abstract |
The invention relates to a process for the fermentative production of L-amino acids, in particular L-threonine, in which the following steps are carried out: DOLLAR A a) Fermentation of the desired L-amino acid-producing microorganisms of the Enterobacteriaceae family, in which at least one or more of the Genes selected from the group hdeA and hdeB, or nucleotide sequences coding therefor, in particular overexpressed, DOLLAR A b) enrichment of the desired L-amino acid in the medium or in the cells of the bacteria and DOLLAR A c) isolation of the desired L-amino acid. |