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EFSA Journal, Volume 24, Issue 7, July 2026.Abstract The Qualified Presumption of Safety (QPS) process was developed to provide a harmonised safety assessment approach to support EFSA Scientific Panels and Units. The QPS approach assesses the taxonomic identity, body of knowledge and safety of microorganisms intentionally added to the food and feed chain.
EFSA Panel on Biological Hazards (BIOHAZ) +26 more
wiley +1 more source
Simulation of partial anaerobiosis in a model soil in respect to denitrification
, 1979 Leffelaar, P.A.
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Sulfur-based denitrification: Effect of biofilm development on denitrification fluxes
Water Research, 2016Elemental sulfur (S(o)) can serve as an electron donor for denitrification. However, the mechanisms and rates of S(o)-based denitrification, which depend on a biofilm development on a solid S(o) surface, are not well understood. We used completely-mixed reactors packed with S(o) chips to systematically explore the behavior of S(o)-based denitrification
Yue Wang +2 more
exaly +3 more sources
The bioenergetics of denitrification
Antonie van Leeuwenhoek, 1983In anaerobically grown Paracoccus denitrificans the dissimilatory nitrate reductase is linked to the respiratory chain at the level of cytochromes b. Electron transport to nitrite and nitrous oxide involves c-type cytochromes. During electron transport from NADH to nitrate one phosphorylation site is passed, whereas two sites are passed during electron
Stouthamer, A.H. +2 more
openaire +3 more sources
Structural basis of denitrification
Biological Chemistry, 2004Denitrification represents an important part of the biogeochemical cycle of the essential element nitrogen. It constitutes the predominant pathway of the reductive dissimilation of nitrate in the environment. Via four enzymatic reactions, nitrate is transformed stepwise to nitrite (NO2-), nitric oxide (NO), and nitrous oxide (N2O), to finally yield ...
Einsle, Oliver, Kroneck, Peter M. H.
openaire +3 more sources
1999
Abstract Denitrification is the reduction of the nitrogen oxides, nitrate (NO3-) and nitrite (NO2-), to the gases nitric oxide (NO), nitrous oxide (NzO), and dinitrogen (N2). The process is carried out mainly by facultative anaerobes, i.e., organisms that normally use oxygen (02) to accept electrons during respiration but in its absence ...
Groffmann, P. +4 more
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Abstract Denitrification is the reduction of the nitrogen oxides, nitrate (NO3-) and nitrite (NO2-), to the gases nitric oxide (NO), nitrous oxide (NzO), and dinitrogen (N2). The process is carried out mainly by facultative anaerobes, i.e., organisms that normally use oxygen (02) to accept electrons during respiration but in its absence ...
Groffmann, P. +4 more
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Denitrification capacity and denitrification potential of subsurface soils
Communications in Soil Science and Plant Analysis, 1992Abstract Although numerous studies of denitrification in surface soils have been reported, few attempts have been made to study denitrifying activity in subsurface soils. We collected samples of four Iowa soil profiles to a depth of 3 m and measured their population of denitrifying bacteria and their capacity and potential for denitrification.
J. C. Yeomans +2 more
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Metalloenzymes of the denitrification pathway
Journal of Inorganic Biochemistry, 2006Denitrification, or dissimilative nitrate reduction, is an anaerobic process used by some bacteria for energy generation. This process is important in many aspects, but its environmental implications have been given particular relevance. Nitrate accumulation and release of nitrous oxide in the atmosphere due to excess use of fertilizers in agriculture ...
P, Tavares +3 more
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