The present invention describes a method of reducing the enzymatic digestion rates of starch granules in food, particularly rice-based food. The method is carried out by encapsulating the starch granules with a reaction compound formed by the chemical reaction of at least a crosslinkable polysaccharide that has been pre-mixed with the ingredients for food production, and at least a crosslinking agent. The invention also relates to a process of preparing food products by incorporating the method of the present invention and food products produced by the present method.