Fig. 2

Metabolite profiles of S. cerevisiae TMB4443 during 170 h of cultivation under aerobic conditions in glucose defined medium. Glucose and ethanol profiles are shown under the absence (a) or the excess of nitrogen (c). b, d correspond to the N-def and N-high experiments, respectively, and show the variation of glycerol, acetate and CDW levels. Each set of graphs (a and b for N-def; c and d for N-high) corresponds to one biological replicate representative of the two that were performed