## 2 Results and Discussion
### GC-MS Volatile Compounds Analysis
\begin{table}
\begin{tabular}{l c c c c c c c c c} \hline
**RT** & **Compound** & **LRI** & **BP1** & **BP2** & **BP3** & **BP4** & **BP5** & **BP6** & **BP7** \\ \hline
**3.1** & Hevanal & 768 & \(2.8\pm 1.8\) & \(2.3\pm 1.1\) & \(3.8\pm 0.2\) & \(16.1\pm 8.1\) & \(7.3\pm 1.1\) & \(8.6\pm 1.9\) & \(0.1\pm 0.9\) \\
**4.2** & 2-hexonal & 800 & \(1.1\pm 0.9\) & nd & \(0.8\pm 0.1\) & nd & nd & nd & nd \\
**5.0** & 1-hexonal & 849 & nd & nd & nd & nd & nd & \(4.1\pm 1.3\) & \(1.8\pm 0.1\) \\
**5.4** & Heplanal & 883 & \(0.5\pm 0.3\) & \(1.2\pm 0.1\) & \(0.4\pm 0.4\) & nd & nd & \(3.0\pm 0.7\) & \(1.4\pm 0.1\) \\
**6.1** & Methyl hexonate & 909 & \(0.3\pm 0.3\) & \(2.4\pm 1.3\) & \(0.9\pm 0.5\) & nd & nd & nd & nd \\
**7.3** & (_E.E._)-2+heptadiene-6-spnal & 943 & nd & nd & nd & nd & nd & nd & nd \\
**7.3** & Benzaldehyde & 944 & \(1.2\pm 0.5\) & nd & nd & nd & nd & nd \\
**8.1** & 1-octane-3-ol & 965 & nd & nd & nd & nd & \(1.8\pm 0.1\) & nd & \(0.3\pm 0.1\) \\
**8.2** & 6-Methyl-5-hepten-2-one & 970 & \(3.8\pm 1.4\) & \(3.3\pm 0.4\) & \(7.7\pm 0.8\) & \(3.9\pm 0.9\) & \(3.9\pm 0.3\) & \(7.6\pm 6.6\) & \(1.8\pm 0.2\) \\
**8.6** & 2-A+heptadiene-6-spnal & 998 & \(6.5\pm 2.1\) & \(2.8\pm 0.1\) & \(0.5\pm 0.4\) & nd & nd & \(2.4\pm 0.7\) & nd \\
**8.9** & Octanal & 988 & nd & nd & \(2.1\pm 1.4\) & \(4.3\pm 1.2\) & nd & \(6.0\pm 1.9\) & \(1.93\pm 1.2\) \\
**9.2** & 2-A+heptadiene (isomer) & 999 & nd & nd & \(7.6\pm 1.4\) & \(2.4\pm 0.8\) & nd & nd & nd \\
**9.9** & Hevanelveld & 1016 & nd & nd & nd & nd & \(2.1\pm 0.3\) & nd \\
**10.4** & 35.5-trimethyl-3-cyclohex-1-tone & 1026 & \(0.9\pm 0.1\) & nd & nd & nd & nd & nd \\
**11.7** & 35.5-octadecane-2-one & 1057 & \(10.4\pm 3.4\) & \(4.5\pm 0.8\) & nd & \(125.\pm 0.4\) & \(18.1\pm 1.1\) & \(5.6\pm 2.6\) & nd \\
**11.8** & Octanal & 1059 & nd & nd & nd & nd & nd & \(8.1\pm 1.3\) \\
**12.6** & 35.5-octation-2-one (isomer) & 1079 & nd & nd & \(7.7\pm 0.8\) & \(5.6\pm 0.8\) & \(7.9\pm 0.1\) & nd & nd \\
**13.0** & Linnal & 1086 & nd & nd & nd & nd & \(5.6\pm 0.9\) & nd \\
**13.0** & Nonanal & 1091 & \(2.7\pm 1.9\) & \(2.5\pm 2.4\) & \(116.6\pm 0.8\) & \(7.8\pm 2.6\) & \(7.3\pm 0.2\) & \(0.2\pm 0.2\) & \(66.9\pm 1.8\) \\
**13.4** & Phenylethylalcohol & 1097 & nd & nd & nd & nd & \(12.4\pm 0.4\) & nd & nd \\
**13.7** & Isophone & 1104 & nd & nd & nd & \(0.7\pm 0.6\) & nd & nd \\
**14.1** & Methyl octanoate & 1111 & \(1.7\pm 0.1\) & \(5.7\pm 4.2\) & \(4.8\pm 1.1\) & nd & nd & nd & nd \\
**15.6** & Nomanal & 1144 & nd & nd & nd & nd & \(1.8\pm 0.2\) & nd & nd \\
**16.2** & Nomanal & 1159 & nd & nd & nd & nd & nd & \(4.5\pm 1.7\) & \(2.6\pm 0.1\) \\
**17.3** & Ethyl octanoate & 1183 & \(5.4\pm 0.7\) & \(8.1\pm 3.7\) & nd & nd & nd & nd & nd \\
**17.7** & Decanal & 1191 & \(0.7\pm 0.2\) & nd & nd & nd & \(1.4\pm 0.1\) & \(6.5\pm 1.1\) & nd \\
**19.0** & Cis-wrench & 1219 & nd & nd & nd & \(1.9\pm 0.7\) & \(1.5\pm 0.7\) & nd & nd \\
**19.1** & Linaly anfranulate & 1223 & nd & nd & nd & nd & \(2.4\pm 0.4\) & nd \\
**20.3** & Ctrl & 1248 & nd & nd & nd & \(3.3\pm 0.4\) & \(2.2\pm 0.5\) & nd & nd \\
**21.4** & Thym & 1273 & nd & nd & nd & \(1.9\pm 0.3\) & \(1.6\pm 0.2\) & nd & nd \\
**22.6** & 3-(3-methyl-1-butenylylcyclohexene & 1299 & \(0.7\pm 0.7\) & nd & nd & nd & nd & nd \\
**22.9** & Methyl decanoate & 1307 & \(1.4\pm 0.3\) & \(7.4\pm 2.2\) & nd & nd & nd & nd & nd \\
**25.3** & N-Decanoic acid & 1360 & \(1.6\pm 0.8\) & nd & nd & nd & nd & nd & nd \\
**25.7** & Jasmone & 1370 & nd & \(4.8\pm 1.4\) & nd & nd & nd & nd & nd \\
**25.9** & Ethyl hexadecanoate & 1377 & nd & nd & nd & \(0.9\pm 0.1\) & nd & nd & nd \\ \hline \end{tabular}
\end{table} 
Table 4: Bee pollen volatile composition, obtained via GC-MS.