The vitamin B2 complex

Some recently characterized members of the vitamin B2 complex.

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Choline as a Member of the Vitamin B2 Complex

The experimental rations commonly used in studies on the vitamin B(2) complex are, as a rule, low in content of choline. Addition of vitamin B(6) has an aggravating influence on the specific effect of deficiency of choline, especially with regard to the development of cortical necrosis of the kidneys. The acute and subacute lesions associated with this specific type of renal injury are describe...

Smart Spectrophotometric Methods for the Simultaneous Determination of Vitamin B1and B2 Concentrations in Complex Mixtures

Simple, selective and reproducible spectrophotometric methods have been developed for the determination of thiamin and riboflavin concentrations in bulk and their pharmaceutical dosage forms using pure formulations and pharmaceutical formulations of chromazurol S (CAS). This method is based on the ion-association between the drugs and the acid dye (CAS) in weak base media in the presence of Tri...

Parenchymatous Keratitis Following Riboflavin (Vitamin B2) Deficiency

Riboflavin or vitamin B2 (no. 1), a definite member of the 1 vitamin B complexis a pigment of the flavin type and has the empirical formula C17H20N4O?. It has also been called vitamin G, lactoflavin and ovaflavin. The other vitamin B2 (no. 2)?the P-P factor, nicotinic acid?has the formula C0H4N COOH, and its amide, C6H4N CONH?. Riboflavin has been isolated in pure form from liver, yeast and mil...

Lv. the Distribution of Vitamin B2 in Certain Foods