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2020 Volume 11 Issue 3

A Novel Equation Correlating the Rheological Properties of Some Commercial Tomato Ketchups


I. Stanciu, A. Messaâdi, O. Díez-Sales, S.S. Al-Jameel, E. Mliki, J.V. Herráez, N. Ouerfelli
Abstract

This article is focused on evaluating the rheological properties of tomato ketchup. The purpose of the paper was to show the importance of knowledge about the rheological properties of ketchup and to find new more adequate equations of the temperature-viscosity dependence. All measurements were performed under the same temperature conditions at approximately 25 °C and shear velocities between 5.46 and 700.41 s-1. Ketchup is a non-Newtonian material, so the apparent viscosity was measured.

We found out that the apparent viscosity decreased exponentially with increasing temperature, so the Arrhenius equation is valid. Ketchup fluidity increases exponentially with temperature, which leads us to propose an original logarithmic expression correlating the shear stress and the square root of shear rate with only two adjustable parameters with some physical significance. The model is compared with some previous ones showing that the calculated rheological characteristics can be used to design the technological equipment or containers for the distribution of the product to the end-users. A comparison between parameter values of different fluids can contribute to the knowledge of the flow behavior is also important for the development of new recipes and the direct qualitative evaluation of the products.


How to cite this article
Stanciu I, Messaâdi A, Díez-Sales O, Al-Jameel S, Mliki E, Herráez J et al. A Novel Equation Correlating the Rheological Properties of Some Commercial Tomato Ketchups. J Biochem Technol 2020;11(3):102-14
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J BIOCHEM TECH
J BIOCHEM TECH
Journal of Biochemical Technology is a peer reviewed International Journal published by the Sevas Publishing on behalf of the Biochemical Technology Society, a Registered Charity Organization from India

AREA OF INTEREST
AREA OF INTEREST
Areas of high interest, cover new advances in enzymatic and protein mechanims; applied molecular genetics and biotechnology; genomics and proteomics; metabolic; medical, environmental, food and agro biotechnology.

FOCUS AND SCOPE
FOCUS AND SCOPE
Journal Of Biochemical Technology” Provides A Medium For The Rapid Publication Of Full-Length Articles, Mini-Reviews Of New And Emerging Products And Short Communications On All Aspects Of ...

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