| 摘要 |
A process for the production of L-amino acids, in particular L-threonine, in which the following steps are carried out: (a) fermentation of the microorganisms of the family Enterobacteriaceae producing the desired L-amino acid, in which the fruR gene or nucleotide sequences coding therefor are attenuated, in particular are switched off, (b) enrichment of the L-amino acid in the medium or in the cells of the bacteria, and (c) isolation of the L-amino acid.
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