In extractive method, the byproducts in farm product processing such as defatted rice bran and corn-soaking water are used as raw materials, and through separation, removal impurities and neutralization processes to produce phytic acid. 提取法制取植酸主要以农产品加工副产物如脱脂米糠、玉米浸渍水等为原料经分离、除杂、中和等工序制取;