Process of preparing an organic acid

摘要

A process is disclosed for preparing an organic acid and/or its salts from a solution obtained through fermentation. In this process, a pure carbohydrate-containing raw material is used. The acid-containing solution prepared by means of fermentation is supplied to a cell separation, and the acid-containing permeate is supplied to a protein precipitation, where it is mixed with a silicon-containing precipitant at temperatures between 2 DEG and 70 DEG C. The solution thus obtained is supplied to a protein separation, and the acid-containing permeate is concentrated and then supplied to a single- or multi-stage crystallization or a granulation.