Embodiments of the process for isolating proteins from a defatted mealcomprise extracting the defatted meal withan acidic solvent at a pH of between 2 and 6 to obtain a mixture of treatedmeal and a first solution of proteins. The processfurther comprises extracting the treated meal with an alkaline solvent at a pHof between 9 and 12.5 to obtain a mixture of mealresidue and a second solution of proteins. The meal residue is separated fromthe second solution of proteins, and the proteins areseparated from the second solution of proteins to obtain one or more proteinproducts.
