## 3 Results
### Biosynthesis of Volatile Organic Compounds
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Concentration**} & \multicolumn{3}{c}{_K. bametelli_**D1**} & \multicolumn{3}{c}{_H. warrant_**D9**} & \multicolumn{3}{c}{_W. anomalus_**D11**} & \multirow{2}{*}{_p_**-Value**} \\ \cline{2-2} \cline{4-11}
**[sg/L] H-AP** & **1\%** & **5\%** & **10\%** & **1\%** & **5\%** & **10\%** & **1\%** & **5\%** & **10\%** \\ \hline Ethyl acetate & 309,289.05 a & 114,625.79 f & 186,110.41 d & 323,599.38 a & 222,286.38 c & 163,362.05 e & 2230.40 g & 2430.36 g & 3071.41 g & \textless{}0.0001 \\ \hline Isobutyl acetate & 474.88 c & 572.56 b & 945.33 a & 34.25 ef & 63.37 e & 108.01 d & 5.62 f & 7.41 f & 10.98 f & \textless{}0.0001 \\ \hline
3-Methylbutyl acetate & 4618.64 b & 3968.45 c & 5661.64 a & 94.77 e & 202.52 de & 378.28 d & 7.93 e & 9.35 e & 13.10 e & \textless{}0.0001 \\ \hline
2-Methylbutyl acetate & 700.72 b & 640.15 c & 895.65 a & 26.73 de & 34.44 de & 48.74 d & 1.45 e & 1.67 e & 2.25 e & \textless{}0.0001 \\ \hline
2-Phenyl acetate & 423.65 c & 199.39 def & 367.63 d & 297.80 c & 761.56 b & 1595.53 a & 64.97 f & 42.79 f & 48.24 f & \textless{}0.0001 \\ \hline Methyl acetate & 70,312.88 b & 75,479.62 b & 95,368.50 a & 38,637.27 cd & 29,889.40 ef & 26,668.54 f & 252.88 g & 308.75 g & 392.99 g & \textless{}0.0001 \\ \hline Proxyl acetate & 1640.38 a & 293.67 d & 635.04 b & 575.7 b & 392.50 c & 255.81 de & 12.63 g & 17.47 g & 17.16 g & \textless{}0.0001 \\ \hline Butyl acetate & 24.33 a & 3.71 e & 7.78 c & 5.61 d & 3.81 e & 1.51 f & 0.18 f & 0.23 f & 0.20 f & \textless{}0.0001 \\ \hline Ethyl formate & 4.96 f & 3.62 f & 3.39 f & 48.86 ab & 44.17 bc & 38.43 cd & 33.63 d & 35.71 d & 56.29 a & \textless{}0.0001 \\ \hline Ethyl propionate & 1717.82 a & 369.70 g & 648.51 f & 1516.17 b & 1413.36 bc & 1110.23 d & 19.75 h & 18.05 h & 18.53 h & \textless{}0.0001 \\ \hline Isoamyl propionate & 12.19 a & 4.44 c & 7.19 b & 0.53 eg & 1.60 d & 4.00 c & 0.09 fg & 0.07 g & 0.07 g & \textless{}0.0001 \\ \hline Ethyl butyrate & 5.14 d & 3.82 e & 3.88 e & 1.76 g & 2.64 f & 2.64 f & 11.39 a & 9.55 b & 8.56 c & \textless{}0.0001 \\ \hline Ethyl isothirate & 6.05 c & 8.12 b & 5.16 cd & 4.77 d & 8.16 b & 11.90 a & 1.92 e & 2.04 e & 2.68 e & \textless{}0.0001 \\ \hline Ethyl hexanoate & 0.24 fg & 0.14 fg & 0.11 g & 0.95 e & 0.35 f & 0.18 fg & 1.63 a & 1.37 bc & 1.27 cd & \textless{}0.0001 \\ \hline Ethyl octanoate & 0.41 d & 0.35 de & 0.27 de & 0.16 de & 0.13 e & 0.11 e & 1.59 a & 1.25 b & 0.76 c & \textless{}0.0001 \\ \hline Ethyl nonanoate & 0.41 a & 0.46 a & 0.27 a & 0.13 a & 0.11 a & 0.12 a & 0.42 a & 0.50 a & 0.25 a & 0.0305 \\ \hline Ethyl decanoate & 0.33 a & 0.24 b & 0.17 c & 0.11 cd & 0.09 d & 0.10 cd & 0.09 d & 0.12 cd & 0.09 d & \textless{}0.0001 \\ \hline Ethyl dodecanoate & 0.26 a & 0.20 b & 0.17 bc & 0.09 eg & 0.08 fg & 0.09 eg & 0.06 g & 0.06 g & 0.06 g & \textless{}0.0001 \\ \hline \hline \end{tabular} a-h—mean values in columns denoted by different letters differ statistically significantly (one-way ANOVA, \(p<0.0001\)).  
\end{table} 
Table 6: SHS-GC-MS analysis of esters formed during fermentation of hydrolysed apple pomace at 15 \({}^{\circ}\)C. Detailed report, including ion chromatograms after qualitative analysis, is shown in Supplementary Materials (“Supplementary report S4–S6”).