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Saturday, April 25, 2020 | History

2 edition of Toxicity of toluene and o-xylene to Pseudomonas testosteroni in the starvation/survival mode found in the catalog.

Toxicity of toluene and o-xylene to Pseudomonas testosteroni in the starvation/survival mode

Sungho Kong

Toxicity of toluene and o-xylene to Pseudomonas testosteroni in the starvation/survival mode

  • 279 Want to read
  • 36 Currently reading

Published .
Written in English

    Subjects:
  • Pseudomonas.,
  • Toluene -- Toxicology.,
  • Xylene -- Toxicology.,
  • Bacteriology.

  • Edition Notes

    Statementby Sungho Kong.
    The Physical Object
    Paginationvii, 22 leaves, bound :
    Number of Pages22
    ID Numbers
    Open LibraryOL16767283M

      Compensation: proximal renal tubule reabsorbs all HCO 3-filtered (kinetics limited by number of transporters) and distal tubule produces more: it keeps more CO 2 from plasma and produces both HCO 3-(which outflows in interstitium) and H + (which outflows into the tubule via Na + /H + antiporter and eventually H + ATPase and K + /H + antiporter: in the latter case K + is secreted back into   Biodegradation Kinetics of 1,4-Dioxane in Chlorinated Solvent A fibrous-bed bioreactor containing the coculture of Pseudomonas putida and P. fluorescens immobilized in a fibrous matrix was developed to degrade benzene (B), toluene (T), ethylbenzene (E), and o-xylene (X) in synthetic waste kinetics of BTEX biodegradation by immobilized cells adapted in the fibrous-bed bioreactor and free cells grown in serum bottles were ://


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Toxicity of toluene and o-xylene to Pseudomonas testosteroni in the starvation/survival mode by Sungho Kong Download PDF EPUB FB2

Toxic tips: Xylene. Toxicity of toluene and o-xylene to Pseudomonas testosteroni in the starvation/survival mode / Sung-Ho Kong; Sungho; Typescript. Thesis (M.S.)-   Toxicity of toluene and o-xylene was tested with a deep subsurface isolate during day starvation period.

During day starvation period, toxicity appeared to increase with cell age until cells reached the starvation mode. This result may have an significant implication toin situ bioremediation applications since subsurface bacterial populations are apparently in starvation-survival :// Request PDF | Isolation and characterization of benzene, toluene and xylene degrading Pseudomonas sp.

selected as candidates for bioremediation | In oil contaminated environments the poor carbon   The adsorption of chromium (Cr+6) to a denitrifying consortium was investigated for starved and fresh cells under three pH values (pHand ).

Cells starved 50 days adsorbed approximately 10–15% more Cr+6 than fresh (0 day) cells at those three pH :// A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the :// Biodegradation kinetics of benzene, toluene, and phenol as single and mixed substrates for Pseudomonas putida F1 Article in Biotechnology and Bioengineering 69(4) Vol Is November ISSN: (Print) Toxicity of toluene and o-xylene toAcinetobacter calcoaceticus in starvation-survival mode.

Sungho Kong, Donald L. However, the decreased survival of free-living planktonic bacteria in stress conditions might be due to unavailability of the pollutants, decreased protection, and low metabolic activity.

Sessile microorganisms of a biofilm provide structure and protection due to their complex polymeric matrix (Vu et al., ). In addition, genetic Microbial biofilm is a new emerging subject for microbiologists to work in the areas of environment, industry, agriculture, and health.

Biofilms enhance the proliferation and colonization of microbes on surface and protect cells in an adverse :// 1. Introduction. Phenol and its derivatives are both natural and anthropogenic aromatic compounds categorized as priority hazardous substances by the Agency of Toxic Substances and Disease Registry (ATSDR, ) due to their potential toxic, mutagenic, carcinogenic, and teratogenic is frequently found in wastewaters from various industrial processes (e.g., oil refining, coking Work with microbial consortia in the field, in enrichment cultures, and in microcosms has illustrated that hydrocarbons such as toluene (, ), alkylbenzenes including m- o- and p-xylene and trimethylbenzenes (39, ), benzene (90,), naphthalene and phenanthrene (50, ), methylnaphthalene and tetralin (20 Biodegradation and Bioremediation of Organic Chemical Pollutants by Pseudomonas Fig.

Convergence of catabolic pat hways of aromatic compounds at catechol, protocatechuate,   SYLLABI-BOOK MAPPING TABLE APPLIED CHEMISTRY Syllabi Mapping in Book Unit Environmental Chemistry Hazardours materials and their ill effects. Acid rain, ozone hole and green h Hydrocarbon-degrading bacteria are important resources for use in phytoremediation applications.

Yet, for many hydrocarbonoclastic strains the genetic information regarding pollutant degradation and detoxification has not been thoroughly revealed. In this study, hydrocarbon-degrading bacteria were isolated from a long-term oil-polluted soil in Bóbrka, :// "Comparison of benzyl alcohol dehydrogenases and benzaldehyde dehydrogenases from the benzyl alcohol and mandelate pathways in Acinetobacter calcoaceticus and from the TOL-plasmid-encoded toluene pathway in Pseudomonas putida.

N-terminal amino acid sequences, amino acid compositions and immunological cross-reactions." Biochem J (Pt 1);?object=Publications.

Mechanisms of toxicity - mode of action 8. EFFECTS ON HUMANS Effects on humans Pseudomonas putida and a mixed microbial culture had EC 50 values of to 35 mg/litre, These differences are probably related to the effect that the degree of starvation ketosis has on the metabolism and overall disposition of Nevertheless, it is important to note that some of the extended pathways of Pseudomonas spp.

might not necessarily be linked to the biodegradation of a specific compound, but are key elements for the survival of these microorganisms under harsh conditions. The second possibility is to design and build minimalistic microbes by importing the Biodegradation is defined as the biologically catalyzed reduction in complexity of chemical compounds [ 1 ].

