The method for preparing aminobenzoic acid or aminobenzoic acid derivative

摘要

The present invention relates to the method for fermentation and the zymotic fluid of the acquisition anion of acid group containing aminobenzoic and/or aminobenzoic acid to prepare aminobenzoic acid or aminobenzoic acid derivative by suitable materials under the influence of suitable microorganism.Particularly, the present invention relates to aminobenzoic acid is obtained from zymotic fluid, wherein carrying out the crystallization of aminobenzoic acid by only single step acid processing in the presence of crystal seed.It can easily be detached from mother liquor with the aminobenzoic acid that this plain mode crystallizes, optionally further purification, is then supplied to a variety of different application purposes.