## 3 Results
coefficients of determination (R\({}^{2}\)), standard errors of fit (SE) and maximum rate are presented in Table 3.  
The maximum rate values for LM-2 and LM-5 bars at 2 and 4 \({}^{\circ}\)C are negative and positive for bars stored at 6 \({}^{\circ}\)C, corresponding to the course of the model lines. The highest maximum growth/survival rate was demonstrated for LM-2 bars at 6 \({}^{\circ}\)C, and the lowest for LM-5 bars at 2 \({}^{\circ}\)C, which was also the highest death rate of _L. monocytogenes_. As shown in Table 4, the average a\({}_{\rm w}\) value for the control bars (LM-0) was 0.947, reaching a minimum value (a\({}_{\rm w}\) value was 0.939) on day 3 of storage at 6 \({}^{\circ}\)C and a maximum value (a\({}_{\rm w}\) value was 0.953) on day 14 during storage at 2 \({}^{\circ}\)C. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**Storage** & **Sample** & **Batch** & **Day 0** & **Day 3** & **Day 7** & **Day 14** & **Day 21** & \(\Delta_{\rm series}\) & \(\Delta_{\rm food}\) \\ \hline \multirow{6}{*}{4 \({}^{\circ}\)C} & \multirow{3}{*}{LM-2} & 1 & 2.05 \(\pm\) 0.06 & 2.00 \(\pm\) 0.11 & 2.29 \(\pm\) 0.18 & 1.70 \(\pm\) 0.09 & 0.95 \(\pm\) 0.25 & 0.14 & \\  & & 2 & 2.12 \(\pm\) 0.04 & 1.80 \(\pm\) 0.13 & 2.10 \(\pm\) 0.13 & 1.30 \(\pm\) 0.220 & 1.34 \(\pm\) 0.11 & \(-\)0.02 & 0.14 \\  & & 3 & 2.10 \(\pm\) 0.12 & 1.67 \(\pm\) 0.17 & 1.95 \(\pm\) 0.09 & 1.44 \(\pm\) 0.19 & 1.26 \(\pm\) 0.15 & \(-\)0.15 & \\ \cline{2-10}  & \multirow{3}{*}{LM-5} & 1 & 5.06 \(\pm\) 0.11 & 4.73 \(\pm\) 0.23 & 4.95 \(\pm\) 0.08 & 4.30 \(\pm\) 0.24 & 3.69 \(\pm\) 0.26 & \(-\)0.11 & \\  & & 2 & 5.07 \(\pm\) 0.18 & 4.00 \(\pm\) 0.49 & 4.77 \(\pm\) 0.18 & 3.70 \(\pm\) 0.53 & 3.30 \(\pm\) 0.47 & \(-\)0.40 & \(-\)0.40 \\  & & 3 & 5.09 \(\pm\) 0.16 & 4.65 \(\pm\) 0.24 & 5.03 \(\pm\) 0.07 & 4.45 \(\pm\) 0.19 & 4.03 \(\pm\) 0.18 & \(-\)0.06 & \\ \hline \multirow{6}{*}{6 \({}^{\circ}\)C} & \multirow{3}{*}{LM-2} & 1 & 2.05 \(\pm\) 0.07 & 1.55 \(\pm\) 0.17 & 2.17 \(\pm\) 0.13 & 2.80 \(\pm\) 0.15 & 2.96 \(\pm\) 0.16 & 0.91 & \\  & & 2 & 2.12 \(\pm\) 0.05 & 1.78 \(\pm\) 0.11 & 2.67 \(\pm\) 0.31 & 2.60 \(\pm\) 0.16 & 2.72 \(\pm\) 0.10 & 0.60 & 0.91 \\  & & 3 & 2.10 \(\pm\) 0.13 & 1.82 \(\pm\) 0.08 & 2.39 \(\pm\) 0.16 & 2.34 \(\pm\) 0.26 & 2.68 \(\pm\) 0.10 & 0.58 & \\ \cline{2-10}  & \multirow{3}{*}{LM-5} & 1 & 5.06 \(\pm\) 0.12 & 5.04 \(\pm\) 0.08 & 5.38 \(\pm\) 0.26 & 5.37 \(\pm\) 0.04 & 5.49 \(\pm\) 0.13 & 0.43 & \\ \cline{1-1}  & & 2 & 5.07 \(\pm\) 0.19 & 4.86 \(\pm\) 0.09 & 4.98 \(\pm\) 0.12 & 5.44 \(\pm\) 0.06 & 5.71 \(\pm\) 0.07 & 0.64 & 0.64 \\ \cline{1-1}  & & 3 & 5.09 \(\pm\) 0.17 & 4.81 \(\pm\) 0.12 & 5.43 \(\pm\) 0.25 & 5.57 \(\pm\) 0.14 & 5.64 \(\pm\) 0.08 & 0.55 & \\ \hline \end{tabular}
\end{table} 
Table 2: _Cont._  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Temperature** & **Sample Code** & **R\({}^{2}\)** & **SE** & **Maximum Rate (1/h)** \\ \hline
2 \({}^{\circ}\)C & LM-2 & 0.717 & 0.375 & \(-\)0.0955 \(\pm\) 0.0673 \\  & LM-5 & 0.772 & 0.641 & \(-\)0.1270 \(\pm\) 0.0723 \\  & LM-2 & 0.818 & 0.198 & \(-\)0.0655 \(\pm\) 0.0326 \\
4 \({}^{\circ}\)C & LM-5 & 0.805 & 0.339 & \(-\)0.0891 \(\pm\) 0.0551 \\
6 \({}^{\circ}\)C & LM-2 & 0.751 The average pH value for the LM-0 bars was 6.06, with a minimum of 6.02 on day 14 of storage at 6 \({}^{\circ}\)C and a maximum of 6.09 (on days 3 and 7) at 6 \({}^{\circ}\)C. The initial APC level was 5.36 log CFU/g, and the LAB level was 0.97 log CFU/g. The maximum APC and LAB levels were obtained on day 14 at 6 \({}^{\circ}\)C, while the minimum APC and LAB counts differed, found on day 21 at 2 \({}^{\circ}\)C and day 3 at 4 \({}^{\circ}\)C, respectively.