Indeed, biodegradation is the process by which organic substances are broken down into smaller compounds by living microbial organisms [ 2 ]. When biodegradation is complete, the process is called "mineralization".

However, in most cases   Biosensors responding to bioavailable benzene, toluene and xylene (BTEX) in soil have been constructed by inserting the luxCDBAE or luc genes (lucFF is the firefly Photinus pyralis luciferase gene) in different plasmidial genes involved in the catabolic pathways of such compounds, using P.

putida strains [6, 20] or E. coli. Insertions of improves oxygenation and survival ( cm H 2 O pressure). For infants exhibiting respiratory acidosis, hypoxemia or apnea, intermittent positive pressure ventilation will be required in addition to positive end-expiratory pressure (PEEP).

An umbilical or radial arterial line   The present review provides a detailed insight into some of the key factors that affect the efficiency of in situ bioremediation along with a comprehensive account of the integrative approaches used for assessing the ecological sustainability of :// this book was published there have been enormous changes in the water products with their relative toxicity limits in drinking water.

leading to poverty, starvation, serious illness and frequently death. After decades of dedicated and life-saving work by In this study, a multifaceted approach for selecting the suitable candidates for bioaugmentation of activated sludge (AS) that supports leachate treatment was used.

To determine the exploitation of 10 bacterial strains isolated from the various matrices for inoculating the AS contaminated with the Kalina pond leachate (KPL), their degradative potential was analyzed along with their aptitude to Bioremediation of soil contaminated with polychlorinated biphenyls (PCBs) is potentially a cost-effective cleanup strategy as it can be performed on-site.

My general 5 aims were to isolate PCB-degrading bacteria from PCB-contaminated Arctic soil and to determine if these bacteria are adapted for PCB degradation at low temperature.

An Arctic soil bacterium and a mesophilic bacterium were   C(n) = fC(o)(1-p)n-1 In this expression, C(o) is the initial residue level, C(n) is the level after n years, f is the proportion remaining after the first year, and p is the proportion lost in each of the succeeding years.

In Elgar's studies, the mean estimate of these latter two parameters was f = and p =but in the Decker work, 91 - aldrin and Gabe Podcast Sakthi Monk Media Gentleman and Lady's Book of Politeness and Propriety of Deportment, The by CELNART, Élisabeth Olivier I LOVE PACA Podcast Mr.J Featured software All software latest This Just In Old School Emulation MS-DOS Games Historical Software Classic PC Games Software Library Full text of "Casarett and Doull's toxicology: the basic science of poisons" See other formats   hour period.

The polyaromatic hydrocarbon (PAH) and benzene, toluene, ethylene and xylene (BTEX) constituents of the 5X concentrated exposure solutions (control, WAF, dispersants and CEWAFs) were determined and those of the 1× exposures were derived using a dilution :// Identification of a membrane protein and a truncated LysR-type regulator associated with the toluene degradation pathway in Pseudomonas putida F1.

TodX: Pseudomonas putida: The sixty nucleotide OccR operator contains a subsite essential and sufficient for OccR binding and a second subsite required for ligand-responsive DNA Sustainable biofuels, biomaterials, and fine chemicals production is a critical matter that research teams around the globe are focusing on nowadays.

Polyhydroxyalkanoates represent one of the biomaterials of the future due to their physicochemical properties, biodegradability, and biocompatibility. Designing efficient and economic bioprocesses, combined with the respective social and Full text of "Pseudomonas [electronic resource]: Volume 3 Biosynthesis of Macromolecules and Molecular Metabolism" See other formats "Unique & Overlapping Pollutant Stress Proteins of Escherichia coli." Appl Environ Microbiol 58(l) (Jan.

) EVANS, P.J. et al. "Metabolites Formed during Anaerobic Transformation of Toluene & o-Xylene & Their Proposed Relationship to the Initial Steps of Toluene Mineralization." Appl Environ Microbiol 5S(2)://?Dockey= Biodegradation and Detoxification of Environmental Recalcitrant Compounds 23 d) Oxidation: Oxidation of the polymer takes place if subsequent exposure of plastic to heat on time scale leads to breakdown of plastic.

Once a polymer is oxidized it shows significant reduction in Oiil, O.C., at al. Toxicity of 1,1-dicnlcroethylene (vinylidene chloride) to aquatic organisms. Dow Chemical Co. (Manuscript) Greim, H., et al. Mutagenicity in vitro and potential carcinogeni- city of chlorinated ethylenes as a function of metabolic oxirane ://?Dockey=   oft-quoted example is that for toluene degradation in Pseudomonas putida,which exhibits a fascinating interplay between the genes carried on the chromosome and the plasmids (Burlage, Hooper and Sayler ).

Bacteria are constantly being discovered which exhibit pathways involved in the degradation and synthesis of “Slime” played a brief and spectacular role in the 19th century founded by the theory of primordial slime by Ernst Haeckel. However, that substance was never found and eventually abandoned.

Further scientific attention slowly began in the s referring to slime as a microbial product and then was inspired by “How bacteria stick” by Costerton et al. inand the matrix material   Canada, et al.

Directed evolution of toluene ortho-monooxygenase for enhanced 1-naphthol synthesis and chlorinated ethene degradation. J Bacteriol. Jan. ;(2) Chang, et al. Acetate metabolism in a pta mutant of Escherichia coli W importance of maintaining acetyl coenzyme A flux for growth and survival.

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