Table 9.
Biosynthesis of PHA by B. cepacia JC-1 from sodium pentanoate as a co-substrate of palm oil in MS medium at 37 °C. The co-substrate concentration was varied and the total amount of both carbon sources was fixed at 1%. Data are presented as mean ± SD and are significantly different as determined via Tukey's HSD post hoc analysis, with P < 0.05 indicating significance.
| Co-substrate concentration [% (w/v)] |
Dry cell weight (g/L) |
PHA content (wt%) |
Residual biomass (g/L) |
PHA concentration (g/L) |
Monomer composition (mol%) 3HB |
3HV |
|---|---|---|---|---|---|---|
| 0.1 | 2.43 ± 0.06 | 62.92 ± 0.12 | 0.90 ± 0.02 | 1.53 ± 0.04 | 84.63 ± 0.19 | 15.37 ± 0.19 |
| 0.3 | 1.63 ± 0.02 | 39.31 ± 0.11 | 0.99 ± 0.01 | 0.64 ± 0.00 | 76.73 ± 0.11 | 23.27 ± 0.11 |
| 0.5 | 1.05 ± 0.06 | 6.93 ± 0.06 | 0.98 ± 0.06 | 0.07 ± 0.00 | 63.53 ± 0.29 | 36.47 ± 0.29 |
| 0.7 | 0.99 ± 0.02 | 8.75 ± 0.05 | 0.90 ± 0.02 | 0.09 ± 0.00 | 87.41 ± 0.22 | 12.60 ± 0.22 |
| 0.9 | 1.00 ± 0.04 | 9.60 ± 0.05 | 0.90 ± 0.04 | 0.10 ± 0.00 | 91.88 ± 0.18 | 8.12 ± 0.18 |