## 3 Results and Discussion
### Essential Oils Chemical Characterizations
They contain respectively 20.1, 19.0, 19.1% of myrce (characterized by spicy and balsamic herbal notes), 2.0, 2.5, 2.8% of (E)-\(\beta\)-farresene (citrus herbal notes), 18.3, 15.2, 24.9% of \(\alpha\)-humulene (wo woody notes), and 9.3, 10.1, 7.7% of \(\alpha\)-selinene (herbal notes), showing especially a spicy citrus and woody character (Table 6). Instead, the essential oil of the Corte hop contains 6.7% of myrcene, 0.1% of (E)-\(\beta\)-farresene, 5.4% of \(\alpha\)-humulene, and 25.9% of \(\alpha\)-selinene, thus it is characterized prevalently by herbal notes. This clustering of the Ajaccio, Oletta, and Patrimonio essential oils (Figure 2) could be explained by the specific environment conditions inherent to the coastal areas of Corsica, especially high temperatures, low rain content, medium to strong winds, and high salinity of soils (Table 1). The differentiation of the essential oil of Corte hops, grown in altitude and far from the coast, corroborates this view. The high presence of selinene in Corte genotypes, characterized by a humid environment, is in accord with the study of [PERSON] and coworkers [50], where European hops were found to be characterized by higher amounts of selinene compared to American hops. Moreover, this result is also in accord with the study of [PERSON] and collaborators [51] on Italian wild and cultivated hops, where a correlation was found between high selinene presence and wild Italian hops. The GC/MS analysis of the Tettnang cultivars and those transplanted in Corsica is shown in Appendix A. It reveals an evolution of the abundance, especially of four compounds from year 0 to year +1 after transplantation: \(\beta\)-pinene, \(\alpha\)-humulene, zingiberene, and linalool. The amount of these four compounds evolved in the same way for the three German hops grown in Corsica. The abundance of \(\beta\)-pinene (resinous and pipe aroma) and linalool (floral, citrus, sweet notes) decrease after planting, respectively from 2.0% to 0.9%, and 1.0% to 0.3% of the essential oils for the Cascade hops; from 1.5% to 1.2%, and 1.5% to 0.5% for the Smaragd hops; and from 1.3% to 0.7%, and 1.5% to 0.4% for the Tettnanger hops. The abundance of \(\alpha\)-humulene (woody notes), and zingiberene (spicy notes) increase after planting, respectively from 9.2% to 13.7%, and \(<\)0.1% to 5.1% of the essential oils for the Cascade hops; from 16.2% to 18.2%, and \(<\)0.1% to 7.1% for the Smaragd hops; and from 8.2% to 10.2%, and \(<\)0.1% to 7.9% for the Tettnanger hops. Similar results were found in a study [52] on the evaluation of the quality parameters of Cascade to the Sardinian environment; in the chemical composition of Sardinian Cascade oil was observed a low content in \(\beta\)-pinene and linalool, and a high percentage of \(\alpha\)-humulene, especially in the samples coming from the two coastal areas (Alghero and Orosei). As Sardinia is an island characterized by geographic and pedoclimatic conditions similar to Corsica, it is possible to assume a comparable oil composition and an analogous performance of the cultivars. This trend in the aromatic compound development highlights a modulation of the German hops to the Corsican coastal terror and its environmental conditions. The increase in zingiberene, characterized by strong organoleptic properties and efficiency in hop aggressor repellence [53], is a beneficial consequence of the German hops' acclimatization. Moreover, the comparison of Table 6 and Appendix A shows that the abundance of these four compounds tends toward that of the hops growing wild in coastal areas of Corsica (on average 0.3% for the \(\beta\)-pinene, 19.5% for the \(\alpha\)-humulene, 9.7% for the zingiberene, and 0.3% for the linalool). These results are supported by the dendrogram of the essential oil characterizations (Figure 2). Data of essential oils of German and Corsican (cultivars and wild) hops were used in the cluster analysis to characterize the hop samples (Figure 2). The resulted dendrogram indicates the presence of two clusters with 85% dissimilarity.