## 2 Results and Discussion
### Extraction Temperature
\begin{table}
\begin{tabular}{c c c c c c} \hline
**RT \({}^{a}\)** & **RI \({}^{b}\)** & **Compound** & **PDMS** & **CAR/PDMS** & **DVB/CAR/PDMS** \\ \hline \multicolumn{5}{c}{**Alcohols**} \\
7.27 & 680 & 1-Penten-3-ol & 0.39 \(\pm\) 0.05 \({}^{c}\) & N.D. & 6.09 \(\pm\) 1.14 \\
8.57 & 725 & 3-Methyl-1-butanol & N.D. & 1.12 \(\pm\) 0.06 & N.D. \\
8.84 & 734 & 2-Pentyn-1-ol & N.D. & 0.85 \(\pm\) 0.18 & 0.22 \(\pm\) 0.03 \\
9.53 & 752 & (Z)-2-Penten-1-ol & N.D. & 8.26 \(\pm\) 0.14 & 1.56 \(\pm\) 0.63 \\
12.02 & 827 & 2-Hexyn-1-ol & 0.49 \(\pm\) 0.06 & N.D. & 7.51 \(\pm\) 0.79 \\
16.59 & 981 & 1-Octen-3-ol & 55.85 \(\pm\) 9.49 & 386.22 \(\pm\) 13.22 & 335.81 \(\pm\) 26.62 \\
19.43 & 1068 & (E)-2-Octen-1-ol & N.D. & 11.42 \(\pm\) 8.32 & N.D. \\ \hline \multicolumn{5}{c}{**Aldehydes**} \\
4.75 & & 2-Propenal & N.D. & 0.45 \(\pm\) 0.04 & 1.10 \(\pm\) 0.19 \\
5.71 & 595 & Butanal & 0.04 \(\pm\) 0.00 & 0.34 \(\pm\) 0.11 & 0.28 \(\pm\) 0.06 \\
6.66 & 645 & 2-Butenal & N.D. & 0.92 \(\pm\) 0.06 & 0.47 \(\pm\) 0.01 \\
7.62 & 700 & Pentanal & N.D. & N.D. & 0.26 \(\pm\) 0.04 \\
9.14 & 742 & 2-Pentenal & 0.19 \(\pm\) 0.06 & 20.29 \(\pm\) 4.31 & 8.31 \(\pm\) 1.68 \\
10.48 & 777 & 3-Hexenal & 3.14 \(\pm\) 0.93 & 275.96 \(\pm\) 42.84 & 270.77 \(\pm\) 31.30 \\
10.60 & 779 & Hexanal & 3.68 \(\pm\) 0.86 & 192.41 \(\pm\) 3.52 & 12.13 \(\pm\) 1.27 \\
12.40 & 837 & (E)-2-Hexenal & 25.72 \(\pm\) 7.04 & 975.18 \(\pm\) 40.25 & 332.79 \(\pm\) 10.45 \\
13.86 & 896 & Heptional & N.D. & 1.13 \(\pm\) 0.02 & 0.22 \(\pm\) 0.11 \\
14.14 & 908 & (_E,E_)-2,4-Hexa & N.D. & 48.24 \(\pm\) 0.89 & 11.00 \(\pm\) 1.45 \\
16.08 & 967 & Benzaldehydehyde & N.D. & 0.65 \(\pm\) 0.10 & 0.49 \(\pm\) 0.05 \\
17.64 & 1013 & (_E,E_)-2,4-Heptadienal & 0.09 \(\pm\) 0.01 & 2.53 \(\pm\) 0.26 & 1.32 \(\pm\) 0.14 \\
18.80 & 1049 & Benzeneacetaldehyde & N.D. & 0.77 \(\pm\) 0.18 & 0.66 \(\pm\) 0.06 \\
20.62 & 1106 & Nonanal & 0.12 \(\pm\) 0.02 & 0.42 \(\pm\) 0.03 & 0.63 \(\pm\) 0.04 \\ \hline \multicolumn{5}{c}{**Ketones**} \\
