[12a-PB2-1~7] 1.5 Instrumentation, measurement and Metrology

[12a-PB2-4] Evaluations of vitamin B2 concentration in milk based on photo-degradation of photoluminescence

〇Tooru Katsumata¹, Hiroaki Aizawa¹, Shuji Komuro¹, Shigeo Ito¹, Takeshi Matsumoto² (1.Toyo Univ., 2.Matsumoto Precision)

Keywords:Photoluminescence, Milk, Photodegradation

Vitamin B2 is a phosphor emitting green light and is an important nutrition in foods. Photo-degradation of vitamin B2 molecules by excitation with short wavelength light during photoluminescence measurement disturbs the acculated evaluation of vitamin B2 concentration. In this paper, evaluations of vitamin B2 concentration in milk is reported based on photo-degradation of photoluminescence.