## 2 Results
### Aroma Profile of the Ripe Berries of Two Varieties of Grapes
#### 2.1.2 Glycosidically Bound Aroma Compounds in Two Varieties  
Table 2 shows 23 glycosidically bound aroma compounds found in the two varieties, comprising six C6/C9 compounds, six straight-chain aliphatics, two branched-chain aliphatics, four aromatic compounds, two terpen, and three norisoprenoids. Of them, eight components had higher concentrations in 'Marselan' grapes, and only (_E_)-2-hexen-1-ol and benzyl alcohol had higher levels in 'Merlot'. Additionally, as for terpen and norisoprenoids, bound-form linalool, \(\alpha\)-terpineol, vitispirane A, and vitispirane B showed significantly higher concentrations in 'Marselan' grapes compared to 'Merlot'. However, no significant difference in the concentration of glycosylidically bound (_E_)-\(\beta\)-damascenone was observed between the two varieties.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Aroma Components** & **Retention** & **Standards** & **Quantitative** & \multicolumn{2}{c}{**Concentrations (\(\mathbf{\mathbf{\mathbf{\mathbf{\mathbf{\mathbf{\mathbf{\mathbf{\mathbf{\mathbf{\mathbf{ \mathbf{\mathbf{\mathbf{ \mathbf{ }}}}}}}}}}}}\) \\ \cline{2-5} \cline{5-5} Straight-chain aliphatics & & **Methods** & **Marselan** & **Merlot** \\ \hline
1-Octanal & 1005 & Octanal & A.Q. & 0.37 \(\pm\) 0.1 & 0.26 \(\pm\) 0.14 \\
4-Hexen-1-ol acetate & 1321 & (Z)-3-Hexenyl acetate & R.Q. & 3.29 \(\pm\) 0.35 & nd \\ (Z)-2-Penten-1-ol & 1317.1 & (Z)-2-Hexen-1-ol & R.Q. & 10.67 \(\pm\) 0.59 * & 6.77 \(\pm\) 1.79 \\ (Z)-2-Heptnal & 1190.6 & (Z)-2-Heptnal & A.Q. & 0.75 \(\pm\) 0.19* & 0.35 \(\pm\) 0.07 \\ (_E_)-2-Octenal & 1436.0 & (E)-2-Heptnal & R.Q. & 489,747.86 \(\pm\) & 411,913.44 \(\pm\) \\
1-Octen-3-ol & 1446.8 & 1-Octen-3-ol & A.Q. & 0.75 \(\pm\) 0.07 & 0.65 \(\pm\) 0.47 \\ (_E_,_E_)-2,4-Heptdienai & 1501.0 & (E,Z)-2,6-Nonadienal & R.Q. & 2.05 \(\pm\) 0.06 ** & 1.34 \(\pm\) 0.18 \\
1-Decanal & 1504.1 & Decanal & A.Q. & 0.45 \(\pm\) 0.03 & 0.33 \(\pm\) 0.1 \\ 1-Octanol & 1555.4 & 1-Octanol & A.Q. & 0.40 \(\pm\) 0.04 & 0.27 \(\pm\) 0.14 \\ (_E_)-2-Decenoic acid & 2271 & Decanoic acid & R.Q. & 0.34 \(\pm\) 0.08 & 0.25 \(\pm\) 0.02 \\ Aromatic compounds & & & & & \\ p-Cymene & 1278.1 & p-Cymene & A.Q. & 3.63 \(\pm\) 0.17 ** & 0.61 \(\pm\) 0.12 \\ Benzaldehyde & 1535.2 & Benzaldehyde & A.Q. & 24.31 \(\pm\) 5.27 * & 7.12 \(\pm\) 5.92 \\ Phenylacetaldehyde & 1655.8 & Phenylacetaldehyde & A.Q. & 120.39 \(\pm\) 22.98 * & 43.17 \(\pm\) 19.87 \\ Acetophenone & 1664.4 & Phenylacetaldehyde & R.Q. & 7.45 \(\pm\) 1.02 & 7.13 \(\pm\) 1.22 \\ Methyl salicylate & 1793.3 & Methyl salicylate & A.Q. & 0.99 \(\pm\) 0.11 & 1.20 \(\pm\) 0.04 * \\ Phenethyl alcohol & 1921.3 & Phenethyl alcohol & A.Q. & 56.33 \(\pm\) 1.6 ** & 11.59 \(\pm\) 3.45 \\ Phenol & 2015.8 & Phenol & A.Q. & 7.18 \(\pm\) 0.62 & 6.08 \(\pm\) 0.47 \\ Branched-chain & & & & & \\ aliphatics & & & & & \\
2-Ethylehexanol & 1486.6 & 2-Ethylehexanol & A.Q. & 0.87 \(\pm\) 0.15 & 0.77 \(\pm\) 0.15 \\ Terpenes & & & & & \\ \(\alpha\)-Terpinene & 1702.2 & Terpinolene & R.Q. & 4.25 \(\pm\) 0.24 ** & nd \\ \(\gamma\)-Terpinene & 1238.5 & Terpinolene & R.Q. & 3.48 \(\pm\) 0.31 ** & nd \\ Terpinolene & 1289.9 & Terpinolene & A.Q. & 2.72 \(\pm\) 0.09 ** & nd \\ \(\alpha\)-Terpineol & 1702.3 & \(\alpha\)-Terpineol & A.Q. & 1.94 \(\pm\) 0.37 ** & 0.30 \(\pm\) 0.1 \\ Terpinen-4-ol & 1608.2 & \(\alpha\)-Terpineol & R.Q. & 1.07 \(\pm\) 0.12 ** & 0.29 \(\pm\) 0.09 \\ Linalool & 1546.1 & Linalool & A.Q. & 4.10 \(\pm\) 0.49 * & 0.36 \(\pm\) 0.07 \\ L-Menthol & 1643.1 & \(\alpha\)-Terpineol & R.Q. & 1.68 \(\pm\) 0.18 & 1.65 \(\pm\) 0.03 \\ Norisoprenoids & & & & & \\ (_E_)-\(\beta\)-Damascenone & 1835.3 & \(\beta\)-Damascenone & A.Q. & 32.07 \(\pm\) 8.64 * & 10.40 \(\pm\) 1.97 \\ \(\alpha\)-Ionene & 1541.7 & \(\beta\)-Ionone & R.Q. & 1.39 \(\pm\) 0.13 ** & nd \\ \hline \hline \end{tabular} Note.: * \(p\) \(<\) 0.05; **_p_ \(<\) 0.01. nd: not detected; A.Q.: absolute quantification; R.Q.: relative quantification.  
\end{table}
Table 1: _Cont._