ENHANCED ALCOHOL YIELDS IN BATCH CULTURES OF CLOSTRIDIUM-ACETOBUTYLICUM USING A 3-ELECTRODE POTENTIOMETRIC SYSTEM WITH METHYL VIOLOGEN AS ELECTRON CARRIER

Citation
S. Peguin et al., ENHANCED ALCOHOL YIELDS IN BATCH CULTURES OF CLOSTRIDIUM-ACETOBUTYLICUM USING A 3-ELECTRODE POTENTIOMETRIC SYSTEM WITH METHYL VIOLOGEN AS ELECTRON CARRIER, Biotechnology letters, 16(3), 1994, pp. 269-274
Citations number
22
Categorie Soggetti
Biothechnology & Applied Migrobiology
Journal title
ISSN journal
01415492
Volume
16
Issue
3
Year of publication
1994
Pages
269 - 274
Database
ISI
SICI code
0141-5492(1994)16:3<269:EAYIBC>2.0.ZU;2-Y
Abstract
Batch cultures of Clostridium acetobutylicum at controlled pH values o f 5 and 5.5 were carried out in a three-electrode potentiometric syste m with methyl viologen (1 mM) as electron carrier. Although an irrever sible loss of methyl viologen at the electrode surface was observed, a significant increase in alcohol yield was obtained. In comparison to control fermentation with or without methyl viologen addition; the but anol yield improvements were respectively of 7 or 51% at pH 5, and 56 or 467% at pH 5.5.