Table 1 Growth conditions and characteristics of produced biopolymers: PHB, PHB-HV, and PHB-PEG
Polymers | Growth conditions and characteristics | Composition in polymer | Molecular weight | |||||
|---|---|---|---|---|---|---|---|---|
|  | Substrates (concentration, mM) | Biomass yields (g/l ± SD) | Total PHA content, (wt.% ± SD) | 3HV content, mol% | PEG content, mol% | Molar ratio PEG/PHB | Molecular weight (Mw, ×103) | Mw/Mn |
PHB | Sucrose (50 mM) + sodium citrate (75 mM) | 4.2 ± 0.4 | 69.3 ± 4.2 | 0 | 0 | 0 | 178 | 1.85 |
PHB-HV | Sucrose (50 mM) + VA (5 mM) + sodium citrate (50 mM) | 3.7 ± 0.3 | 68.1 ± 3.5 | 5.7 | 0 | 0 | 172 | 2.04 |
PHB-PEG | Sucrose (50 mM) + PEG 300 (150 mM) | 2.2 ± 0.4 | 34.2 ± 2.7 | 0 | 0.33 | 0.96 | 160 | 1.91 |