Results 271 to 280 of about 264,167 (309)

Nitrogen metabolism by the microbial flora of the rabbit caecum

Journal of Applied Bacteriology, 1985
The dense microbial flora of the rabbit caecum consisted chiefly of bacteria (10 11 /g) with small numbers of yeast cells (10 6 /g). Using strictly anaerobic techniques, 23% of the direct microscopic cell count was cultivated and 55% of the cultivatable
S J, Forsythe, D S, Parker
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Soil microbial activities and carbon and nitrogen fixation

Research in Microbiology, 2003
Soil microbial activity that reflects microbiological processes of soil microorganisms is the potential indicator of soil quality, as plants rely on soil microorganisms to mineralize organic nutrients for growth and development. Soil microorganisms also process plant litter and residues into soil organic matter, a direct and stable reservoir of carbon ...
Gang, Chen, Honglong, Zhu, Yong, Zhang
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Microbial Transformation of Nitrogenous Compounds

2007
Alkaloids are very much important molecules, not only for chemical reasons but also because of theirdiverse biological activities. Up to now several reviews have been published explaining the use of biotransformationor microbial transformation techniques to modify alkaloids, which added several advantages over the classicalchemical transformation ...
Mahmud Tareq Hassan Khan, Arjumand Ather
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Novel principles in the microbial conversion of nitrogen compounds

Antonie van Leeuwenhoek, 1997
Some aspects of inorganic nitrogen conversion by microorganisms like N2O emission and hydroxylamine metabolism studied by Beijerinck and Kluyver, founders of the Delft School of Microbiology, are still actual today. In the Kluyver Laboratory for Biotechnology, microbial conversion of nitrogen compounds is still a central research theme. In recent years
Jetten, M.S.M. (author), Logemann, S. (author), Muyzer, G. (author), Robertson, L.A. (author), De Vries, S. (author), Van Loosdrecht, M.C.M. (author), Kuenen, J.G. (author)   +6 more
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Microbial fixation of nitrogen in the presence of lanthanum sulphate

Zeitschrift für allgemeine Mikrobiologie, 1981
Abstract The effect of lanthanum sulphate on five Azotobacter strains (4A 7 , 10, 5A 2 , 5A 1 , and 3A 3 ) isolated
S, Ranganayaki, K, Bahadur, C, Mohan
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Effect of sodium molybdate on microbial fixation of nitrogen

Zeitschrift für allgemeine Mikrobiologie, 1981
Abstract The effect of 0, 100, 200, 300, 400, and 500 μM concentrations of sodium molybdate in the culture media of the five Azotobacter species isolated from Allahabad soil was studied.
S, Ranganayaki, C, Mohan
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Microbial nitrogen cycles: physiology, genomics and applications

Current Opinion in Microbiology, 2001
Genes and pathways involved in inorganic nitrogen cycles have been found in traditional as well as unusual microorganisms. These pathways or enzymes play a very important role in the adaptation or survival of these microorganisms under a variety of environmental conditions.
R W, Ye, S M, Thomas
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Microbial degradation of sulfur, nitrogen and oxygen heterocycles

Trends in Microbiology, 2006
Sulfur (S), nitrogen (N) and oxygen (O) heterocycles are among the most potent environmental pollutants. Microbial degradation of these pollutants is attracting more and more attention because such bioprocesses are environmentally friendly. The biotechnological potential of these processes is being investigated, for example, to achieve better sulfur ...
Ping, Xu, Bo, Yu, Fu Li, Li, Xiao Feng, Cai, Cui Qing, Ma   +4 more
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Controlling environmental nitrogen through microbial metabolism

Trends in Biotechnology, 1993
The major sources of environmental nitrogen are the result of process intensification by human activities such as the chemical synthesis of nitrogenous fertilizers, internal-combustion engines, intensive farming and the use of xenobiotic chemicals in industrial processes.
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Microbial metabolites containing nitrogen

1981
There is a wide variety of metabolites containing nitrogen, which is produced by micro-organisms. The nitrogen atom (or atoms) most frequently is derived ultimately from an α-amino acid which also provides at least part of the carbon skeleton. Modifications to cyclic dipeptides are commonly encountered as secondary metabolites (Sections 7.3 and 7.4 ...
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