منابع مشابه
Intermediates in the neutral photolysis of riboflavin.
MASSEY 1 a n d HOLMSTRÖM 2 h a v e r e p o r t e d that a species with an absorption maximum around 410 nm is formed on illumination of riboflavin and FMN. A similar compound has been isolated as a second chromophore present in preparations of the flavoprotein, glycolic acid oxidase 3. To facilitate identification of this new chromophore we have studied flavin derivatives with monofunctional N(...
متن کاملEffect of caffeine complexation on the photolysis of riboflavin in aqueous solution: a kinetic study.
The effect of caffeine complexation with riboflavin on the kinetics of riboflavin photolysis in the pH range 2.0-10.5 has been studied. The photolysis of riboflavin solutions (5x10(-5) M) was carried out in the presence of caffeine (0.5-2.5x10(-4) M) using a visible radiation source. A specific multicomponent spectrophotometric method was used for the determination of riboflavin and photoproduc...
متن کاملEffect of Riboflavin on the Photolysis of Cyanocobolamin in Aqueous Solution
The kinetics of photolysis of cyanocobalamin (CC) by visible radiation in the presence of riboflavin (RF) at pH 2.0-12.0 has been studied. A specific two-component spectrophotometric method has been used for the simultaneous assay of CC and its photoproduct, hydroxocobalamin (HC), at 525 and 550 nm, without any interference from RF. The apparent first-order rate constants for the photolysis of ...
متن کاملEffect of Nicotinamide on the Photolysis of Riboflavin in Aqueous Solution
The photolysis of riboflavin (RF) in aqueous solution in the presence of nicotinamide (NA) by visible light has been studied in the pH range 1.0-12.0 and the various photoproducts have been identified as known compounds. RF has been determined in degraded solutions by a specific multicomponent spectrometric method in the presence of its photoproducts and NA. The second-order rate constants (k 2...
متن کاملRemoval of thiamin and riboflavin from milk for dietary use.
Porpoise Sounds as Sonar Signals: W. N. Kellogg, Robert Kohler, and H. N. Morris 239_it News and Notes 243 Technical Papers A Computational Procedure for the Isotope Method of Brain Tumor Localization: Alexander Langer and Rqbert Loevinger __ 247 The Solubilization of 4-Dimethylaminoazobenzene (Butter Yellow) in Serum: Charles Wunderly ._ 248 Differential Migration of Rubber by Reversed-Phase P...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1945
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(45)95173-3