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  • 1
    Electronic Resource
    Electronic Resource
    Effect of pyridine on the fatty acid composition of Pimelobacter sp. (1996)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 141 (1996), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The fatty acid composition of Pimelobacter sp. is of the complex type. When pyridine was used as a sole inhibitory substrate, the fatty acid composition of Pimelobacter sp. was quite different from that within other readily available substrates. When compared with the fatty acid composition in a complex medium, the proportion of isopalmitic acid (iso-C16:0) drastically decreased from 68.4% to 7.7%, while the proportion of anteisoheptadecanoic acid (anteiso-C17:0) remained almost constant at ca. 7%. Concomitantly, this decrease of the branched-chain fatty acid was accompanied by the increase of the straight-chain, especially long-chain, fatty acid such as heptadecanoic (C17:0), octadecenoic (Cig:i), 10-methylheptadecanoic (10-me-18) and 10-methyloctadecanoic (10-me-19) acids. Consequently, in response to membrane active organic solvents, Pimelobacter sp. was found to regulate its membrane fatty acid composition in a fashion different from Gram-negative bacteria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1996.tb08375.x
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  • 2
    Electronic Resource
    Electronic Resource
    Biodegradation of 4-chlorophenol via a hydroquinone pathway by Arthrobacter ureafaciens CPR706 (1996)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 145 (1996), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract A newly isolated Arthrobacter ureafaciens, strain CPR706, could degrade 4-chlorophenol via a new pathway, in which the chloro-substituent was eliminated in the first step and hydroquinone was produced as a transient intermediate. Strain CPR 706 exhibited much higher substrate tolerance and degradation rate than other strains that degraded 4-chlorophenol by the hydroxylation at the second carbon position to form chlorocatechol. Strain CPR706 could also degrade other para-substituted phenols (4-nitro-, 4-bromo-, 4-iodo-, and 4-fluoro-phenol) via the hyroquinone pathway.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1996.tb08566.x
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  • 3
    Electronic Resource
    Electronic Resource
    Isolation and characterization of novel halotolerant and/or halophilic denitrifying bacteria with versatile metabolic pathways for the degradation of trimethylamine (2003)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 225 (2003), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Four denitrifying bacteria capable of degrading trimethylamine under both aerobic and denitrifying conditions were newly isolated from coastal sediments and wastewater contaminated by marine water. All strains were in α-Proteobacteria. Strain GP43 was classified as a member of genus Paracoccus, and strain PH32, PH34 and GRP21 were novel organisms with remote phylogenetic position from other genus α-Proteobacteria. Among these four strains were the halophilic strains PH32, PH34 and GRP21, which did not grow in the absence of sodium chloride in culture medium. Cells grown under denitrifying conditions possessed trimethylamine dehydrogenase while cells grown aerobically possessed two different enzymes for oxidation of trimethylamine, trimethylamine dehydrogenase and trimethylamine monooxygenase. The newly isolated strain PH32, PH34 and GRP21 may be the first halophilic bacteria to degrade trimethylamine under denitrifying conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0378-1097(03)00530-5
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  • 4
    Electronic Resource
    Electronic Resource
    Isolation and characterization of a novel Pseudomonas sp., strain YG1, capable of degrading pyrrolidine under denitrifying conditions (2002)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 211 (2002), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A denitrifying bacterium, strain YG1, capable of degrading pyrrolidine under denitrifying conditions, was isolated. On the basis of phenotypic and phylogenetic characteristics, it was identified as a member of the genus Pseudomonas. During the anaerobic degradation of pyrrolidine, YG1 reduced a stoichiometric amount of nitrate to nitrogen gas, demonstrating that the degradation of pyrrolidine is coupled with respiratory nitrate reduction. YG1 also degraded pyrrolidine with a higher degradation rate under aerobic conditions than under denitrifying conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.2002.tb11211.x
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  • 5
    Electronic Resource
    Electronic Resource
    Characterization of a pyridine-degrading branched Gram-positive bacterium isolated from the anoxic zone of an oil shale column (1991)
    Springer
    Applied microbiology and biotechnology 35 (1991), S. 824-829 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary From the anoxic zone of an oil shale leachate column three pyridine-degrading bacterial strains were isolated. Two strains were Gram-negative facultative anaerobic rods and one strain was a branched Gram-positive bacterium. The branched Gram-positive strain had the best pyridine-degrading ability. This organism was aerobic, non-motile, catalase positive, oxidase negative, and had no flagellum. The G+C content of the DNA was 66.5 mol%. The major menaquinone was MK-8(H2). The main cellular fatty acids were saturated and monounsaturated straight chains. This organism contained mycolic acid, meso-diaminopimelic acid, arabinogalactan and glycolyl residues in the cell wall. Due to morphological, physiological and chemotaxonomic characteristics this strain was placed in the genus Rhodococcus. The optimum culture conditions were as follows: temperature 32° C, pH 8.0 and 0.1% v/v of pyridine as sole carbon, energy and nitrogen source. Utilization of pyridine by a batch fermentor culture of Rhodococcus sp. was characterized by a specific growth rate of 0.13 h−1, growth yield of 0.61 mg cell·mg pyridine−1 and a doubling time of 5.3 h−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00169903
