Rheological studies on Streptomyces fradiae ScF-5 in submerged fermentation.

Ghildyal, N. P. and Thakur, M. S. and Srikanta, S. and Jaleel, S. A. and Prapulla, S. G. and Prasad, M. S. and Devi, P. N. and Lonsane, B. K. (1987) Rheological studies on Streptomyces fradiae ScF-5 in submerged fermentation. Journal of Chemical Technology and Biotechnology, 38. pp. 221-234.

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Abstract

Studies on the rheology of Streptomyces fradiae ScF-5 in a lo-dm3 submerged fermenter for the production of intracellular glucose isomerase revealed that the apparent viscosity of the broth increased with increase in cell density up to 24 h and then declined while the density of the broth remained constant. The plot of shear stress versus shear rate at various fermentation periods showed the applicability of the Casson model. The yield stress and consistency index were found to increase gradually then decrease subsequently. In contrast, the flow behaviour index was less than unity and remained constant throughout the fermentation. The results contrast with the findings of other workers on the Newtonian and non- Newtonian character of fermentation broths and the applicability of the power law model to such systems.

Item Type:	Article
Uncontrolled Keywords:	Rheology; glucose isomerase; Streptomyces fradiae, Casson model
Subjects:	600 Technology > 05 Chemical engineering > 04 Fermentation Technology
Divisions:	Fermentation Technology and Bioengineering
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	26 May 2016 07:06
Last Modified:	26 May 2016 07:06
URI:	http://ir.cftri.res.in/id/eprint/5249

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