Under the contemporary technologies, modified starches will be used in food products, and saccharose will be replaced with other sweeteners. Thus, it seems indispensable to conduct model studies on preparations of modified starches containing saccharose and its substitutes. The objective of this paper was to assess the effect of saccharose and its substitutes on some selected rheological properties of starch preparations. The investigation materials were commercial, modified potato starches: oxidized gelating starch (E1404), distarch phosphate (E1412), acetylated distarch phosphate (E1414), and acetylated distarch adipate (E1422) produced by the ‘Wielkopolskie Przedsiebiorstwo Przemysłu Ziemniaczanego S.A.’ Joint Stock Co. in Luboń, as well as saccharose, sorbitol, acesulfame K, and aspartame. The above indicated starches were analyzed with regard to the water binding capacity and water solubility at 25 °C and 60 °C. Furthermore, flow curves were determined using a Rheolab MC1 rheometer. For the purpose of determining those flow curves, 5 % starch gels were prepared in water, saccharose solution, or in solutions of the saccharose substitutes. The saccharose concentration was chosen so as to comply with the concentration suggested by manufacturers of blancmanges, and the other solutions of sweeteners were prepared to make their sweetness comparable to the sweetness of the saccharaose solution. The ready made gels were immediately placed in the measuring element of rotational rheometer and the measurements were taken at a temperature of 25 ± 0.5 °C, 40 ± 0.5 °C, and 60 ± 0.5 °C. Flow curves were drawn up and described using a Herschel-Bulkley model.