## 3 Results  
### Chemical Composition of Fresh Infloresences and Leaves (Unpowdered and Powdered)  
Using the SPME-GC-MS technique, thirty-six volatile compounds, listed in Table 1, were identified. In general, the chemical composition of the inflorescences was richer in components than that of the leaves. In fact, twenty-five and twenty-three molecules were detected in unpowdered and powdered inflorescences, respectively, compared to fifteen compounds found in both unpowdered and powdered leaves. Moreover, the quantity of sesquiterpenes was higher than that of monoterpenes in all the investigated samples. From a qualitative point of view, some compounds, such as 1-hepten-3-ol, styrene and \(\alpha\)-terpineol, were found only in the leaves, while some fatty acid esters, such as, hexanoic acid, 5-methyl-, methyl ester, propanoic acid, 2-methyl-, 2-methylbutylester, propanoic acid, 2-methyl-, 3-methylbutylester, butanoic acid, 3-methylbutyl ester, 6-methylheptanoic acid, methyl ester, pentanoic acid, 3-methylbutyl ester, octanoic acid, methyl ester, geranic acid methyl ester and decanoic acid, methyl ester as well as some sesquiterpenes, such as, \(\alpha\)-selinene, \(\gamma\)-cadinene, \(\delta\)-cadinene and \(\gamma\)-gurjunene, were characteristic only of the inflorescences. The main quantitative difference between the two matrices concerned the \(\beta\)-myrcene content which ranged from 20.5% to 37.9% for the inflorescences, and from 1.9% to 2.7% for the leaves. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{N\({}^{\circ}\)} & \multirow{2}{*}{**COMPONENT 1**} & \multirow{2}{*}{**LRI 2**} & \multirow{2}{*}{**LRI 3**} & \multicolumn{1}{c}{**Fresh I. 4**} & \multicolumn{1}{c}{**Fresh L. 5**} & \multicolumn{1}{c}{**Fresh I. 6**} & \multicolumn{1}{c}{**Fresh L. 7**} \\  & & & & **(Unpowdered)** & **(Unpowdered)** & **(Powdered)** & **(Powdered)** \\ \hline
1 & 1-hepten-3-ol & 862 & 869 & - & - & - & 0.5 \(\pm\) 0.02 \\
2 & styrene & 893 & 898 & - & 1.3 \(\pm\) 0.02 & - & - \\
3 & hexanoic acid, & 965 & 963 & - & - & 0.1 \(\pm\) 0.02 & - \\
4 & \(\beta\)-pinene & 988 & 986 & - & - & 0.9 \(\pm\) 0.02 & - \\
5 & \(\beta\)-myrcene & 991 & 987 & 37.9 \(\pm\) 0.31 & 2.7 \(\pm\) 0.02 & 20.5 \(\pm\) 0.02 & 1.9 \(\pm\) 0.02 \\  & propanoic acid, & & & & & & \\
6 & 2-methyl-, & 993 & 989 & 0.3 \(\pm\) 0.05 & - & - & - \\  & 2-methyl-, & 998 & 996 & 0.5 \(\pm\) 0.02 & - & 0.9 \(\pm\) 0.03 & - \\  & 3-methylbutyrate & & & & & & \\
8 & limone & 1028 & 1030 & 0.2 \(\pm\) 0.02 & - & 0.4 \(\pm\) 0.03 & 2.0 \(\pm\) 0.03 \\
9 & trans-\(\beta\)-ocimene & 1035 & 1040 & 0.1 \(\pm\) 0.02 & - & - & - \\  & butanoic & & & & & & \\
10 & acid,3-methylbutyl & 1052 & 1056 & - & - & 1.1 \(\pm\) 0.02 & - \\  & ester & & & & & & \\
11 & 6-methylheptanoic acid, & & & & & & \\ methyl ester & & & & & & \\  & pentanoic acid, & & & & & \\
12 & 3-methylbutyl ester & 1092 & 1090 & 0.1 \(\pm\) 0.02 & - & - & - \\
13 & 2-nonanone & 1096 & 1092 & 0.2 \(\pm\) 0.02 & - & 0.1 \(\pm\) 0.02 & - \\
14 & octanoic acid, methyl & 1128 & 1132 & - & - & 0.3 \(\pm\) 0.02 & - \\  & ester & & & & & \\
15 & \(\alpha\)-terpineol & 1175 & 1170 & - & 0.7 \(\pm\) 0.01 & - & 0.1 \(\pm\) 0.02 \\
16 & geranic acid methyl & 1305 & 1302 & 0.2 \(\pm\) 0.02 & - & - & - \\  & ester & & & & & & \\
17 & decanoic acid, methyl & & & & & \\
18 & \(\alpha\)-cubebene & 1355 & 1350 & 0.2 \(\pm\) 0.02 & - & 0.4 \(\pm\) 0.03 & 0.3 \(\pm\) 0.02 \\
19 & ylangene & 1380 & 1376 & 0.2 \(\pm\) 0.03 & - & - & - \\
20 & \(\alpha\)-copaene & 1384 & 1385 & 0.9 \(\pm\) 0.04 & 3.1 \(\pm\) 0.02 & - & 4.8 \(\pm\) 0.03 \\
21 & \(\beta\)-caryophyllene & 1442 & 1440 & 12.6 \(\pm\) 0.03 & 20.2 \(\pm\) 0.08 & 16.4 \(\pm\) 0.04 & 71.6 \(\pm\) 0.11 \\ \hline \hline \end{tabular}
\end{table}