Table 3 Fatty acid profile (%) of P. tricornutum cultivated under optimized conditions (− 50%N, + 50%P, Zero-Si, and 2 g glycerol, low blue light intensity) compared to control, as determined by GC–MS analysis and control using GC–MS mass analysis
Fatty acids | No. of carbon atoms | Fatty acids content (%) | |
|---|---|---|---|
Control | Optimized | ||
Myristic acid | C14:0 | 7.25 ± 0.32 | 6.27 ± 0.8 |
Palmitic acid | C16:0 | 24.94 ± 2.21 | 39.84 ± 3.61 |
Stearic acid | C18:0 | ND | 1.22 ± 0.11 |
Arachidic acid | C20:0 | ND | 1.39 ± 0.22 |
Total saturated fatty acids (∑SFA) | 32.19 ± 2.53 | 48.72 ± 4.74* | |
Palmitoleic acid | C16:1t | 26.77 ± 3.22 | 14.04 ± 0.91 |
cis-10-Heptadecenoic acid | C17:1 | ND | |
Elaidic acid | C18:1t | 1.80 ± 0.24 | ND |
Nervonic acid | C24:1 | 3.52 ± 0.91 | ND |
Oleic acid | C18:1(n-9) | ND | 6.55 ± 1.01 |
Total monounsaturated fatty acids (∑MUFA) | 36.12 ± 5.28* | 20.59 ± 1.01 | |
Linoleic acid | C18:2(n-6) | 2.68 ± 0.6 | 4.76 ± 0.71 |
Gamma-linolenic acid (GLA) | C18:3(n-6) | 1.96 ± 0.31 | 3.38 ± 0.11 |
Eicosapentaenoic acid (EPA) | C20:5n3 | 7.04 ± 0.41 | 4.80 ± 0.21 |
Eicosatrienoic acid | C20:3n3 | ND | 0.82 ± 0.01 |
Alpha-linolenic acid(ALA) | C18:3n3 | ND | 0.93 ± 0.11 |
Total polyunsaturated fatty acids (∑PUFA) | 11.68 ± 1.32 | 14.71 ± 1.15* | |