# Influence of Electrohydrodynamics on the Drying Characteristics and Volatile Components of Ginger
## 3 Results and Discussion
### Volatile Components
Table 1 shows the analysis of volatile components in ginger based on retention indices. There were 63 common substances, including 15 alcohols, 13 terpenoids, 5 ketones, 8 aldehydes, 7 lipids, 12 hydrocarbons, and 3 other substances. Table 1 includes their chemical names, CAS, molecular formulae, and retention indices. Figure 8: Fingerprints of ginger at different drying voltages. (**a**): Fingerprints with retention time 1.2–2.2; (**b**): Fingerprints with retention time 30.5–32.0. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**NO.** & **Compounds** & **CAS** & **Structural Formula** & **Ret. Index** \\ \hline
1 & Tricyclo[2.2.1.0(2,6)]heptane, 1,7,7-trimethyl- & 508-32-7 & 729 \\ \hline
2 & 2-Heptanone & 110-43-0 & 853 \\ \hline
3 & 2-Heptanol & 543-49-7 & 879 \\ \hline
4 & Bicylo[3.1.0]hexane, 4-methylene-1-(1-methylylethyl)- & 3387-41-5 & 897 \\ \hline
5 & 5-Hepten-2-one, 6-methyl- & 110-93-0 & 938 \\ \hline
6 &.beta.-Pinene & 127-91-3 & 943 \\ \hline \hline
7 &.alpha.-Pinene & 80-56-8 & 948 \\ \hline \end{tabular}
\end{table} 
Table 1: Total volatile components and relative content. \begin{table}
\begin{tabular}{c c c c} \hline
**NO.** & **Compounds** & **CAS** & **Structural Formula** & **Ret. Index** \\ \hline
8 &.beta-Myrocene & 123-35-3 & 958 \\ \hline
9 & trans-beta-Ocimene & 3779-61-1 & 976 \\ \hline
10 & Octanal & 124-13-0 & 1005 \\ \hline
11 & 1,3-Cyclopentadiene, 1,3-bis(1-methylethyl)- & 123278-27-3 & 1012 \\ \hline
12 & 2-Nonanone & 821-55-6 & 1052 \\ \hline
13 & Eucalypt & 470-82-6 & 1059 \\ \hline \end{tabular}
\end{table} 
Table 1: Cont. \begin{table}
\begin{tabular}{c c c c} \hline
**NO.** & **Compounds** & **CAS** & **Structural Formula** & **Ret. Index** \\ \hline
15 & Camphene & 79-92-5 & 1088 \\ \hline
16 & Nonanal & 124-19-6 & 1104 \\ \hline
17 & Bicyclo[2.2.1]hepttan-2-one, 1,7,7-trimethyl- & 464-48-2 & 1121 \\ \hline
18 & Citronellal & 106-23-0 & 1125 \\ \hline
19 & Terpinen-4-ol & 562-74-3 & 1137 \\ \hline
20 & Frenchol & 1632-73-1 & 1138 \\ \hline  & & & OH \\
21 & 3-Cyclohexene-1-methanol, & 98-55-5 & 1143 \\ \hline \end{tabular}
\end{table} 
Table 1: _Cont._ \begin{table}
\begin{tabular}{c c c c c} \hline
**NO.** & **Compounds** & **CAS** & **Structural Formula** & **Ret. Index** \\ \hline
22 & Cyclohexanol, 1-methyl-4-(1-methylethenyl)- & 7299-40-3 & 1158 \\ \hline
23 & Neral & 106-26-3 & 1174 \\ \hline
24 & Citronellol & 106-22-9 & 1179 \\ \hline
25 & Acetic acid, octyl ester & 112-14-1 & 1183 \\ \hline
26 & Benzenemethanol, alpha,\_alpha,4-trimethyl- & 1197-01-9 & 1197 \\ \hline
27 & Decanal & 112-31-2 & 1204 \\ \hline
28 & 2-Decanal, (Z)- & 2497-25-8 & 1212 \\ \hline \end{tabular}
\end{table} 
Table 1: Cont. \begin{table}
\begin{tabular}{c c c c} \hline
**NO.** & **Compounds** & **CAS** & **Structural Formula** & **Ret. Index** \\ \hline
29 &
\begin{tabular}{c} Oxinarcarboxaldehyde, \\ 3-methyl-3-(4-methyl-3-pentenyl)- \\ \end{tabular} & 16996-12-6 & 1215 \\ \hline
30 & 2-Nonanol, acetate & 14936-66-4 & 1218 \\ \hline
31 &
\begin{tabular}{c} Geraniol \\ 32 \\ \end{tabular} & 106-24-1 & 1228 \\ \hline
33 &
\begin{tabular}{c} Isoaromadendrene epoxide & 0-00-0 & 1281 \\ \hline
34 & 6-Octen-1-ol, 3,7-dimethyl-, acetate & 150-84-5 & 1302 \\ \hline \end{tabular}
\end{table} 
Table 1: _Cont._ \begin{table}
\begin{tabular}{c c c c} \hline
**NO.** & **Compounds** & **CAS** & **Structural Formula** & **Ret. Index** \\ \hline
36 & 2,6-Octadien-1-ol, 3,7-dimethyl-, acetate & 141-12-8 & 1352 \\ \hline
37 & Cyclohexene, 4-ethenyl-4-methyl-3-(1-methylehenyl)-1-(1-methylehenyl)-, (3R-trans)- & 20307-84-0 & 1377 \\ \hline
38 & Aromandendrene & 489-39-4 & 1386 \\ \hline
39 & (E)-2-Decenyl acetate & 2497-23-6 & 1389 \\ \hline \end{tabular}
\end{table} 
Table 1: _Cont._