## 2 Results and Discussion
### Volatile Composition of Red Mombin Pulp
\begin{table}
\begin{tabular}{l l c c c c c c} \hline \hline \multirow{2}{*}{**Peak**} & \multirow{2}{*}{**Compound**} & \multirow{2}{*}{**RI**} & \multirow{2}{*}{**Integral**} & \multicolumn{4}{c}{**Powder**} \\ \cline{4-9}  & & & **dary 0** & & **After SD** & & **After SD** \\ \cline{4-9}  & & & & **(day 0)** & **(day 0)** & **(day 0)** & **(day 0)** & **(day 0)** \\ \hline
23 & \(\beta\)-pinene \({}^{\mathrm{b}}\) & 945 & nd & 5.8 \(\pm\) 0.5 & 11.5 \(\pm\) 4.21 & 13.5 \(\pm\) 5.3 & 9.3 \(\pm\) 0.1 & 9.1 \(\pm\) 0.3 \\
24 & \(\beta\)-mycrene \({}^{\mathrm{b}}\) & 991 & 1.9 \(\pm\) 0.2 & nd & nd & nd & nd \\
25 & Limonene \({}^{\mathrm{a,b}}\) & 1030 & 14.0 \(\pm\) 0.2 & 27.3 \(\pm\) 5.4 & 31.0 \(\pm\) 3.0 & 27.0 \(\pm\) 5.1 & 23.5 \(\pm\) 1.7 & 24.1 \(\pm\) 3.3 \\
26 & Copaene \({}^{\mathrm{b}}\) & 1373 & 15.0 \(\pm\) 1.6 & nd & nd & nd & nd \\
27 & \(\beta\)-caryophyllene \({}^{\mathrm{a}}\) & 1415 & 45.2 \(\pm\) 7.3 & 1.7 \(\pm\) 0.3 & 1.6 \(\pm\) 0.4 & 1.4 \(\pm\) 0.4 & 0.9 \(\pm\) 0.1 & 0.9 \(\pm\) 0.1 \\
28 & non identified terpene & 1446 & 2.8 \(\pm\) 0.5 & 0.5 \(\pm\) 0.0 & 0.5 \(\pm\) 0.1 & 0.4 \(\pm\) 0.1 & 0.2 \(\pm\) 0.0 & 0.4 \(\pm\) 0.2 \\
29 & \(\alpha\)-caryophyllene \({}^{\mathrm{a}}\) & 1452 & 14.6 \(\pm\) 1.5 & 0.7 \(\pm\) 0.1 & 0.5 \(\pm\) 0.1 & 0.5 \(\pm\) 0.1 & 0.4 \(\pm\) 0.0 & 0.4 \(\pm\) 0.0 \\
30 & NI terpene & 1470 & 1.6 \(\pm\) 0.2 & 1.2 \(\pm\) 0.4 & 0.7 \(\pm\) 0.0 & 0.7 \(\pm\) 0.2 & 0.6 \(\pm\) 0.0 & 0.6 \(\pm\) 0.1 \\
31 & NI terpene & 1472 & 4.3 \(\pm\) 0.1 & 0.2 \(\pm\) 0.1 & 0.2 \(\pm\) 0.1 & 0.2 \(\pm\) 0.0 & 0.2 \(\pm\) 0.0 & 0.2 \(\pm\) 0.0 \\
32 & \(\alpha\)-muroulene * & 1494 & 4.8 \(\pm\) 0.5 & tr & tr & 0.4 \(\pm\) 0.1 & 0.3 \(\pm\) 0.0 & 0.3 \(\pm\) 0.0 \\
33 & pentadecane * & 1500 & 2.5 \(\pm\) 0.1 & 2.5 \(\pm\) 3.7 & 0.3 \(\pm\) 0.1 & 0.4 \(\pm\) 0.1 & 0.3 \(\pm\) 0.0 & 0.3 \(\pm\) 0.0 \\
34 & NI terpene & 1514 & 8.2 \(\pm\) 0.4 & 1.5 \(\pm\) 2.2 & 0.3 \(\pm\) 0.1 & 0.4 \(\pm\) 0.1 & 0.3 \(\pm\) 0.0 & 0.3 \(\pm\) 0.0 \\
35 & NI & 1615 & 81.9 \(\pm\) 3.0 & 3.3 \(\pm\) 2.1 & 4.5 \(\pm\) 0.9 & 5.1 \(\pm\) 1.4 & 4.8 \(\pm\) 0.1 & 5.3 \(\pm\) 0.9 \\
36 & \(\alpha\)-bisaboloid * & 1683 & 19.2 \(\pm\) 2.1 & 0.9 \(\pm\) 0.2 & 0.7 \(\pm\) 0.0 & 0.6 \(\pm\) 0.2 & 0.9 \(\pm\) 0.1 & 1.3 \(\pm\) 0.7 \\ \hline \hline \end{tabular}  
* RI: retention index in a DB-5 column; nd: not detected; tr: traces (\(>\)0.01 \(\times\) 10\({}^{6}\) counts); NI: non identified;
*: first time identified in red mombin; \({}^{\mathrm{a}}\): also identified by [PERSON] _et al._[14]; \({}^{\mathrm{b}}\): also identified by [PERSON] _et al._[15].  
\end{table} 
Table 1: _Cont._quite similar among extractions, with a coefficient of variation of 4.92%. The same compounds were identified in the extractions, with the exception of butyl ethanoate, which was detected only in one injection, as the compound present in the lowest amount (representing only 0.08% of the chromatogram relative area). Regarding peak area, alcohols were the major class of fresh red mombin pulp volatiles, followed by aldehydes, esters and terpenic compounds (Figure 1a). Although these results are different from another study [14] that found esters and aldehydes as the main chemical classes in the red mombin fruit, most compounds are almost the same. In our work, we found hexanal, 3-hexen-1-ol, 2-hexen-1-ol and ethyl acetate as the major compounds, while [PERSON] _et al._[14] found hexanal, 3-hexen-1-ol, trans-2-hexen-1-ol, hexyl acetate and ethyl acetate. Terpenes were more abundant in number of compounds, differing from other tropical fruits, including species of _Spondias_ genre like umbu-caja (_S. citherea_), tapereba (_S. mombin_) and caja (_S. mombin_) [20,21]. _Spondias purpurea_, therefore, it appears to be unique in terms of volatile composition.