4.78 & & 2-Propanone & 0.22 \(\pm\) 0.08 & 1.08 \(\pm\) 0.08 & 5.60 \(\pm\) 0.82 \\
5.65 & 587 & 2,3-Butanedione & N.D. & 0.66 \(\pm\) 0.16 & 0.65 \(\pm\) 0.10 \\
7.32 & 683 & 1-Penten-3-one & 0.82 \(\pm\) 0.04 & 85.48 \(\pm\) 10.26 & 28.95 \(\pm\) 6.68 \\
7.55 & 696 & 3-Pentanone & N.D. & 128.27 \(\pm\) 20.89 & 2.02 \(\pm\) 0.44 \\
16.42 & 978 & 1-Octen-3-one & 3.02 \(\pm\) 1.22 & 84.21 \(\pm\) 38.37 & 87.53 \(\pm\) 10.67 \\
20.29 & & 3,5-Octaiden-2-one & N.D. & 0.23 \(\pm\) 0.05 & N.D. \\ \hline \multicolumn{5}{c}{**Terpenoids**} \\
5.02 & 508 & Isoprene & N.D. & 0.65 \(\pm\) 0.15 & 0.34 \(\pm\) 0.04 \\
18.31 & 1034 & (+)-(R)-Limonene & N.D. & N.D. & 0.34 \(\pm\) 0.01 \\
19.66 & 1075 & _cis_-Linalool oxide & N.D. & N.D. & 0.47 \(\pm\) 0.07 \\
20.48 & 1100 & \(\beta\)-Linalool & N.D. & N.D. & 0.51 \(\pm\) 0.01 \\
3.22 & 1189 & _p_-Menth-1-en-4-ol & N.D. & N.D. & 0.66 \(\pm\) 0.06 \\
23.62 & 1203 & \(\alpha\)-Terpinol & N.D. & N.D. & 0.13 \(\pm\) 0.01 \\
24.38 & 1229 & \(\beta\)-Cyclocitral & 0.13 \(\pm\) 0.05 & 0.43 \(\pm\) 0.07 & 0.20 \(\pm\) 0.03 \\
28.83 & 1388 & \(\beta\)-Damascenone & 0.11 \(\pm\) 0.03 & N.D. & 0.29 \(\pm\) 0.01 \\ \hline \multicolumn{5}{c}{**Others**} \\
5.82 & 598 & 2-Methylfuran & N.D. & 0.45 \(\pm\) 0.25 & N.D. \\
7.66 & 701 & 2-Ethylfuran & 1.00 \(\pm\) 0.44 & 109.48 \(\pm\) 8.14 & 6.52 \(\pm\) 0.59 \\
12.76 & 893 & 3-Ethylthiophene & 0.28 \(\pm\) 0.09 & 199.94 \(\pm\) 25.38 & 4.12 \(\pm\) 0.54 \\
15.91 & 960 & 5-Ethyl-2(5H)-furanone & N.D. & 34.15 \(\pm\) 6.35 & 25.34 \(\pm\) 4.38 \\
17.31 & 1003 & 3-Hexen-1-ol acetate & 0.36 \(\pm\) 0.01 & 3.67 \(\pm\) 0.15 & 1.96 \(\pm\) 0.20 \\
24.19 & 1222 & Iorene & N.D. & N.D. & 0.09 \(\pm\) 0.01 \\
31.42 & 1488 & \(\beta\)-Ionone & 1.51 \(\pm\) 0.47 & 0.78 \(\pm\) 0.17 & 1.14 \(\pm\) 0.16 \\ \multicolumn{5}{c}{Total known metabolites} & 19 & 32 & 38 \\ \multicolumn{5}{c}{Total volatile metabolites} & 48 \(\pm\) 3 & 99 \(\pm\) 8 & 97 \(\pm\) 5 \\ \hline \end{tabular} \({}^{a}\) Retention time (min). \({}^{b}\) Retention index. \({}^{c}\) Mean area (\(\times 10^{6}\)) \(\pm\) S.D. of three replicates; N.D., not detected.  
\end{table}