The invention relates to a method for obtaining proteins from native mixtures of materials, comprising the following steps: A) providing a native mixture of materials from seeds having hard shells that can be broken into pieces, B) reducing the mixture of materials to small pieces in order to break open the shells in any case, C) dispersing the mixture of materials reduced to small pieces from step A) or B) with water, D) setting the pH value of the slurry (I) from step C) to an alkaline range of pH > 9.5 E) adding the water-soluble organic solvent alcohol to the slurry from step C) after the setting of the pH value of the slurry in step D) F) removing a solid phase, which comprises the predominant share of the shells, preferably in the centrifugal field in a centrifuge G) shifting the pH value of the slurry freed of shells from step F) to the pH range from pH = 4.5 to pH = 7.2, and H) dividing the shell-free slurry, the pH value of which has been shifted back into the acidic range, into valuable-material phases in one or two steps, preferably in a centrifuge, in particular in at least one decanter, wherein one of said phases is a protein concentrate phase (protein quark), which finally can be dried to form powder, and the other phase is a phase containing albumin.
