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Related Experiment Videos

Alpha-galactosidase production by Aspergillus oryzae in solid-state fermentation.

S K Shankar1, V H Mulimani

  • 1Department of Biochemistry, Gulbarga University, Gulbarga, 585106, Karnataka, India.

Bioresource Technology
|May 23, 2006
PubMed
Summary

Red gram plant waste (RGPW) is a potent substrate for alpha-galactosidase production using Aspergillus oryzae. Combining RGPW with wheat bran (WB) further enhanced enzyme yield under optimized solid-state fermentation conditions.

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Area of Science:

  • Biotechnology
  • Enzyme Technology
  • Microbial Fermentation

Background:

  • Alpha-galactosidase is an important enzyme with various industrial applications.
  • Exploring cost-effective and sustainable substrates for enzyme production is crucial.
  • Agro-industrial wastes offer potential as fermentation substrates.

Purpose of the Study:

  • To evaluate red gram plant waste (RGPW) as a substrate for alpha-galactosidase production.
  • To compare RGPW with wheat bran (WB) and other substrates using Aspergillus oryzae.
  • To optimize solid-state fermentation (SSF) conditions for enhanced enzyme yield.

Main Methods:

  • Solid-state fermentation (SSF) using Aspergillus oryzae.
  • Cultivation on red gram plant waste (RGPW), wheat bran (WB), and mixed substrates.

Related Experiment Videos

  • Optimization of moistening agent ratio, pH, inoculum volume, and incubation time.
  • Enzyme activity assay for alpha-galactosidase quantification.

    • Main Results:

    • RGPW yielded higher alpha-galactosidase titers (3.4 U/g) compared to WB (2.7 U/g).
    • A mixture of RGPW and WB (1:1, w/w) further enhanced enzyme production.
    • Optimal conditions included a 1:2 (w/v) moistening agent ratio, pH 5.5, 1 ml inoculum, and 4 days of incubation.
    • Increased substrate concentration (RGPW+WB) did not negatively impact enzyme yield in trays.

    Conclusions:

    • Red gram plant waste (RGPW) is a highly effective substrate for microbial alpha-galactosidase production.
    • Solid-state fermentation using RGPW and optimized conditions offers a promising approach for enzyme manufacturing.
    • The use of agro-industrial waste like RGPW contributes to sustainable bioprocessing.