Related Experiment Video
Updated: Jan 4, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Modelling the flowing behaviour of dika kernel powder and soup as affected by moisture content, physical and
Beatrice M Fasogbon1, Kehinde A Taiwo2
11Department of Food Technology, Federal Institute of Industrial Research, Lagos, Nigeria.
Abstract:
Dika kernels are known for their mucilaginous consistency, but limited work has been reported about it. This study investigated the flowing characteristics (share stress and viscosity) of the dika kernel and its soup; and this was assessed at specific temperatures (30, 50, 70 and 90) °C by the use of a viscometer. All samples behaved as non-Newtonian fluids. The bulk, tapped and loose densities of the powdered samples were obtained to evaluate the Carr index, Hausner ratio and porosity. The viscosity and shear stress of the reconstituted powder and soup samples as a function of the shear rate were investigated (30-90 °C). Dika kernel at its natural moisture content has excellent flowing property (1.118 Hausner ratio, 10.566 Carr index and 20.300% porosity), but increase in moisture content decreased this ability. The viscosity of the soup (165.789-14,546.341 mPa s) was higher than the reconstituted dika (69.831-206.240 mPa s) at all temperature studied. Shear stress was temperature-dependent, and Bingham and Power-law models gave the best predictions of flow.
More Related Videos
11:38Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
Published on: April 19, 2018
08:42Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes
Published on: April 10, 2017
Related Concept Videos
Moisture Content and Bulking of Aggregate
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
Typical Model Studies
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model
Modeling and Similitude
Factors Affecting Dissolution: Particle Size and Effective Surface Area
Viscosity of Fluid