Fermentative production of sulfur-containing fine chemicals, useful e.g. as feed additive, by culturing bacteria containing heterologous sequence for methionine synthase

摘要

Fermentative production of at least one sulfur-containing fine chemical (I) by fermenting a (I)-producing coryneform bacterium (A), concentrating (I) in medium or cells, then isolating it. (A) expresses at least one heterologous nucleotide sequence (II) that encodes a protein (III) with methionine synthase (metF) activity. An Independent claim is also included for preparation of a feed additive (B) that contains L-methionine by culturing/fermenting an L-Met producing microorganisms, removing water from the fermentation broth and optionally also up to 100 % of the biomass, then drying the treated broth to recover (B) in powdered or granular form.