Fig. 5From: Enhanced extraction of butyric acid under high-pressure CO2 conditions to integrate chemical catalysis for value-added chemicals and biofuelsFed-batch fermentation with CO2-pressurized (50 bar) liquid–liquid extraction. Microbial growth (circle, represented as the optical density at 600 nm), glucose consumption (triangle), and butyric acid production (square) are shown, and butyric acid productivity was 4.10 g/L hBack to article page