# Comparative Analysis of Volatile Flavor Compounds in Seven Mustard Pastes via HS-SPME-GC-MS
## 2 Results and Discussion
### Identification of Volatiles in MPs
The peak area ratio of allyl thiocyanate to AITC in the seven MPs ranged from 1:4 to 1:5. Elsewhere, it was reported that the level of allyl thiocyanate in mustard oil was also the second-highest, and the peak area ratio of allyl thiocyanate to AITC was between 1:5.5 and 1:6.5 [17]. It is noteworthy that allyl thiocyanate is currently not a permitted food flavor compound; therefore, there is a need to conduct an in-depth study on controlling its content. \begin{table}
\begin{tabular}{l c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Compounds**} & \multicolumn{6}{c}{**Concentation (up/up/up)**} & \multicolumn{6}{c}{**Matching Degree**} \\ \cline{2-11}  & **MP 1** & **MP 2** & **MP 3** & **MP 4** & **MP 5** & **MP 6** & **MP 7** & **Match** & **R.Match** & **R.Match** \\ \hline _Eaters_ (9) & & & & & & & & & & & \\ Alliyocyanate & + & + & + & \(-\) & \(+\) & \(+\) & \(+\) & \(+\) & 909 & 917 & 972/N [FOOTNOTE:]Footnote : \(\sim\)\(\beta\)-Saguiphellardrene[ENDFOOTNOTE] & MS \\ See-Butylinoocyanate & + & + & \(-\) & \(+\) & \(+\) & \(-\) & \(-\) & 868 & 895 & 1289/1287 & MS, RL, S \\ Alliy isothiocyanate & + & + & \(-\) & \(+\) & \(+\) & \(+\) & \(+\) & 960 & 960 & 1363/1361 & MS, RL, S \\ Alliy discourate & + & + & + & + & \(+\) & \(+\) & \(+\) & 878 & 910 & 1467/1440 & MS, RL \\ \(\beta\)-Butylinoocyanate & + & + & \(-\) & \(+\) & \(-\) & \(-\) & 789 & 803 & 1451/1453 & MS, RL \\ Diglycoincomultilyletter acetate & + & + & \(+\) & \(-\) & \(-\) & \(-\) & \(-\) & 886 & 901 & 1684/N & MS \\ \(\beta\)-Methylinopropyl isothiocyanate & \(-\) & + & \(-\) & \(-\) & \(-\) & \(-\) & 901 & 912 & 1938/1979 & MS, S \\ Benzyl isothiarate & + & + & + & + & + & \(+\) & \(-\) & 854 & 883 & 2097/2107 & MS, RL, S \\ Phenylethyl isothiocyanate & + & + & + & + & + & \(+\) & \(+\) & 948 & 948 & 2227/234 & MS, RL, S \\ \(\beta\)_safe/containing compounds (3)_ & & & & & & & & & & & \\ Alliy mercantino & + & + & \(-\) & \(-\) & \(-\) & \(-\) & 942 & 946 & 886/887 & MS, RL, S \\ Daily sulfide & \(-\) & + & \(-\) & \(-\) & \(+\) & \(+\) & \(+\) & 925 & 925 & 1148/1148 & MS, RL, S \\ Daily disulphide & \(-\) & \(-\) & \(-\) & \(-\) & \(+\) & \(-\) & \(-\) & 910 & 932 & 1477/1475 & MS, RL, S \\ _Nutriies_ (2) & & & & & & & & & & & & \\ \(\beta\)-Butennierie & + & + & + & \(-\) & \(+\) & \(+\) & 977 & 977 & 1176/1186 & MS, RL \\ Benzenpropaneonitrile & + & + & + & + & + & + & + & 936 & 936 & 2035/2041 & MS, RL \\ _Kertones_ (3) & & & & & & & & & & & & \\ \(\alpha\)-Turnerone & + & \(-\) & \(-\) & \(-\) & \(-\) & \(-\) & 825 & 838 & 2183/2245 & MS \\ \(\beta\)-Turnerone & + & \(-\) & \(-\) & \(-\) & \(-\) & \(-\) & \(-\) & 850 & 867 & 2250/N & MS \\ \(\alpha\)-Turnerone & + & \(-\) & \(-\) & \(-\) & \(-\) & \(-\) & 845 & 880 & 2262/N & MS \\ _Alkes_ (3) & & & & & & & & & & & & \\ (\(-\)-)\(\beta\)-Saguiphellardrene & + & \(-\) & \(-\) & \(-\) & \(-\) & \(-\) & 905 & 919 & 1765/1765 & MS, RL \\ Circumme & + & \(-\) & \(-\) & \(-\) & \(-\) & \(-\) & \(-\) & 913 & 965 & 1769/1768 & MS, RL \\ Offhers (7) & & & & & & & & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: The volatile compounds detected in seven MP samples.