Abstract
Recirculation of oxygen during submerged citric acid fermentation of ferrocyanide-treated beet molasses by Aspergillus niger was successful. Results obtained in 36-liter glass tower fermenters showed that neither rate of production nor total yield of citric acid was affected. No treatment of the recirculated gas other than carbon dioxide removal was required. At both low and high oxygen flow rates, increased oxygen pressure (up to 1.7 atm) markedly increased initial rate of production and total yield of citric acid. Oxygen pressure above 1.7 atm decreased citric acid yield. Within the limits tested, the effect of oxygen pressure was independent of total pressure.
Publisher
Canadian Science Publishing
Subject
Genetics,Molecular Biology,Applied Microbiology and Biotechnology,General Medicine,Immunology,Microbiology
Cited by
34 articles.
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