INDUSTRIAL FERMENTATION PROCESS FOR BACILLUS USING DEFINED MEDIUM AND TRACE ELEMENT FEED

摘要

The present invention is directed to an industrial fermentation process for cultivating a Bacillus cell in a chemically defined fermentation medium and a method for producing a protein of interest comprising the steps of providing a chemically defined fermentation medium, inoculating the fermentation medium with a Bacillus cell comprising a gene encoding a protein of interest, cultivating the Bacillus cell in the fermentation medium under conditions conductive for the growth of the Bacillus cell and the expression of the protein of interest, wherein the cultivation of the Bacillus cell comprises the addition of one or more feed solutions comprising one or more chemically defined carbon sources and one or more trace element ions to the fermentation medium.