## 3 Results and Discussion
### Free Volatile Aroma Compounds in Fresh and Dehydrated Grapes
\begin{table}
\begin{tabular}{c c c c c c} \hline \multirow{2}{*}{**Compound**} & \multirow{2}{*}{**Abbreviation**} & \multicolumn{3}{c}{**Concentration (ug/L)**} & \multirow{2}{*}{**\(p\)-Value**} \\ \cline{3-3} \cline{5-6}  & & **Fresh Grapes** & & & \\ \hline
2-methyl-1-propanol & A1 & 0.26 \(\pm\) 0.12 \({}^{\,\rm a}\) & 0.78 \(\pm\) 0.06 \({}^{\,\rm b}\) & n.d. \({}^{\,\rm a}\) & \(<\)0.05 \\
1-butanol & A2 & 0.53 \(\pm\) 0.17 \({}^{\,\rm a}\) & 3.45 \(\pm\) 0.07 \({}^{\,\rm b}\) & 0.57 \(\pm\) 0.34 \({}^{\,\rm a}\) & \(<\)0.05 \\
3-methyl-1-butanol & A3 & 17.11 \(\pm\) 7.51 \({}^{\,\rm a}\) & 42.54 \(\pm\) 1.57 \({}^{\,\rm b}\) & 28.06 \(\pm\) 0.83 \({}^{\,\rm a}\) & 0.281 \\
2-methyl-1-butanol & A4 & 0.72 \(\pm\) 0.27 \({}^{\,\rm a}\) & 1.59 \(\pm\) 0.05 \({}^{\,\rm b}\) & 0.89 \(\pm\) 0.67 \({}^{\,\rm a}\) & 0.144 \\
2-hexen-1-ol & A5 & 21.98 \(\pm\) 10.16 \({}^{\,\rm a}\) & 56.74 \(\pm\) 20.80 & 0.24 \(\pm\) 0.21 \({}^{\,\rm b}\) & \(<\)0.05 \\
1-hexanol & A6 & 50.68 \(\pm\) 8.97 \({}^{\,\rm a}\) & 89.16 \(\pm\) 6.76 \({}^{\,\rm b}\) & 0.46 \(\pm\) 0.65 \({}^{\,\rm b}\) & \(<\)0.05 \\ benzyl alcohol & A7 & 0.18 \(\pm\) 0.06 \({}^{\,\rm a}\) & 0.11 \(\pm\) 0.01 \({}^{\,\rm a}\) & 0.59 \(\pm\) 0.04 \({}^{\,\rm b}\) & \(<\)0.05 \\
2-phenylethanol & A8 & 0.03 \(\pm\) 0.02 \({}^{\,\rm a}\) & n.d. & 0.11 \(\pm\) 0.15 \({}^{\,\rm b}\) & 0.272 \\
2 alcohols & Alcohols & 91.94 \(\pm\) 0.57 \({}^{\,\rm a}\) & 194.37 \(\pm\) 9.78 \({}^{\,\rm b}\) & 30.93 \(\pm\) 21.58 \({}^{\,\rm b}\) & \(<\)0.05 \\ \hline ethyl acetate & E1 & 14.21 \(\pm\) 5.84 \({}^{\,\rm a}\) & 21.68 \(\pm\) 0.35 \({}^{\,\rm a}\) & 26.98 \(\pm\) 6.6 \({}^{\,\rm a}\) & 0.226 \\ ethyl lactate & E2 & 0.46 \(\pm\) 0.07 \({}^{\,\rm a}\) & 0.35 \(\pm\) 0.01 \({}^{\,\rm a}\) & 0.32 \(\pm\) 0.4 \({}^{\,\rm a}\) & \(<\)0.05 \\ isoamyl acetate & E3 & 1.04 \(\pm\) 1.44 \({}^{\,\rm a}\) & 0.23 \(\pm\) 0.09 \({}^{\,\rm b}\) & 0.19 \(\pm\) 0.03 \({}^{\,\rm a}\) & 0.629 \\ ethyl hexanoate & E4 & 0.06 \(\pm\) 0.03 \({}^{\,\rm a}\) & 0.25 \(\pm\) 0.04 \({}^{\,\rm b}\) & 0.09 \(\pm\) 0.02 \({}^{\,\rm b}\) & \(<\)0.05 \\ hexyl acetate & E5 & 0.12 \(\pm\) 0.02 \({}^{\,\rm a}\) & 0.46 \(\pm\) 0.03 \({}^{\,\rm b}\) & 0.05 \(\pm\) 0.02 \({}^{\,\rm b}\) & \(<\)0.05 \\ ethyl octanoate & E6 & 0.01 \(\pm\) 0.02 \({}^{\,\rm a}\) & n.d. & 0.11 \(\pm\) 0.03 \({}^{\,\rm b}\) & \(<\)0.05 \\
