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Updated: Jul 8, 2026
07:38
Saccharomyces cerevisiae Exponential Growth Kinetics in Batch Culture to Analyze Respiratory and Fermentative Metabolism
Published on: September 30, 2018
A thermodynamic analysis of microbial growth experiments
Jennifer N Smith1, Everett L Shock
1Department of Chemistry & Biochemistry, Arizona State University,Tempe, Arizona 85287, USA.
Astrobiology
|January 1, 2008
Summary
Microbial metabolism can be understood through thermodynamics. Optimal growth conditions yield 10^10 to 10^14 cells per watt, providing quantitative habitability constraints.
Area of Science:
- Microbial metabolism
- Thermodynamics
- Astrobiology
Background:
- Microbial metabolic processes release energy, enabling thermodynamic comparisons.
- Energy requirements constrain habitability, but previous studies focused on minimum growth energy.
Purpose of the Study:
- To understand microbial responses under highly habitable conditions.
- To analyze energy and power consumption during optimized microbial growth.
Main Methods:
- Thermodynamic analysis of microbial growth experiments from literature.
- Speciation and standard state calculations to determine Gibbs energy change.
Main Results:
- Similar cell yields (10^9 to 10^10) were achieved irrespective of growth duration or Gibbs energy change.
- Optimal growth conditions produced 10^10 to 10^14 cells per watt of consumed power.
Conclusions:
- Thermodynamic analysis provides quantitative constraints on microbial habitability.
- Optimal growth yields are linked to power consumption, offering insights into microbial energy efficiency.
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