## 3 Results and Discussion
### Aromatic Profile
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Aroma Compound** & **Odor Description** & **References** \\ \hline Alcohols & & \\
**Ethanol \({}^{*}\)** & Apple, sweet, strong, alcoholic & [57] \\
**Heptan-4-ol** & Floral & [58] \\
**Hexan-1-ol \({}^{*}\)** & Ethereal, fruity, sweet, green & [59] \\
**(Z)-hex-3-en-1-ol \({}^{*}\)** & Fresh green cut grass, vegetable & [59] \\
**(E)-hex-2-en-1-ol** & Green, leafy, fruity & [59] \\
2-Ethylhexan-1-ol & Fruity, oily, sweet, reminiscent of roses & [60] \\ \hline Aldehydes and Ketones & & \\ \hline Hexanal \({}^{*}\) & Green, grassy & [59] \\ (E)-pent-2-enal & Sweet, herbaceous & [61] \\ (E)-hex-3-en-nal & Green, fruity, apple-like & [60] \\ Heptanal & Very strong, fatty, harsh, pungent odor and an unpleasant, fatty taste & [60] \\ (E)-2-Hexen-1-al & Sweet, fragrant, almond, fruity green, leafy, apple, plum, vegetable odor & [60] \\ (Z)-hept-4-enal & Oily, fishy & [61] \\ Benzaldehyde \({}^{*}\) & Almonds, cherry, sweetness, burnt sugar & [57] \\
2-phenylacetaldehyde & Honey-like & [62] \\ Nonanal & Citrus, green, citronella, grass & [61] \\ Pentan-3-one \({}^{*}\) & Sweet, green & [63] \\
2-methylpent-1-en-3-one & Citrus-like, orange, dried flower, rose & [64] \\ Pentane-2,3-dione & Sweet odor similar to quinone & [60] \\ Acetoin & Sweet, butter, cream & [65] \\ Pent-1-en-3-one & Green, pungent, mustard & [63] \\ Heptan-3-one & Fruity, green, fatty, sweet, ethereal, powerful odor and a melon, banana flavor & [60] \\ \hline Esters & & \\
**Ethyl Acetate \({}^{*}\)** & Pineapple, fruity, ethereal & [57] \\ Ethyl 2-furanpropionate & Fruity odor reminiscent of chamomile & [60] \\
**Ethyl 2-methylpropanoate \({}^{*}\)** & Sweet & [57] \\ Methyl lbutanoate & Ether, fruity, sweet & [65] \\
**Ethyl butyrate \({}^{*}\)** & Apple, strawberry, fruity, pineapple & [57] \\ Ethyl (E)-but-2-enoate & Fruity, rum, caramellic & [66] \\ Ethyl 2-methylbutanoate \({}^{*}\) & Powerful, green, fruity, apple-like odor & [60] \\ Ethyl 3-methylbutanoate & Strong, fruity, viinous, apple-like odor on dilution & [60] \\ Butyl acetate & Strong, fruity odor, burning, and then sweet taste reminiscent of pineapple & [60] \\
**Methylly carbonate \({}^{*}\)** & Plastic & [67] \\
**3-methylbutyl acetate \({}^{*}\)** & Fruity, banana, sweet, fragrant, powerful, reminiscent of pear & [60] \\ Ethyl (Z)-but -2-enoate & Powerful, sour, caramellic, fruity & [60] \\ Methyl hexanoate & Fruity, fatty & [66] \\ Ethyl hexanoate & Apple peel, fruit, green apple & [57] \\ Hexyl acetate & Pleasant fruity, apple, cherry, bittersweet taste suggestive of pear & [60] \\
**(Z)-hex-5-well acetate** & Powerful, green, fruity, floral note reminiscent of banana & [60] \\ (E)-hex-2-enyl acetate & Green, fruity & [57] \\
**(E)-Ethyl 2-hexenoate \({}^{*}\)** & Fruity, green, pulpy pineapple and apple odor & [60] \\
**Ethyl benzoate \({}^{*}\)** & Somewhat fruity, similar to ylang-ylang & [60] \\
3-Methylbut-2-enyl acetate & Fruity, green apple, banana, melon & [60] \\ Ethyl octanoate & Fruity, fat & [57] \\ Ethyl (methylthio) acetate & Fruity & [60] \\ Ethyl pentanoate & Fruity, sweet & [61] \\ Methyl benzoate & Violet, floral & [68] \\ Propyl acetate & Pleasant, bittersweet flavor reminiscent of pear on dilution & [60] \\ Isobutyl acetate & Fruity, apple & [63] \\ Butyl prop-2-enoate & Mushroom-like, geranium-like & [69] \\ \hline Furan & & \\
2-EthylFuran & Sweet, chemical with clean, fresh, fruity lift & [60] \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Aromatic compounds found in the samples. The 14 compounds marked with an asterisk (\({}^{*}\)) were common to all samples, and those marked in bold were quantified. In the 30% of compounds found exclusively in certain areas, 3-Methylbut-2-enyl acetate, 1-Methyl-3-propan-2-ylbenzene and Nonanal were found in the Malanje area.