Method for obtaining valuable products, in particular proteins, from a native mixture of materials

A method for obtaining proteins from native mixtures of materials, comprising the steps of:

• A):
• providing a native mixture of materials from seeds having hard fragmentable hulls;
• B):
• comminuting the mixture of materials, wherein the hulls are disintegrated;
• C):
• dispersing the comminuted mixture of materials with water, wherein per one part of comminuted mixture of materials, up to a maximum of 8 parts of water are added, and wherein the water and the comminuted mixture of materials are stirred such that a free-flowing pulp is yielded;
• D):
• adjusting a pH of the pulp of step C) to an alkaline range pH>9.5;
• E):
• adding a water-soluble organic solvent alcohol to the pulp subsequently to adjusting the pH in step D) such that an alcohol concentration of the pulp is less than 30%;
• F):
• separating off a solids phase from the pulp, which has a predominant fraction of the hulls, to form a hull-free pulp;
• G):
• shifting the pH of the hull-free pulp from step F) to a pH range of pH=4.5 to pH=7.2;
• and
• H):
• separating the hull-free pulp of step G) into a plurality of phases, wherein one of the plurality of phases is a protein concentrate phase.