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Related Experiment Videos

Reaction engineering methods to study intracellular metabolite concentrations

D Weuster-Botz1, A A de Graaf

  • 1Institute of Biotechnology, Research Center Jülich, Germany.

Advances in Biochemical Engineering/Biotechnology
|January 1, 1996
PubMed
Summary
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Measuring intracellular metabolite concentrations is crucial for microbial metabolic engineering. This review covers in vivo NMR spectroscopy and rapid invasive sampling techniques for obtaining vital cellular data.

Area of Science:

  • Biotechnology
  • Metabolic Engineering
  • Analytical Chemistry

Background:

  • Accurate intracellular metabolite concentrations are fundamental for optimizing microbial cell factories.
  • Understanding cellular metabolism requires precise measurement of metabolite levels under various physiological states.

Purpose of the Study:

  • To review and compare in vivo NMR spectroscopy and rapid invasive sampling techniques for metabolite analysis.
  • To discuss these methods from a reaction engineering perspective for obtaining reliable data.
  • To highlight applications in balanced steady states and dynamic transitional states.

Main Methods:

  • In vivo Nuclear Magnetic Resonance (NMR) spectroscopy (non-invasive) for real-time metabolite monitoring.
  • Rapid invasive sampling devices for high-time-resolution metabolite profiling.

Related Experiment Videos

  • Application examples using membrane-cyclone-reactor and sampling tube configurations.

    • Main Results:

    • In vivo NMR spectroscopy provides non-invasive insights into intracellular metabolite concentrations.
    • Rapid sampling devices allow for high-frequency data acquisition (up to 2s-1).
    • Demonstrated utility in achieving high signal sensitivity and dynamic metabolite profile measurement.

    Conclusions:

    • Both in vivo NMR and rapid sampling are essential tools for metabolic engineering.
    • Reaction engineering principles are key to obtaining accurate intracellular concentration data.
    • These techniques enable detailed analysis of microbial metabolism under diverse conditions.