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Related Experiment Videos

Optimization of solid fermentation of cellulase from Trichoderma koningii.

Pei-Jun Li1, De-Bing Jing, Qi-Xing Zhou

  • 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. lipeijunzh@sina.com

Journal of Environmental Sciences (China)
|November 24, 2004
PubMed
Summary

Optimizing Trichoderma koningii F244 solid fermentation enhances cellulase production for peashrub fodder. This breakthrough supports sustainable development and livestock feeding in regions like Ordos.

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Area of Science:

  • Biotechnology
  • Enzymology
  • Microbial Fermentation

Background:

  • Peashrub is an underutilized resource in Ordos.
  • Developing cost-effective, high-activity cellulase is crucial for utilizing peashrub as animal fodder.
  • Optimizing microbial culture technology, particularly the fermentation substrate, is key to efficient cellulase production.

Purpose of the Study:

  • To optimize the solid fermentation substrate for Trichoderma koningii F244 to produce a high-activity cellulase complex.
  • To develop mathematical models for predicting enzymatic activities based on substrate composition.
  • To evaluate the efficacy of the produced cellulase complex in improving livestock feed, specifically for goats.

Main Methods:

  • Solid fermentation of Trichoderma koningii F244 using a uniform design experimental approach.

Related Experiment Videos

  • Mathematical modeling (Unconstraint Mathematical Programming and Multivariate Regression Program of SPSS10.0) to determine optimal substrate composition.
  • Assaying cellulase activities including Filter Paper Activity (FPA), cotton lyase, carboxymethyl cellulase (CMCase), and beta-glucosidase.
  • Animal feeding trials with goats to assess the impact of the cellulase complex on growth rate.

    • Main Results:

    • Tween80 was found to have a negative impact on cellulase production during solid fermentation.
    • An optimized substrate prescription was identified: 16.9% straw powder, 26.5% wheat bran, 9.5% (NH4)2SO4, and 47.1% water.
    • The optimized substrate yielded a cellulase complex with activity comparable to Trichoderma reesei Q9414.
    • Goats fed peashrub supplemented with this cellulase complex showed an average daily weight gain increase of 0.3 kg/d.

    Conclusions:

    • The study successfully optimized a substrate for high-yield cellulase production by Trichoderma koningii F244.
    • The developed cellulase complex shows significant potential for improving the nutritional value of peashrub fodder for livestock.
    • This research offers a sustainable approach for integrating local resource utilization, economic development, and environmental restoration in regions like Ordos.