The invention discloses a preparation method for extracting high-purity
inositol hexaphosphate from defatted rice
bran, and belongs to the technical field of
inositol hexaphosphate preparation.The preparation method comprises the following steps that rice
bran and water are taken and mixed according to a certain proportion, and sufficient stirring is conducted; the method comprises the following steps: adding high-purity
hydrochloric acid into a
mixed solution of rice
bran and water to keep the pH value of the
mixed solution within a certain value, and extracting the
mixed solution; adding a
settling agent for removing
protein,
starch, ash and carbohydrates into the extracting solution for
settling, and then removing most of impurities such as organic matters and the like through plate and frame
filtration; further removing impurities such as residual organic matters through membrane
filtration, and resolving by using high-purity
hydrochloric acid after
ion exchange; the
reagent is separated and analyzed through a special membrane, a high-purity
phytic acid solution is obtained, high-purity
phytic acid is obtained through low-temperature vacuum concentration to 50%, and the problems that in the prior art,
phytic acid prepared through a repeated exchange anion and cation removal method and other processes is poor in purity and quality and cannot meet the quality requirements of
medicine and health care products are solved.