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  • Springer  (2)
  • Cambridge University Press
  • 1985-1989  (2)
  • 1989  (2)
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  • 1985-1989  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    The isolation and characterisation of bacteria capable of accumulating silver (1989)
    Springer
    Applied microbiology and biotechnology 31 (1989), S. 308-313 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary The isolation of silver-resistant, silver-accumulating bacteria is reported. Following the screening of a number of environmental sources, silver-resistant Enterobacteriaceae were isolated from both sewage and photographic processing effluent. The level of resistance to silver and other heavy metals was determined for a selection of these isolates and, together with preliminary accumulation data derived from batch culture studies, one isolate, a strain of Citrobacter intermedius, was selected for further examination. The effect of silver concentration on batch culture growth of this organism was also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00258415
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  • 2
    Electronic Resource
    Electronic Resource
    Accumulation of silver by growing and non-growing populations of Citrobacter intermedius B6 (1989)
    Springer
    Applied microbiology and biotechnology 31 (1989), S. 314-319 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Accumulation of silver is reported for growing and non-growing populations of Citrobacter intermedius B6. In non-growing cultures a maximum uptake of 4.35% (w/w) was observed at an initial silver concentration of 2111.2 μmol Ag+ l-1. In contrast the maximum uptake of silver by growing bacteria was 2.81% (w/w) at an effective concentration of silver of 217.8 μmol·l-1. Silver accumulation rates in both resting (460 μmol Ag+ g-1 per hour) and continuously grown (41 μmol Ag+ g-1 per hour) bacteria are higher than previously reported. Cell fractionation and electron microscopy of continuously grown bacteria indicated that accumulation of silver was associated with the cell envelope, in the form of dense deposits of macromolecular proportions. This observation discounts simple surface adsorption as the process of accumulation in growing cultures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00258416
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    Paper (German National Licenses)
    Fulltext
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