Valuable Product and Method for Obtaining a Valuable Material Phase

A method for obtaining a valuable-substance phase, more particularly a valuable product as claimed in any of the preceding claims from a native substance mixture, comprising the following steps:

• Step A:
• Providing the native substance mixture composed of seeds from the cabbage family (Brassicaceae), having a proportion of hard, breakable shells or in shelled form, more particularly rapeseeds as substance mixture composed of the complete seeds or composed of already (partially) deoiled seeds, more particularly as the press cake remaining as oil-extraction residue when pressing out oil especially with a press;
• Step B:
• If the substance mixture from step A has not yet been comminuted:
• comminuting the substance mixture to break up the shells if necessary;
• Step C:
• Dispersing and/or mixing (20) the comminuted substance mixture from step A) or B) with water (40), with addition of preferably up to a maximum of 8, particularly preferably up to a maximum of 6 and more particularly up to a maximum of 5 parts water to one part comminuted substance mixture and with stirring of the water (40) and the comminuted substance mixture to yield a flowable slurry or a dispersion;
• Step D:
• Adjusting the pH of the slurry from step C) into an alkaline range of pH>9.5;
• Step E:
• Adding a water-soluble organic solvent, preferably ethanol (30), more particularly in water-diluted form, to the slurry from step D) following the adjustment of the pH of the slurry in step D;
• more particularly in such a way that an alcohol concentration of less than 30% is reached in order to detach the shells from the endosperm of the seeds/fruits;
• Step F:
• Separating off a solid phase (60) comprising the overwhelming proportion of any shells (70) still present, preferably in the centrifugal field in a centrifuge;
• Step G:
• Shifting the pH of the solid phase-cleared slurry from step F) into the pH range of from pH=4.5 to pH=7.2;
• and
• Step H:
• Separating the shell-free slurry (90), the pH of which was shifted into the acidic range in step G), preferably in a centrifuge, more particularly in at least one decanter or one separator, into multiple phases, wherein at least one of said phases is a sinapinic acid-containing phase (110);
• Step I:
• Adding laccase (130) to the sinapinic acid-containing phase (110) of step H) directly or after passing through further intermediate steps.