## 3 Results
### Recovery Ratio of Bacteria from Contaminated Samples
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Experimental Variant** & **Strain** & **Coefficient of Absolute** & **Mean Value of Coefficient of** \\  & **RCI Efficiency (E)** & **Absolute RCI Efficiency (E)** \\ \hline \multirow{8}{*}{I} & CJE ATCC & 0.720 (\(\pm\) _0.081_)\({}^{\mathrm{a}}\) & \\  & CJE 1 & 0.725 (\(\pm\) _0.125_)\({}^{\mathrm{a}}\) & 0.723 (\(\pm\)0.323)\({}^{\mathrm{a}}\) \\  & CJE 2 & 0.723 (\(\pm\) 1.188)\({}^{\mathrm{a}}\) & \\  & LMO ATCC & 0.647 (\(\pm\) _0.089_)\({}^{\mathrm{a}}\) & \\  & LMO 1 & 0.622 (\(\pm\) 0.155)\({}^{\mathrm{a}}\) & 0.629 (\(\pm\) _0.181_)\({}^{\mathrm{a}}\) \\  & LMO 2 & 0.620 (\(\pm\) 0.217)\({}^{\mathrm{a}}\) & \\  & SENT ATCC & 0.612 (\(\pm\) 0.121)\({}^{\mathrm{a}}\) & \\  & SENT 1 & 0.605 (\(\pm\) 0.061)\({}^{\mathrm{a}}\) & 0.600 (\(\pm\) _0.076_)\({}^{\mathrm{a}}\) \\  & SENT 2 & 0.584 (\(\pm\) 0.110)\({}^{\mathrm{a,b}}\) & \\ \hline \multirow{8}{*}{II} & CJE ATCC & 0.375 (\(\pm\) _0.041_)\({}^{\mathrm{c}}\) & \\  & CJE 1 & 0.173 (\(\pm\) _0.014_)\({}^{\mathrm{d}}\) & 0.232 (\(\pm\) _0.011_)\({}^{\mathrm{b}}\) \\  & CJE 2 & 0.150 (\(\pm\) _0.030_)\({}^{\mathrm{d}}\) & \\  & LMO ATCC & 0.266 (\(\pm\) _0.040_)\({}^{\mathrm{c},\mathrm{d}}\) & \\  & LMO 1 & 0.306 (\(\pm\) _0.084_)\({}^{\mathrm{c}}\) & 0.329 (\(\pm\) _0.061_)\({}^{\mathrm{b}}\) \\  & LMO 2 & 0.409 (\(\pm\) _0.110_)\({}^{\mathrm{b,c}}\) & \\  & SENT ATCC & 0.250 (\(\pm\) _0.051_)\({}^{\mathrm{c},\mathrm{d}}\) & \\  & SENT 1 & 0.231 (\(\pm\) _0.022_)\({}^{\mathrm{c},\mathrm{d}}\) & 0.261 (\(\pm\) _0.024_)\({}^{\mathrm{b}}\) \\  & SENT 2 & 0.302 (\(\pm\) _0.058_)\({}^{\mathrm{c}}\) & \\ \hline \multirow{8}{*}{III} & CJE ATCC & 0.155 (\(\pm\) _0.017_)\({}^{\mathrm{d}}\) & \\  & CJE 1 & 0.162 (\(\pm\) _0.008_)\({}^{\mathrm{d}}\) & 0.162 (\(\pm\) _0.005_)\({}^{\mathrm{c}}\) \\  & CJE 2 & 0.171 (\(\pm\) _0.039_)\({}^{\mathrm{d}}\) & \\  & LMO ATCC & 0.119 (\(\pm\) _0.016_)\({}^{\mathrm{d,e}}\) & \\  & LMO 1 & 0.049 (\(\pm\) _0.009_)\({}^{\mathrm{e}}\) & 0.087 (\(\pm\) _0.022_)\({}^{\mathrm{c}}\) \\  & LMO 2 & 0.092 (\(\pm\) _0.014_)\({}^{\mathrm{e}}\) & \\  & SENT ATCC & 0.083 (\(\pm\) _0.038_)\({}^{\mathrm{e}}\) & 0.088 (\(\pm\) _0.028_)\({}^{\mathrm{c}}\) \\  & SENT 1 & 0.102 (\(\pm\) _0.015_)\({}^{\mathrm{d,e}}\) & \\  & SENT 2 & 0.079 (\(\pm\) _0.025_)\({}^{\mathrm{e}}\) & \\ \hline \multicolumn{4}{l}{\({}^{\mathrm{a}}\)—standard deviation; \({}^{\mathrm{a,b,c}}\)—values marked with different letters differ statistically significantly.} \\ \end{tabular}
\end{table} 
Table 1: The E coefficient ratio values. As presented in Figure 4, no significant difference between the initial bacteria number on the glass and the bacteria number isolated from the non-treated with RCI surface was observed. For _C. jejuni_, the bacteria number ranged from 4.358 log CFU \(\times\) cm\({}^{-2}\) (_C. jejuni_ strain 1) to 5.352 (_C. jejuni_ strain ATCC). For _L. monocytogenes_, the values ranged from 6.241 log CFU \(\times\) cm\({}^{-2}\) (_L. monocytogenes_ strain 1) to 6.011 log CFU \(\times\) cm\({}^{-2}\) (_L. monocytogenes_ strain 2). For _S._ Enteritidis, the number of bacteria reisolated from the glass surface not treated with RCI ranged from 5.120 log CFU \(\times\) cm\({}^{-2}\) (_S. Enteritidis_ ATCC strain) to 5.225 log CFU \(\times\) cm\({}^{-2}\) (_S. Enteritidis_ strain 2). The average number of bacteria reisolated from the biofilm of _C. jejuni_, _L. monocytogenes_, and _S._ Enteritidis was 4.691 log CFU \(\times\) cm\({}^{-2}\), 6.164 log CFU \(\times\) cm\({}^{-2}\), and 3.786 log CFU \(\times\) cm\({}^{-2}\), respectively. Significant differences between _C. jejuni_, _L. monocytogenes_, and _S._ Enteritidis were noted (Figure 4). The 24 h application of radiant catalytic ionization caused a statistically significant decrease of the bacteria number, as compared with the non-RCI-treated surface. The average bacteria number after 24 h RCI application was 3.724, 4.145, and 2.761, for _C. jejuni_, _L. monocytogenes_, and _S._ Enteritidis, respectively. The count of _C.