Comparison of fatty acids from yellow mullet fish oil and total lipids from the microalga Chlamydomonas reinhardtii. Panel A and B: FAME separation by GC-MS using a polar Zebron 7HG-G007-11 capillary column. 16:4 from yellow mullet fish oil and Chlamydomonas reinhardtii show different retention times. Panel C and D: MS analysis on Thermo Orbitrap QExactive of 3-pyridinyl carbinol derivatives from yellow mullet fish oil and Chlamydomonas reinhardtii 16:4 after their separation by UPLC. The FAMEs from Chlamydomonas reinhardtii were produced from the total lipid extract of a culture performed as previously described (Gerard et al., 2022).