Fig. 4
From: Exploration of Trichoderma reesei as an alternative host for erythritol production
Biomass and polyol concentrations in dependence on the type of nitrogen source and its concentration. T. reesei was cultivated in shake flasks on 50 g/L glucose as the sole carbon source combined with four different nitrogen sources for 96 h. Ammonium (NH4+), nitrate (NO3−), and urea were added at initial concentrations of 20 mM and 80 mM, and yeast extract (YE) was added at initial concentrations of 2 and 8 g/L. Biomass was determined by dry cell weight measurement at the end of cultivation (A). Concentration of polyols was measured at several time points during the cultivation, but for easier visualization, only the concentrations in the supernatant at the end of cultivation, which was the highest obtained concentration, are given (B)