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Thursday, 16 February 2017

Aerobic fermentation of saccharomeyes cerevisae in a miniature bioreactor made of low cost poly(methylmethacrylate) (PMMA) and Poly(Dimethylsiloxane) (PDMS) Polymers


 Sains Malaysiana, Volume 45, Issue 6, 2016, pp. 969-976

Aerobic fermentation of saccharomeyes cerevisae in a miniature bioreactor made of low cost poly(methylmethacrylate) (PMMA) and Poly(Dimethylsiloxane) (PDMS) Polymers

 Alam M.N.H.Z. * 1 ,2Halimoon H. 3Hussain A.R. 4Kouzani A. 1
Abstract : In this paper, a minibioreactor platform made of low cost polymers is presented. The minibioreactor prototype was designed as an alternative solution for carrying out microbial fermentation experiments in laboratory. The minibioreactor prototype has a working volume of 1.5 mL and was fabricated from poly(methylmethacrylate) (PMMA) and poly(dimethylsiloxane) (PDMS) polymers. Cell density was measured online whilst agitation rates and the temperature of the reactor content can be tightly controlled to desired set-point values. As proof-of-concept, various S. cerevisae fermentation experiments were conducted. In every experiment, the minibioreactor operated stably for the entire length of operation which was nearly 40 h with very minimal volume loss i.e. about 2.8 μ·h at 37°C. The minibioreactor has the maximum oxygen transfer rate (OTR) of 16.6 mmol·L·h under the agitation rate of 300 rpm. Under these conditions, cell specific growth rate as high as 0.291 h was obtained. The experimental data in the minibioreactor operation was also reproducible using shake flask where similar growth profiles were attained under a similar growth conditions.
Keywords : Bioreactor,Miniature bioreactors,Online UV detection,Scale down,Yeast fermentation
Subject Area : General

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