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Available electron and energetic yields in fermentation processes.

L E Erickson, M D Oner

    Annals of the New York Academy of Sciences
    |January 1, 1983
    PubMed
    Summary
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    This study compares microbial energetics using free energy and electron balances, assessing growth yields under anaerobic conditions. Results provide insights into microbial efficiency and theoretical maximum yields.

    Area of Science:

    • Microbiology
    • Biochemical Engineering
    • Bioenergetics

    Background:

    • Microbial growth and product formation are crucial in biotechnology.
    • Understanding microbial energetics is key to optimizing bioprocesses.
    • Existing methods for assessing microbial efficiency have limitations.

    Purpose of the Study:

    • To investigate microbial growth and product yields in various cultures.
    • To compare the efficiency of microbial energetics using free energy and available electron balances.
    • To estimate true microbial growth yields under anaerobic conditions and compare them with theoretical maximums.

    Main Methods:

    • Analysis of available electron and free energy balances for microbial cultures.
    • Calculation of energetic yields based on free energy analysis.

    Related Experiment Videos

  • Comparison of free energy-based yields with available electron-based yields.
  • Application of statistical methods to estimate true growth yields under anaerobic conditions.

    • Main Results:

    • Energetic yields were calculated using both free energy and available electron analyses.
    • A comparison revealed differences between the two energetic yield estimation methods.
    • True growth yields under anaerobic conditions were estimated using statistical approaches.
    • The estimated yields were benchmarked against theoretical maximum microbial growth yields.

    Conclusions:

    • Free energy and available electron balances offer distinct perspectives on microbial energetics.
    • Statistical methods provide a means to estimate realistic microbial growth yields.
    • The study contributes to a better understanding of microbial efficiency and energetic limitations.