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- Papa, Thiago B. R., et al. Show all 6 Authors
- Journal of agricultural and food chemistry 2013 v.61 no.31 pp. 7615-7620
- biotin; fluorescence; niacin; photooxidation; pyridoxal phosphate; riboflavin
- ... Pyridoxal phosphate (PLP) was found to deactivate triplet-excited riboflavin (Rib) in aqueous solution with a deactivation constant of 3.0 ± 0.1 × 10⁸ L mol–¹ s–¹ at 25 °C. Likewise, PLP was found to quench the fluorescence emission of ¹Rib* with ¹kq = 1.0 ± 0.1 × 10¹¹ L mol–¹ s–¹ as determined by steady state fluorescence. The rather high quenching constant suggests the formation of a ground stat ...