Formation of diacetyl and acetoin by Lactococcus lactis via aspartate catabolism.

  title={Formation of diacetyl and acetoin by Lactococcus lactis via aspartate catabolism.},
  author={Dominique Le Bars and Mireille Yvon},
  journal={Journal of applied microbiology},
  volume={104 1},
AIMS To verify whether diacetyl can be produced by Lactococcus lactis via amino acid catabolism, and to investigate the impact of the pH on the conversion. METHODS AND RESULTS Resting cells of L. lactis were incubated in reaction media at different pH values, containing L-aspartic acid or L-alanine as a substrate. After incubation, the amino acid and metabolites were analysed by HPLC and GC/MS. At pH 5 about 75% of aspartic acid and only 40% of alanine was degraded to pyruvate via a… CONTINUE READING
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