## 3 Results and Discussion
### Quantitation of Odor-Active Compounds and OVA Calculation
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Time (min)**} & \multirow{2}{*}{**RI**} & **Odor-Active** & \multirow{2}{*}{**Odor Descriptors**} & **Aroma** & \multirow{2}{*}{**Frequency**} & **Identification** \\  & & & **Compounds** & & & & \\ \hline
1 & 3.84 & 800 & Hexanal & Green, grass & 3.55 \(\pm\) 1.23 & 14 & MS/RI/Odor/STD \\
2 & 5.325 & 851 & 2-Hexanal & Green, fruity & 3.00 \(\pm\) 1.54 & 13 & MS/RI/Odor/STD \\
3 & 8.92 & 960 & Benzaldehyde & Almond-like & 3.00 \(\pm\) 1.71 & 11 & MS/RI/Odor/STD \\
4 & 9.69 & 982 & 1-Octen-3-ol & Mushroom-like & 2.73 \(\pm\) 2.00 & 9 & MS/RI/Odor/STD \\
5 & 10.05 & 992 & 2-Pentyl-furan & Fruity & 3.55 \(\pm\) 0.089 & 12 & MS/RI/Odor/STD \\
6 & 11.02 & 1015 & Hexanoic acid & Unpleasant odor & 2.64 \(\pm\) 1.72 & 8 & MS/RI/Odor/STD \\
7 & 11.56 & 1027 & D-Limonene & Lemon-like & 3.82 \(\pm\) 1.58 & 11 & MS/RI/Odor/STD \\
8 & 12.43 & 1046 & Benzeneacetaldehyde & Sweet, rose-like & 4.00 \(\pm\) 1.76 & 12 & MS/RI/Odor/STD \\
9 & 13.64 & 1072 & Linalool oxide I & Floral, woody & 7.82 \(\pm\) 0.057 & 18 & MS/RI/Odor/STD \\
10 & 14.39 & 1089 & Linalool oxide II & Floral, woody & 8.45 \(\pm\) 0.78 & 18 & MS/RI/Odor/STD \\
11 & 15.13 & 1105 & Linalool & Floral, citrus-like & 8.64 \(\pm\) 0.98 & 18 & MS/RI/Odor/STD \\
12 & 15.75 & 1119 & Phenylethyl alcohol & Sweet, rose-like & 5.64 \(\pm\) 0.77 & 16 & MS/RI/Odor/STD \\
13 & 17.90 & 1168 & L-Borneol & Woody & 2.09 \(\pm\) 1.83 & 7 & MS/RI/Odor/STD \\
14 & 18.47 & 1181 & Epoxylinalol & Floral, woody & 7.91 \(\pm\) 0.79 & 18 & MS/RI/Odor/STD \\
15 & 19.13 & 1196 & \(\alpha\)-Terpineol & Floral, fruity & 4.27 \(\pm\) 2.34 & 10 & MS/RI/Odor/STD \\
16 & 19.29 & 1199 & Methyl salicate & Mint, wintergreen-like & 6.82 \(\pm\) 1.11 & 18 & MS/RI/Odor/STD \\
17 & 19.43 & 1202 & Safranal & Heraceous, sweet & 2.36 \(\pm\) 2.53 & 6 & MS/RI/Odor/STD \\
18 & 20.38 & 1222 & \(\beta\)-Cyclocitral & Mint, fruity & 3.09 \(\pm\) 1.56 & 10 & MS/RI/Odor/STD \\
19 & 20.92 & 1234 & (_Z_)-Geraniol & Rose-like & 3.64 \(\pm\) 1.49 & 12 & MS/RI/Odor/STD \\
20 & 21.05 & 1237 & (3Z)-3-Hexenyl & Fruity & 2.27 \(\pm\) 1.48 & 8 & MS/RI/Odor/STD \\  & & & 2-methylbutanoate & & & \\
21 & 22.19 & 1261 & Geraniol & Rose-like & 7.36 \(\pm\) 1.55 & 18 & MS/RI/Odor/STD \\
22 & 22.35 & 1264 & (_E_)-2-Decencal & Orange-like & 1.09 \(\pm\) 1.93 & 4 & MS/RI/Odor/STD \\
23 & 23.62 & 1291 & 1-Methyl-naphthalene & Earthy-like & 3.36 \(\pm\) 1.92 & 10 & MS/RI/Odor/STD \\
24 & 23.82 & 1295 & Theaspirane & Woody, Fruity & 4.91 \(\pm\) 0.51 & 13 & MS/RI/Odor/STD \\
25 & 27.51 & 1377 & Geranic acid & Sweet, woody & 1.18 \(\pm\) 1.69 & 4 & MS/RI/Odor/STD \\
26 & 27.67 & 1381 & (_E_)-\(\beta\)-Damascenone & Rose-like, sweet & 9.64 \(\pm\) 0.48 & 17 & MS/RI/Odor/STD \\
27 & 27.87 & 1385 & n-Hexyl caproate & Sweet, fruity & 3.36 \(\pm\) 2.01 & 10 & MS/RI/Odor/STD \\
28 & 29.02 & 1412 & Caryophyllene & Floral, woody & 3.09 \(\pm\) 1.97 & 10 & MS/RI/Odor/STD \\
29 & 29.51 & 1425 & \(\alpha\)-Ionone & Woody, violet-like & 6.36 \(\pm\) 0.98 & 15 & MS/RI/Odor/STD \\
30 & 29.94 & 1435 & Dihydro-\(\beta\)-ionone & Woody, violet-like & 7.55 \(\pm\) 0.99 & 16 & MS/RI/Odor/STD \\
31 & 30.63 & 1453 & Geranyl acetone & Rose-like, green & 5.64 \(\pm\) 0.97 & 15 & MS/RI/Odor/STD \\
32 & 31.93 & 1485 & \(\beta\)-Ionone & Woody, violet-like & 9.91 \(\pm\) 0.29 & 18 & MS/RI/Odor/STD \\  & & & Butylated & & & \\
33 & 33.00 & 1513 & hydroxytoluene & Unpleasant odor & 3.27 \(\pm\) 0.75 & 13 & MS/RI/Odor/STD \\
34 & 33.60 & 1528 & Dihydroactinidiolide & Unpleasant odor & 4.36 \(\pm\) 1.49 & 16 & MS/RI/Odor/STD \\
35 & 35.08 & 1566 & (_E_)-Nerolidol & Rose-like & 5.45 \(\pm\) 1.87 & 16 & MS/RI/Odor/STD \\
36 & 27.22 & 1348 & Unknown1 & Floral, sweet & 4.03 \(\pm\) 0.92 & 13 & — \\
37 & 29.25 & 1417 & Unknown2 & Fruity, sweet & 3.29 \(\pm\) 0.44 & 12 & — \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Odor-active compounds detected by GC-O and GC-MS in sun-dried black tea samples (11 samples).