METHOD FOR FRACTIONATING OAT, PRODUCTS THUS OBTAINED, AND USE THEREOF

摘要

Disclosed is a method of preparing BETA-glucan, protein, starch and lipid concentrates from oat, comprising the steps of: (a) extracting non-heat treated oat with a fluid in a supercritical state, whereby a fat-extracted oat fraction and one or more fat fractions are obtained, (b) dry-milling the fat-extracted oat fraction by impact milling into oatmeal having such a particle size that at least 95 percent of the particles are between 1.0 and 3,000 ìm calculated on the basis of the volume, (c) dividing the thus obtained oatmeal into a first coarse fraction and a first fine fraction, said first coarse fraction comprising a BETA-glucan concentrate having a beta-glucan content of 12 to 50 percent and said first fine fraction comprising a starch concentrate having a starch content of more than 65 percent and said division being performed by using one or more operations selected from sieving and air classification and, optionally, dry milling, (d) dividing said first fine fraction further by sieving or air classification into a second coarse fraction, a second fine fraction and a third fine fraction, said second coarse fraction comprising a beta-glucan concentrate having a beta-glucan content of 25 to 60 percent, said second fine fraction comprising a starch concentrate having a starch content of more than 80 percent, and said third fine fraction comprising a protein concentrate having a protein content of more than 30 percent. Also disclosed is a composition made by the method and the use of a concentrate for use in food stuff the pharmaceutical industry and cosmetics.