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Effect of temperature and pH on immobilized Zymomonas mobilis for continuous production of ethanol
Author(s) -
Bajpai Pramod K.,
Margaritis Argyrios
Publication year - 1986
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260280608
Subject(s) - zymomonas mobilis , ethanol , chemistry , fermentation , yield (engineering) , ethanol fuel , ethanol fermentation , food science , biochemistry , thermodynamics , physics
The effects of temperature and inlet pH of the medium on the ethanol productivity and activity of the immobilized Z. mobilis cells during continuous fermentation of glucose have been studied at various temperatures and pH. On changing the temperature from one steady state level to a new one, 6–8 h were required in order to fully experience the effect of a change in temperature; whereas 8–20 h were required on changing the pH. The optimum temperature of 37°C and a broad pH range of 4.4–6.0 were observed for maximum ethanol productivity and ethanol yield.