TABLE 1.
The total biomass yield in Chlorella culture under mixotrophic and heterotrophic conditions with varying initial glucose concentrations (zero initial glucose indicates photoautotrophic conditions).
| Strain | Initial glucose concentration (g L−1) | Biomass yield (g/L/d) | Glucose consumption rate (%, w/w) | Additional biomass yield (g/L/d) | Additional biomass yield per gram of consumed glucose (g g−1) |
|---|---|---|---|---|---|
| Chlorella vulgaris KNUA104 | 0 | 0.35 ± 0.04 | |||
| Mixotrophic | |||||
| 5 | 1.76 ± 0.13 | 98.91 ± 1.01 | 1.41 ± 0.13 | 0.29 ± 0.03 | |
| 10 | 3.02 ± 0.10 | 94.75 ± 7.43 | 2.67 ± 0.10 | 0.28 ± 0.01 | |
| 15 | 2.98 ± 0.16 | 65.00 ± 0.47 | 2.63 ± 0.16 | 0.27 ± 0.02 | |
| 20 | 2.99 ± 0.10 | 47.25 ± 13.08 | 2.64 ± 0.10 | 0.28 ± 0.01 | |
| 25 | 3.00 ± 0.18 | 51.80 ± 7.07 | 2.65 ± 0.18 | 0.20 ± 0.01 | |
| Heterotrophic | |||||
| 5 | 1.31 ± 0.08 | 97.22 ± 1.23 | 0.96 ± 0.08 | 0.20 ± 0.02 | |
| 10 | 1.78 ± 0.45 | 87.25 ± 0.07 | 1.43 ± 0.45 | 0.16 ± 0.05 | |
| 15 | 1.79 ± 0.04 | 60.67 ± 2.82 | 1.44 ± 0.04 | 0.16 ± 0.01 | |
| 20 | 1.72 ± 0.26 | 57.50 ± 3.54 | 1.37 ± 0.26 | 0.12 ± 0.02 | |
| 25 | 1.99 ± 0.11 | 48.60 ± 3.11 | 1.64 ± 0.11 | 0.13 ± 0.01 | |
| Chlorella sorokiniana KNUA114 | 0 | 0.40 ± 0.08 | |||
| Mixotrophic | |||||
| 5 | 2.06 ± 0.01 | 99.13 ± 0.52 | 1.66 ± 0.01 | 0.33 ± 0.01 | |
| 10 | 3.49 ± 0.15 | 99.24 ± 0.41 | 3.09 ± 0.15 | 0.31 ± 0.02 | |
| 15 | 4.83 ± 0.20 | 89.67 ± 0.47 | 4.43 ± 0.20 | 0.32 ± 0.01 | |
| 20 | 5.18 ± 0.81 | 51.25 ± 0.35 | 4.78 ± 0.81 | 0.47 ± 0.08 | |
| 25 | 5.04 ± 0.93 | 53.00 ± 1.41 | 4.64 ± 0.93 | 0.35 ± 0.07 | |
| Heterotrophic | |||||
| 5 | 1.24 ± 0.11 | 98.59 ± 0.18 | 0.84 ± 0.11 | 0.17 ± 0.02 | |
| 10 | 2.97 ± 0.06 | 97.63 ± 0.34 | 2.57 ± 0.06 | 0.26 ± 0.01 | |
| 15 | 4.63 ± 0.52 | 87.43 ± 1.08 | 4.23 ± 0.52 | 0.32 ± 0.04 | |
| 20 | 4.26 ± 0.27 | 68.00 ± 14.14 | 3.86 ± 0.27 | 0.28 ± 0.02 | |
| 25 | 4.62 ± 0.50 | 52.80 ± 0.57 | 4.22 ± 0.50 | 0.32 ± 0.04 | |
| Chlorella sorokiniana KNUA122 | 0 | 0.38 ± 0.05 | |||
| Mixotrophic | |||||
| 5 | 1.77 ± 0.19 | 98.65 ± 0.67 | 1.39 ± 0.19 | 0.28 ± 0.01 | |
| 10 | 3.49 ± 0.26 | 98.58 ± 0.42 | 3.11 ± 0.26 | 0.32 ± 0.03 | |
| 15 | 4.73 ± 0.19 | 85.83 ± 0.70 | 4.35 ± 0.19 | 0.34 ± 0.01 | |
| 20 | 5.07 ± 0.22 | 64.75 ± 3.89 | 4.69 ± 0.22 | 0.36 ± 0.02 | |
| 25 | 5.01 ± 1.04 | 50.00 ± 3.96 | 4.63 ± 1.04 | 0.37 ± 0.08 | |
| Heterotrophic | |||||
| 5 | 1.12 ± 0.21 | 97.43 ± 0.84 | 0.74 ± 0.21 | 0.15 ± 0.04 | |
| 10 | 3.00 ± 0.11 | 98.68 ± 1.23 | 2.62 ± 0.11 | 0.27 ± 0.01 | |
| 15 | 3.64 ± 0.32 | 82.87 ± 0.66 | 3.26 ± 0.32 | 0.26 ± 0.03 | |
| 20 | 4.32 ± 0.32 | 51.50 ± 4.24 | 3.94 ± 0.32 | 0.38 ± 0.03 | |
| 25 | 2.38 ± 1.23 | 48.00 ± 3.39 | 2.00 ± 1.23 | 0.17 ± 0.10 |