English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The production of ketogluconic acids from glucose by fermentation methods has been of particular interest to this Bureau as a means of extending the industrial utilization of agricultural products. Our investigations have led to the development of a rapid and efficient process for the production of 5-ketogluconic acid from glucose by Acetobacter suboxydans, as heretofore reported (Stubbs et al., 1940). However, we have not found it possible to conduct a fermentation with our strain of A. suboxydans on any substrate in such a manner that 2-ketogluconic acid is the major product, as has been reported by Bernhauer and Knobloch (1938). These authors found that a certain strain of A. suboxdans gave predominantly 2-ketogluconic acid when cultivated on gluconic acid salts, although when cultivated on a glucose substrate, 5-ketogluconic acid was the principal product. A more recent publication by Bernhauer et al. (1940) indicates that such results are dependent on the particular strain of A. suboxydars used, for a second strain tested by them yielded 5-ketogluconic acid when cultivated either on glucose or gluconates. Although we have not succeeded in producing 2-ketogluconic acid with A. suboxydans, we have found that this product can be very efficiently obtained from glucose by the action of members of a different genus of bacteria. An organism which appeared as a contaminant during an A. suboxydans fer-

The Production of Gluconic Acid and 2-Keto-Gluconic Acid from Glucose by Species of Pseudomonas and Phytomonas