Soy protein products which can be reconstituted to provide an aqueous acidic solution having a preferred level of clarity are produced by extracting a soy protein source with an aqueous calcium chloride solution to cause solubilization of soy protein from the protein source and separating the resulting aqueous soy protein solution from residual soy protein source. Either, within about 20 minutes of separation step, the aqueous soy protein solution is diluted to a conductivity of less than about 90 mS and the pH of the aqueous soy protein solution is adjusted to about 1.5 to about 4.4 to produce an acidified soy protein solution having an absorbance of visible light at 600 nm (A600) of less than about 0.055, or, within about 40 minutes of the separation step, the aqueous soy protein solution is diluted to a conductivity of less than about 90 mS, the pH of the aqueous soy protein solution is adjusted to about 1.5 to about 4.4, the acidified soy protein solution is heat treated at a temperature of about 70° to about 160°C for about 10 seconds to about 60 minutes to produce an acidified soy protein solution having an absorbance of visible light at 600 nm (A600) of less than about 0.055. The resulting acidified soy protein solution may be directly dried or further processed by concentration and diafiltration. Each of the steps of the process preferably is effected at a temperature of about 50° to about 60°C.La présente invention a trait à des produits de protéine de soja qui peuvent être reconstitués de manière à obtenir une solution acide aqueuse dotée dun niveau préféré de pureté, lesquels produits de protéine de soja sont produits par extraction dune source de protéine de soja avec une solution aqueuse de chlorure de calcium de manière à entraîner la solubilisation de la protéine de soja à partir de la source de protéine et par séparation de la solution aqueuse de protéine de soja résultante à partir de la source de protéine de soja résiduelle. Dans un délai denviron
