Abstract
We studied the rheological behaviour of apricot jam (Prunus armeniaca) made with sucrose, and jams of bilberry (Vaccinium myrtillus) and rose hips (Rosa canina ) prepared for dietary usé with fructose in a temperature range of 5-65 °C. All three jams presented thixotropy, and the decrease in stress with time fit first order kinetics. The flow behaviour can be described by power equa tions and the Herschel-Bulkey équation. The relation between temperature and apparent viscosity was described with the Arrhenius-Guzman équation.
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