A process for the preparation of oryzanol from therice bran oil-soap-stock

摘要

An improved process for preparation of oryzanol from rice bran oil soap-stock, which comprises partitioning the soap-stock with water: polar solvent : non polar : solvent at a ratio 0.6:1.5:15 ( v/v/v/ ), optionally water contains dilute acid such as hydrochloric acid at a ratio 2:1, extracting non-polar phase by dilute alkali, separating aqueous phase followed by neutralizing with acid such as defined herein, extracting obtained aqueous phase repeatedly with hexane followed by water, recovering the oryzanol by conventional solvent extraction method, said process is characterized in using partition technique consisting of aqueous polar-non polar solvent.