Table 6 Main fatty acid composition of the lipids produced by Y. lipolytica under different culture conditions
Culture condition | Carbon source | Relative fatty acid content (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
C16:0 | C16:1 | C18:0 | C18:1 | C18:2 | C18:3 | Unsaturated | Total | ||
28 °C, 180 rpm, initial pH 6.0 | Acetic acid | 13.3 | 3.9 | 10.5 | 43.6 | 21.6 | 2.3 | 75.0 | 95.2 |
Propionic acid | 15.2 | 7.1 | 12.7 | 35.2 | 20.6 | 1.9 | 69.9 | 92.7 | |
Butyric acid | 14.9 | 5.2 | 16.6 | 33.5 | 19.9 | 1.2 | 65.5 | 91.3 | |
FW-derived VFA | 20.5 | 4.3 | 18.7 | 34.1 | 7.6 | 0.8 | 46.8 | 86.0 | |
38 °C, 180 rpm, initial pH 6.0 | Acetic acid | 21.7 | 5.5 | 19.0 | 24.6 | 14.2 | N.D. | 52.1 | 85.0 |
Propionic acid | 23.0 | 10.8 | 23.6 | 19.0 | 11.3 | N.D. | 46.9 | 87.7 | |
Butyric acid | 20.5 | 9.3 | 25.2 | 15.9 | 11.6 | N.D. | 44.6 | 82.5 | |
FW-derived VFA | 28.8 | 3.5 | 22.0 | 23.4 | 2.7 | N.D. | 29.6 | 80.4 | |
28 °C, 180 rpm, pH uncontrolled | Acetic acid | 17.9 | 5.6 | 13.0 | 37.5 | 17.9 | 0.6 | 66.6 | 92.5 |
Propionic acid | 20.0 | 9.7 | 16.4 | 30.2 | 14.1 | N.D. | 59.7 | 90.4 | |
Butyric acid | 18.8 | 8.4 | 22.6 | 23.5 | 15.6 | N.D. | 53.4 | 88.9 | |
FW-derived VFA | 18.9 | 4.2 | 18.3 | 30.9 | 5.5 | N.D. | 40.6 | 77.8 | |