## 3 Results and Discussion
### The Composition and Changes of VOCs in the Ripening Process of _R. roxburghii_ Fruit
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Compounds**} & \multirow{2}{*}{**RT**} & \multirow{2}{*}{**RI**} & \multirow{2}{*}{**LRI**} & \multicolumn{6}{c}{**Relative Content (mg/kg)**} \\ \cline{5-10}  & & & & & & **I** & **II** & **III** & **IV** & **V** \\ \hline
70 & Ethyl vinyl ketone & 7.392 & 680 & ND & ND & ND & 6.46 & ND & 20.51 \\
71 & 2-Heptanone & 13.599 & 893 & 891.6 & 0.37 & ND & 0.45 & ND & 0.71 \\
72 & Bicyclo [3.1.0]hexan-3-one & 14.209 & ND & 913.9 & ND & ND & ND & ND & 13.48 \\
73 & 5 (4H)-Isoxazolone, 3-methyl- & 16.17 & ND & 991.3 & ND & ND & 0.81 & ND & ND \\
74 & 6-Methyl-5-hepten-2-one & 16.256 & 987 & 994.7 & ND & 2.89 & 6.51 & 2.71 & 7.09 \\
75 & 4-Metchoxy-2,5-dimethyl-3 & & 17.893 & 1065 & 1072.3 & ND & ND & 1.66 & 4.96 & 50.37 \\
76 & 2,6,6-Trimethyl-2-cyclohexene-1,4- & & 19.426 & 1152 & 1153.1 & ND & ND & ND & 0.42 \\
77 & Irisone & 23.025 & ND & 1337.8 & ND & ND & ND & 1.92 & ND \\
78 & \(\alpha\)-lonone & 25.633 & 1429 & 1441.9 & ND & ND & ND & 0.50 & 9.27 \\
79 & Geranylacetone & 25.862 & 1453 & 1456.9 & 1.20 & 1.30 & 3.24 & ND & 4.14 \\
80 & 6,10-Dimethyl-5,9-undecadien-2-one & 26.014 & 1456 & 1462.8 & ND & ND & ND & 1.83 & ND \\
81 & \(\beta\)-Lonone & 27.214 & 1488 & 1503.3 & 0.60 & ND & ND & 1.28 & 7.67 \\
82 & 2H-1-Benzopyran-2-one, 3,4-dihydro- & & 29.013 & ND & 1575.7 & ND & ND & ND & 1.64 & 1.07 \\
83 & Nootkartone & 33.516 & 1800 & 1814.5 & ND & ND & ND & 0.88 & ND \\  & Ketones (14) & & & & 2.17 & 4.19 & 19.13 & 15.73 & 114.73 \\ \hline
84 & 1,3,5,7-Cyclococatetraene & 13.695 & ND & 894.7 & ND & ND & ND & 0.49 \\
85 & Styrene & 13.885 & 894 & 900.0 & 0.05 & ND & 0.52 & 0.96 & ND \\
86 & 2,4-Hexadiene & 14.428 & ND & 922.5 & ND & ND & ND & ND & 0.56 \\
87 & 1- (2-Methyl-1-cyclopentenyl)ethanoneone & 16.855 & ND & 1022.5 & ND & ND & ND & ND & 1.40 \\
88 & 3-Bromomethyl-1-cyclohexene & 17.008 & ND & 1029.9 & ND & ND & 0.57 & ND & ND \\
89 & (E)-\(\beta\)-Ccineme & 17.389 & 1051 & 1048.4 & ND & ND & 21.88 & 2.03 & 2.51 \\
90 & Fema 3539 & 17.484 & 1050 & 1053.0 & ND & ND & ND & 99.74 \\
91 & (Z)-\(\beta\)-Ccineme & 17.627 & 1040 & 1059.9 & ND & 2.90 & 11.09 & 53.77 & ND \\
92 & 4-Isopropenyltoluene & 18.417 & 1090 & 1098.1 & ND & ND & ND & 0.60 \\
93 & (E,E)-allocolemene & 19.055 & ND & 1132.8 & ND & ND & ND & ND & 4.26 \\
94 & (3E,5E)-2,6-Dimethyl-1-3,5,7- & & 19.131 & 1134 & 1136.9 & ND & ND & ND & 4.72 \\  & octatene & & 19.207 & 1127.9 & 1141.1 & 0.16 & ND & ND & ND & ND \\
95 & 1,5,5,6-Tetramethylcyclohex-1,3- & & 19.207 & ND & 1141.1 & ND & ND & 0.24 & ND & ND \\
96 & 1,5,5,6-Tetramethylcyclohex-1,3- & & 19.207 & 1131 & 1141.1 & ND & ND & ND & 2.50 & ND \\
97 & (E,Z)-Alloocimene & 19.207 & 1131 & 1141.1 & ND & ND & ND & 2.50 & ND \\
98 & p-Mentha-1,3,8-triene & 19.283 & ND & 1145.2 & ND & ND & ND & 1.42 & ND \\
99 & 2-Bornene & 21.33 & ND & 1254.6 & ND & 0.07 & ND & ND & ND \\
100 & 3-Isopropylidene-6-methyl-1- & cyclohexene & 21.34 & 1088 & 1255.2 & 0.05 & ND & ND & ND & ND \\
101 & 2,6,10,10-Tetramethyl-1- & & 22.672 & 1298 & 1336.5 & ND & ND & ND & 0.63 & 1.64 \\
102 & (-)-\(\alpha\)-Cubehene & 23.663 & 1351 & 1366.9 & ND & ND & ND & 2.91 & 9.60 \\
103 & \(\alpha\)-Terpinene & 23.939 & 1020 & 1379.5 & ND & ND & ND & ND & 1.06 \\
104 & 3,8-p-Menthaadiene & 24.005 & 1071 & 1382.5 & ND & ND & ND & 0.25 & ND \\
105 & Terpinolene & 24.101 & 1090 & 1386.9 & ND & ND & 0.29 & ND & ND \\
106 & Cyclohexene, 1-methyl-3- & & 24.101 & ND & 1386.9 & ND & ND & ND & 2.15 & ND \\
107 & \(\beta\)-Elemene & 24.662 & 1392 & 1410.6 & ND & ND & 2.14 & ND & 19.12 \\
108 & \(\beta\)-Caryophyllene & 25.586 & 1419 & 1446.3 & ND & 1.18 & 5.23 & 17.41 & 34.36 \\
109 & (E)-\(\alpha\)-Bergamotene & 25.69 & 1450 & 1450.3 & ND & ND & ND & 0.24 & 1.96 \\
110 & (E)-\(\beta\)-Farnesene & 25.957 & 1459 & 1460.6 & ND & ND & ND & 1.46 & 5.45 \\
111 & (E)-Germanence D & 26.328 & 1481 & 1474.9 & ND & ND & ND & ND & 0.81 \\
112 & \(\alpha\)-Caryophyllene & 26.49 & 1454 & 1481.2 & 0.30 & 0.86 & 3.59 & ND & 22.24 \\ Naphthalene, 1,2,3,4,4a,5,6,7- & & 113 & 10434.8 & 1511.7 & ND & ND & 6.77 & 27.01 & 96.67 \\
113 & \(\beta\)-Selinene & 27.404 & 1475 & 1517.0 & ND & ND & ND & & 44.37 \\ \hline \hline \end{tabular}
\end{table}