Fig. 1From: Cofactor engineering to regulate NAD+/NADH ratio with its application to phytosterols biotransformation a Time courses of the AD (D) production and NAD+/NADH ratio during phytosterols transformation with MNR M3. b Effect of NA on cell growth, NAD+/NADH ratio, and AD (D) production during phytosterols biotransformation with MNR M3. Biotransformation conditions: 50 mL fermentation medium in 250 mL shake flask, 5 g/L phytosterols, 30 °C, 140 r/min for 120 h transformation. The error bars represent mean ± SD (n = 3)Back to article page