## 3 Results and Discussion
### Essential Oils Chemical Characterizations  
The essential oils chemical profiles of the German and Corsican hops were characterized. The GC/MS analysis shows a similarity between the wild hops from Corsica (Table 6), but the abundance of the four compounds shows variation, dependent on the location: myrcene, (E)-\(\beta\)-farnesene, \(\alpha\)-humulene, and \(\alpha\)-selinene. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Compounds** & **LRI\({}^{\mathbf{a}}\)** & **RI\({}^{\mathbf{a}}\)** & **RIP** & **Ajaccio** & **Oletta** & **Patrimonio** & **Corte** \\ \hline \multicolumn{6}{c}{**Hydrocarbonates**} \\ \hline \(\beta\)-Pinene & 964 & 970 & 1110 & 0.3 & 0.4 & 0.1 & 0.3 \\
**Myrcene** & **981** & **976** & **1159** & **20.1** & **19.0** & **19.1** & **6.7** \\ p-Cymene & 1010 & 1011 & 1268 & 0.1 & 0.1 & - & 0.1 \\ Limonene & 1029 & 1020 & 1199 & 0.1 & 0.2 & 0.2 & 0.1 \\ \(\alpha\)-Ylangene & 1373 & 1375 & 1476 & 0.3 & 0.1 & 0.8 & - \\ \(\alpha\)-Copane & 1381 & 1379 & 1488 & - & 0.3 & 0.1 & 0.1 \\ Isocaryophyllene & 1402 & 1407 & 1571 & 0.2 & 0.1 & 0.1 & 0.5 \\ (E)-\(\beta\)-Caryophyllene & 1414 & 1424 & 1591 & 8.2 & 10.0 & 13.0 & 8.8 \\ \(\beta\)-Copaene & 1432 & 1431 & 1581 & 1.1 & 0.1 & 0.4 & 0.1 \\ (E)-\(\alpha\)-Bergamotene & 1432 & 1432 & 1580 & 1.4 & 0.1 & 0.2 & 0.2 \\
**(E)-\(\beta\)-Farnesene** & **1445** & **1448** & **1661** & **2.0** & **2.5** & **2.8** & **0.1** \\ \(\alpha\)**-Humulene** & **1455** & **1456** & **1665** & **18.3** & **15.2** & **24.9** & **5.4** \\
4.5-Di-epi-aristolochene & 1469 & 1467 & 1665 & 1.0 & 0.5 & 0.5 & 1.2 \\ \(\gamma\)-Muurolene & 1477 & 1471 & 1681 & 1.7 & - & 2.9 & - \\ \(\gamma\)-Himadalene & 1479 & 1479 & 1693 & 0.2 & 3.6 & - & 1.4 \\ \(\beta\)-Selinene & 1485 & 1483 & 1712 & 6.7 & 10.0 & 2.6 & 26.8 \\ Zingbierene & 1493 & 1489 & 1717 & 11.7 & 11.6 & 5.8 & 1.6 \\ Valencene & 1495 & 1497 & 1719 & 3.1 & - & 1.5 & - \\ \(\alpha\)**-Selinene** & **1505** & **1494** & - & **9.3** & **10.1** & **7.7** & **25.9** \\ (E.E) \(\alpha\)-Farnesene & 1506 & 1498 & 1744 & 0.3 & - & 0.1 & 0.1 \\ \(\gamma\)-Cadinene & 1513 & 1507 & 1752 & 2.1 & 0.4 & 1.2 & 0.1 \\ \(\delta\)-Cadinene & 1524 & 1516 & 1752 & 0.1 & 1.1 & 0.1 & 0.1 \\ \(\gamma\)-Bisabolene & 1529 & & & 1.9 & 2.3 & 0.2 & 0.1 \\ \(\alpha\)-Cadinene & 1538 & 1535 & 1743 & 0.8 & 0.1 & 0.7 & 0.1 \\ \hline \multicolumn{6}{c}{**Alcohals**} \\ \hline Linalool & 1087 & 1081 & 1544 & 0.3 & 0.1 & 0.4 & 0.6 \\ \(\alpha\)-Terpineol & 1179 & 1179 & 1700 & 0.1 & - & 0.5 & 0.1 \\
8-caryolarol & 1562 & 1559 & 2044 & 0.1 & 0.1 & 0.2 & 0.2 \\ Viridiflorol & 1593 & 1591 & 2089 & 0.1 & - & 1.7 & - \\ Humulol & 1601 & 1588 & 2165 & 0.5 & - & 0.5 & 0.8 \\ Zingbierend 1 & 1614 & 1599 & 2109 & 0.3 & 0.1 & 0.3 & 0.1 \\ Zingbierend 2 & 1620 & 1613 & 2190 & 0.3 & 0.1 & 0.2 & 0.1 \\ \(\alpha\)-Cadinol & 1642 & 1641 & 2231 & 0.7 & 1.2 & 1.2 & 2.2 \\ Eudesm-11-en-4\(\alpha\)-ol & 1651 & 1642 & 2241 & 0.3 & 2.3 & 1.1 & 3.1 \\ \(\alpha\)-Bisabolol & 1680 & 1672 & 2217 & 0.6 & - & 0.3 & 0.1 \\ \hline \multicolumn{6}{c}{**Ketones**} \\ \hline
2-nonanone & 1091 & 1070 & 1388 & 0.4 & 0.4 & - & 0.1 \\
2-decanone & 1172 & 1176 & 1495 & 0.3 & 0.5 & - & - \\
2-undecanone & 1291 & 1273 & 1592 & 1.1 & 2.0 & 0.8 & 0.3 \\
2-dodecanone & 1371 & 1385 & 1711 & 0.1 & 0.3 & 0.1 & 0.2 \\
2-tetradanone & 1576 & 1580 & 1909 & 0.4 & 0.1 & 0.2 & 0.3 \\ (Z) 2-pentadec-6-enone & 1652 & 1647 & & 0.1 & 0.8 & - & 0.8 \\ \hline \multicolumn{6}{c}{**Aldehydes**} \\ \hline Nonanal & 1084 & 1083 & 1394 & 0.2 & 0.9 & 0.7 & 0.1 \\ Decanal & 1184 & 1185 & 1498 & 0.1 & 0.1 & 0.1 & - \\ Geranial & 1242 & 1244 & 1731 & 0.2 & 0.1 & 0.3 & 0.1 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Essential oils composition of the wild Corsican hops by GC/MS. The essential oil chemical profiles of Ajaccio, Oletta and Patrimonio are very similar.