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Related Experiment Videos

Xylanase production in solid state fermentation by Aspergillus niger mutant using statistical experimental designs.

Y S Park1, S W Kang, J S Lee

  • 1Graduate School of Biotechnology, Korea University, 1, Anam-dong, Sungbuk-ku, Seoul, 136-701, Korea.

Applied Microbiology and Biotechnology
|May 22, 2002
PubMed
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Optimized solid-state fermentation (SSF) conditions significantly boosted xylanase production by Aspergillus niger. Key factors included cultivation time and basal medium concentration for enhanced enzyme activity.

Area of Science:

  • Biotechnology
  • Enzyme Engineering
  • Microbial Fermentation

Background:

  • Xylanase is a crucial enzyme for biomass degradation.
  • Solid-state fermentation (SSF) offers an efficient method for enzyme production.
  • Optimization of SSF parameters is vital for maximizing enzyme yield.

Purpose of the Study:

  • To optimize solid-state fermentation (SSF) conditions for enhanced xylanase production.
  • To identify the key factors influencing xylanase activity in Aspergillus niger fermentation.
  • To determine the optimal parameters for maximizing xylanase yield and productivity.

Main Methods:

  • Statistical experimental designs were employed for optimization.
  • Variables optimized included initial moisture content, cultivation time, inoculum size, and basal medium concentration.

Related Experiment Videos

  • Aspergillus niger mutant was used for xylanase production in SSF.

    • Main Results:

    • Cultivation time and basal medium concentration were identified as the most significant factors affecting xylanase activity.
    • Optimal conditions included an inoculum size of 5 x 10(5) spores/g, 65% initial moisture content, 5 days cultivation time, and a 10x concentrated basal medium with 50x corn steep liquor.
    • Under optimized conditions, xylanase activity reached 5,071 IU/g of rice straw with a productivity of 14,790 IU l(-1) h(-1).

    Conclusions:

    • The study successfully optimized SSF parameters for high-yield xylanase production.
    • The optimized conditions significantly enhanced xylanase activity and productivity.
    • The findings provide a valuable framework for industrial-scale xylanase production using Aspergillus niger.