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Fuel alcohol biosynthesis by Zymomonas anaerobia : Optimization studies
Author(s) -
Kosaric N.,
Ong S. L.,
Duvnjak Z.
Publication year - 1982
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.260240312
Subject(s) - zymomonas mobilis , ethanol , chemistry , alcohol , yield (engineering) , ethanol fuel , arrhenius equation , nutrient , food science , growth rate , biochemistry , activation energy , organic chemistry , materials science , mathematics , metallurgy , geometry
The optimum operating conditions for growth and ethanol production of Zymomonas anaerobia ATCC 29501 were established. The optimum pH range and temperature were found to be 5.0–6.0 and 35°C, respectively. Based on the results obtained from the temperature optimization study, an Arrhenius‐type temperature relationship for the specific growth rate was developed. The growth and ethanol production of this microbe also have been optimized in terms of concentrations of glucose, essential nutrients, and minerals. With optimum medium and operating conditions, an ethanol concentration of 96 g/L was obtained in 23 h. Both growth and ethanol yield coefficients in dependence on initial glucose concentrations were determined.