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2 edition of influence of microbial activity on degradation of acetate and EDTA found in the catalog.

influence of microbial activity on degradation of acetate and EDTA

J. M. West

influence of microbial activity on degradation of acetate and EDTA

by J. M. West

  • 143 Want to read
  • 22 Currently reading

Published by Department of the Environment in [S.l.] .
Written in English


Edition Notes

StatementJ.M. West.
ContributionsGreat Britain. Department of the Environment., Great Britain. Radioactive Waste (Professional) Division.
The Physical Object
Pagination16p. ;
Number of Pages16
ID Numbers
Open LibraryOL20093935M

Determining the activity of a variety of microbial extracellular enzymes in soils and sediments can provide useful insights into rates of nutrient mineralization and organic matter processing However, soils can vary in their moisture levels, so it is Cited by: Influence of EDTA and Metal Ions on a Metalloproteinase from Pseudomonas fluorescens Biotype I Influence of EDTA and Metal Ions on a Metalloproteinase from Pseudomonas fluorescens Biotype I DIERMAYR, Peter; KROLL, Stefan; KLOSTERMEYER, Henning Biol. Chem. Hoppe-Seyler Vol. , pp. , January Peter DIERMAYR, Stefan KROLL and Henning .

Microbial degradation of synthetic chelating agents, such as EDTA and nitrilotriacetate (NTA), may help immobilizing radionuclides and heavy metals in the environment. The EDTA- and NTA-degrading bacterium BNC1 uses EDTA monooxygenase to oxidize NTA to iminodiacetate (IDA) and EDTA to ethylenediaminedi-acetate (EDDA).   Season and invertebrate effects on microbial dynamics. Season influenced microbial dynamics throughout decomposition for biomass and enzyme activities in both meshes (significant season × day interaction, all P Cited by:

Fluorescein diacetate hydrolysis assay Background information The fluorescein diacetate (FDA) hydrolysis assay measures the enzyme activity of microbial populations and can provide an estimate of overall microbial activity in an environmental sample. The assay is considered non-specific because it is sensitive toFile Size: 1MB. Standard Article. Microbial susceptibility and resistance to chemical and physical agents. Bacteriology. General Epidemiology, Transmission, and Therapy.


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Influence of microbial activity on degradation of acetate and EDTA by J. M. West Download PDF EPUB FB2

Scope and Significance. Ethylenediaminetetraacetic acid (EDTA) is a well known metal-chelating agent, extensively used for the treatment of patients who have been poisoned with heavy metal ions such as mercury and lead. More recently EDTA has been used as a permeating and sensitizing agent for treating biofilm-associated conditions in dentistry, on Cited by: The phenol degradation experiment lasted for days that can be divided into six phases.

Detailed operation condition and sampling time can be found in Table the last feeding cycle of phase 3 (day 72), before feeding, all reactors were exposed to air for 60 min to examine the influence of oxygen on the by: Now it has been shown for the first time that EDTA is about 80% biodegradable in an industrial wastewater treatment plant under technical operating conditions.

Evidence of the biodegradation was confirmed by formation of >80% CO 2 and ≥99% DOC removal in the combined CO 2 Cited by: Degradation of EDTA (ethylenediaminetetraacetic acid) or metal–EDTA complexes by cell suspensions of the bacterial strain DSM was studied.

The activity of EDTA degradation was the highest in the phase of active cell growth and decreased considerably in the stationary phase, after substrate depletion in the by: EDTA, an aminopolycarboxylic acid chelating agent, has many applications.

For example, it is used in washing powders as a substitute for polyphosphates, which have been implicated in the eutrophication of aquatic environments (11, 12).The large quantities of EDTA used commercially, and its low-level biodegradability (11, 12), allow it to remain at high levels in wastewater (11.

The chemical speciation did not influence the biodegradability of EDTA. However, when resting cells of the mixed culture were incubated with EDTA in the presence of an equivalent molar amount of FeCl 3, the reaction came to a halt before the complete consumption of the substrate.

A gram-negative isolate from the mixed population, BNC1, also Cited by: Abiotic degradation. EDTA is in such widespread use that questions have been raised whether it is a persistent organic pollutant.

While EDTA serves many positive functions in different industrial, pharmaceutical and other avenues, the longevity of EDTA can pose serious issues in the environment. The degradation of EDTA is slow. EDTA (Ethylene diamine tetra-acetate) is a chelating agent used to hold Ca++ and Mg++ ions.

