Dewatering starch concentrate from potatoes - by first carrying out enzyme conversion of some starch to sugar followed by solvent extraction with polar solvent and pressure filtration

摘要

During starch prodn. from potato pulp, the initial pulp has a wt. content of 10% solids. This is subjected to an enzyme reaction at 60-100 degrees C to convert some starch to glucose. The resulting slurry is subjected to pressure filtration. The moist cake from this, contg. 25% solids is then mixed with water or a polar solvent such as CH OH ethanol, isopropanol etc. The resulting slurry is then further filtered in a pressure filtrate to give a cake of 40 - 45 wt.% of solids, which is then dried. Used for producing starch from potatoes. Reduces the energy consumption per unit of starch.