Figure 6From: Enhanced photo-fermentative H2 production using Rhodobacter sphaeroides by ethanol addition and analysis of soluble microbial productsCellular level of NAD(H) and NADP(H) in the absence and presence of 0.2% ethanol of batch-type photo-fermentation. (a) NADH, NAD+, and the total level of NADH + NAD+ (tNAD), (b) NADPH, NADP+, and the total level of NADPH + NADP+ (tNADP), and (c) the ratios of both NADH/NAD+ and NADPH/NADP+.Back to article page