<p>A modified whey protein powder having an improved solubility and comprising a partly heat-denatured whey protein and an undenatured whey protein; and a process for producing a modified whey protein powder having an improved solubility which comprises adding an undenatured whey protein to a solution of a partly heat-denatured whey protein and drying the resultant solution. From 0.2 to 10 parts by weight of the undenatured whey protein is used per part by weight of the partly heat-denatured whey protein. The obtained powder has a hydrophobicity of 50 FI/mg protein or above or an insolubility of 1 ml or below. A gel obtained from this powder has a good water retention, a high elasticity and a smooth texture, which makes it useful as a food material.</p>
