Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
626315 | Desalination | 2009 | 5 Pages |
Abstract
The separation of lactobionic acid (LBA), a product of a biotechnological process catalyzed by the enzymes glucose-fructose oxidoreductase and glucono-δ-lactonase of the bacteria Zymomonas mobilis, was studied using ion selective membranes in electrodialysis (ED). The recovery of LBA, present in a solution with a concentration of 20 g L-1, was 38.7% in 250 min of testing for an electrical potential difference of 15 V. When compared with a solution containing all the components present in the bioconversion (lactose, fructose, and sorbitol), the recovery was inhibited by the presence of non-ionic substances and the LBA recovery efficiency decreased to 16.2%. The same behavior was observed when a Z. mobilis bioconversion medium was used, with a recovery of 14%. Despite the low recovery efficiency the high specificity in relation to the other bioconversion components makes this process suited for LBA production.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
F.A. Peretti, M.M. Silveira, M. Zeni,