## 3 Results and Discussion
### Volatile Organic Compounds
\begin{table}
\begin{tabular}{l|c c c c c c c c c c c} \hline \hline
**Compounds** & _Sign_ & \multicolumn{2}{c}{**LSC-9502**} & \multicolumn{2}{c}{**CSC-9502**} & \multicolumn{2}{c}{_Sign._} & \multicolumn{2}{c}{**LSC-G18-9502**} & \multicolumn{2}{c}{**CSC-G18-9502**} & \multicolumn{2}{c}{_Sign Sign._} \\  & & **Mean** & **SD** & **Mean** & **SD** & **Mean** & **SD** & **Mean** & **SD** & **Mean** & **SD** \\ \hline
**ESTERS** & & & & & & & & & & & & & \\ Ethyl Acetate & s & 0.22 b & 0.06 & 0.02 a & 0 & s & 0.05 a & 0.01 & 0.01 a & 0.01 & **ns** \\ Isoamyl Acetate & s & 0.09 a & 0.04 & 0.06 a & 0.01 & **ns** & 0.02 a & 0 & 0.02 a & 0 & **ns** \\ Ethyl Hexanoate & s & 1.36 b & 0.18 & 0.10 a & 0.02 & s & 0.06 a & 0.01 & 0.21 b & 0.02 & s \\ Ethyl Heptaonate & ns & 0.01 a & 0 & 0.01 a & 0 & **ns** & nd a & & **ns** \\ Methyl Octanoate & s & 0.01 a & 0 & 0.01 a & 0 & **ns** & nd a & & **ns** \\ Ethyl Octanoate & ns & 0.58 a & 0.31 & 0.98 a & 0.34 & **ns** & 0.23 a & 0.03 & 0.51 a & 0.20 & **ns** \\ Methyl Decanoate & ns & 0.05 a & 0 & 0.03 a & 0.01 & **ns** & nd a & & **ns** \\ Ethyl Decanoate & ns & 0.02 a & 0 & 0.77 b & 0.31 & s & 0.28 b & 0.05 & 0.07 a & 0.03 & s \\ Diethyl Succinate & s & 0.97 b & 0.18 & nd a & & s & 0.07 b & 0.01 & nd a & & s \\ Ethyl-9-Decenoate & ns & 0.07 a & 0.06 & 0.01 a & 0 & ns & 0.04 a & 0.03 & nd a & & **ns** \\ Phenyl Acetate & s & 0.09 a & 0.06 & 0.07 a & 0.02 & ns & 0.01 a & 0.00 & 0.03 a & 0.02 & **ns** \\ Ethyl Dodecanoate & s & 0.32 b & 0.01 & 0.07 a & 0 & s & nd a & & 0.01 a & 0 & **ns** \\ Hexyl Acetate & s & nd a & & nd a & & ns & nd a & & nd a & **ns** \\ Ethyl Lactate & ns & nd a & & nd a & & ns & 0.06 b & 0 & nd a & & **s** \\
**TOTAL** & \(s\) & _3.78 a_ & _0.43_ & _2.12 a_ & _0.68_ & _ns_ & _0.82 a_ & _0.06_ & _0.87 a_ & _0.28_ & _ns_ \\
**ALCOHOLS** & & & & & & & & & & & \\
2-Methyl-1-Propanol & ns & 0.04 a & 0.02 & 0.01 a & 0 & ns & 0.02 b & 0 & nd a & & s \\
1-Propanol & ns & nd a & & nd a & & ns & 0.01 b & 0 & nd a & **s** \\
2 + 3 Methyl-1-Butanol & s & 0.57 b & 0.07 & nd a & & s & 0.47 b & 0.06 & nd a & **s** \\
1-Hexanol & ns & nd a & & nd a & & ns & 0.02 b & 0 & nd a & **s** \\
2-Ethyl-1-Hexanol & ns & nd a & & & nd a & & ns & nd a & & **ns** \\ Phenyl Ethanol & s & 0.06 a & 0.01 & 0.08 a & 0.02 & **ns** & 0.05 a & 0 & 0.06 b & 0 & s \\
1-Butanol & s & nd a & & nd a & & ns & nd a & & nd a & **ns** \\
3-Methyl-1-Butanol & ns & nd a & & 0.19 b & 0.02 & s & nd a & & 0.05 b & 0.02 b & **s** \\
**TOTAL** & \(s\) & _0.67 b_ & _0.04_ & _0.28 a_ & _0.05_ & \(s\) & _0.58 b_ & _0.08_ & _0.12 a_ & _0.01_ & **s** \\
**TERPENES/NORISOPRENOIDS** & & & & & & & & & & & \\ \(\beta\)-Mircene & s & nd a & & nd a & & ns & nd a & & ns \\ D-Limonene & ns & 0.01 b & 0 & nd a & & s & 0.02 b & 0 & nd a & & s \\
2-Bornanone & s & 0.05 a & 0.02 & nd a & & ns & nd a & & nd a & **ns** \\ Terpinen-4-Ol & s & 0.04 b & 0 & 0.01 a & 0 & s & nd a & & nd a & & ns \\ \(\alpha\)-Terpineol & s & 0.47 b & 0.02 & nd a & & s & nd a & & nd a & & ns \\ Citronellol & s & 0.16 b & 0.03 & nd a & & s & nd a & & nd a & & ns \\ \(\beta\)-Damascenone & s & 0.09 b & 0 & nd a & & s & nd a & & nd a & & ns \\ \(p\)-Cymene & ns & nd a & & nd a & & ns & 0.03 b & 0 & nd a & & s \\ Linalool & ns & nd a & & nd a & & ns & nd a & & 0.13 a & 0.06 & **ns** \\
**TOTAL** & \(s\) & _0.81 b_ & _0.03_ & _0.02 a_ & \(0\) & \(s\) & _0.05 a_ & _0.01_ & _0.15 a_ & _0.06_ & _ns_ \\
**ALDEHYDES/KETONS** & & & & & & & & & & & & \\
2-Octanone & s & 0.03 a & 0.01 & 0.01 a & 0 & ns & 0.01 a & 0 & 0.01 a & 0 & **ns** \\ Nonanal & s & 0.03 b & 0.01 & nd a & & s & nd a & & 0.01 a & 0 & ns \\ Furfural & ns & nd a & & nd a & & ns & 0.01 b & 0 & nd a & & **s** \\ Benzaldehyde & ns & 0.01 a & 0 & 0.01 a & 0 & ns & nd a & & 0.01 a & 0 & ns \\
**TOTAL** & \(s\) & _0.07 b_ & \(0\) & _0.02 a_ & \(0\) & \(s\) & _0.02 a_ & _0.01_ & _0.03 a_ & \(0\) & _ns_ \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Volatile compounds (mg/L) of beers: comparison between laboratory and industrial level. LSC: laboratory-scale; CSC: industrial-scale; 9502: _S.