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Related Experiment Video

Updated: Sep 6, 2025

Methanol Independent Expression by Pichia Pastoris Employing De-repression Technologies
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Dynamic Feeding for Pichia pastoris.

Alexander Pekarsky1, Oliver Spadiut2

  • 1Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience Engineering, Research Area Biochemical Engineering, Technische Universität Wien, Vienna, Austria.

Methods in Molecular Biology (Clifton, N.J.)
|July 5, 2022
PubMed
Summary

This study introduces a rapid method using substrate-pulsed batch experiments to determine Pichia pastoris strain parameters. This optimizes fed-batch cultivation feeding strategies, saving time and resources.

Keywords:
Dynamic fed-batch strategyPichia pastorisSpecific substrate uptake rateStrain characterizationStrain physiologySubstrate pulsesYeast

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Area of Science:

  • Biotechnology
  • Microbial Cultivation
  • Metabolic Engineering

Background:

  • Optimizing fed-batch cultivation for recombinant Pichia pastoris requires precise strain-specific parameters.
  • Traditional methods like continuous or multiple fed-batch cultivations are time-consuming and labor-intensive.

Purpose of the Study:

  • To develop a faster method for determining essential Pichia pastoris strain parameters.
  • To enable the setup of dynamic feeding strategies for fed-batch cultivations based on specific substrate uptake rates.

Main Methods:

  • Utilizing batch experiments with substrate pulses.
  • Extracting key strain characteristic parameters from pulse experiments.
  • Describing the procedural steps for implementing dynamic feeding strategies.

Main Results:

  • A significantly faster approach to obtain critical strain parameters compared to conventional methods.
  • Successful extraction of parameters necessary for dynamic feeding strategy development.
  • Detailed methodology for achieving desired feeding dynamics.

Conclusions:

  • The substrate-pulsed batch method offers an efficient alternative for characterizing Pichia pastoris strains.
  • This method facilitates the optimization of fed-batch cultivation processes through dynamic feeding strategies.
  • Enables faster process development and scale-up for recombinant protein production.