Ethanol production from fermentation of sago starch

Dayang Salwani, bt Awang Adeni. (2002) Ethanol production from fermentation of sago starch. Masters thesis, Universiti Malaysia Sarawak, (UNIMAS).

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Abstract

Hydrolyzed sago starch (HSS) which acts as a substrate for the production of the ethanol was studied in a fermentation process by Zymomonas mobilis AT 10988. The study was carried out in three stages, namely, enzymatically hydrolysis, batch and continuous fermentation studies. From the hydrolysis studies, a 20% (w/v) sago starch concentration resulted in the highest conversion (98.64%) to reducing sugar compared to other starch concentrations. Optimum enzyme concentration for hydrolysis were 0.5 ul/g and 0.6 ul/g for Termamyl 120L and Dextrozyme. Liquefacstion and saccharification process was conduced at pH 6.5 and pH4.5 respectively, with the incubation period for liquefaction was 2 hours. Studies using batch culture system employing various concentrations of commercial glucose showed that glucose with 10% concentration was able to produce 35.70% g/L ethanol with fermentation efficiency of 86.95%, better than other glucose concentrations (15%, 20% and 25%).

Item Type: Thesis (Masters)
Additional Information: Thesis (M.Sc.) - Universiti Malaysia Sarawak, 2002.
Uncontrolled Keywords: Fermentation, Sago starch, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, Postgraduate, research, Universiti Malaysia Sarawak
Subjects: Q Science > QK Botany
S Agriculture > SB Plant culture
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Saman
Date Deposited: 05 May 2017 07:22
Last Modified: 05 May 2017 07:22
URI: http://ir.unimas.my/id/eprint/16145

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