Continuous bioethanol production from fermentation of hydrolysed sago starch using the 'Ishizaki Process'

Lenny, Niyong. (2011) Continuous bioethanol production from fermentation of hydrolysed sago starch using the 'Ishizaki Process'. Masters thesis, Universiti Malaysia Sarawak, (UNIMAS).

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Abstract

Continous fermentation of hydrolysed sago starch based on the 'Ishizaki process' was studied. Sago starch (20% DS) were hydrolyzed by the enzymes termamyl - 120L and dextrozyme to yield fermentable sugars at 97.6+0.6%. At a larger scale (50L), a reduction of hydrolysis yield to 62.5% was observed. Batch ethanol fermentations using saccharomyces cerevisiae CSI-1 was studied, employing commercial glucose and various nitrogen sources (yeast extract, mieki and corn steep liquor). It was observed that yeast extract exhibited the highest fermentation efficiency at 98.4=0.2% compared to CSL (4% v/v) and Mieki (2% v/v) at 97.02= 1.05% and 93.0 = 1.1%, respectively.

Item Type: Thesis (Masters)
Additional Information: Thesis (M.Sc.) -- Universiti Malaysia Sarawak, 2011.
Uncontrolled Keywords: sago starch, continuous ethanol fermentation, yeast extract, mieki, corn steep liquor, Succhuromyces cerevisiae CSI-1,Fermentation,unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, Postgraduate, research, Universiti Malaysia Sarawak
Subjects: S Agriculture > SB Plant culture
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 03 May 2016 01:32
Last Modified: 22 Oct 2021 04:06
URI: http://ir.unimas.my/id/eprint/11814

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