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Gluconobacter oxydans: its biotechnological applications.

A Gupta1, V K Singh, G N Qazi

  • 1School of Biotechnology, Devi Ahilya University, Indore, India.

Journal of Molecular Microbiology and Biotechnology
|May 22, 2001
PubMed
Summary

Gluconobacter oxydans, a bacterium, efficiently converts sugars and alcohols into valuable products like L-sorbose and D-gluconic acid. This review highlights its biotechnological applications, biochemistry, and molecular biology.

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Area of Science:

  • Microbiology
  • Biotechnology
  • Biochemistry

Background:

  • Gluconobacter oxydans is a Gram-negative bacterium known for incomplete oxidation of carbohydrates and alcohols.
  • It thrives in sugary environments and is industrially significant for producing valuable compounds.
  • While generally non-pathogenic, it can cause fruit rot.

Purpose of the Study:

  • To review the diverse biotechnological applications of Gluconobacter oxydans.
  • To summarize recent advances in its basic biochemistry and molecular biology.
  • To consolidate knowledge on its industrial relevance and potential.

Main Methods:

  • Review of existing literature on Gluconobacter oxydans.
  • Analysis of fermentation studies for key oxidation processes.

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  • Examination of enzyme purification and molecular characterization data.

    • Main Results:

    • G. oxydans produces L-sorbose, D-gluconic acid, keto-gluconic acids, and dihydroxyacetone with high yields.
    • Key enzymes like polyol dehydrogenases have been purified and characterized.
    • Its potential in biosensor technology has been explored.

    Conclusions:

    • Gluconobacter oxydans is a versatile microorganism with significant industrial and biotechnological potential.
    • Ongoing research in its biochemistry and molecular biology continues to unlock new applications.
    • Its efficient metabolic pathways make it a valuable tool for bioproduction.