The objective of the research study was to determine those properties that are crucial for the structure and water-binding in fat-in-water type emulsions after incorporation into a starch system. The presence of fat in starch-water dispersion has a significant impact on the process of starch gelatinization and, consequently, on the intensity and dynamics of molecular cross-linking processes in the emulsions under research. The differences in the structure and chemical composition of the two fat types determine the rheological properties of the systems studied. This causes the stiffness and equilibrium dissipativeness of spatial starch-fat-water systems to diversify depending on the type of fat added. Nuclear Magnetic Resonance (NMR) investigations confirm this fact. The presence of fats in the starch-water system causes the water activity to decrease.
water activity, emulsions, NMR, rheology, starch