[20p-PA7-1~8] 13.4 Si processing /Si based thin film / MEMS / Equipment technology

[20p-PA7-4] Dependence of Fluorescence Intensity of Legionella on Excitation Light Intensity Ⅱ

〇Sawako Tanaka¹, Yong Joon Choi¹, Makoto Ishida¹, Kazuaki Sawada¹, Hiromu Ishii¹, Katsuyuki Machida², Yasuhiko Nikaido³, Mitsumasa Saito³, Shinichi Yoshida⁴ (1.Toyohashi Univ. of Technology, 2.Tokyo Institute of Technology, 3.Univ. of Occupational and Environmental Health, 4.Fukuoka Megumi Hospital)

Keywords:light detection sensor, Legionella, fluorescence

This work describes the way of discrimination for bacteria, Legionella by photogate-type fluorescence sensor. Photoirradiation time dependences of fluorescent intensity for L. erythra was obtained by the optical sensor with the UV-photointensity as a parameter. The appropriate excitation photointensty was found to be necessary for observing the fluorescent intensity variation because the rate of photochemical reaction in Legionella cells varies depending on the excitation photointensty.