@article{oai:iwate-u.repo.nii.ac.jp:00009409,
 author = {小出, 章二 and 村田, 大地 and 折笠, 貴寛 and 武田, 純一},
 journal = {農業食料工学会東北支部報},
 month = {Dec},
 note = {We used an apatite-coated titanium dioxide photocatalyst (TiO2-Ap), and examined its disinfecting efficacy of Escherichia coli and Batillus subtilis under UVA irradiation. Changes in the microbial populations of the E. coli and B. subtilis in the 15.0 % w/v TiO2-Ap solution were assayed at 25°C (UVA intensity of 0.8 mW cm-2). Microbial populations of the E. coli and B. subtilis with 15.0 % w/v TiO2-Ap solution or with 0.0 % w/v TiO2-Ap solution combined with or without UVA irradiation were carried out. Remarkable disinfection was indicated under the condition of 15.0% w/v TiO2-AP solution with UVA irradiation, however no significant disinfectant was found in the other conditions. Results indicated that the rates of disinfection of E. coli and B. subtilis were defined as the slope of a semi-logarithmic plot of the microorganism concentrations against irradiation time, and the D-value (decimal reduction time) of E. coli and B. subtilis were determined as 23.5 and 8.4 min, respectively. The effects of radical scavenging agents of glutathione on the disinfection were examined and it was considered that OH radicals appear to play a significant role in the mechanism of disinfection. Furthermore, we trapped the airborne microorganisms into the glass bottles containing 15.0 % w/v TiO2-AP solution at a postharvest facility, and disinfection of bacteria, and moulds and yeasts, were examined under UVA irradiation. Results showed that most of the microbial populations in the TiO2-Ap solution reduced to uncountable levels. Recently, new global standards such as Good Agricultural Practices (GAP) have been introduced for agricultural facilities and there are strong demands for improvements in food safety, occupational safety and environmental conservation in the facilities. Thus, our data provide basic information regarding reduction of bacteria, and it can be considered that TiO2-Ap would be beneficial disinfection method in postharvest facilities.},
 pages = {43--46},
 title = {ポストハーベストへの応用を目指したアパタイト被覆二酸化チタン光触媒の殺菌特性の評価},
 volume = {60},
 year = {2013}
}