitrite at Copper(II) Sites

, 2019
Nitrite is involved in a plethora of biological phenomena that includes tyrosine nitration associated with neurodegenerative disorders and gastric phenol metabolism.
Timothy H. Warren (6495743), Subrata Kundu (8102015), Jeffery A. Bertke (6495755), Zeinab Sakhaei (8102013)   +3 more
core   +2 more sources

Nitrite improved nitrification efficiency and enriched ammonia-oxidizing archaea and bacteria in the simultaneous nitrification and denitrification process

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, Tengzhi Zhou, Siping Deng, Zhiyu Shao, Yiwen Liu, Qiang He, Hongxiang Chai   +6 more
doaj   +1 more source

Evaluation of Non-Biodegradable Organic Matter and Microbial Community’s Effects on Achievement of Partial Nitrification Coupled with ANAMMOX for Treating Low-Carbon Livestock Wastewater

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, Xi Chen, Xinyang Xu, Zhongtian Fu, Xin Zhao   +4 more
doaj   +1 more source

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
openaire   +2 more sources

Effects of Different Concentrations of Melatonin on the Time-course of Nitrite–induced Oxidation of Hemoglobin: In vitro Study

Iraqi Journal of Pharmaceutical Sciences, 2017
Melatonin is a potent scavenger of reactive oxygen species or free radicals like superoxide and hydroxyl radicals. The oxidation of hemoglobin to methemoglobin (meth-Hb) by oxidizing compounds has been widely studied.
Saad A.Hussain, Shaima M. Mohammed, Intesar T. Numan, Ihab I. Abdulwahhab   +3 more
doaj   +3 more sources

Dissimilatory Nitrite and Nitric Oxide Reductases [PDF]

Chemical Reviews, 1996
The inorganic nitrogen cycle (Figure 1) consists of several linked biological processes and one abiological process, the reaction of N2 and O2 in lightning discharges and internal combustion engines to produce NOx and, ultimately, nitrate. All of the processes except nitrogen fixation involve reduction or oxidation of species containing N-O bonds of ...
openaire   +4 more sources