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

摘要

Method for 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 homoserine O-acetyltransferase (metA) 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.