Abstract
Corn starch nanoparticles (SNPs) were prepared by ultrasonication of starch for 40 min at an amplitude of 40%, which modified some properties of starch so that it could be used as a functional ingredient in food products. The cereal SNPs were characterized on the basis of their morphology, particle size, crystallinity, pasting and functional properties. The SNPs were globular in shape as revealed by TEM. There was a decrease in the crystallanity of SNPs, whereas the functional properties were enhanced in SNPs as compared to raw starch. SNPs had a less paste viscosity as compared to raw starch. Salad dressing was prepared by using SNPs as a fat replacer. The prepared salad dressing was examined for colour, viscosity, and sensory attributes. Overall 60% of fat was replaced using corn SNPs without compromising its quality characteristics.
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