## 3 Results and Discussion
### Volatile Compounds
\begin{table}
\begin{tabular}{r c c c c c} \hline \hline
**LRI 1** & **Volatile Compound** & **AU 2** & **A \(\times\) C** & **A \(\times\) DOP** & **V \(\times\) C** & **V \(\times\) DOP 3** \\ \hline
1356 & 2-Hydroxy ethyl propanoate & \(1.21\pm 0.84\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1382 & 2-Hydroxy ethyl butanoate & \(0.66\pm 0.61\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1421 & Butyl hexanoate & \(0.46\pm 0.22\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1443 & Ethyl octanoate & \(3.95\pm 1.80\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1466 & Isopentyl hexanoate & \(1.87\pm 2.19\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1605 & Butyl octanoate & \(0.47\pm 0.32\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1648 & Ethyl decanoate & \(2.50\pm 1.00\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1715 & Propyl decanoate & \(0.73\pm 0.43\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1853 & Ethyl palmitate & \(1.02\pm 0.60\) & & & & \(\times\) \\
2233 & Methyl hexadecanoate & \(0.96\pm 1.21\) & & & & \(\times\) \\
2430 & Methyl octadecenoate & \(2.30\pm 3.99\) & & & & \(\times\) \\
2440 & Ethyl heptadecanoate & \(5.65\pm 9.79\) & & & & \(\times\) \\
2474 & Methyl(Z)-9 octadecenoate & \(19.00\pm 16.72\) & & & & \(\times\) \\
**Aliphatic hydrocarbons** & & & & & & \\  & & & & & & \\  & & & & & & \\
1101 & Undeane & \(3.05\pm 1.32\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1499 & Pentadecane & \(1.03\pm 0.42\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1600 & Hexadecane & \(0.94\pm 0.42\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1800 & Octadecane & \(2.26\pm 2.32\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1900 & Nonadecane & \(3.88\pm 4.03\) & & & \(\times\) & \(\times\) \\
2000 & Eicosane & \(1.76\pm 1.91\) & & & \(\times\) & \(\times\) \\
2100 & Heneicosane & \(1.07\pm 0.82\) & & & & \(\times\) \\
**Aromatic hydrocarbons** & & & & & & \\  & 1269 & Styrene & \(0.56\pm 0.33\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1544 & Benzaldehyde & \(1.13\pm 0.58\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1666 & Phenylacetaldehyde & \(1.71\pm 1.26\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1933 & 2-Phenylylethanol & \(1.53\pm 0.77\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
2035 & Phenol & \(0.64\pm 0.28\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
2108 & 2-Methylphenol (p-cresol) & \(0.79\pm 0.46\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
**Lactones** & & & & \(4.07\pm 3.00\) & & & \\
1725 & 8-Hexalactone & \(1.67\pm 0.85\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1941 & 8-Octadecone & \(0.98\pm 0.58\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1991 & 8-Decalactone & \(1.14\pm 1.68\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
2369 & 8-Dodecalactone & \(1.72\pm 1.96\) & & & & \(\times\) \\
**Aldehydes** & & & & \(3.27\pm 4.19\) & & & \\
2040 & Pentadecanal & \(1.19\pm 0.62\) & & & & \(\times\) \\
2140 & Hexadecanal & \(2.67\pm 3.55\) & & & & \(\times\) \\
**Furans** & & & \(2.57\pm 1.10\) & & & \\
1636 & 5-Methyl-2-furfurral & \(0.75\pm 0.25\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
1679 & 2-Furanmethanol & \(0.97\pm 0.50\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
2055 & Dihydro-5-phenyl-2(3H)-furanone & \(0.95\pm 0.64\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) \\
**Sulphur compounds** & & & \(1.38\pm 0.50\) & & & \\  & 1932 & Dimethylsulphone & \(1.38\pm 0.50\) & \(\times\) & \(\times\) & \(\times\) \\ \hline \hline \end{tabular}  
* Linear retention index; 2 Area units (\(\times 10^{7}\)); 3 A: Animal renet; C: Control diet; DOP: Dry orange pulp diet including both DOP40 and DOP80; V: Vegetable renet. Compounds marked with ”\(\times\)” were found in samples of each renet \(\times\) diet combination.  
\end{table}