Research Article

Supercritical SC-CO2 and Soxhlet n-Hexane Extract of Tunisian Opuntia ficus indica Seeds and Fatty Acids Analysis

Table 2

Fatty acid constituents in seed oil extracted by SC-CO2 from Tunisian O. ficus indica spiny form at different temperatures at fixed parameters ( 𝑃 = 1 8 0 bar, CO2 flow rate = 15 mL s−1, and time = 135 min).

Fatty acidsExtraction SC-CO2 temperature [°C]
40506070
Fatty acids constituents [%] M ± SD

C14 : 0 0 . 1 9 ± 0 . 0 2 0 . 2 1 ± 0 . 0 3 0 . 2 0 ± 0 . 0 2 0 . 2 7 ± 0 . 0 3
C16 : 0 1 4 . 3 0 ± 0 . 2 4 1 3 . 9 3 ± 0 . 4 4 1 4 . 2 8 ± 0 . 4 7 1 5 . 9 1 ± 0 . 4 8
C16 : 1 0 . 9 7 ± 0 . 0 3 0 . 8 6 ± 0 . 0 2 0 . 9 4 ± 0 . 0 5 1 . 0 7 ± 0 . 0 7
C18 : 0 3 . 1 2 ± 0 . 0 4 3 . 3 2 ± 0 . 1 4 3 . 2 1 ± 0 . 0 8 2 . 5 9 ± 0 . 1 1
C18 : 1 2 2 . 3 1 ± 0 . 2 4 2 3 . 0 3 ± 0 . 4 7 2 2 . 9 9 ± 0 . 2 3 2 1 . 8 5 ± 0 . 5 2
C18 : 2n6 5 7 . 6 0 ± 0 . 2 5 5 6 . 9 8 ± 0 . 3 2 5 7 . 0 0 ± 0 . 1 8 5 6 . 3 3 ± 0 . 8 3
C18 : 3n3 0 . 2 3 ± 0 . 0 1 0 . 2 9 ± 0 . 0 5 0 . 2 5 ± 0 . 0 4 0 . 3 7 ± 0 . 0 6
C20 : 0 0 . 3 7 ± 0 . 0 5 0 . 3 3 ± 0 . 0 4 0 . 2 8 ± 0 . 0 3 0 . 2 7 ± 0 . 0 8
C20 : 1 0 . 3 2 ± 0 . 0 3 0 . 4 1 ± 0 . 0 2 6 0 . 3 2 ± 0 . 0 5 0 . 3 3 ± 0 . 0 5
C20 : 2 0 . 2 0 ± 0 . 0 3 0 . 3 0 ± 0 . 0 4 0 . 2 1 ± 0 . 0 2 0 . 2 1 ± 0 . 0 3
C22 : 0 0 . 3 9 ± 0 . 0 4 0 . 5 3 ± 0 . 0 2 0 . 2 ± 0 . 0 1 0 . 3 ± 0 . 0 3
U/S4.444.454.494.13

M: mean ( 𝑛 = 3 ); SD: relative standard deviation; U/S: Unsaturation ratio.