Kinetics of the gluconic acid biosynthesis by strain Aspergillus niger 13-73.

The kinetics of gluconic acid biosynthesis of the strain Aspergillus niger 13-73 by submerged cultivation in a medium containing 26% glucose was investigated. The maximum amount of the product was obtained at minimum biomass growth. The yield of the product compared to the theoretical one was 95% and the fermentation period was 42 hours. The results regarding the limitation theory are discussed.