## 3 Results and Discussion
### EO Chemical Composition

Table 2: Percentage of essential oil (EO) composition from Azorean _Cryptomeria japonica_ female cones (FCs), male cones (MCs), leaves, and foliage. The major compounds (\(\geq\)4%) identified in the FC EO were \(\alpha\)-pinene (45%), \(\beta\)-eudesmol (7%), \(\alpha\)-eudesmol (6%), sabinene, elemol, terpinen-4-ol, and \(\gamma\)-eudesmol (4% each), while those from MC EO were \(\alpha\)-pinene (38%), terpinen-4-ol (12%), sabinene (6%), \(\gamma\)-terpinene, \(\beta\)-myrccene, and phyllocladene (5% each). On the other hand, leaf EO and foliage EO shared the same major compounds (\(\geq\)4%): \(\alpha\)-pinene (26 vs. 17%), sabinene (14 vs. 8%), elemol (12 vs. 14%), phyllocladene (7 vs. 12%), \(\alpha\)-eudesmol (5 vs. 6%), \(\beta\)-eudesmol (4 vs. 5%), and \(\gamma\)-eudesmol (both 4%). In comparison with previous reports [22] on foliage EOs obtained by SD from Azorean \(C\). _japonic_ samples, the terpenoid compounds including \(\alpha\)-pinene, sabinene, elemol, \(\alpha\)-eudesmol, and phyllocladene were also clearly the most abundant constituents of these EOs. Our results also revealed that \(\alpha\)-pinene (17-45%) dominated in all the studied EOs and decreased as follows: FC EO > MC EO > leaf EO > foliage EO. Interestingly, phyllocladene content (2-12%) displayed the opposite trend. Similarly, as observed for \(\alpha\)-pinene, the terpinen-4-ol content (3-12%) decreased as follows: MC EO > FC EO > foliage EO > leaf EO, whereas the elemol content (2-14%) seems to vary in an inverse way to \(\alpha\)-pinene, decreasing as follows: foliage EO > leaf EO > FC EO > MC EO. These results agree with what was found and reported from previous studies in [PERSON] et al. [22]. In fact, their research [22] also stated that the ratio between the EO main compounds seemed to be mainly determined by the type of plant material (branches and foliage with more or less strobili vs. wood). Overall, it should be highlighted that monoterpene hydrocarbons constituted the major fraction in all the studied EOs (38-71% of the total EOs), decreasing as follows: MC EO > FC EO > leaf EO > foliage EO, which is a similar order to the one reported for \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Components**} & \multirow{2}{*}{**RI**} & \multicolumn{5}{c}{**Sample**} \\ \cline{3-6}  & & **FC EO** & **MC EO** & **Leaf EO** & **Foliage EO** \\ \hline \(\beta\)-Caryophyllene oxide & 1561 & t & t & t \\ Anhydroopolanone & 1576 & t & t & 0.1 & t \\
10-epi-\(\gamma\)-Eudesmol & 1593 & t & 1.0 & t & 0.4 \\ \(\gamma\)-Eudesmol & 1609 & 3.5 & 1.2 & 3.5 & 3.6 \\
7-Cadinol & 1616 & 0.1 & t & 0.6 & 1.2 \\ \(\beta\)-Eudesmol & 1620 & 7.1 & 1.0 & 3.8 & 5.2 \\ \(\delta\)-Cadinol & 1621 & t & t & t & t \\ \(\alpha\)-Cadinol & 1630 & 0.1 & t & 0.1 & 0.4 \\ \(\alpha\)-Eudesmol & 1634 & 5.9 & 1.2 & 5.1 & 6.3 \\ Rimuene & 1814 & t & t & t & t \\ Isopimara-9(11), 15-diene & 1821 & t & t & 0.2 & 0.2 \\ Isokaurene 1 & 1951 & t & 0.1 & 1.0 & 0.5 \\ Sandaracoipma-8(14), 15-diene & 1956 & t & 0.7 & 0.2 & 0.5 \\ Isophyllocladene 1 & 1956 & t & t & t & t \\ Phyllocladene & 2006 & 2.0 & 4.5 & 7.4 & 11.6 \\ Kaurene & 2044 & t & t & t & 0.6 \\ Abietatriene & 2045 & t & t & t & 0.1 \\ Abietadiene & 2060 & t & t & t & t \\ Nezukol 1 & 2176 & 0.6 & 0.4 & 1.0 & 3.3 \\ \% Identification & 92.0 & 97.6 & 96.6 & 93.7 \\ \% Grouped components & & & & & \\ Monoterpene hydrocarbons & 59.6 & 70.8 & 54.9 & 37.9 \\ Oxygen-containing monoterepenes & 5.7 & 14.5 & 4.1 & 5.5 \\ Sesquiiterpene hydrocarbons & 3.3 & 0.2 & 2.7 & 2.1 \\ Oxygen-containing sesquiterpenenes & 20.8 & 6.4 & 25.1 & 31.4 \\ Diterpene hydrocarbons & 2.0 & 5.3 & 8.8 & 13.5 \\ Oxygen-containing diterpenenes & 0.6 & 0.4 & 1.0 & 3.3 \\ \hline \hline \end{tabular} RI–Retention index calculated relative to C\({}_{9}\)–C\({}_{22}\)\(n\)-alkanes on the DB-1 column. Standard error (SE) \(<\) 0.7% for compounds with percentage \(<\) 30%. For compounds \(>\) 30%, SE \(<\) 2%. 1 Identification based on mass spectra only t—trace (\(<\)0.05%).  
\end{table} 
Table 2: _Cont._\(\alpha\)-pinene content.