## Results and Discussion
### Headspace Composition
\begin{table}
\begin{tabular}{c l c c c c} \hline \hline \multicolumn{1}{c}{**No.**} & \multicolumn{1}{c}{**Compounds**} & \multicolumn{1}{c}{**RI**} & \multicolumn{3}{c}{**Area (\%) \(\pm\) SD**} \\ \cline{3-6}  & & **1** & **II** & **III** & **IV** \\ \hline
1 & Pent-1-en-3-ol & \textless{900} & - & - & \(1.34\pm 0.26\) & - \\ \hline
2 & Pentanal & \textless{900} & - & - & - & \(0.52\pm 0.10\) \\ \hline
3 & Pentan-1-ol & \textless{900} & - & - & - & \(0.72\pm 0.05\) \\ \hline
4 & (Z)-Pent-2-en-1-ol & \textless{900} & - & - & - & \(1.20\pm 0.10\) \\ \hline
5 & Hexanal & \textless{900} & - & \(3.40\pm 0.82\) & - & \(6.12\pm 0.29\) \\ \hline
6 & Nonane & 900 & - & - & \(2.73\pm 0.15\) & - \\ \hline
7 & Heptanal & 907 & - & - & - & \(2.35\pm 0.14\) \\ \hline
8 & Benzaldehyde & 970 & \(27.79\pm 1.29\) & \(9.82\pm 0.06\) & \(27.34\pm 1.20\) & \(7.30\pm 0.26\) \\ \hline
9 & Phenol & 984 & \(1.50\pm 0.01\) & \(6.64\pm 0.07\) & \(2.86\pm 0.08\) & \(7.02\pm 0.18\) \\ \hline
10 & Octan-3-one & 991 & \(2.96\pm 0.09\) & - & \(1.96\pm 0.023\) & - \\ \hline
11 & 6-Methylhept-5-en-2-one & 995 & - & - & \(2.13\pm 0.13\) & - \\ \hline
12 & 2-Pentyfuran & 996 & - & \(2.18\pm 0.29\) & - & \(2.52\pm 0.05\) \\ \hline
13 & Octanal & 1007 & - & \(2.54\pm 0.22\) & - & \(4.62\pm 0.15\) \\ \hline
14 & 2-Ethylhexan-1-ol & 1035 & - & \(1.36\pm 0.00\) & - & \(0.83\pm 0.33\) \\ \hline
15 & Benzyl alcohol & 1041 & \(2.07\pm 0.19\) & \(57.92\pm 0.84\) & \(2.59\pm 0.23\) & \(52.48\pm 0.44\) \\ \hline
16 & (E)-Oct-2-enal & 1064 & \(1.73\pm 0.24\) & & \(0.86\pm 0.30\) & \(1.15\pm 0.09\) \\ \hline
17 & Acetophenone & 1073 & \(1.41\pm 0.11\) & \(0.87\pm 0.08\) & \(1.23\pm 0.02\) & - \\ \hline
18 & (E,E)-Octa-3,5-dien-2-one & 1076 & \(2.79\pm 0.17\) & \(1.41\pm 0.19\) & \(2.50\pm 0.16\) & \(1.46\pm 0.05\) \\ \hline
19 & Nonanal & 1108 & - & \(4.43\pm 0.30\) & - & \(2.72\pm 0.47\) \\ \hline
20 & 2,6-Dimethylcyclohexan-1-ol & 1114 & - & - & - & \(1.62\pm 0.16\) \\ \hline
21 & 6-[(1Z)-Butenyl]-1,4- & & & & & \\ cycloheptadiene & 1158 & \(7.78\pm 0.48\) & \(1.81\pm 0.00\) & \(7.12\pm 0.20\) & \(1.41\pm 0.14\) \\  & (Dicytopetrene D\({}^{\prime}\)) & & & & & \\ \hline
22 & (Z)-Non-2-enal & 1169 & \(3.93\pm 0.24\) & - & \(4.45\pm 0.27\) & - \\ \hline
23 & [6-Butyl-1,4-cyclohexadiene] & 1175 & \(8.65\pm 0.78\) & - & \(9.34\pm 1.16\) & - \\  & (Dicytopetrene C\({}^{\prime}\)) & & & & & \\ \hline
24 & Decanal & 1204 & \(2.02\pm 0.20\) & \(1.46\pm 0.00\) & \(2.02\pm 0.18\) & \(1.03\pm 0.09\) \\ \hline
25 & 2-Phenylbut-2-enal & & & & & \\ (2-Phenylcrotonaldehyde) & & & & & & \\ \hline
26 & Heptadecane & 1703 & - & \(3.25\pm 0.20\) & - & \(2.32\pm 0.10\) \\ \hline
27 & (E)-Nonadec-9-ene & 1878 & \(5.89\pm 0.83\) & \(2.90\pm 0.08\) & \(1.54\pm 0.32\) & \(2.60\pm 0.31\) \\ \hline \hline \end{tabular}
\end{table} 
Table 1: The VOCs from \(D\). _vermicularis_ isolated by headspace solid-phase microextraction (HS-SPME) and analysed by gas chromatography–mass spectrometry (GC–MS): (HS-FrDV decreased after the drying. Dictyopetrene C' could not be detected in HS-DrDV and the abundance of dictypotperpene D' decreased 4.3-5.0 times after drying, which can be explained by the oxidative degradation [14; 15; 16; 17]. In HS-DrDV, hexanal had the highest abundance (3.40%; 6.12%) among aliphatic compounds but could not be detected in HS-FrDV. This increment after air-drying was probably a consequence of fatty acids degradation.