Table 4.
Row no. | Media and strains | Glucose | Cell mass |
FAME |
||||
---|---|---|---|---|---|---|---|---|
Consumed | OD600 | DCW | Yield | FAME% | Total | Yield | ||
g L-1 | g L-1 | g g-1 sugar | DCW basis | amount g L-1 | mg g-1 sugar | |||
Moderate C/N medium for FAME production at basal level | ||||||||
1 | HA1 (EV) | 29.2 ± 0.3 | 21.2 ± 0.7 | 11.9 ± 0.5 | 0.41 ± 0.02 | 27% ± 2% | 3.2 ± 0.2 | 113 ± 9 |
2 | YL165-1 | 29.3 ± 0.2 | 19.4 ± 0.8 | 10.5 ± 0.4∗ | 0.36 ± 0.02∗ | 15% ± 2%∗∗ | 1.5 ± 0.1∗∗ | 52 ± 6∗∗ |
(Statistical analysis: Row 2 vs. row 1) | ||||||||
High C/N ratio medium for FAME production at suboptimal level | ||||||||
3 | HA1 (EV) | 12.6 ± 0.9 | 5.1 ± 0.2 | 3.1 ± 0.1 | 0.25 ± 0.02 | 28% ± 1% | 0.9 ± 0.1 | 69 ± 7 |
4 | YL165-1 | 48.0 ± 1.3∗∗ | 16.2 ± 0.6 | 10.1 ± 0.3 | 0.21 ± 0.01 | 34% ± 2%∗ | 3.4 ± 0.2∗∗ | 71 ± 4∗∗ |
(Statistical analysis: Row 4 vs. row 2) | ||||||||
High C/N ratio medium + TMAO for FAME production at optimal level | ||||||||
5 | HA1 (EV) | 16.1 ± 1.1 | 6.2 ± 0. 2 | 4.1 ± 0.3 | 0.26 ± 0.03 | 24% ± 1% | 1.0 ± 0.1 | 63 ± 8 |
6 | YL165-1 | 79.9 ± 0.1∗∗ | 35.3 ± 1.2∗∗ | 21.9 ± 0.5∗∗ | 0.27 ± 0.01∗ | 27% ± 2% | 5.9 ± 0.3∗∗ | 74 ± 5 |
(Statistical analysis: Row 6 vs. row 4) |
Data presented as the average of 3 biological replicate samples with SEM. ∗ and ∗∗ indicate statistical significance of p < 0.05 and p < 0.01, respectively. DCW, dry cell weight; Glu, glucose. HA1 (EV), parent control strain HA1 transformed with empty vector; TMAO, trim ethylamine N-oxide dehydrate.