Rheological behaviour of dextran sulfate solutions

Farahnaky, A, Allahdad, Z, Aminlari, M, Majzoobi, M, Askari, H and Ramezani, R 2012, 'Rheological behaviour of dextran sulfate solutions', International Journal of Food Engineering, vol. 8, no. 3, pp. 1-10.


Document type: Journal Article
Collection: Journal Articles

Title Rheological behaviour of dextran sulfate solutions
Author(s) Farahnaky, A
Allahdad, Z
Aminlari, M
Majzoobi, M
Askari, H
Ramezani, R
Year 2012
Journal name International Journal of Food Engineering
Volume number 8
Issue number 3
Start page 1
End page 10
Total pages 10
Publisher Walter de Gruyter GmbH
Abstract The purpose of this research was to study the rheological behaviour of dextran sulfate solutions under different conditions. A PC controlled rotational viscometer with a cone and plate geometry equipped with a temperature controlled unit was used to measure apparent viscosity of dextran solutions at different temperatures (25, 40 and 60 oC) and concentrations (2, 5, 10 and 20%). Viscosity tests of dextran sulfate solutions were performed at a range of shear rates (8-230 1/s) and the rheological data were fitted using the Power Law equation to get consistency and flow behaviour indices. The results indicated that all dextran sulfate solutions showed Newtonian flow behaviour. The viscosity of dextran sulfate solutions was significantly affected by temperature, e.g. the viscosity of a 5% solution at 25, 40 and 60 oC was 16.7, 12.7 and 10.7 mPa.s, respectively.
Subject Food Processing
Keyword(s) Dextran Sulfate Solutions
Newtonian
Rheology
DOI - identifier 10.1515/1556-3758.2139
Copyright notice © 2012 De Gruyter
ISSN 1556-3758
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