## 4 Conclusions
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Parameter**} & \multirow{2}{*}{**Unit**} & \multicolumn{6}{c}{**Variant**} \\ \cline{3-8}  & & **1: MA100 +** & **2: MA80 +** & **3: MA60 +** & **4: MA40 +** & **5: MA20 +** & **6: MA0 +** \\  & & **MS0** & **MS20** & **MS40** & **MS60** & **MS80** & **MS100** \\ \hline TS & \% & 4.7 \(\pm\) 1.3 & 4.1 \(\pm\) 1.4 & 4.0 \(\pm\) 1.0 & 5.0 \(\pm\) 0.9 & 4.3 \(\pm\) 0.8 & 3.9 \(\pm\) 0.9 \\ VS & \% TS & 70.9 \(\pm\) 2.5 & 67.5 \(\pm\) 3.6 & 66.1 \(\pm\) 2.8 & 69.4 \(\pm\) 1.3 & 66.9 \(\pm\) 1.9 & 63.8 \(\pm\) 3.2 \\ TN & mg/gTS & 45.3 \(\pm\) 3.1 & 40.0 \(\pm\) 1.2 & 29.9 \(\pm\) 3.6 & 21.5 \(\pm\) 1.7 & 18.1 \(\pm\) 3.1 & 13.1 \(\pm\) 2.0 \\ TP & mg/gTS & 4.0 \(\pm\) 1.0 & 3.6 \(\pm\) 0.7 & 3.1 \(\pm\) 1.1 & 2.8 \(\pm\) 0.2 & 2.0 \(\pm\) 0.8 & 2.3 \(\pm\) 1.4 \\ TK & mg/gTS & 9.1 \(\pm\) 2.4 & 8.7 \(\pm\) 1.2 & 8.3 \(\pm\) 1.9 & 7.9 \(\pm\) 0.7 & 7.3 \(\pm\) 1.6 & 7.5 \(\pm\) 1.2 \\ TC & mg/gTS & 384 \(\pm\) 29 & 378 \(\pm\) 35 & 336 \(\pm\) 18 & 381 \(\pm\) 18 & 372 \(\pm\) 30 & 328 \(\pm\) 42 \\ TOC & mg/gTS & 316 \(\pm\) 30 & 315 \(\pm\) 30 & 300 \(\pm\) 22 & 333 \(\pm\) 22 & 330 \(\pm\) 31 & 315 \(\pm\) 30 \\ C:N ratio & - & 6.9 \(\pm\) 0.2 & 7.8 \(\pm\) 0.5 & 10.3 \(\pm\) 0.1 & 15.4 \(\pm\) 0.1 & 18.2 \(\pm\) 0.1 & 24.0 \(\pm\) 0.6 \\ pH & - & 6.7 \(\pm\) 0.2 & 6.9 \(\pm\) 0.4 & 7.3 \(\pm\) 0.1 & 6.8 \(\pm\) 0.4 & 7.0 \(\pm\) 0.3 & 7.5 \(\pm\) 0.2 \\ Protein & \% TS & 28.3 \(\pm\) 1.9 & 25.0 \(\pm\) 0.8 & 18.1 \(\pm\) 2.2 & 13.1 \(\pm\) 1.1 & 11.2 \(\pm\) 2.0 & 8.1 \(\pm\) 1.3 \\ Lipids & \% TS & 6.1 \(\pm\) 0.8 & 4.2 \(\pm\) 1.1 & 2.7 \(\pm\) 0.8 & 3.0 \(\pm\) 0.3 & 3.7 \(\pm\) 0.7 & 3.0 \(\pm\) 0.5 \\ Sugars & \% TS & 1.8 \(\pm\) 0.5 & 2.0 \(\pm\) 0.8 & 1.8 \(\pm\) 0.4 & 2.0 \(\pm\) 0.3 & 1.3 \(\pm\) 0.1 & 2.5 \(\pm\) 0.5 \\ \(\ln_{\rm g}\)MSS & \% & 60.43 \(\pm\) 1.68 & 68.92 \(\pm\) 1.55 & 70.35 \(\pm\) 2.31 & 70.27 \(\pm\) 1.82 & 67.38 \(\pm\) 1.52 & 71.84 \(\pm\) 2.12 \\ \(\ln\)VS & \% & 58.25 \(\pm\) 1.22 & 64.98 \(\pm\) 2.01 & 66.58 \(\pm\) 1.89 & 65.24 \(\pm\) 1.95 & 62.60 \(\pm\) 2.23 & 67.11 \(\pm\) 1.45 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Digestate parameters across the experimental variants. **Author Contributions:** Conceptualization, M.D., J.K. and M.Z. ; methodology, M.D. and J.K.; validation, M.Z. and I.B. ; formal analysis, M.Z. and I.B. ; investigation, M.D., J.K. and M.Z. ; resources, M.D., J.K., M.Z. and I.B. ; data curation, M.Z. and I.B. ; writing--original draft preparation, M.D. and J.K.; writing--review and editing, M.D., J.K., M.Z. and I.B. ; visualization, M.D and J.K.; supervision, M.Z. and I.B. ; project administration, M.Z. and I.B. ; funding acquisition, J.K. All authors have read and agreed to the published version of the manuscript. **Funding:** The manuscript was supported by a project financially supported by the Minister of Education and Science within the program entitled \"Regional Initiative of Excellence\" for the years 2019-2022 (project No. 010/RID/2018/19, amount of funding: 12,000,000 PLN), and the project WZ/WB-IIS/3/2022, funded by the Minister of Education and Science. **Institutional Review Board Statement:** Not applicable. **Informed Consent Statement:** Not applicable. **Data Availability Statement:** Not applicable. **Conflicts of Interest:** The authors declare no conflict of interest.