Table 1.

Example derivation of the macrochemical equation for the growth of S. lothica (strain PV-4) with C = ED = acetate and A = NO${}_3^{-}$

	Reaction	YA	$Y_{A_{\mathit{red}}}$	YC	$Y_{C_{ox}}$	Y
Catabolism	$0.66{\text{C}}_2{\text{H}}_3{\text{O}}_2^{-}+1.32{\text{NO}}_3^{-}+0.84{\text{H}}^{+}\to 0.66{\text{N}}_2\text{O}+1.32{\text{HCO}}_3^{-}+0.66{\text{H}}_2\text{O}$	1.32	0.66	0.66	1.32	—
Anabolism	$0.34{\text{C}}_2{\text{H}}_3{\text{O}}_2^{-}+0.13{\text{NH}}_4^{+}+0.18{\text{H}}^{+}\to 0.65{\text{CH}}_{1.8}{\text{O}}_{0.5}{\text{N}}_{0.2}+0.03{\text{HCO}}_3^{-}+0.26{\text{H}}_{2}0$	—	—	0.34	0.03	0.65
Overall*	${\text{C}}_2{\text{H}}_3{\text{O}}_2^{-}+1.32{\text{NO}}_3^{-}+1.02{\text{H}}^{+}+0.13{\text{NH}}_4^{+}\to$
	$0.65{\text{CH}}_{1.8}{\text{O}}_{0.5}{\text{N}}_{0.2}+1.35{\text{HCO}}_3^{-}+0.66{\text{N}}_2\text{O}+0.92{\text{H}}_2\text{O}$	1.32	0.66	1	1.35	0.65

*The macrochemical equation expressed per unit mole of C is obtained by summing up the catabolic and anabolic reactions, as discussed in Coupling Catabolic and Anabolic Reactions.