Influence of hyperbaric oxygen tension on the metabolism ofCandida tropicalisandRhodococcus erythropolis

✍ Scribed by A. Kretschmer; F. Wagner

• Publisher: Springer
• Year: 1980
• Tongue: English
• Weight: 328 KB
• Volume: 10
• Category: Article
• ISSN: 1432-0614
• DOI: 10.1007/bf00504727

✦ Synopsis

The effect on metabolism of hyperbaric dissolved oxygen tension in batch cultures of Candicla tropicalis (Cast.) Berkhout and Rhodococcus erythropolls with three different carbon sources was studied in a 20-1 bioreactor under controlled conditions. The respiratory quotient was not significantly influenced by dissolved oxygen concentrations up to 40 mg/1 oxygen. Elementary cell composition and proportional contents of DNA, RNA, and protein were not markedly influenced by the various oxygen concentrations but depended mainly on the growth rate. It was found that the production of trehalose lipid by R. erythropolis was dependent on the growth rate which could be enhanced by raising the oxygen concentration. The specific activity of catalase was affected more by the nature of the carbon source than by increased oxygen concentration. On the basis of the experimental data the application of oxygen-enriched air for biotechnological processes is discussed.