Method for the extraction of aleurone from bran
AssigneeBuhler AG
InventorsArturo Bohm, Carlo Bogoni, Raimund Behrens, Thomas Otto
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for the preparation of aleurone from bran, in particular, wheat bran, for the extraction of aleuronic cells in particular from wheat grain, whereby the mainly aleurone-containing aleuronic components are separated from the mainly non-aleurone-containing non-aleuronic components in the bran and the aleurone-containing components are then isolated. The separation can be achieved by biochemical/enzymatic means and/or by mechanical-abrasive means. The subsequent isolation and extraction can be achieved by wet and/or dry separating methods.
Claims73
Method for processing bran, in particular wheat bran, and extracting aleurone cells, in particular those of wheat kernels, characterized in that the predominantly aleurone-containing aleurone components are separated from the predominantly aleurone-free non-aleurone components in the bran, and the aleurone-containing components are then removed.
Method according to any one of the preceding claims, characterized in that hydrated mixture or the aleurone juice, which contains the aleurone components and the biochemically active substance with the enzymes, is pasteurized after a sufficiently long period of enzymatic activity.
Method according to any one of the preceding claims, characterized in that the mill product consisting of ground bran is separated by simultaneously directing the mill product into an inclined, vibrating channel at one spot, whose inclination, surface roughness, and vibration are designed in such a way that the different mill product components move along the channel at different migration speeds, which allows different mill product fractions with more or fewer aleurone components to be extracted at different spots further along the channel at successive time intervals.
Method according to any one of the preceding claims, characterized in that the mill product is separated by sedimentation in a fluid-filled container, whereby different mill product fractions are extracted at the bottom of the container as sediment layers containing more or fewer aleurone components due to the differing sinking times of the various mill product components in the fluid-filled container.
Method according to any one of the preceding claims, characterized in that the mill product is separated by moving the mill product particles along an equipotential surface of a heterogeneous electrical field, which causes the mill jet or the mill stream to be split into fractions containing more or fewer aleurone components due to the differing dielectric properties of the mill product particles.
Method according to any one of the preceding claims, characterized in that the mill product particles become electrostatically charged by rubbing against one another and/or on part of the container and are then moved transversely to an electrical field, which causes the mill jet or the mill stream to be split into fractions containing more or fewer aleurone components due to the differing electrical properties of the mill product particles.
Method according to any one of the preceding claims, characterized in that the mill product fractions extracted are further treated with a biochemical substance specific to each fraction.
Application of a form of aleurone components isolated by specific microfiltration and/or specific centrifugation from the protoplasm of aleurone cells.
Dependencies are inferred from the claim text.