Advertisement

Bioprocess and Biosystems Engineering

, Volume 25, Issue 3, pp 179–181 | Cite as

Comparison of fumaric acid production by Rhizopus oryzae using different neutralizing agents

  •  Y. Zhou
  •  J. Du
  •  G. Tsao

Abstract.

Fumaric acid fermentation in a 10-L bubble column fermenter using different neutralizing agents [CaCO3, Ca(OH)2, NaHCO3] by Rhizopus oryzae ATCC 20344 was examined. It was found that in the fermentation using CaCO3 as the neutralizing agent the highest fumaric acid weight yield and volumetric productivity were obtained, 53.4% and 1.03 g/L×h–1 respectively. In the NaHCO3 case, the fumaric acid weight yield and volumetric productivity were 33.7% and 0.69 g/L×h–1, respectively, much lower than the CaCO3 case. However, the NaHCO3 alternative has advantages of cell reuse and simple downstream processing because of the high solubility of sodium fumarate. These advantages may offset the disadvantages of using NaHCO3 as the neutralizing agent, and the overall fumaric acid weight yield and volumetric productivity will increase.

Keywords

Sodium Fermentation CaCO3 NaHCO3 Acid Production 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  •  Y. Zhou
    • 1
  •  J. Du
    • 1
  •  G. Tsao
    • 1
  1. 1.Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, IN 47907, USA

Personalised recommendations