Quantification of power consumption and oxygen transfer characteristics of a stirred miniature bioreactor for predictive fermentation scale-up

Biotechnology and Bioengineering
N K GillG J Lye

Abstract

Miniature parallel bioreactors are becoming increasingly important as tools to facilitate rapid bioprocess design. Once the most promising strain and culture conditions have been identified a suitable scale-up basis needs to be established in order that the cell growth rates and product yields achieved in small scale optimization studies are maintained at larger scales. Recently we have reported on the design of a miniature stirred bioreactor system capable of parallel operation [Gill et al. (2008); Biochem Eng J 39:164-176]. In order to enable the predictive scale-up of miniature bioreactor results the current study describes a more detailed investigation of the bioreactor mixing and oxygen mass transfer characteristics and the creation of predictive engineering correlations useful for scale-up studies. A Power number of 3.5 for the miniature turbine impeller was first established based on experimental ungassed power consumption measurements. The variation of the measured gassed to ungassed power ratio, P(g)/P(ug), was then shown to be adequately predicted by existing correlations proposed by Cui et al. [Cui et al. (1996); Chem Eng Sci 51:2631-2636] and Mockel et al. [Mockel et al. (1990); Acta Biotechnol 10:215-224]. A correl...Continue Reading

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Citations

Apr 15, 2014·Microbial Cell Factories·Martin KunzeJochen Büchs
Aug 6, 2014·Nature Communications·Seok Hyun ParkSang Yup Lee
Jul 19, 2013·Biotechnology and Bioengineering·Sally HassanColin Thomas
Dec 31, 2011·Journal of Biotechnology·R Takors
Feb 27, 2010·Current Opinion in Biotechnology·Peter Neubauer, Stefan Junne
Jun 19, 2013·Biotechnology and Bioengineering·Rachel BareitherDavid Pollard
May 27, 2010·Biotechnology and Bioengineering·Marco P C MarquesPedro Fernandes
Feb 11, 2018·Biotechnology and Bioengineering·Igor VassilevJens O Krömer
Jun 14, 2019·3 Biotech·Daniel Pleissner
Sep 10, 2019·Frontiers in Bioengineering and Biotechnology·Magdalena PappenreiterGerald Striedner

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