Ethanol Production Kinetics by a Thermo-Tolerant Mutant of Saccharomyces Cerevisiae from Starch Industry Waste (Hydrol)

Farman Ali Shah; Shaheen Aziz; Hafeez ur Rahman Memon; M.I. Rajoka

doi:10.21743/

Ethanol Production Kinetics by a Thermo-Tolerant Mutant of Saccharomyces Cerevisiae from Starch Industry Waste (Hydrol)

Authors

Farman Ali Shah Department of Chemical Engineering, Mehran University of Engineering & Technology, Jamshoro, Sindh, Pakistan Author
Shaheen Aziz Department of Chemical Engineering, Mehran University of Engineering & Technology, Jamshoro, Sindh, Pakistan Author
Hafeez ur Rahman Memon Institute of Petroleum and Natural Gas Engineering, Mehran University of Engineering & Technology, Jamshoro, Sindh, Pakistan Author
M.I. Rajoka National Institute for Biotechnology & Genetic Engineering, P.O. Box 577, Faisalabad, Pakistan Author

DOI:

https://doi.org/10.21743/

Keywords:

Corn steep liquor; Hydrol; Temperature; Specific productivity; Product yield

Abstract

A thermo-tolerant and deoxyglucose-resistant mutant of Saccharomyces cerevisiae was developed and employed to convert them to fuel ethanol in a 150 litre fermenter. Maximum ethanol production was achieved when fermentation of dextrozyme- treated hydrol was carried out for about 36 hours under optimized fermenting conditions. The maximum specific ethanol production rate (qP), and overall ethanol yield (YP/S) were found to be 2.82 g L^-1 h^-1 and 0.49 g/g respectively. Determination of activation energy for cell growth (Ea= 20.8 kJ/mol) and death (Ed = 19.1 kJ/mol) and product formation and inactivation (EP=35.8 kJ/mol and Edp = 33.5 kJ/mol) revealed the thermo-stability of the organism for up to 47°C

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Published

2010-06-01

Issue

Vol. 11 No. 1 (2010): Pakistan Journal of Analytical & Environmental Chemistry

Section

Research Articles

License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

How to Cite

(1)

Ethanol Production Kinetics by a Thermo-Tolerant Mutant of Saccharomyces Cerevisiae from Starch Industry Waste (Hydrol). Pak. J. Anal. Environ. Chem. 2010, 11 (1), 16-21. https://doi.org/10.21743/.