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TECHNOLOGY: Gluconic Acid

The UFZ / Vogelbusch GLUCONIC ACID Process

When it comes to gluconic acid technology Vogelbusch and Umweltforschungszentrum Leipzig/Halle (UFZ) are a winning team. The synergies between the in-house engineering know-how of Vogelbusch and the biotechnological research capabilities of UFZ have already led to a major breakthrough.

The partnership can carry out all stages of project work associated with the construction of gluconic acid plants, from the initial idea through to successful commissioning.

D-Gluconic acid results from the oxidation of D-glucose. The biological (fermentation) method is at present the method of preference for industrial production of gluconic acid. UFZ and VOGELBUSCH have come up with a highly efficient and competitive new fermentation process for industrial applications.

In the UFZ/VB process, Acetobacter methanolicus is used to catalyze the conversion of glucose into gluconic acid. The key advantages of using this facultatively methylotrophic microorganism are that:

  • Gluconic acid is a metabolic dead-end product
  • At high concentrations glucose is not assimilated and consumed for growth, and consequently the maximum theoretical yield coefficient can be achieved
  • Methanol, a cheap raw material, can be used to produce the catalyst

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