# Evaluation and Comparison of Pear Flower Aroma Characteristics of Seven Cultivars
## 3 Results
### Identification of the Volatile Compounds
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Volatile Compounds**} & \multirow{2}{*}{**RT**} & \multirow{2}{*}{**RI**} & \multirow{2}{*}{**LRI**} & \multicolumn{8}{c}{**\(\boldsymbol{\mu_{\text{g}}\) kg\({}^{-1}\) FW**}} \\ \cline{5-12}  & & & & **Anli** & **Bayuesu** & **Brown peel** & **Golden** & **KorkaXiangli** & **Lyubaoshi** & **Xizilu** & **Identification** \\ \hline \multicolumn{12}{c}{Alcohols} \\ \multicolumn{12}{c}{3-Hexanol} & 1.35 & 853 & 858 & 3.89 & - & - & - & - & - & MS, RI \\ \multicolumn{12}{c}{1-Hexanol} & 1.64 & 861 & 867 & 2.04a & - & - & - & 0.87b & - & - & MS, RI \\ \multicolumn{12}{c}{5-Methyl-hexanol} & 3.97 & 924 & 930 & 7.47 & - & - & - & - & - & MS, RI \\ \multicolumn{12}{c}{1-Hepanol} & 5.11 & 985 & 975 & - & 0.55c & - & 0.12b & - & 1.03a & MS, RI \\ \multicolumn{12}{c}{2-Ethyl hexanol} & 6.86 & 1023 & 1029 & 5.20a & 2.04b & 1.47c & 2.42b & 0.46d & 0.29d & 2.64b & MS, RI \\ \multicolumn{12}{c}{1-Octanol} & 7.83 & 1065 & 1068 & - & 1.79b & 1.58c & 1.35d & 0.29e & 0.27e & 15.63a & MS, RI \\ \multicolumn{12}{c}{2-Phenylethanol} & 9.06 & 1117 & 1114 & 106.92a & 4.19e & 48.53b & 25.65c & 2.65f & 4.28e & 17.07d & MS, RI \\ \multicolumn{12}{c}{(Z)-3-Nonenol} & 9.81 & 1157 & 1153 & - & 0.81 & & & & & & MS, RI \\ \multicolumn{12}{c}{1-Nonanol} & 10.05 & 1178 & 1175 & 6.0 uc & 9.70b & 1.88e & 3.13d & 0.15g & 0.047 & 12.97a & MS, RI \\ \multicolumn{12}{c}{2-Propyl-1-heptanol} & 10.58 & 1195 & 1194 & 6.03 & - & - & - & - & - & MS \\ \multicolumn{12}{c}{2-Buryl-1-octanol} & 11.73 & 1264 & 1277 & - & - & - & - & - & 1.76a & 0.87b & MS, RI \\ \multicolumn{12}{c}{1-Decanol} & 11.86 & 1273 & 1272 & - & 2.87a & - & - & - & - & 3.32a & MS, RI \\ \multicolumn{12}{c}{1-Decanol} & 1.40 & 1452 & 1460 & - & - & 5.53 & - & - & - & - & MS, RI \\ \multicolumn{12}{c}{2-Hexyl decanol} & 15.31 & 1509 & 1504 & 14.40b & - & - & - & - & - & 37.00a & - & MS, RI \\ \multicolumn{12}{c}{1-Tetradecanol} & 17.41 & 1672 & 1676 & - & - & 4.55 & - & - & - & - & MS, RI \\ \multicolumn{12}{c}{SubTOTAL} & 148.15a & 21.96f & 63.54b & 32.55e & 4.5 dg & 44.07d & 53.54c & \\ \multicolumn{12}{c}{Arenes} \\ \multicolumn{12}{c}{\(p\)-Benzquinone} & 3.09 & 909 & 905 & 49.43a & - & 0.96c & 3.04 bc & - & 3.55b & - & MS, RI \\ Benzyl nitrile & 9.46 & 1144 & 1143 & 0.53c & - & 35.65a & - & 0.58c & - & 7.40b & MS, RI \\ Naphthalene & 10.46 & 1189 & 1191 & 1.98c & 1.26d & 1.92c & 5.56a & 1.29d & 0.27e & 2.71b & MS, RI \\ Hydroquinone & 11.82 & 1271 & 1241 & 55.51a & 2.20d & 31.5b & 19.50e & 2.64e & 0.33e & 4.13d & MS, RI \\ \multicolumn{12}{c}{2-Methyl naphthalene} & 12.33 & 1302 & 1315 & 0.44c & 0.21d & - & 0.66b & 0.21d & 1.91a & - & MS, RI \\ \multicolumn{12}{c}{2-Divert-butylquinone} & 14.91 & 1479 & 1472 & & 8.29a & 4.95b & - & 1.51c & - & MS, RI \\ \multicolumn{12}{c}{SubTOTAL} & 107.7a & 3.66f & 77.97b & 33.51c & 4.72l & 7.57e & 14.23d & \\ \multicolumn{12}{c}{Phenols} \\ \multicolumn{12}{c}{Phenol} & 5.50 & 992 & 984 & 1.11a & 0.20c & - & - & 0.07d & 1.03b & 0.23c & MS, RI \\ \multicolumn{12}{c}{2-Nitrogenhenol} & 9.41 & 1138 & 1136 & - & 0.34c & 1.68b & 1.70b & 0.15c & 25.03a & 0.63c & MS, RI \\ \multicolumn{12}{c}{5-Methyl-2-nitrophenol} & 11.52 & 1253 & 1250 & - & - & 1.15b & - & - & 2.12a & - & MS, RI \\ \multicolumn{12}{c}{5-Methyl-2-nitrophenol} & 11.52 & 1253 & 1250 & - & - & 1.11d & 0.54e & 2.83b & 1.7c & 0.22f & 28.18a & 0.23f & \\ \multicolumn{12}{c}{SubTOTAL} & \multicolumn{8}{c}{Aldehydes} \\ \multicolumn{12}{c}{2-Hexanal} & 1.31 & 847 & 853 & 4.21 & - & - & - & - & MS, RI \\ Benzaldehyde & 5.09 & 967 & 961 & 45.68a & 0.29f & 7.13c & 18.57b & 4.27d & 3.22e & 2.78e & MS, RI \\ \multicolumn{12}{c}{1-Octanol} & 6.11 & 1005 & 1004 & - & 9.78b & - & 2.28e & 2.23c & 1.47e & 22.43a & MS, RI \\ \multicolumn{12}{c}{Phenyl acetaldehyde} & 7.22 & 1048 & 1042 & - & 6.83a & 6.36a & 1.23c & 2.74b & - & MS, RI \\ \multicolumn{12}{c}{(E)-2-Octanol} & 7.65 & 1065 & 1065 & - & - & - & - & - & 0.31 & - & MS, RI \\ \multicolumn{12}{c}{1-Nonanal} & 8.72 & 1104 & 1102 & 5.42e & 46.53b & 10.32d & 8.75e & 1.32f & 37.29e & 4 As shown in Figure 2, the total amount of volatiles in pear flowers was significantly different within the seven cultivars.