# Effects of the Extraction Technology on Pomegranate Juice Quality
## 3 Results and Discussion
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline \hline
**Compounds** & **RT** & **RI** & **T1** & **T2** & **T3** & **T4** & **T5** & **T6** & **T7** & **T8** & **T9** & **P** \\ \hline
**Esters (6)** & & & & & & & & & & & & & \\ Ethyl acetate 1 & 4.39 & 744.44 & nd & nd & nd & nd & nd & nd & nd & 1.1 b & 14.0 a & nd & *** \\ Heyl isobutyrate & 21.22 & 1717.95 & nd & nd & nd & nd & nd & nd & 2.3 a & 0.3 b & nd & *** \\
3-Methyl butyl acetate & 21.84 & 1770.94 & nd & nd & nd & nd & nd & nd & 1.91 & nd & - \\ Methyl dihydroxyamonate & 22.57 & 1835.14 & 3.4 a & 3.2 a & 3.3 a & 2.9 b & 2.3 c & 1.2 d & 1.2 d & 1.1 d & ** \\ Ironmonocarbonyl & 26.58 & \(>\)2000 & 1.9 a & 1.9 a & 1.9 a & 1.3 a & 0.5 b & 0.5 b & nd & nd & *** \\ Methyl salisylate & 27.22 & \(>\)2000 & 1.8 a & 1.0 a & 1.7 a & 1.6 a & 0.6 b & 0.6 b & 0.5 b & nd & nd & *** \\ \hline
**Aldehydes (6)** & & & & & & & & & & & & \\ Hexanal 1 & 8.17 & 1042.78 & 0.6 e & 0.8 e & 0.7 e & 0.9 e & 1.0 e & 1.3 cd & 1.5 cd & 3.5 b & 5.7 a & ** \\ (E)-2-Hexen-1-al & 12.20 & 1197.33 & nd & nd & nd & nd & nd & 0.8 a & nd & 0.8 a & NS \\ Nonanal 1 & 16.01 & 1370.88 & nd & nd & nd & nd & 0.3a & 0.3 a & 0.4 a & nd & nd & NS \\
2-4-Hexen-al & 17.01 & 1425.00 & nd & nd & nd & nd & nd & 0.8 a & nd & 0.8 a & NS \\ Benzaldehyde 1 & 20.52 & 1662.02 & nd & nd & nd & nd & nd & 0.6 & nd & nd & - \\ Phenylacetaldehyde & 23.40 & 1910.58 & 0.9 c & 1.0 c & 1.3 b & 1.4 b & 2.9 a & 2.7 a & 1.5 b & 0.9 c & 3.1 a & ** \\ \hline
**Ketones (4)** & & & & & & & & & & & & \\
6-Methyl-5-heptern-2-one & 14.71 & 1305.53 & nd & nd & nd & nd & nd & nd & 0.3 & nd & - \\
2-Nonanone & 16.08 & 1412.50 & 1.1 a & 1.1 a & 1.1 a & 0.9 a & nd & nd & nd & 0.3 b & 0.8 a & * \\ \(\mathrm{p}\)-Menth-1-en-3-one & 16.92 & 1419.64 & 0.2 a & 0.3 a & 0.4 a & 0.4 a & nd & nd & 0.4 a & nd & 0.4 a & NS \\ \(\mathrm{s}\) semicarkane & & & & & & & & & & & & \\
6-Methyl-1-\(\
u\)-ionne & 21.37 & 1730.77 & nd & nd & nd & nd & nd & nd & nd & 0.3 & - \\ \hline
**Acids (3)** & & & & & & & & & & & & & \\
3-Methyl butanoic acid & 22.25 & 1806.31 & 0.3 b & 0.2 b & 0.3 b & 0.4 b & nd & nd & nd & 0.8 a & nd & * \\ Octanoic acid 1 & 23.38 & 1908.65 & nd & nd & nd & nd & nd & nd & nd & 1.3 b & nd & - \\ Decanoic acid 1 & 25.05 & 2067.29 & nd & nd & nd & nd & nd & nd & 1.0 b & nd & 1.7 a & ** \\ \hline
**Phenolic compounds (6)** & & & & & & & & & & & & & \\ Styrene (Cinnananan) & 12.98 & 1230.17 & 3.9a & 3.8 a & 3.7 a & 3.0 b & 2.5 c & 2.2 c & nd & 0.7 d & 0.5 d & ** \\ Methyl(1-methylphenyl)-benzene & 18.28 & 1500.60 & nd & nd & 0.30 c & 0.40 c & 0.6 b & 0.65 b & 0.80 a & 0.90 a & nd & * \\
2-3-Dimethyl oxirane & 18.46 & 1513.10 & 0.8 a & 1.0 a & 0.9 a & 0.7 a & nd & nd & 0.3 b & nd & nd & * \\
6-Methyl-1-2-phenylindole & 20.57 & 1665.98 & nd & nd & nd & nd & 0.9 a & 0.4 b & nd & nd & 0.4 b & * \\ Guicaool & 25.36 & 2906.26 & 0.8 b & 1.0 b & 0.9 b & 1.0 b & 1.1 b & 0.9 b & 0.8 b & 1.1 b & 1.8 a & * \\ Methyl isoenenool & 38.08 & 2000 & nd & nd & nd & nd & 2.0 a & 2.1 a & 1.4 c & 1.0 c & 1.9 b & ** \\ \hline \hline \end{tabular} Note: Mean values (\(n=6\)) followed by different letters in the same row indicate significant differences (\(p\leq 0.05\)) for the juice or pongaranite fruits; significant difference at values \(\eta>0.005\); \(\eta>0.001\); \(\eta>0.001\); \(\eta>0.001\); and \(\eta\) not detected; NS: not significant; RI: retention index based on identified compound retention times (KIS) calculated from linear equation between each pair of straight alkanes (C5-C23). 1 Compounds verified with authentic standards. All compounds were also considered to be tentative (based on the mass spectroscopy libraries, Wiley7n.1 and Nist(07.1).)  
\end{table} 
Table 3: Mean contents (relative percentages) of the Volatile Organic Compounds (VOCs).