Process for obtaining proteins from hemp

A method for obtaining proteins from hemp, the method comprising:

• A) providing hemp pressing remnants;
• B) prewashing the hemp pressing remnants with addition of water, with suspension of the hemp pressing remnants to form an aqueous suspension having a pH value <7 and phase separation to form an aqueous low-protein contaminant phase containing oil or oil-accompanying products and a high-protein prewashed phase;
• C) extracting proteins by alkalizing the high-protein prewashed phase with resuspension to form an aqueous suspension and separating phases of the aqueous suspension to form a shell fraction and an aqueous protein fraction;
• D) precipitating proteins with addition of a short-chain alcohol having fewer than four carbon atoms and with addition of an acid to shift the pH value into the acidic range and produce a clear phase and a heavy phase;
• and
• E) separating the clear and heavy phases into a low-protein phase and a high-protein phase.