Precursors of the major end products of aerobic metabolism of Brochothrix thermosphacta

To further our understanding of off‐odour production by Brochothrix thermosphacta , the nature and origins of its end products have been compared during aerobic growth in complex and in minimal, defined medium. In complex medium glucose is the major precursor of acetoin and acetic acid but alanine may be an additional minor source. Iso butyric, iso valeric (3‐methylbutyric) and 2‐methylbutyric acids are derived exclusively from valine, leucine and iso leucine, respectively. In minimal defined medium although the same end products are produced they are all derived from glucose.