2-phenyl-ethyl acetate & E7 & 0.01 \(\pm\) 0.02 \({}^{\,\rm a}\) & n.d. & 0.02 \(\pm\) 0.03 \({}^{\,\rm a}\) & 0.272 \\ ethyl nonanoate & E8 & n.d. & n.d. & 0.02 \(\pm\) 0.03 \({}^{\,\rm a}\) & 0.272 \\ ethyl decanoate & E9 & n.d. & n.d. & n.d. & - \\ \(\Sigma\) esters & Esters & 15.91 \(\pm\) 6.41 \({}^{\,\rm a}\) & 22.97 \(\pm\) 0.31 \({}^{\,\rm a}\) & 27.78 \(\pm\) 6.45 \({}^{\,\rm a}\) & 0.252 \\ \hline \(\alpha\)-pinene & T1 & n.d. & n.d. & n.d. & - \\ mycrene & T2 & 0.30 \(\pm\) 0.11 \({}^{\,\rm a}\) & 0.15 \(\pm\) 0.01\({}^{\,\rm a}\) & 0.15 \(\pm\) 0.04 \({}^{\,\rm a}\) & 0.737 \\ o-cymene & T3 & 0.33 \(\pm\) 0.10 \({}^{\,\rm a}\) & 1.16 \(\pm\) 0.03 \({}^{\,\rm b}\) & 0.15 \(\pm\) 0.03 \({}^{\,\rm a}\) & \(<\)0.05 \\ linalool oxide & T4 & 3.04 \(\pm\) 0.96 \({}^{\,\rm a}\) & 4.77 \(\pm\) 0.32 \({}^{\,\rm b}\) & 4.86 \(\pm\) 0.05 \({}^{\,\rm a}\) & 0.737 \\ linalool & T5 & 3.81 \(\pm\) 2.09 \({}^{\,\rm a}\) & 1.63 \(\pm\) 0.20 \({}^{\,\rm a}\) & 1.26 \(\pm\) 0.35 \({}^{\,\rm a}\) & 0.213 \\ _cis_-limonene epoxide & T6 & 0.52 \(\pm\) 0.28 \({}^{\,\rm a}\) & 0.23 \(\pm\) 0.19 \({}^{\,\rm a}\) & 5.93 \(\pm\) 1.09 \({}^{\,\rm b}\) & \(<\)0.05 \\ _trans_-limonene epoxide & T7 & 2.12 \(\pm\) 0.84 \({}^{\,\rm a}\) & 2.54 \(\pm\) 0.21 \({}^{\,\rm a}\) & 6.35 \(\pm\) 1.17 \({}^{\,\rm b}\) & \(<\)0.05 \\ terpinen-4-ol & T8 & 0.24 \(\pm\) 0.15 \({}^{\,\rm a}\) & 7.67 \(\pm\) 0.2 \({}^{\,\rm b}\) & 0.13 \(\pm\) 0.10 \({}^{\,\rm a}\) & \(<\)0.05 \\ \(\alpha\)-terpineol & T9 & 0.38 \(\pm\) 0.38 \({}^{\,\rm a}\) & 0.35 \(\pm\) 0.03 \({}^{\,\rm a}\) & 0.36 \(\pm\) 0.17 \({}^{\,\rm a}\) & 0.926 \\ citroncell & T10 & 0.05 \(\pm\) 0.01 \({}^{\,\rm a}\) & 0.06 \(\pm\) 0.02 \({}^{\,\rm a}\) & 0.05 \(\pm\) 0.06 \({}^{\,\rm a}\) & 0.636 \\ nerol & T11 & 0.03 \(\pm\) 0.04 \({}^{\,\rm a}\) & 0.06 \(\pm\) 0.01 \({}^{\,\rm a}\) & 0.04 \(\pm\) 0.06 \({}^{\,\rm a}\) & 0.675 \\ linalool acetate & T12 & 0.03 \(\pm\) 0.02 \({}^{\,\rm a}\) & n.d. & n.d. &