## 3 Results
### Antimicrobial Properties of BWBs
#### 3.2.2 Effect of Fermented BWBs on Bacterial Growth Inhibition  
The antimicrobial activity of BWBs was considered an added value of prepared products and was examined against both gram-positive and gram-negative bacteria (Figures 2-4). Since the exact MIC value was not determined for many samples, indicating that it was higher than the highest concentration of the beverage used, antibacterial activity is presented as the degree of inhibition of the growth of indicator microorganisms by the tested concentrations. This also enables the observation of activity changes during the fermentation process. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Variant**} & **Incubation** & \multicolumn{4}{c}{**BWBs inoculated with _L. plantarum_} \\ \cline{3-6}  & **Time** & _E. coli_ & _P. fluorescens_ & _S. saprophyticus_ & _M. luteus_ \\ \hline \multirow{6}{*}{BWBs without flaxseed} & 6 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 25 \\ \cline{2-6}  & 8 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 25 \\ \cline{2-6}  & 12 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 12.5 \\ \cline{2-6}  & 24 h & \textgreater{}50 & \textgreater{}50 & 50 & 6.25 \\ \cline{2-6}  & 48 h & 50 & 50 & 50 & 6.25 \\ \hline \multirow{6}{*}{BWBs with flaxseed} & 6 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 25 \\ \cline{2-6}  & 8 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 12.5 \\ \cline{2-6}  & 12 h & 50 & 50 & 50 & 6.25 \\ \cline{2-6}  & 24 h & 50 & 50 & 50 & 6.25 \\ \cline{2-6}  & 48 h & 25 & 25 & 25 & 6.25 \\ \hline \hline \end{tabular} \
\begin{tabular}{c c c c c} \hline \hline \multirow{6}{*}{BWBs without flaxseed} & 6 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 8 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 12 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 24 h & \textgreater{}50 & 50 & 50 & 6.25 \\ \cline{2-6}  & 48 h & 50 & 50 & 50 & 6.25 \\ \hline \multirow{6}{*}{BWBs with flaxseed} & 6 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 8 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 12 h & \textgreater{}50 & 50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 24 h & 50 & 25 & 50 & 6.25 \\ \cline{2-6}  & 48 h & 25 & 12,5 & 25 & 6.25 \\ \hline \hline \end{tabular}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{BWBs without flaxseed} & 6 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 8 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 12 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 25 \\ \cline{2-6}  & 24 h & \textgreater{}50 & 50 & \textgreater{}50 & 6.25 \\ \hline \multirow{6}{*}{BWBs without flaxseed} & 48 h & 25 & 25 & 50 & 6.25 \\ \cline{2-6}  & 6 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 8 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 12 h & \textgreater{}50 & \textgreater{}50 & \textgreater{}50 & 50 \\ \cline{2-6}  & 24 h & 50 & 50 & \textgreater{}50 & 6.25 \\ \cline{2-6}  & 48 h & 25 & 25 & 50 & 6.25 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Minimal inhibitory concentration (%) of fermented BWBs towards indicator microorganisms. Figure 2: Antimicrobial activity of BWBs inoculated with _L. plantarum_ against indicator microorganisms. (**A**–**D**)—BWBs without flaxseed; (**E**–**H**)—BWBs with flaxseed. Figure 3: Antimicrobial activity of BWBs inoculated with _L. paracasei_ against indicator microorganisms. (**A**–**D**)—BWBs without flaxseed; (**E**–**H**)—BWBs with flaxseed. Figure 4: Antimicrobial activity of BWBs inoculated with a mixture of LAB strains against indicator microorganisms. (**A**–**D**)—BWBs without flaxseed; (**E**–**H**)—BWBs with flaxseed. The strongest antibacterial effect of fermented BWBs inoculated with _L.