Summary
The role and importance of the redox potential phenomena in submerged citric acid production are discussed. The redox potential of the fermentation broth is the result of oxydo-reduction processes where the metabolic activity of the microorganism Aspergillus niger plays the most significant role. The course of the redox curve for a good yielding citric acid production is presented and interpreted. The experiments of submerged citric acid production were carried out on beet molasses treated with potassium hexacyanoferrate and inoculated with A. niger spores.
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References
Cimerman A, Škafar S, Johanides V (1980) Yu Pat 35,459
Clark DS, Ito K, Thymchuk P (1965) Effect of K-ferrocyanide on the Chem. Composition of Molasses Mash Used in Citric Acid Fermentation Biotechnol Bioeng 7:269–278
Hewitt LF (1950) Oxidation-Reduction Potentials in Bacteriology and Biochemistry. ES Livingstone Ltd, Edinburg
Ishizaki A, Subai H, Hirose Y (1974) Basic Aspects of Electrode Potential Change in Submerged Fermentation. Agr Biol Chem 38:2399–2406
Jacob HE (1970) Redox Potential, Methods in Microbiology vol. 2/IV. Accademic Press, London New York
Jernejc K, Cimerman A, Perdih A (1982) Citric Acid Production in Chemically Defined Media by Aspergillus niger. Eur J Appl Microbiol Biotechnol 14:29–33
Kjaergaard L (1977) The redox Potential: Its Use and Control in Biotechnology. Adv Biochem Eng 7:131–150
Lengyel ZL, Nyiri L (1965) An Automatic Aeration Control System for Biosynthetic processes. Biotechnol Bioeng 7:91–100
Matkovics B, Kovatcs E (1957) Untersuchung der Zitronensäure Production und der Potentialveränderung in Oberflächen und Tiefkulturen. Naturwissenschaften 44:447–451
Sukharevich VI, Yakovleva EP, Tsyganov VA, Svezova NN (1970) The Effect of Aeration and Redox Potential of the Medium on Biosynthesis of Levorin A and B. Mikrobiologiya 39:981–985
Tengerdy RP (1961) Redox Potential Changes in the 2-keto-1 gluconic Acid Fermentation — II. Relationship between Redox Potential and Product Formation. J Biochem Microbiol Technol Eng 3:255–260
Wimpenny JWT (1969) The Effect of Eh (redox potential) on regulatory processes in facultative anaerobes. Biotechnol Bioeng 11(4):623–629
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Berovič, M., Cimerman, A. Redox potential in submerged citric acid fermentation. European J. Appl. Microbiol. Biotechnol. 16, 185–188 (1982). https://doi.org/10.1007/BF00505830
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DOI: https://doi.org/10.1007/BF00505830