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Related Experiment Videos

Bioconversion of corn straw by coupling ensiling and solid-state fermentation.

X Yang1, H Chen, H Gao

  • 1State Key Laboratory of Biochemical Engineering, Institute of Chemical Metallurgy, Chinese Academy of Sciences, Beijing.

Bioresource Technology
|May 9, 2001
PubMed
Summary
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This study combined solid-state fermentation (SSF) and ensiling to improve corn straw for animal feed. The process enhanced protein content and digestibility, making it a more nutritious and palatable feed option.

Area of Science:

  • Agricultural Science
  • Biotechnology
  • Animal Nutrition

Background:

  • Corn straw is an abundant agricultural residue with low nutritional value.
  • Improving the digestibility and nutrient content of crop residues is crucial for sustainable animal feed production.
  • Current methods for upgrading crop residues can be costly and inefficient.

Purpose of the Study:

  • To develop an efficient bioconversion process for corn straw using a combination of solid-state fermentation (SSF) and ensiling.
  • To enhance the nutritional value and palatability of corn straw for animal feed.
  • To evaluate the impact of ensiling temperature on the bioconversion process.

Main Methods:

  • A two-stage bioconversion process involving solid-state fermentation (SSF) followed by ensiling.

Related Experiment Videos

  • SSF was performed on corn straw, with subsequent inoculation using lactic acid bacteria (LAB).
  • Ensiling efficiency was evaluated at various temperatures (25°C, 30°C, 35°C, 40°C).

    • Main Results:

    • SSF significantly increased protein content from 6.7% to 14.7% and reduced cellulose and hemicellulose.
    • Cellulase and xylanase were produced during SSF, aiding in cell wall degradation.
    • Ensiling with LAB resulted in rapid pH drop, high lactic acid production, and generation of reducing sugars.
    • Higher ensiling temperatures accelerated the ensiling period.

    Conclusions:

    • The combined SSF and ensiling process effectively upgrades corn straw's nutritional value for animal feed.
    • This integrated approach enhances ensiling efficiency and reduces overall bioprocessing costs.
    • The method offers a promising strategy for valorizing agricultural byproducts into valuable animal feed resources.