. 2015 Jul 10;9(12):2630–2641. doi: 10.1038/ismej.2015.69

Table 1. Catabolic reactions considered in the glucose anaerobic fermentation microbial ecosystem.

Anaerobic fermentation of glucose
X_i	Catabolism reaction	N_e, mol_e− mol_eD⁻¹	ΔG⁰¹a, kJ mol_eD⁻¹	ΔG⁰¹/e⁻, kJ mol_e−⁻¹
1	C₆H₁₂O₆ + 2H₂O → 2C₂H₃O₂⁻ + 2CO₂ + 4H₂ + 2H⁺	8	−215.90	−26.99
2	C₆H₁₂O₆ → C₄H₇O₂⁻ + 2CO₂ + 2H₂ + H⁺	12	−264.10	−22.01
3	C₆H₁₂O₆ + 2H₂ → 2C₃H₅O₂ + 2H⁺ + 2H₂O	12	−359.25	−29.94
4	C₆H₁₂O₆ → 2C₂H₆O + 2CO₂	16	−235.00	−14.69
5	C₂H₃O₂⁻ + H⁺ → CH₄ + CO₂	2	−35.78	−17.89
6	C₂H₃O₂⁻ + H⁺ + 2H₂O → 2CO₂ + 4H₂	8	95.02	11.88
7	½CO₂ + H₂ → ¼C₂H₃O₂⁻ + ¼H⁺ + ½H₂O	2	−23.76	−11.88
8	H₂ + ¼CO₂ → ¼CH₄ + ½H₂O	2	−32.70	−16.35
9	C₄H₇O₂⁻ + 2H₂O → 2C₂H₃O₂⁻ + H⁺ + 2H₂	4	48.20	12.05
10	C₃H₅O₂⁻ + 2H₂O → C₂H₃O₂⁻ + 3H₂ + CO₂	6	71.68	11.95
11	C₂H₆O + H₂O → C₂H₃O₂⁻ + H⁺ + 2H₂	4	9.55	2.39
12	C₆H₁₂O₆ + 6H₂O → 6CO₂ + 12H₂	24	−25.85	−1.08
13	C₆H₁₂O₆ + 2H₂O → 2CH₄ + 4CO₂ + 4H₂	12	−287.46	−17.97
14	C₆H₁₂O₆ → 3C₂H₃O₂⁻ + 3H⁺	16	−310.92	−19.43
15	C₆H₁₂O₆ →3CH₄ + 3CO₂	20	−418.26	−20.91
16	C₄H₇O₂⁻ + H⁺ + 6H₂O → 4CO₂ + 10H₂	20	238.25	11.91
17	C₄H₇O₂⁻ + H⁺ + 2H₂O → 2CH₄ + 2CO₂ + 2H₂	8	−23.36	−1.95
18	C₃H₅O₂⁻ + H⁺ + 4H₂O → 3CO₂ + 7H₂	14	166.70	11.91
19	C₃H₅O₂⁻ + H⁺ + 2H₂O → CH₄ + 2CO₂+3H₂	8	35.90	3.59
20	C₂H₆O + 3H₂O → 2CO₂ + 6H₂	12	104.57	8.71
21	C₂H₆O + H₂O → CH₄ + CO₂ + 2H₂	6	−26.23	−3.28

Considering pH 7 and 298.15 K. Liquid concentrations 1 m and 1 bar for gas components (CH₄, CO₂ and H₂).