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Lactate production in an integrated process configuration: reducing cell adsorption by shielding of adsorbent

Senthuran, A; Senthuran, V; Hatti-Kaul, Rajni LU and Mattiasson, Bo LU (2004) In Applied Microbiology and Biotechnology 65(6). p.658-663
Abstract
The problem of binding of microbial cells to an adsorbent matrix during in situ recovery of bioproducts from a fermentation broth has been addressed by shielding the adsorbent with a thin layer of a non-ionic polymer. Extractive bioconversion of lactic acid by integrating ion-exchange adsorption with the fermentation stage was studied. The effect of coating of the ion-exchanger with agarose on product recovery and cell adsorption was evaluated. Extractive fermentation with both uncoated and coated resin resulted in an increase in reactor productivity as compared to the normal fermentation. The free cell density in the system with agarose-coated beads was similar to that in control fermentation, but was significantly lower in the system... (More)
The problem of binding of microbial cells to an adsorbent matrix during in situ recovery of bioproducts from a fermentation broth has been addressed by shielding the adsorbent with a thin layer of a non-ionic polymer. Extractive bioconversion of lactic acid by integrating ion-exchange adsorption with the fermentation stage was studied. The effect of coating of the ion-exchanger with agarose on product recovery and cell adsorption was evaluated. Extractive fermentation with both uncoated and coated resin resulted in an increase in reactor productivity as compared to the normal fermentation. The free cell density in the system with agarose-coated beads was similar to that in control fermentation, but was significantly lower in the system with the uncoated ion-exchanger. Electron microscopic scanning of the bead surface after passage of the fermentation broth showed cells attached to the native adsorbent but not to the coated one. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Microbiology and Biotechnology
volume
65
issue
6
pages
658 - 663
publisher
Springer
external identifiers
  • pmid:15179528
  • wos:000224684000003
  • scopus:8644242930
ISSN
1432-0614
DOI
10.1007/s00253-004-1638-y
language
English
LU publication?
yes
id
3bdf865d-5514-4cb4-a1d5-93f850490f1d (old id 140546)
date added to LUP
2007-07-03 08:40:51
date last changed
2017-01-01 07:18:47
@article{3bdf865d-5514-4cb4-a1d5-93f850490f1d,
  abstract     = {The problem of binding of microbial cells to an adsorbent matrix during in situ recovery of bioproducts from a fermentation broth has been addressed by shielding the adsorbent with a thin layer of a non-ionic polymer. Extractive bioconversion of lactic acid by integrating ion-exchange adsorption with the fermentation stage was studied. The effect of coating of the ion-exchanger with agarose on product recovery and cell adsorption was evaluated. Extractive fermentation with both uncoated and coated resin resulted in an increase in reactor productivity as compared to the normal fermentation. The free cell density in the system with agarose-coated beads was similar to that in control fermentation, but was significantly lower in the system with the uncoated ion-exchanger. Electron microscopic scanning of the bead surface after passage of the fermentation broth showed cells attached to the native adsorbent but not to the coated one.},
  author       = {Senthuran, A and Senthuran, V and Hatti-Kaul, Rajni and Mattiasson, Bo},
  issn         = {1432-0614},
  language     = {eng},
  number       = {6},
  pages        = {658--663},
  publisher    = {Springer},
  series       = {Applied Microbiology and Biotechnology},
  title        = {Lactate production in an integrated process configuration: reducing cell adsorption by shielding of adsorbent},
  url          = {http://dx.doi.org/10.1007/s00253-004-1638-y},
  volume       = {65},
  year         = {2004},
}