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  • 6
    Electronic Resource
    Electronic Resource
    Layered structure of granules in upflow anaerobic sludge blanket reactor gives microbial populations resistance to metal ions (2000)
    Springer
    Biotechnology letters 22 (2000), S. 1935-1940 
    Details
    ISSN: 1573-6776
    Keywords: bacterial resistance ; granules ; metal ions ; methanogen ; upflow anaerobic sludge blanket reactor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Metal ions (Cd2+, Cu2+, Ni2+, Zn2+ and Cr3+) did not affect glucose degradation or the production of methane during anaerobic digestion with intact and disintegrated granules from a UASB (Upflow Anaerobic Sludge Blanket) reactor. However, when Cu2+ was at 500 mg g−1 VSS (volatile suspended solids) in the media, the glucose degradation rates and methane production rates decreased by 14% and 32% in disintegrated granules, respectively, whereas, in intact granules, decreases were 3% and 14%, respectively. When various electroplating metal ions were tested, 50% inhibition of acetate degradation and methane production were produced by 210–770 mg g−1 VSS and 120–630 mg g−1 VSS, respectively. The relative toxicity of the electroplating metals on methane production was in the order of Zn2+ (most toxic) 〉 Ni2+ 〉 Cu2+ 〉 Cr3+ 〉 Cd2+ (least toxic).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026760604796
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  • 7
    Electronic Resource
    Electronic Resource
    Layered structure of UASB granules gives microbial populations resistance to toxic chemicals (1999)
    Springer
    Biotechnology letters 21 (1999), S. 159-162 
    Details
    ISSN: 1573-6776
    Keywords: granules ; UASB ; resistance ; toxic chemicals ; layered structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract To investigate the effect of granular structure on resistance to toxic chemicals in UASB (Upflow Anaerobic Sludge Blanket) reactors, normal and broken granules were examined for their ability to degrade acetate with and without the addition of toluene or trichloroethylene as a toxic chemical. Without a toxic chemical, both normal and broken granules degraded the acetate at the same volumetric degradation rate (3.21 mM h−1). However, when 500 μl l−1 of toluene or trichloroethylene was added, the acetate-degradation rate of the broken granules was about a third of the rate with normal granules. Therefore, the layered structure of the UASB granules seems to give microbial populations the ability to resist toxic chemicals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005431624995
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of soil moisture on bioremediation of chlorophenol-contaminated soil (2000)
    Springer
    Biotechnology letters 22 (2000), S. 915-919 
    Details
    ISSN: 1573-6776
    Keywords: bioremediation ; chlorophenols ; microcosm ; oxygen ; soil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A chlorophenol-contaminated soil was tested for the biodegradability in a semi-pilot scale microcosm using indigenous microorganisms. More than 90% of 4-chlorophenol and 2,4,6-trichlorophenol, initially at 30 mg kg−1, were removed within 60 days and 30 mg pentachlorophenol kg−1 was completely degraded within 140 days. The chlorophenols were degraded more effectively under aerobic condition than under anaerobic condition. Soil moisture had a significant effect with the slowest degradation rate of chlorophenols at 25% in the range of 10–40% moisture content. At 25–40%, the rate of chlorophenol degradation was directly related to the soil moisture content, whereas at 10–25%, it was inversely related. Limited oxygen availability through soil agglomeration at 25% moisture content might decrease the degradation rate of chlorophenols.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005612232079
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  • 9
    Electronic Resource
    Electronic Resource
    Nitrite accumulation in a sequencing batch reactor during the aerobic phase of biological nitrogen removal (1997)
    Springer
    Biotechnology letters 19 (1997), S. 195-198 
    Details
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Accumulation of nitrite occurred during the aerobic phase of a sequencing batch reactor (SBR) operating to remove nitrogen from synthetic waste water. Although present, heterotrophic nitrifiers were not involved in the nitrification of the SBR. The activity of autotrophic nitrite oxidizers was reduced in the SBR where free ammonia was the main inhibitor for the nitrite oxidation. Nitrite build-up in the SBR was reduced when the aerobic phase was extended. All the ammonia could be oxidized when the aerobic phase was longer than four hours. The accumulated nitrite and nitrate were removed completely in the post-anoxic phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018332902524
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  • 10
    Electronic Resource
    Electronic Resource
    Inhibitory effect of hardwood lignin on acetate-utilizing methanogens in anaerobic digester sludge (2000)
    Springer
    Biotechnology letters 22 (2000), S. 1531-1535 
    Details
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005620726731
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