Instrumental analyses were used to evaluate the rheological properties of ice cream mixes. using 4% whey protein isolate (WPI) or 4% inulin as the fat replacement ingredient.
The composition,consistency coefficient,hardness were measured. No effect of WPI or inulin. Compared with regular ice cream, WPI changed rheological properties, resulting in significantly higher apparent viscosities, consistency indices and greater deviations from Newtonian flow. In addition, both hardness and melting resistance. significantly increased by using WPI in reduced-fat and low-fat ice creams. Inulin also increased the hardness in comparison to regular ice cream, but the products made with inulin.