Optimization of Single-step Bioconversion Process using Taguchi’s method for the production of Multiple Valuable Fermentation-products

Azmi, Azliin Suhaida and Ngoh, Gek Cheng and Mel, Maizirwan (2010) Optimization of Single-step Bioconversion Process using Taguchi’s method for the production of Multiple Valuable Fermentation-products. In: The 13th Asia Pacific Confederation of Chemical Engineering Congress, 5-8 October 2010, Taipei, Taiwan.

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Abstract

The significant of fermentation parameters for multiple valuable fermentation-products from co-culture fermentation of raw unhydrolyzed cassava starch were determined using Taguchi’s methodology in an orthogonal array of L8 using Design Expert v8.0.1. Seven factors were varied at two levels for each factor. The significant factors for the production of multiple valuable fermentation-products, namely ethanol, glycerol and lactic acids, were determined. The result shown that the optimum level for two nutrients which were NPK and urea were at 0.09% (w/w) and 0.8% (w/w), respectively. The optimum concentration of the dry starter of ragi tapai was 10% (w/w) which was best subsequent co-cultured at 3 h later with 10% (w/w) of Saccharomyces cerevisiae. The process was best operated at 30oC of fermentation temperature with 100 rpm of agitation speed.

Item Type:	Conference or Workshop Item (Invited Papers)
Additional Information:	4085/4987
Uncontrolled Keywords:	Ethanol, cassava, glycerol, lactic acid, single-step bioconversion, starch, Taguchi’s methodology
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering T Technology > TP Chemical technology > TP200 Manufacture and use of chemicals T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr Maizirwan Mel
Date Deposited:	25 Nov 2011 13:29
Last Modified:	13 Jun 2017 10:57
URI:	http://irep.iium.edu.my/id/eprint/4987

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