Nitrate is generally considered a water pollutant and an undesirable fertilizer residue in the food chain. Research in the 1970s indicated that, by reducing nitrate to nitrite, commensal bacteria might be involved in the pathogenesis of gastric cancers and other malignancies, as nitrite can enhance ...
A. (1988). Nitrate- and nitrite-reducing bacteria in the achlorhydric stomach. J. Med. Microbiol. 25, 2539-2259. doi: 10.1099/00222615-25-4-253Forsythe SJ, Dolby JM, Webster AD, Cole JA. Nitrate- and nitrite-reducing bacteria in the achlorhydric stomach. J Med Microbiol 1988; 25: ...
soil BACTERIA, such as Nitrobacter, that can oxidize nitrite to nitrate. Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005 Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or visit the webmaster's ...
Related to nitrate poisoning: nitrite poisoningni·trate (nī′trāt′, -trĭt) n. 1. The univalent anionic group NO3, derived from nitric acid, or a compound containing this group. 2. Fertilizer consisting of sodium nitrate, potassium nitrate, or ammonium nitrate. tr.v. ni·trat·ed, ni...
Nitrite was only a minor end-product of nitrate reduction. As the nitrate concentration was increased the proportion of the nitrate which was denitrified to nitrous oxide increased, to 83% at the greatest nitrate concentration used (2 mM), while reduction to ammonium correspondingly decreased. ...
(8) Nitric oxide, formed by nitrite, has been shown to have vasodilator properties and may modulate platelet function in the human body, improving blood pressure and reducing heart attack risk. (9,10,11) Nitrates may also help boost the immune system and protect against pathogenic bacteria (...
Approximately 25% of the circulating nitrates are taken up by the salivary glands where they are converted to nitrite bynitrate reductasesreleased from symbiotic bacteria in the oral cavity. Nitrate-rich fruit and vegetable supplement reduces blood pressure in normotensive healthy young males without si...
Nitrite and nitrate could have a role by producing NO, because nitrite can release NO after reaction with deoxyhemoglobin and dietary nitrate can be reduced substantially to nitrite by commensal bacteria in the oral cavity. Different methods have been applied for nitrite/nitrate detection, with the...
to nitrite by oral bacteria. Those amounts far exceed the usual intake from processed meats. Epidemiological studies do not provide sufficient evidence of cancer risk from consumption of either nitrate or nitrite from any sources. As of this writing, there is insufficient evidence to infer ...
The taxis response of Rhodobacter sphaeroides 2.4.1 and 2.4.3, Rhodopseudomonas palustris, and Agrobacterium tumefaciens to nitrate and nitrite was evaluated by observing the macroscopic behavior of cells suspended in soft agar and incubated under various conditions. R. sphaeroides 2.4.3, which is cap...