Fate and role of ammonium ions during fermentation of citric acid by Aspergillus niger.

@article{Papagianni2005FateAR,
  title={Fate and role of ammonium ions during fermentation of citric acid by Aspergillus niger.},
  author={Maria Papagianni and Frank Wayman and Michael Mattey},
  journal={Applied and environmental microbiology},
  year={2005},
  volume={71 11},
  pages={7178-86}
}
Stoichiometric modeling of the early stages of the citric acid fermentation process by Aspergillus niger revealed that ammonium ions combine with a carbon-containing metabolite inside the cell, in a ratio 1:1, to form a nitrogen compound which is then excreted by the mycelium. High-performance liquid chromatography analysis identified glucosamine as the product of the relationship between glucose and ammonium during the early stages of the citric acid fermentation process. Slightly acidic… CONTINUE READING

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