Table 1 Metabolic model of PHA production from mixtures of acetate and propionate by mixed microbial cultures

CH₂O + ATP → CHO_0.5 + 0.5·H₂O

${\text{CH}}_2{\text{O}}_{\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ + 0.67·ATP → ${\text{CH}}_{\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}{\text{O}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ + 0.33·H₂O

1.5·${\text{CH}}_{\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}{\text{O}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ + H₂O → CHO_0.5 + 1.5·NADH₂ + 0.5·CO₂

1.27·CHO_0.5 + 0.2·NH₃ + K₁·ATP + 0.3·H₂O → CH_1.4N_0.2O_0.4 + 0.53·NADH₂ + 0.27·CO₂

1.06·${\text{CH}}_{\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}{\text{O}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ + 0.2·NH₃ + K₂·ATP + 0.17·H₂O → CH_1.4N_0.2O_0.4 + 0.47·NADH₂ + 0.06·CO₂

CHO_0.5 + 1.5·H₂O → CO₂ + 2·NADH₂ + 0.5·ATP

ATP → m_ATP

NADH₂ + 0.5·O₂ → H₂O+δ·ATP

CHO_0.5 + 0.25·NADH₂ → CH_1.5O_0.5

${\text{CH}}_{\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}{\text{O}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ + 0.17·NADH₂ → ${\text{CH}}_{\raisebox{1ex}{$5$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}{\text{O}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$

CH_1.5O_0.5 → PHB

0.4·CH_1.5O_0.5 + 0.6·${\text{CH}}_{\raisebox{1ex}{$5$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}{\text{O}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ → PHV

${\text{CH}}_{\raisebox{1ex}{$5$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}{\text{O}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ → PH2MV