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Degradation of 6-aminonaphthalene-2-sulphonic acid by mixed cultures: kinetic analysis

  • Environmental Microbiology
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Summary

The degradation of 6-aminonaphthalene-2-sulphonic acid (6A2NS) by mixed cultures via an interspecies transfer of 5-aminosalicylic acid (5AS) was investigated using a continuous chemostat culture. Two different bacterial communities were employed. Steady-state data were obtained from a multi-species culture only, but not from a defined two-species culture. Experimental data showed the conversion of 6A2NS into 5AS to be rate-determining for degradation. Both the Monod equation, and an extended model regarding the interspecies transfer of 5AS, were found to be suitable to describe the relationship between biomass and substrate concentration, depending on the flow rate of continuous culture. Substrate consumed for endogenous metabolism was considred according to Pirt (1975).

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Authors and Affiliations

  1. Fachgebiet Technische Chemie und Chemische Verfahrenstechnik Universität Paderborn, Postfach 1621, D-4790, Paderborn, Federal Republic of Germany

    R. Diekmann & D. C. Hempel

  2. Institut Mikrobiologie, Universität Stuttgart, Azenbergstrasse 18, D-7000, Stuttgart, Federal Republic of Germany

    B. Nörtemann & H. -J. Knackmuss

Authors
  1. R. Diekmann
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  2. B. Nörtemann
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  3. D. C. Hempel
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  4. H. -J. Knackmuss
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Diekmann, R., Nörtemann, B., Hempel, D.C. et al. Degradation of 6-aminonaphthalene-2-sulphonic acid by mixed cultures: kinetic analysis. Appl Microbiol Biotechnol 29, 85–88 (1988). https://doi.org/10.1007/BF00258356

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  • DOI: https://doi.org/10.1007/BF00258356

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