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Related Experiment Videos

Repeated solid-phase fermentation and extraction for enzyme production.

G T Tsao1, C S Gong, N J Cao

  • 1Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, IN 47907-1295, USA.

Applied Biochemistry and Biotechnology
|June 13, 2000
PubMed
Summary

Solid-phase fermentation significantly boosts cellulase enzyme production compared to liquid methods. Novel techniques like pressure pulsation and repeated extraction achieved 806 FPU/(h.L) productivity, greatly enhancing enzyme yields.

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Area of Science:

  • Biotechnology
  • Enzyme Engineering
  • Industrial Microbiology

Background:

  • Liquid submerged fermentation is common for enzyme production but has limitations.
  • Solid-phase fermentation offers higher potential productivity for enzymes like cellulases.
  • Trichoderma cultures are widely used for cellulase biosynthesis.

Purpose of the Study:

  • To compare the productivity of solid-phase fermentation with liquid submerged fermentation for cellulase production.
  • To investigate the efficacy of novel techniques (pressure pulsation and repeated extraction) in enhancing solid-phase fermentation yields.
  • To assess the applicability of these techniques for other enzyme productions by fungal cultures.

Main Methods:

  • Solid-phase fermentation was conducted in 1000-mL flasks.

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  • Novel techniques involving pressure pulsation and repeated extraction were applied to optimize the process.
  • Cellulase activity was measured in filter paper units (FPU).

    • Main Results:

    • Solid-phase fermentation yielded 234 FPU/(h.L) in preliminary experiments.
    • The application of pressure pulsation and repeated extraction increased productivity to 806 FPU/(h.L).
    • These techniques also enhanced the productivity of other enzymes produced via solid-phase fermentation.

    Conclusions:

    • Solid-phase fermentation, especially with pressure pulsation and repeated extraction, is a highly productive method for enzyme biosynthesis.
    • The developed techniques offer a significant improvement over traditional submerged fermentation for cellulase and other enzyme production.
    • This advancement holds promise for more efficient industrial enzyme manufacturing.