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Isolation of Small Starch Granules and Determination of Their Fat Mimic Characteristics

¹Whistler Center for Carbohydrate Research, Purdue University, W. Lafayette, IN 47907. ²Department of Foods and Nutrition, Purdue University, W. Lafayette, IN 47907. ³Corresponding author. E-mail: danielj@cfs.purdue.edu. Phone: 765-494-8247.

Small starch granules from wheat and amaranth were isolated and examined by light microscopy (wheat), scanning electron microscopy (wheat and amaranth), and rapid viscosity (RVA) analysis. The isolated wheat and amaranth starches were incorporated into reduced-fat frozen dessert mixes (2%, w/w) and the frozen desserts were characterized by sensory analysis for smoothness, creaminess, and preference. The results of the sensory analysis suggest that up to 50% of the fat in a frozen dessert may be replaced when substituted by these starches at the 2% level (w/w).