Fig. 3From: Enhanced isopropanol–butanol–ethanol mixture production through manipulation of intracellular NAD(P)H level in the recombinant Clostridium acetobutylicum XY16Effects of intracellular NADPH at different fermentation time and pH controlled at 4.6, 4.8, 5.0, 5.2, and 5.5 (a). Effects of intracellular NADH at different fermentation time and pH controlled at 4.6, 4.8, 5.0, 5.2, and 5.5 (b)Back to article page