# Cotton Terry Textiles with Photo- and Bio-Activity in a Model Study and Real Conditions
## 3 Results
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Textiles**} & \multirow{2}{*}{
\begin{tabular}{c} **K/S Values (540 nm)** \\ \end{tabular} } & \multirow{2}{*}{\(\Delta\)E*} & \multirow{2}{*}{\(\Delta\)E*} & \multirow{2}{*}{\(\Delta\)E*} & \multirow{2}{*}{\(\Delta\)E*} & \multirow{2}{*}{\(\Delta\)E*} & \multirow{2}{*}{\(\Delta\)E*} & \multirow{2}{*}{\(\Delta\)E*} \\ \cline{2-2} \cline{6-9}  & & & & & & & & & \\ \hline control & 0.50 & 0.37 & 6.145 & 73.38 & 75.44 & 15.23 & 10.35 & \(-\)2.22 & 0.88 \\ modified & 0.42 & 0.17 & 12.905 & 73.57 & 80.70 & 9.56 & 2.52 & \(-\)1.86 & 6.28 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Self-cleaning properties. Figure 6: Antimicrobial activity of textiles—study in model conditions. N—survival index; Ba—biostatic activity; 1 sample incubated without lighting, 2 sample incubated with natural lighting. Study in real conditions showed a much higher effect of photocatalytic activity against microorganisms than the model study. The microclimatic and lighting conditions in Bathroom No. 1 with artificial lighting and Bathroom No. 2 with natural lighting were different (Table 4): Bathroom No. 1, average RH = 65.6-66.8%, temp. 21 \({}^{\circ}\)C, light intensity 152.8-166.7 lux, lighting time 80.7-87.8 min/day; Bathroom No. 2, average RH = 36-44.5%, temp. 23 \({}^{\circ}\)C, light intensity 92.3-95.0 lux, lighting time 420 min/day. Microclimatic and lighting conditions in the bathrooms during the experiments with control and modified towels were the same (Table 4). The microbial contamination of control towels used under real conditions in the bathrooms described was higher compared to the photocatalytically modified towels (Figure 7). \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Day**} & \multicolumn{4}{c}{**Bathroom with Artificial Lighting No. 1**} & \multicolumn{4}{c}{**Bathroom with Natural Lighting No. 2**} \\ \cline{2-10}  & **RH (\%)** & **Temp** & **Light Intensity** & **Lighting Time** & **RH** (\%)** & **Temp** & **Light Intensity** & **Lighting Time** (min/24 h)** \\ \hline \hline \multicolumn{10}{c}{**Control Towels**} \\ \hline
1 & 58.8 & 22.0 & 173.0 & 55 & 46.0 & 22.3 & 61.9 & 420 \\
2 & 67.2 & 21.1 & 165.6 & 70 & 43.4 & 23.7 & 62.5 & 420 \\
3 & 62.1 & 21.2 & 156.3 & 100 & 40.6 & 23.8 & 73.5 & 420 \\
4 & 63.8 & 20.8 & 160.3 & 105 & 44.7 & 23.7 & 70.1 & 420 \\
5 & 62.7 & 20.3 & 171.3 & 110 & 50.4 & 20.3 & 119.3 & 420 \\
6 & 68.7 & 22.5 & 169.7 & 100 & 42.3 & 23.7 & 69.2 & 420 \\
7 & 78.7 & 21.9 & 171.0 & 75 & 43.8 & 23.7 & 208.3 & 420 \\ M: & 65.6 & 21.4 & 166.7 & 87.86 & 44.5 & 23.0 & 95.0 & 420 \\ \hline \hline \multicolumn{10}{c}{**Modified Towels**} \\ \hline
1 & 66.5 & 21.8 & 156.6 & 50 & 39.6 & 24.1 & 64.4 & 420 \\
2 & 68.5 & 21.3 & 165.0 & 90 & 39.8 & 23.6 & 96.6 & 420 \\
3 & 65.0 & 21.4 & 163.0 & 75 & 39.6 & 24.1 & 90.9 & 420 \\
4 & 64.6 & 20.6 & 152.0 & 100 & 32.5 & 23.9 & 88.0 & 420 \\
5 & 64.4 & 21.4 & 145.0 & 75 & 32.0 & 23.5 & 103.4 & 420 \\
6 & 65.1 & 20.7 & 143.0 & 85 & 34.8 & 23.1 & 99.6 & 420 \\
7 & 73.8 & 23.4 & 145.0 & 90 & 33.7 & 23.4 & 103.0 & 420 \\ M: & 66.8 & 21.5 & 152.8 & 80.7 & 36.0 & 23.7 & 92.3 & 420 \\ \hline \hline \end{tabular}  
M—mean; min—minutes, temp—temperature.  
\end{table} 
Table 4: Characteristics of microclimatic and lighting conditions in bathrooms during seven days of towel use—real conditions. Figure 7: Microbial contamination of control and modified towels after seven days use—real conditions. The numbers on the figure are calculated biostatic activity. Moreover, a significantly higher antimicrobial effect of modified towels was found under real conditions than in model conditions. The number of microorganisms on control towels after seven days of use was: total number of bacteria (7.0 \(\times\) 10\({}^{6}\)-2.6 \(\times\) 10\({}^{7}\) CFU/cm\({}^{2}\)), total number of fungi (4.5 \(\times\) 10\({}^{3}\)-8.0 \(\times\) 10\({}^{4}\) CFU/cm\({}^{2}\)).