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Optimal medium use for continuous high density perfusion processes.

H Büntemeyer1, C Wallerius, J Lehmann

  • 1Institute for Cell Culture Technology, University of Bielefeld, Germany.

Cytotechnology
|January 1, 1992
PubMed
Summary
This summary is machine-generated.

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This study introduces a continuous medium cycle bioreactor (cMCB) to manage waste products in cell culture. This system optimizes substrate use and reduces costs by controlling inhibitory metabolites during perfusion processes.

Area of Science:

  • Biotechnology
  • Bioprocess Engineering
  • Cell Culture Technology

Background:

  • High cell density in continuous perfusion requires managing substrates, inhibitors, and waste products.
  • High perfusion rates generate large volumes of product-containing medium, increasing processing costs.
  • Recycling spent medium necessitates controlling or removing toxic metabolites.

Purpose of the Study:

  • To develop a continuous fermentation system for identifying limiting and inhibitory substances.
  • To optimize perfusion cultures by reducing perfusion rates and improving substrate utilization.
  • To identify secreted metabolic waste products acting as inhibitors or toxic metabolites.

Main Methods:

  • Development and implementation of a continuous medium cycle bioreactor (cMCB).

Related Experiment Videos

  • Generation of limitation and inhibition effects within the cMCB system.
  • Analysis of serum-free perfusion cultures of hybridoma cells.

    • Main Results:

    • The cMCB system successfully identified key limiting and inhibitory components.
    • Lowered total perfusion rates were achieved in serum-free hybridoma cell cultures.
    • Optimal substrate utilization was obtained, indicating improved process efficiency.

    Conclusions:

    • The cMCB system enables effective control of metabolites in continuous perfusion cultures.
    • Reduced perfusion rates and optimized substrate utilization lead to decreased production costs.
    • Identification and management of inhibitory waste products are crucial for efficient bioprocessing.