## 3 Results and Discussion
### In Vitro Antioxidant Activity (DPPH Free Radical Scavenging Activity)  
This assay was applied to determine the total antioxidant activity using antiradical tested molecules with the stable free radical DPPH to produce 1,1-diphenyl-2-picrylhydrazine. The principle of this assay is based on the discoloration due to a reduction in the antiradical substance [89]. The level of discoloration indicates the compounds' capacity to donate hydrogen or electrons to neutralize the free radicals [40]. This technique can be used to realize the antioxidant capacity of various compounds, including plant extracts, \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Common Name**} & \multicolumn{4}{c}{**Percentage of Fatty Acid Composition \%**} \\  & **Egypt** & & & & \\  & **(Mexeration)** & **Iraq (Soxhlet)** & **Sudan, (Soxhlet)** & **Syria (Soxhlet)** & **Turkey** \\ \hline Lauric acid & - & - & \(<\) 0.1 Pe * & - & - \\ Myristic acid & - & - & \(<\) 0.1 Pe & 0.04 n \({}^{\text{n}}\)\(\pm\) 0.01 & 0.1 c * \\ Palmitic acid & 2.74 pe & 3.1 n *, 3.0 pe & 5.7 pe \(\pm\) 0.02 & 3.84 n \({}^{\text{n}}\)\(\pm\) 0.05 & 5.6 c \\ Palmitic acid & 0.17 pe & 0.25 n & - & 0.23 n \({}^{\text{n}}\)\(\pm\) 0.01 & 0.5 c \\ Palmitvaconic acid & - & 0.17 n, 0.19 pe & - & - & - \\ Margaric acid & 0.06 pe & 0.04 n, 0.04 pe & - & - & - \\ Margaroleic acid & 0.06 pe & 0.04 n, 0.03 pe & - & - & - \\ Stearic acid & 1.73 pe & 1.96 n, 1.45 pe & 1.3 pe \(\pm\) 0.3 & 1.88 n \({}^{\text{n}}\)\(\pm\) 0.04 & 2.2 c \\ Oleic acid & 28.71 pe & 32.11 n *, 37.91 pe & 45 pe \(\pm\) 0.5 & 29.83 n \({}^{\text{n}}\)\(\pm\) 0.5 & 35.8 c \\ Cis-vacconic acid & - & - & - & 0.67 n \({}^{\text{n}}\)\(\pm\) 0.04 & - \\ Linoleic acid & 24.35 pe & 25.63 n *, 24.47 pe & 47 pe \(\pm\) 0.5 & 21.68 n \({}^{\text{n}}\)\(\pm\) 0.4 & 24.9 c \\ Linolelaidic acid & - & - & - & - & 22.6 c \\ \(\alpha\)-Linoleic acid & - & - & - & - & 3 c \\
6,9,11-octadecatrienoic acid & - & 34.00 n *, 32.04 pe & - & - & - \\ \(\alpha\)-eolesteric acid & - & 0.19 n, 0.18 pe & - & 40.71 n \(\pm\) 0.8 & - \\ \(\alpha\)-Linoleic acid & 0.37 pe & - & 0.1 pe \(\pm\) 0.02 & - & - \\ Arachidic acid & 0.73 pe & 0.28 n *, 0.27 pe & - & 0.33 n \({}^{\text{n}}\)\(\pm\) 0.01 & 0.5 c \\ Gadelaidic acid & - & 0.13 n, 0.12 pe & - & - & - \\ Gadoleic acid & 0.41 pe & - & - & 0.43 n \({}^{\text{n}}\)\(\pm\) 0.03 & 0.3 c \\ Eicosadienoic acid & - & - & - & 0.29 n \({}^{\text{n}}\)\(\pm\) 0.01 & 0.3 c \\ Timmodonic acid & 33.07 pe & - & - & - & - \\ Behenic acid & 0.72 pe & 0.08 n *, 0.06 pe & - & 0.4 n \({}^{\text{n}}\)\(\pm\) 0.01 & 0.3 c \\ Erucic acid & 6.74 pe & - & - & - & - \\ Lignoeceric acid & 0.14 pe & 0.06 n, 0.05 pe & - & - & 0.7 c \\ SFA & 6.12 & 5.62 n *, 4.87 pe & 7.2 & 6.49 n \(\pm\) 0.12 & 9.4 \\ MUFA & 36.09 & 32.7 n *, 38.25 pe & 45 \(\pm\) 0.5 & 31.16 n \(\pm\) 0.58 & 36.6 \\ PUFA & 57.79 & 59.82 n *, 56.69 pe & 47.1 n \(\pm\) 0.5 & 62.68 n \(\pm\) 1.21 & 52.1 \\ \hline \hline \end{tabular}  
* c superscript means extraction performed with cold press; n superscript means extraction performed with _n_-Hexane solvent; pe superscript means extraction performed with petroleum ether solvent.  
\end{table} 
Table 4: Comparison among the various studies content extracts of FAs.