Table 4: Fatty acid profiles of biodiesel feedstock (wt.%) resulting from gas chromatographic analysis.

Fatty acidDouble bound position2Rapeseed [15]Sunflower [15]Nannochloropsis salina [16]Phaeodactylum tricornutum [17]Botryococcus braunii [18]

C12:015.00.7
C14:04.50.8
C15:00.50.5
C16:04.96.237.525.821.0
C16:190.123.337.52.0
C16:27, 106.5
C16:37, 10, 1315.2
C17:00.40.1
C18:01.63.70.91.32.9
C18:1933.025.211.93.2
C18:29, 1220.463.11.55.113.6
C18:39, 12, 157.90.22.033.0
C20:00.30.10.2
C20:1119.30.2
C22:00.70.1
C20:45, 8, 11, 143.31.6
C20:55, 8, 11, 14, 1715.313.1
C22:00.4
C22:11323.00.1
C24:00.20.2
C24:115

1Fatty acid with chain length of 12 carbon atoms and 0 double bonds. The same nomenclature applies for all other fatty acids.
2Double bound position beginning from the carboxyl group.