The rheological behaviour of untreated and pasteurized white carrot juice was modelled to investigate the influence of
temperature on viscosity and its fluid type. The research was conducted using a rotational viscometer at shear rates ranging from
1 to 100 s-1 and temperatures between 10 and 60qC. The rheological behaviour of untreated white carrot juice was well described
by the Newtonian model while the pasteurized juice showed a pseudoplastic behaviour and was satisfactorily fitted to Ostwald-de
Waele model. The Arrhenius equation adequately described the effect of temperature on the viscosity. The activation energies
were depended on kind of fluid and were 15.41 and 5.90 kJ/mol for untreated and pasteurized white carrot juice, respectively.