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Fig. 7 | Microbial Cell Factories

Fig. 7

From: High-yield production of protopanaxadiol from sugarcane molasses by metabolically engineered Saccharomyces cerevisiae

Fig. 7

Fed-batch fermentation of BY-V in a 5-L bioreactor. (a) Dissolve oxygen, ethanol feeding, and (b) cell density, glucose/ethanol consumption of strain BY-V. (c) DM-II and PPD production from the fermented broth and faint yellow sediment. Stage I, II, III, IV, V, VI represent 1, 2, 3, 4, 5, 4 g/L ethanol fed at intervals to control the concentration of ethanol at the range of 1–5 g/L. A total of 230 mL ammonia was added to maintain the pH at 5.5. Error bars indicate standard deviations (n = 3)

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