Fig. 4

Growth profiles corresponding to the highest pyrolytic sugar fractions (highest IV/G values) where growth was achieved for each of the extracts tested. The initial sugar concentration was 25 g/L for all the blends tested. The percentages in the legends represent the fraction of pyrolytic sugar at the beginning of the fermentation. The solid lines represent the best fit of the Baranyi model, while the discrete data points show the average of four replicate fermentations. Data points are shown in 2-min intervals, for visual clarity, while data were recorded every 10 s