Table 2.
Production of 3-hydroxybutyrate (3HB) by C. necator DSM 545 under the simultaneous saccharification and fermentation (SSF) experiments with 3% of rice by-products or sweet potato waste and a medium dosage of STARGEN™ 002 (1.42 µL per g of starch). As a benchmark, an experiment with 3% of glucose was also included. The values represent the means of three replicates ± SD.
| Substrate | CDM 1 (g/L) | Time (h) | 3HB (% CDM 1) | 3HB (g/L) |
|---|---|---|---|---|
| Glucose | 7.08 ± 0.07 | 72 | 70.00 ± 0.77 | 4.95 ± 0.05 |
| 8.51 ± 0.08 | 96 | 77.60 ± 0.81 | 6.60 ± 0.07 | |
| Broken rice | 12.99 ± 0.06 | 72 | 39.51 ± 0.24 | 5.13 ± 0.03 |
| 13.32 ± 0.09 | 96 | 44.09 ± 0.19 | 5.18 ± 0.02 | |
| Discolored rice | 8.87 ± 2.17 | 72 | 20.10 ± 1.31 | 1.95 ± 0.13 |
| 11.33 ± 1.32 | 96 | 31.69 ± 1.23 | 3.65 ± 0.14 | |
| Unripe rice | 11.86 ± 0.24 | 72 | 19.39 ± 0.35 | 2.30 ± 0.04 |
| 11.29 ± 0.16 | 96 | 17.81 ± 0.40 | 2.02 ± 0.05 | |
| Purple sweet potato | 10.86 ± 1.75 | 72 | 31.05 ± 0.73 | 3.39 ± 0.08 |
| 10.48 ± 0.00 | 96 | 34.42 ± 0.17 | 3.61 ± 0.02 | |
| White sweet potato | 11.10 ± 0.66 | 72 | 27.67 ± 1.11 | 3.12 ± 0.13 |
| 10.51 ± 0.24 | 96 | 22.10 ± 0.87 | 2.33 ± 0.09 |
1 CDM: cell dry matter.