Viscosity prediction of starch hydrolysates from single point measurements

A mathematical model is presented which allows the accurate prediction of the viscosity-concentration-temperature relationship of starch hydrolysates. The model is valid in a dry substance range between 60% and 85% and in a temperature range between 20 degrees C and 80 degrees C. The only input the model requires is a single viscosity value at a defined concentration and temperature or the composition of the sample up to a degree of polymerization of 10. The model is based on the fact that the temperature dependence of the viscosity of a glass forming material,just above its glass transition temperature, can be descibed using the WLF kinetics. Hence, the viscosity is only dependent on the difference between the actual temperature and the glass transition temperature of each starch hydrolysate.