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Bioprocess Engineering

, Volume 19, Issue 2, pp 155–157 | Cite as

Stability of immobilized R. oryzae in repetitive batch productions of L(+)-lactic acid: effect of inorganic salts

  • Y. Sun
  • Y.-L. Li
  • S. Bai
  • H. Yang
  • Z.-D. Hu
Article

Abstract

Rhizopus oryzae was immobilized in polyurethane foam cubes by a natural attachment method. The effect of inorganic salts on the stability of the immobilized mycelium in repetitive batch productions of L(+)-lactic acid was studied. The amount of the inorganic salts necessary to maintain the activity of the immobilized R. oryzae in the repetitive batch fermentations strongly depended upon the initial glucose concentrations. For example, the amount of the inorganic salts should be doubled if the initial glucose concentration was twice increased. The minimum amounts of the inorganic salts were therefore determined for effective lactic acid productions in the repetitive batch fermentations with the immobilized R. oryzae.

Keywords

Glucose Fermentation Foam Lactic Acid Glucose Concentration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Y. Sun
    • 1
  • Y.-L. Li
    • 1
  • S. Bai
    • 1
  • H. Yang
    • 1
  • Z.-D. Hu
    • 1
  1. 1.Department of Biochemical Engineering, Tianjin University, Tianjin 300072, P. R. ChinaCN

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