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Fig. 5 | Biotechnology for Biofuels

Fig. 5

From: A microbubble-sparged yeast propagation–fermentation process for bioethanol production

Fig. 5

Changes in gene expression during gassed fermentation of MB-propagated yeast. An overview of the experimental approach is provided in Fig. 4a. a Venn diagrams showing differential gene expression (≥ twofold, adjusted p ≤ 0.01) at the indicated times for fermentations gassed with 1% O2 using RB (blue) or MB (red). b Cellular pathway overview of S. cerevisiae metabolism from yeast pathways [17] showing reactions associated with differentially genes 4 h into the fermentations compared to the MB-propagated inocula: up-regulated in both RB and MB fermentations (red); down-regulated in both RB and MB fermentations (dark blue); up-regulated in RB (orange) or MB (cyan) fermentations only; down-regulated in RB (purple) or MB (green) fermentations only. c Higher resolution representations of (left to right) glucose fermentation, citric acid cycle (CAC) and aerobic respiratory chain, sterol biosynthesis and arginine metabolism. Colour key as stated in b

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