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Interfacial adsorption of microorganisms and its effect on oxygen absorption by fermentation broths

Abstract

Steady-state mass transfer experiments were done to determine whether certain strains of bacteria in homogeneous suspension will accumulate at the gas:liquid interface and thereby significantly increase the oxygen transfer rate to the suspension. In particular, with suspensions ofB. licheniformis, the measured transfer rates are as much as three times the rate expected for a uniform suspension. In contrast, suspensions ofM. luteus show no increase in oxygen flux above expected values. The fact thatB. licheniformis is motile, whereasM. luteus is not suggests that cell motility may play an important role in the accumulation process.

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Correspondence to Luis Roberto King or Harvey J. Palmer.

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King, L.R., Palmer, H.J. Interfacial adsorption of microorganisms and its effect on oxygen absorption by fermentation broths. Appl Biochem Biotechnol 20, 403–419 (1989). https://doi.org/10.1007/BF02936499

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Index Entries

  • Fermentation
  • oxygen transport
  • microbial accumulation at interfaces
  • Bacillus licheniformis