| abstract |
The present invention relates to a process for preparing aminobenzoic acid or an aminobenzoic acid conversion product comprising the steps of: (i) providing an aqueous aminobenzoic acid solution using a fermentation process; (ii) adsorbing aminobenzoic acid; (iii) desorbing aminobenzoic acid under a pH in the range of -0.8 to 3.0, preferably from -0.5 to 3.0, more preferably from 0.1 to 3.0, most preferably from 0 to , 5 to 2.5, very exceptionally, preferably from 1.0 to 2.0; (iv) obtaining the aminobenzoic acid from the desorbate obtained in step (iii); (v) optionally further converting the aminobenzoic acid obtained in step (iv) into an aminobenzoic acid conversion product. |