By using rice bran phytin and maize phytin as material with the method of autophoteolysis or oxalic acid replacement reaction phytic acid was extracted.

• 以米糠、玉米植酸钙为原料，采用自溶法和草酸置换法制取植酸。试验表明，无论是以玉米植酸钙还是以米糠植酸钙为原料，用自溶法制得植酸的质量明显优于草酸置换法。