Results 221 to 230 of about 574,168 (266)

Effect of Kepone on estuarine microbial activity

Microbial Ecology, 1980
In situ heterotrophic uptake of mixed(14)C-amino acids and direct viable cell (DVC) count of Chesapeake Bay water samples were not significantly affected by the insecticide Kepone at concentrations [Symbol: see text]0.01 mg/1. Maximum inhibition of heterotrophic uptake,ca. 85-90%, and DVC count, 45-97%, was evident at concentrations of Kepone exceeding
S A, Orndorff, R R, Colwell
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Effect of chlorpyrifos on soil microbial activity

Environmental Toxicology and Chemistry, 1995
AbstractA study of the effects of the insecticide chlorpyrifos on soil microbial activity was made. Parameters included total bacterial populations, fungi, aerobic N2-fixing bacteria, denitrifying bacteria, nitrifying bacteria, nitrogenase activity, acid and alkaline phosphatases, arylsulfatase, and dehydrogenase.
C. Pozo, M.V. Martinez-Toledo, V. Salmeron, B. Rodelas, J. Gonzalez-Lopez   +4 more
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Activation of latent collagenase by microbial plaque

Journal of Periodontal Research, 1974
Sterile extracts of whole human microbial plaque released substantial latent collagenolytic activity in gingival collagenase preparations, homogenates of polymorphonuclear leukocytes, and tissue macrophages. The plaque activation factor was thermolabile, nondialyzable, and had essentially no inherent collagenolytic activity.
P B, Robertson, C M, Cobb, R E, Taylor, H M, Fullmer   +3 more
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EFFECTS OF MICROBIAL ACTIVITY ON AQUATIC POLLUTANTS*

Annals of the New York Academy of Sciences, 1977
Bacteria and fungi present in estuarine and marine water and sediment accomplish significant degradation of crude oil, refined oils, polychlorinated biphenyls, and organomercurials, with the rate and extent of degradation varying with species, geographic source, temperature, and other biologic and environmental parameters.
M J, Voll, J, Isbister, L, Isaki, M, McCommas, R R, Colwell   +4 more
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Microbial Activity in Activated Carbon Filters

Journal of the Environmental Engineering Division, 1982
To obtain information on the adsorption, bacteriological oxidation and desorption processes in filters, the oxygen consumption (Δ\NO\d2) and the removal of organic carbon (Δ\NTOC) as well as their relation to one another (Δ\NC/Δ\NO\d2) were studied.
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Harnessing microbial activities for environmental cleanup

Current Opinion in Biotechnology, 2006
Human activities have released large amounts of toxic organic and inorganic chemicals into the environment. Toxic waste streams threaten dwindling drinking water supplies and impact terrestrial, estuarine and marine ecosystems. Cleanup is technically challenging and the costs based on traditional technologies are exceeding the economic capabilities of ...
Frank E, Löffler, Elizabeth A, Edwards
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Microbial production of sensory-active miraculin

Biochemical and Biophysical Research Communications, 2007
Miraculin (MCL), a tropical fruit protein, is unique in that it has taste-modifying activity to convert sourness to sweetness, though flat in taste at neutral pH. To obtain a sufficient amount of MCL to examine the mechanism involved in this sensory event at the molecular level, we transformed Aspergillus oryzae by introducing the MCL gene ...
Keisuke, Ito, Tomiko, Asakura, Yuji, Morita, Ken-ichiro, Nakajima, Ayako, Koizumi, Akiko, Shimizu-Ibuka, Katsuyoshi, Masuda, Masaji, Ishiguro, Tohru, Terada, Jun-ichi, Maruyama, Katsuhiko, Kitamoto, Takumi, Misaka, Keiko, Abe   +12 more
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Tailoring Activity and Selectivity of Microbial Transglutaminase

2019
Microbial transglutaminase (mTG), a protein-glutamine γ-glutamyltransferase from Streptomyces mobaraensis, is an enzyme capable of forming isopeptide bonds between the nearly inert (from the chemical point of view) γ-carboxamides present in the side chain of glutamine residues and primary amines.
Lukas, Deweid, Olga, Avrutina, Harald, Kolmar   +2 more
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Microbial Society and its Activity in the Soil

Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite Naturwissenschaftliche Abteilung: Allgemeine, Landwirtschaftliche und Technische Mikrobiologie, 1977
In this study, with the help of the buried slide method, a qualitative observation of the microsociological association in the soil was assessed. Fungal mycelium cohabiting with bacterial forms, rods as well as cocci, individual colonies of Azotobacter-type cells, and certain algae of Hantzschia species were recorded in a central European typical ...
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Microbial Activity in the Rhizoshere

2006
Rhizosphere Biology - an Overview.- Methods and Techniques for Isolation, Enumeration and Characterization of Rhizosphere Microorganisms.- Root Exudates as Determinant of Rhizospheric Microbial Biodiversity.- Rhizosphere Microbial Community Dynamics.- The Role of Rhizotrons and Minirhizotrons in Evaluating the Dynamics of Rhizoplane-Rhizosphere ...
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