Antimicrobial Activity of TiO₂ Nanoparticle-Coated Film for Potential Food Packaging Applications

Table 1

The E. coli colony values (CFU/g) of the uncoated and coated films for various TiO₂ concentrations (0.05, 0.08, and 0.11 g/100 mL MEK) at designated interval times (1, 2, 3 days) exposed under fluorescent and UV light.

Light	Sample film	Day	Log CFU/g
Fluorescent	Uncoated	1	10.06±0.11
		2	10.18±0.18
		3	10.31±0.13
Fluorescent	Coated—0.05 g TiO2/100 mL MEK	1	9.08±0.15
		2	8.38±0.13
		3	8.67±0.20
Fluorescent	Coated—0.08 g TiO2/100 mL MEK	1	7.96±0.10
		2	7.72±0.11
		3	7.47±0.15
Fluorescent	Coated—0.11 g TiO2/100 mL MEK	1	7.44±0.14
		2	7.30±0.17
		3	7.07±0.09
UV	Uncoated	1	9.36±0.18
		2	9.94±0.12
		3	10.04±0.12
UV	Coated—0.05 g TiO2/100 mL MEK	1	7.16±0.11
		2	7.02±0.20
		3	6.86±0.16
UV	Coated—0.08 g TiO2/100 mL MEK	1	6.96±0.07
		2	6.94±0.22
		3	6.44±0.15
UV	Coated—0.11 g TiO2/100 mL MEK	1	6.82±0.10
		2	6.68±0.09
		3	6.29±0.17