The present invention relates to a texturized whey protein composition having enhanced functional properties, including, for example, enhanced viscosifying properties, enhanced emulsifying properties, and/or enhanced gelling properties. In one embodiment, the texturized whey protein composition is a supercritical fluid extrusion product derived from whey protein. The present invention also relates to a process for preparing the texturized whey protein composition, where the process involves a supercritical fluid extrusion process. The present invention further relates to various products containing the texturized whey protein composition.