ID 111322
著者
Gadelmoula, Mostafa The University of Tokushima
Lian, Xin The University of Tokushima|Japan Science and Technology Agency
Maeda, Miku The University of Tokushima
Aihara, Mutsumi The University of Tokushima|Japan Science and Technology Agency 徳島大学 教育研究者総覧 KAKEN研究者をさがす
Hamamoto, Akiko The University of Tokushima
Harada, Yumi The University of Tokushima
大和, 正幸 The University of Tokushima
キーワード
airborne pathogens
air disinfection
ultraviolet germicidal irradiation (UVGI)
ultraviolet light emitting diodes (UV-LED)
資料タイプ
学術雑誌論文
抄録
We previously developed a high powered light-emitting diode device capable of discharging germicidal ultraviolet irradiation (UVA-LED) at an approximate wavelength of 365 nm. This study examined the bactericidal activity of UVA-LED in moving air streams. Aerosols of Escherichia coli DH5α were exposed to UVA-LED irradiation using a stable current (0.5 A and 1.2 mW/cm2) or pulse current (1.0 A and 0.2 mW/cm2). Settle plate analysis was used for bioaerosol sampling, where results were expressed as Colony Forming Units. A-3 Log inactivation of the E. coli population occurred after 75 minutes of constant exposure to stable current. The pulse current produced inactivation within a similar timeframe. Our results might be significant as a basic study for further investigations about the effect of UVA-LED on airborne bacteria and its suitability for air disinfection applications.
掲載誌名
The Journal of Medical Investigation
ISSN
13496867
13431420
cat書誌ID
AA11166929
AA12022913
出版者
Faculty of Medicine Tokushima University
56
3-4
開始ページ
150
終了ページ
156
並び順
150
発行日
2009-08
EDB ID
195209
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
出版社版
部局
生物資源系
医学系
理工学系