[8p-P01-1~65] 1 Interdisciplinary Physics and Related Areas of Science and Technology (Poster)

[8p-P01-61] Photodegradation-free measurement of vitamin B2 in milk using a fiber-optic duty controlled pulse photoluminescence evaluation technique based on a PWM technique

Kenshin Kiso¹, 〇Tooru Katsumata¹, Tomoki Yoshida¹, Akio Sakakura¹, Hiroaki Aizawa¹, Takeshi Matsumoto² (1.Toyo Univ., 2.Matsumoto Precision)

Keywords:

vitamin B2,Duty ratio,Photodegradation

Photodegradation-free measurement of vitamin B2 in milk was developed using a fiber-optic duty controlled pulse photoluminescence evaluation technique. Temporal variation of the optical intensity from LED was stabirized based on a PWM technique. Photodegradation seen in the photoluminescence intensity from vitamin B2 was reduced using pulse LED light source with small duty ratio.