## 2 Results and Discussion
### Aroma Compounds of 15 Brands of EVOOs Extracted by SPME and SAFE
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Compounds** & **CAS** & \multicolumn{2}{c}{**LRI**} & \multicolumn{2}{c}{**Odor Property**} & **ID 1** & \multicolumn{2}{c}{**Extraction**} & \multicolumn{2}{c}{**Bands of EVOOs 2**} \\ \cline{2-7}  & & **DB-Wax** & **DB-S** & & & & & \\ \hline _Alcohols_ & & & & & & & & \\ (Z-2)-Pentenol & 1576-95-0 & 1157 & green, plastic & LRI, MS & SPME & 11 \\
1-Pentence-3 ol & 616-25-1 & 1157 & 686 & fruity, nut & LRI, MS, O & SPME/SAFE & 5, 10, 12-156, 8-10, 14, 15 \\ Pentanol & 71-41-0 & 1206 & balsamic & LRI, MS & SPME & 3, 6, 7 \\ Eucalyptus & 470-82-6 & 1206 & mini, sweet & LRI, MS & SPME & 15 \\ Hexanol & 111-27-3 & 1345 & 868 & resin, flower, green & LRI, MS & SPME/SAFE & 1-4, 6, 9, 11-147-15 \\ (_E_)-Hexanol & 928-97-2 & 1376 & mos, fresh & LRI, MS & SAF & 1-15 \\ (_E_)-Hexanol & 928-95-0 & 1397 & 866 & green, leaf, walnut & LRI, MS & SPME/SAFE & 1, 9, 129-5, 15 \\
2-Ethyl hexanol & 104-76-7 & 1481 & 1030 & rose, green & LRI, MS & SPME/SAFE & 4-6, 13, 144-15 \\ Linalool & 78-70-6 & 1538 & 1099 & flower, invender & LRI, MS & SPME/SAFE & 5, 131/6, 9, 10, 13, 15 \\ Octanol & 111-87-5 & 1549 & chemical, metal, burnt & LRI, MS & SPME/SAFE & 2, 3, 8, 9, 10, 12-15 \\ Nonanol & 143-03-8 & 1556 & 1172 & fat, green & LRI, MS & SPME & 2, 4, 7-10, 12-15 \\ Undeacanol & 112-42-5 & 1633 & mandarin & LRI, MS & SAF & 3, 6, 9, 10, 12-15 \\ Benzyl alcohol & 100-51-6 & 1863 & 1038 & sweet, flower & LRI, MS & SPME/SAFE & 4, 7, 8, 12, 13, 135-7, 5-15 \\ Preherylidyl alcohol & 60-12-8 & 1899 & 1115 & honey, spico, live, like & LRI, MS & SPME/SAFE & 1-15/1-15 \\ (_Z_)-Hexanol & 928-94-9 & 866 & leaf, green, wine, fruit & LRI, MS & SPME & 8, 15 \\ (_Z_)-Hexanol & 928-96-1 & 1382 & 855 & grass & LRI, MS, O & SPME/SAFE & 1-157-15 \\
1-Octen-3-ol & 3391-86-4 & 979 & mushroom & LRI, MS & SPME & 2, 5, 6, 12, 15 \\ _Aldehydes_ & & & & & & & \\ \hline \multicolumn{1}{l}{2-Methylhydrazelochey} & 96-17-3 & 905 & cocos, almond & LRI, MS & SPME & 13 \\ Hexanal & 665-25-1 & 1081 & 801 & grass, talso, fat & LRI, MS, O, STD & SPME/SAFE & 1-157-15 \\ (_E_)-2-Pentenal & 1576-87-0 & 1126 & strawberry, fruit, tom & LRI, MS, O & SPME & 3-5, 12, 13, 15 \\ (_E_)-Hexanol & 6728-26-3 & 1214 & 852 & apple, green & LRI, MS, O, STD & SPME/SAFE & 1-157-15 \\ (_Z_)-Hexanol & 505-57-7 & 848 & fat, racid & LRI, MS, O & SPME & 7-2, 14, 15 \\ Octanol & 124-13-0 & 1285 & 1003 & fat, soap, lemon, green & LRI, MS & SAF & 1-157-13, 5-15 \\ (_Z_)-Elephant & 18829-55 & 1319 & 956 & soap, fat, almond & LRI, MS, O, STD & SPME/SAFE & 1-3, 513-73, 5-15, 5-15 \\
2-6-Dimethyl-3-5-heptral & 106-72-9 & 1361 & fruit, green, melon & LRI, MS & SPME & 3 \\ Nonanal & 124-19-6 & 1388 & 1105 & fat, citrus, green & LRI, MS, O & SPME/SAFE & 1-157-15 \\ (_E_)-2-Octenal & 2548-87-0 & 1425 & 1099 & green, nut, fat & LRI, MS, O & SPME/SAFE & 1-157-15, 5-8, 10-12 \\ (_E_)-2-A+Heptational & 4313-03-5 & 1456 & 998 & nut, fat & LRI, MS, O & SPME/SAFE & 1-157-15 \\ 2-Purnaldehyde & 98-01-1 & 1457 & broad, almond, sweet & LRI, MS & SPME & 3 \\ Benzaldehyde & 100-52-7 & 1521 & almond, burnt sugar & LRI, MS & SPME & 1-12/15 \\ Preherylacetaldehyde & 122-78-1 & 1044 & hawrhorn, honey, sweet & LRI, MS & SPME & 1, 4, 6, 10, 14 \\ (_E_)-2-Nononal & 18829-56-6 & 1530 & 1161 & cucumber, fat, green & LRI, MS, O, STD & SPME/SAFE & 1-3, 513-73, 5-15 \\ (_Z_)-2-Decenal & 2497-25-8 & 1263 & tailow & LRI, MS & SPME & 10 \\ (_Z_)+Decenal & 21662-94-9 & 1605 & green, must & LRI, MS & SAF & 6, 11, 14 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: All the flavor compounds identified in 15 EVOOs by SPME and SAFE.