# How Different Fermentation Type Affects Volatile Composition of Plum Jerkums
## 3 Results and Discussion
### Chemical Composition of Fresh Plum Musts and Jerkums
Generally, the highest fermentation rate was noted in Wegierka Dabrowicka and Cacanska Lepotica (except spontaneous fermentation) (Figures 1-4), however, in the case of the first cultivar, weight loss occurred successively throughout the whole fermentation process. It could be associated  
\begin{table}
\begin{tabular}{c c c c c c c} \hline
**Plum** & **Type of** **Fementation** & **Total Extract** & **Tittrable** & **Ethanol** & **Free Amino Nitrogen** & **Fermentation Efficiency** \\ \hline \multicolumn{7}{c}{[g/L]} \\  & & [g/L] & & [\% vol.] & [mg/L] & [\%] \\ \hline \multirow{7}{*}{Wegierka} & _S. cerevisiae_ S1 & 42.0 \({}^{\text{ab}}\) & 3.72 \({}^{\text{e}}\) & 6.9 \({}^{\text{b}}\) & 46.29 \({}^{\text{d}}\) & 93.8 \({}^{\text{ab}}\) \\  & (\(\pm\)2.2) & (\(\pm\)0.12) & (\(\pm\)0.2) & (\(\pm\)1.98) & (\(\pm\)1.2) \\ \cline{2-7}  & _H. warrant_ H2 & 44.7 \({}^{\text{ab}}\) & 3.63 \({}^{\text{e}}\) & 6.8 \({}^{\text{b}}\) & 51.67 \({}^{\text{cd}}\) & 92.3 \({}^{\text{ab}}\) \\  & (\(\pm\)1.2) & (\(\pm\)0.21) & (\(\pm\)0.1) & (\(\pm\)2.18) & (\(\pm\)2.1) \\ \cline{2-7}  & \begin{tabular}{c} Spontaneous \\ fermentation \\ \end{tabular}  & 39.0 \({}^{\text{ab}}\) & 3.73 \({}^{\text{e}}\) & 5.7 \({}^{\text{c}}\) & 52.46 \({}^{\text{c}}\) & 78.4 \({}^{\text{bc}}\) \\  & (\(\pm\)0.8) & (\(\pm\)0.23) & (\(\pm\)0.1) & (\(\pm\)1.02) & (\(\pm\)0.9) \\ \cline{2-7}  & \begin{tabular}{c} Ethanol RED \\ (\(\(S. cerevisiae\)) \\ \end{tabular}  & 45.3 \({}^{\text{ab}}\) & 4.43 \({}^{\text{d}}\) & 7.2 \({}^{\text{ab}}\) & 47.46 \({}^{\text{d}}\) & 97.8 \({}^{\text{a}}\) \\  & (\(\pm\)0.5) & (\(\pm\)0.07) & (\(\pm\)0.2) & (\(\pm\)1.06) & (\(\pm\)1.4) \\ \hline \multirow{7}{*}{Wegierka} & _S. cerevisiae_ S1 & 36.3 \({}^{\text{b}}\) & 9.14 \({}^{\text{a}}\) & 7.9 \({}^{\text{a}}\) & 57.61 \({}^{\text{c}}\) & 98.8 \({}^{\text{a}}\) \\  & (\(\pm\)2.1) & (\(\pm\)0.03) & (\(\pm\)0.1) & (\(\pm\)2.61) & (\(\pm\)1.3) \\ \cline{2-7}  & \begin{tabular}{c} _H. warrant_ H2 \\ \end{tabular}  & 33.0 \({}^{\text{bc}}\) & 6.53 \({}^{\text{b}}\) & 7.8 \({}^{\text{a}}\) & 45.32 \({}^{\text{d}}\) & 98.6 \({}^{\text{a}}\) \\  & (\(\pm\)3.7) & (\(\pm\)1.73) & (\(\pm\)0.2) & (\(\pm\)1.51) & (\(\pm\)0.8) \\ \cline{2-7}  & \begin{tabular}{c} Spontaneous \\ fermentation \\ \end{tabular}  & 48.7 \({}^{\text{a}}\) & 8.55 \({}^{\text{a}}\) & 5.4 \({}^{\text{c}}\) & 44.91 \({}^{\text{d}}\) & 67.6 \({}^{\text{c}}\) \\  & (\(\pm\)5.8) & (\(\pm\)0.72) & (\(\pm\)0.3) & (\(\pm\)6.02) & (\(\pm\)2.1) \\ \cline{2-7}  & \begin{tabular}{c} Ethanol RED \\ (\(S. cerevisiae\)) \\ \end{tabular}  & 46.0 \({}^{\text{a}}\) & 8.33 \({}^{\text{a}}\) & 8.0 \({}^{\text{a}}\) & 54.41 \({}^{\text{c}}\) & 99.3 \({}^{\text{a}}\) \\  & (\(\pm\)0.8) & (\(\pm\)0.40) & (\(\pm\)0.3) & (\(\pm\)3.31) & (\(\pm\)0.3) \\ \hline \multirow{7}{*}{Stanley} & _S. cerevisiae_ S1 & 44.7 \({}^{\text{ab}}\) & 5.81 \({}^{\text{c}}\) & 7.6 \({}^{\text{a}}\) & 66.33 \({}^{\text{b}}\) & 96.4 \({}^{\text{a}}\) \\  & (\(\pm\)0.5) & (\(\pm\)0.13) & (\(\pm\)0.3) & (\(\pm\)0.3) & (\(\pm\)3.03) & (\(\pm\)0.8) \\ \cline{2-7}  & \begin{tabular}{c} _H. warrant_ H2 \\ \end{tabular}  & 43.0 \({}^{\text{ab}}\) & 6.10 \({}^{\text{b}}\) & 7.4 \({}^{\text{a}}\) & 59.11 \({}^{\text{c}}\) & 93.6 \({}^{\text{ab}}\) \\  & (\(\pm\)0.8) & (\(\pm\)0.38) & (\(\pm\)0.1) & (\(\pm\)0.61) & (\(\pm\)1.0) \\ \cline{2-7}  & \begin{tabular}{c} Spontaneous \\ fermentation \\ \end{tabular}  & 42.7 \({}^{\text{ab}}\) & 5.38 \({}^{\text{c}}\) & 6.7 \({}^{\text{b}}\) & 57.72 \({}^{\text{c}}\) & 84.8 \({}^{\text{b}}\) \\  & (\(\pm\)1.2) & (\(\pm\)0.32) & (\(\pm\)1.1) & (\(\pm\)0.83) & (\(\pm\)0.6) \\ \cline{2-7}  & \begin{tabular}{c} Ethanol RED \\ (\(S. cerevisiae\)) \\ \end{tabular}  & 39.7 \({}^{\text{ab}}\) & 7.19 \({}^{\text{ab}}\) & 7.8 \({}^{\text{a}}\) & 63.32 \({}^{\text{bc}}\) & 98.9 \({}^{\text{a}}\) \\  & (\(\pm\)1.6) & (\(\pm\)0.41) & (\(\pm\)0.9) & (\(\pm\)0.54) & (\(\pm\)1.2) \\ \hline \multirow{7}{*}{Cacanska} & _S.