One of its applications is in blood samples in order to avoid the coagulation of blood. In foods, EDTA is used in those cases where ions (hardness of water used in the food product) interfere with some properties such as gelatinisation, emulsification, etc.

Ethylenediaminetetraacetic acid (EDTA), also known by several other names, is a chemical used for both industrial and medical was synthesized for the first time in by Ferdinand Münz. It is an aminopolycarboxylic acid and a colorless, water-soluble solid. Its conjugate base is is widely used to dissolve iations: EDTA, H₄EDTA.

Ljungdahl LG, Eriksson K-E. Ecology of microbial cellulose degradation. Advances in microbial ecology. ; – Sinsabaugh RL, Antibus RK, Linkins AE, Mclaugherty CA, Rayburn L, Repert D, Weiland T.

Wood decomposition over a first-order watershed: mass loss as a function of lignocellulase activity. Soil biology and biochemistry. Stimulating the growth of enough microorganisms to ensure contaminant degradation is essential to in situ bioremediation.

However, if all the organisms accumulate in one place, such as near the wells that supply growth-stimulating nutrients and electron acceptors, microbial growth can clog the aquifer. Clogging can interfere with effective.

Microbial Activity in Soil and Copper Uptake by Br own Mustard (Brassica juncea), Soil Science and Plant Nutrition, DOI: /jtbx. C ellulose is a polymer of –14, glucose units linked by β-1,4 glycosidic bonds and is the main component of plant cell walls. As such, it is one of the most abundant polymers on Earth (Beguin and Aubert, ).Cellulose polymers are oriented in parallel and form highly ordered, insoluble crystalline domains interspersed by more disordered amorphous by: 7.

of degradation depend on the microbial quality and water activity of the excipient that has the highest proportion in the formulation (e.g., fi llers such as microcrystalline cellulose and. Factors that influence. microbial activity A knowledge of the factors that favor or inhibit the growth of the microorganisms is important in understanding the principles of food spoilage and preservation.

Six major factors: 1. Moisture 2. Oxygen 3. Temperature 4. Acidity, pH 5. Nutrients 6. Growth inhibitors Effect of moisture on microbial growth Water is essential for the growth of. Life on the planet depends on microbial activity. The recycling of carbon, nitrogen, sulphur, oxygen, phosphate and all the other elements that constitute living matter are continuously in flux: microorganisms participate in key steps in these processes and without them life would cease within a few short years.

In general, they are very sensitive to low concentrations of contaminants and rapidly response to soil perturbation. An alteration of their activity and diversity may result, and in turn it will reflect in a reduced soil quality (Schloter et al., ). Hydrocarbon contamination may Cited by: 3. The effect of temperature on bacterial degradation of EDTA in pH-auxostat Article in World Journal of Microbiology and Biotechnology 22(11) November with 35 Reads.

MICROBIAL DEGRADATION OF LIGNIN 1,2 T. Kent Kirk Forest Products Laboratory, Forest Service, United States Department of Agriculture, One Gifford Pinchot Drive, Madison, Wisconsin Roberta L. Farrell Repligen Corporation, One Kendall Square, BuildingCambridge, Massachusetts To evaluate the effect of anaerobic microbial activity on the fate of Np in natural systems, Np(V) was added to a microcosm inoculated with anaerobic sediments from a metal-contaminated freshwater lake.

The consortium included metal-reducing, sulfate-reducing, and methanogenic microorganisms, and acetate was supplied as the only exogenous. Batch tests were carried out to study the effect of simultaneous addition of ethylenediaminetetraacetic acid and Ni2+ (EDTA-Ni) on anaerobic digestion (AD) performances of kitchen wastes (KWs).

The results indicated that the cumulative biogas yield and methane content were enhanced to mL/gVS and % by adding EDTA-Ni, respectively, which were Author: Tingting Zhong, Yali Liu, Xiaorong Kang.The anti-microbial properties of acetone extracts from Hibiscus sabdariffa calyces, fractions isolated by silica gel chromatography and hibiscus acid purified from some of these fractions and additionally identified by nuclear magnetic resonance spectroscopy, mid-infrared spectroscopy and X-ray diffraction, were studied against both multidrug-resistant Salmonella strains and .Amazon dark earth (ADE) is known for its high organic matter content, biochar concentration and microbial diversity.

The biochar amount suggests the existence of microorganisms capable of degrading aromatic hydrocarbons (AHs). In an effort to investigate the influence of bacteria on the resilience and fertility of these soils, we enriched five ADE soils with naphthalene and Cited by: