International Journal of Applied Science and Engineering
Published by Chaoyang University of Technology

Levente L. Diosady* and Taya Puzanov

Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, Ontario, Canada M5S 3E5

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In the continuous membrane fermentation of Lactobacillus rhamnosus at biomass concentrations above 100 g/L the viscosity of the system increased sharply resulting in decreased permeate flux. At cell densities higher than 108 g/L a slight deviation from Newtonian behaviour was observed. Steady state was achieved and main kinetic characteristics remained constant for around 100 hours when the biomass concentration was maintained at a constant level by continuous bleeding.

Keywords: biomass bleeding; membrane fermentation; Lactobacillus rhamnosus; viscosity; rheology.

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Accepted: 2005-03-01
Available Online: 0205-04-03

Cite this article:

Diosady, L.-L., Puzanov, T. 2005. Membrane fermentation of lactic acid. International Journal of Applied Science and Engineering, 3, 19–25.