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Effect of Sodium Hydroxide Concentration on Kinetic Parameters during Gelatinisation

Osoka, E.C. and Kamalu, Ikenna C. (2010) Effect of Sodium Hydroxide Concentration on Kinetic Parameters during Gelatinisation. Journal of Emerging Trends in Engineering and Applied Sciences, 1 (1). pp. 5-8.

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Viscosity and fluidity profiles of a starch solution with a water-starch ratio of 2.0w/w during gelatinisation under strong alkali conditions, in a Co-axial cylinder viscometer for 17g/dm3 - 23g/dm3 concentrations of #aOH solution was studied. This work models the variation of the equilibrium viscosity, equilibrium fluidity, gelatinization rate, gelatinization constant and delay time with Sodium hydroxide concentration. The equilibrium fluidity and delay time were fit to third and second order polynomials respectively, while the gelatinization rate and equilibrium viscosity fit to first and second order Gaussian models respectively and the gelatinization constant to a rational function with R2 > 0.99 in all cases. These parameters and models can be used to simulate starch gelatinization beyond the range of experimental data.

Item Type: Article
Uncontrolled Keywords: starch, gelatinisation, viscosity, fluidity, rheological, equilibrium
Subjects: T Technology > T Technology (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 08 Feb 2017 13:59
Last Modified: 08 Feb 2017 13:59

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